BlueGreycalmElegant

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• This comparison shows the changes necessary to convert path

  → /contrib @ 4866

  → /contrib @ 4826

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• Compare Path:	Rev

  With Path:	Rev

Regard whitespace Rev 4866 → Rev 4826

/contrib/sdk/sources/Intel-2D/Makefile
1,14 → 1,15
CC=gcc
LD = ld
AR= ar
LIBRARY= pixlib
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
STRIP = $(PREFIX)strip
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0
PXFLAGS:= --version-script pixlib.ver --out-implib $(LIBRARY).dll.a
PXFLAGS:= --version-script pixlib.ver --output-def $(LIBRARY).orig.def --out-implib $(LIBRARY).dll.a
SNAFLAGS:= --version-script sna.ver --output-def sna.def
UXAFLAGS:= --version-script uxa.ver --output-def uxa.def
20,6 → 21,7
DEFINES:= -DHAS_DEBUG_FULL=0 -DSHOW_BATCH=0 -DDEBUG_DUMP=0
SRC_PIXLIB = pixlib.c
SRC_SNA = \
64,7 → 66,6
OBJECTS= $(OBJ_SNA)
DEFINES+= -DBUILD_SNA
LIBS+= -lgcc
LIBPATH+= -L/home/autobuild/tools/win32/mingw32/lib
endif
endif
77,11 → 78,13
$(LIBRARY).dll: $(OBJ_PIXLIB) Makefile
$(LD) $(LDFLAGS) $(PXFLAGS) $(LIBPATH) -o $@ $(OBJ_PIXLIB) $(LIBS)
$(STRIP) $@
mv -f $@ ../../bin
mv -f $(LIBRARY).dll.a ../../lib
intel-sna.drv: $(OBJ_SNA) Makefile
$(LD) $(LDFLAGS) $(SNAFLAGS) $(LIBPATH) -o $@ $(OBJ_SNA) $(LIBS)
$(STRIP) $@
mv -f $@ ../../bin
intel-uxa.drv: $(OBJ_UXA) Makefile

/contrib/sdk/sources/Intel-2D/sna/sna.c
37,7 → 37,7
#include "config.h"
#endif
//#include <memory.h>
#include <memory.h>
#include <malloc.h>
#include "i915_pciids.h"

/contrib/sdk/sources/Intel-2D/sna/sna.h
46,7 → 46,7
#include "compiler.h"
//#include <memory.h>
#include <memory.h>
#include <malloc.h>
#include <errno.h>
#include <kos32sys.h>

/contrib/sdk/sources/cairo/Makefile
1,23 → 1,21
LIBRARY = cairo2
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CC = gcc
CFLAGS = -c -O2 -ffast-math -Wall -Winline -Wno-attributes -fomit-frame-pointer
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --version-script cairo.ver --output-def $(LIBRARY).orig.def
LDFLAGS+= --out-implib lib$(LIBRARY).dll.a
LD = ld
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --version-script cairo.ver --output-def $(LIBRARY).orig.def --out-implib lib$(LIBRARY).dll.a
ARFLAGS = crs
STRIP = $(PREFIX)strip
DEFINES = -U__WIN32__ -U_Win32 -U_WIN32 -U__MINGW32__ -U_MSC_VER -DHAVE_CONFIG_H=1 -DCAIRO_NO_MUTEX=1
INCLUDES = -I. -I../newlib/include -I../pixman -I../zlib -I../libpng -I../freetype/include
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L../../lib
LIBS:= -ldll -lgcc -lfreetype.dll -lz.dll -lpixman-1.dll -lpng16.dll -lc.dll
CAIRO_SOURCES = \
156,15 → 154,16
ebox: lib$(LIBRARY).a $(LIBRARY).dll
lib$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) $(ARFLAGS) lib$(LIBRARY).a $(OBJECTS)
ar cvrs lib$(LIBRARY).a $(OBJECTS)
mv -f lib$(LIBRARY).a ../../lib
$(LIBRARY).dll: $(OBJECTS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(OBJECTS) $(LIBS)
#sed -e "s/ @[^ ]*//" $(LIBRARY).orig.def > $(LIBRARY).def
#sed -f ../newlib/cmd1.sed $(LIBRARY).def > mem
#sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
$(STRIP) $@
sed -e "s/ @[^ ]*//" $(LIBRARY).orig.def > $(LIBRARY).def
sed -f ../newlib/cmd1.sed $(LIBRARY).def > mem
sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
mv -f $@ ../../bin
mv -f lib$(LIBRARY).dll.a ../../lib

/contrib/sdk/sources/cairo/cairo2.inc
0,0 → 1,1113
EXPORTS,'EXPORTS',\
DllStartup,'DllStartup',\
__cairo_clip_all,'__cairo_clip_all',\
__cairo_contour_add_point,'__cairo_contour_add_point',\
__cairo_contour_remove_last_chain,'__cairo_contour_remove_last_chain',\
__cairo_no_compositor,'__cairo_no_compositor',\
_cairo_analysis_surface_create,'_cairo_analysis_surface_create',\
_cairo_analysis_surface_get_bounding_box,'_cairo_analysis_surface_get_bounding_box',\
_cairo_analysis_surface_get_ctm,'_cairo_analysis_surface_get_ctm',\
_cairo_analysis_surface_get_supported,'_cairo_analysis_surface_get_supported',\
_cairo_analysis_surface_get_unsupported,'_cairo_analysis_surface_get_unsupported',\
_cairo_analysis_surface_has_supported,'_cairo_analysis_surface_has_supported',\
_cairo_analysis_surface_has_unsupported,'_cairo_analysis_surface_has_unsupported',\
_cairo_analysis_surface_merge_status,'_cairo_analysis_surface_merge_status',\
_cairo_analysis_surface_set_ctm,'_cairo_analysis_surface_set_ctm',\
_cairo_arc_path,'_cairo_arc_path',\
_cairo_arc_path_negative,'_cairo_arc_path_negative',\
_cairo_array_allocate,'_cairo_array_allocate',\
_cairo_array_append,'_cairo_array_append',\
_cairo_array_append_multiple,'_cairo_array_append_multiple',\
_cairo_array_copy_element,'_cairo_array_copy_element',\
_cairo_array_fini,'_cairo_array_fini',\
_cairo_array_grow_by,'_cairo_array_grow_by',\
_cairo_array_index,'_cairo_array_index',\
_cairo_array_index_const,'_cairo_array_index_const',\
_cairo_array_init,'_cairo_array_init',\
_cairo_array_num_elements,'_cairo_array_num_elements',\
_cairo_array_size,'_cairo_array_size',\
_cairo_array_truncate,'_cairo_array_truncate',\
_cairo_atomic_int_cmpxchg_return_old_impl,'_cairo_atomic_int_cmpxchg_return_old_impl',\
_cairo_atomic_int_dec_and_test,'_cairo_atomic_int_dec_and_test',\
_cairo_atomic_int_inc,'_cairo_atomic_int_inc',\
_cairo_atomic_mutex,'_cairo_atomic_mutex',\
_cairo_atomic_ptr_cmpxchg_return_old_impl,'_cairo_atomic_ptr_cmpxchg_return_old_impl',\
_cairo_base64_stream_create,'_cairo_base64_stream_create',\
_cairo_base85_stream_create,'_cairo_base85_stream_create',\
_cairo_bentley_ottmann_tessellate_boxes,'_cairo_bentley_ottmann_tessellate_boxes',\
_cairo_bentley_ottmann_tessellate_polygon,'_cairo_bentley_ottmann_tessellate_polygon',\
_cairo_bentley_ottmann_tessellate_rectangular_traps,'_cairo_bentley_ottmann_tessellate_rectangular_traps',\
_cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes,'_cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes',\
_cairo_bentley_ottmann_tessellate_rectilinear_traps,'_cairo_bentley_ottmann_tessellate_rectilinear_traps',\
_cairo_bentley_ottmann_tessellate_traps,'_cairo_bentley_ottmann_tessellate_traps',\
_cairo_botor_scan_converter_init,'_cairo_botor_scan_converter_init',\
_cairo_box_add_curve_to,'_cairo_box_add_curve_to',\
_cairo_box_from_doubles,'_cairo_box_from_doubles',\
_cairo_box_from_rectangle,'_cairo_box_from_rectangle',\
_cairo_box_intersects_line_segment,'_cairo_box_intersects_line_segment',\
_cairo_box_round_to_rectangle,'_cairo_box_round_to_rectangle',\
_cairo_box_to_doubles,'_cairo_box_to_doubles',\
_cairo_boxes_add,'_cairo_boxes_add',\
_cairo_boxes_clear,'_cairo_boxes_clear',\
_cairo_boxes_extents,'_cairo_boxes_extents',\
_cairo_boxes_fini,'_cairo_boxes_fini',\
_cairo_boxes_for_each_box,'_cairo_boxes_for_each_box',\
_cairo_boxes_get_extents,'_cairo_boxes_get_extents',\
_cairo_boxes_init,'_cairo_boxes_init',\
_cairo_boxes_init_for_array,'_cairo_boxes_init_for_array',\
_cairo_boxes_init_from_rectangle,'_cairo_boxes_init_from_rectangle',\
_cairo_boxes_init_with_clip,'_cairo_boxes_init_with_clip',\
_cairo_boxes_intersect,'_cairo_boxes_intersect',\
_cairo_boxes_limit,'_cairo_boxes_limit',\
_cairo_boxes_to_array,'_cairo_boxes_to_array',\
_cairo_cache_fini,'_cairo_cache_fini',\
_cairo_cache_foreach,'_cairo_cache_foreach',\
_cairo_cache_freeze,'_cairo_cache_freeze',\
_cairo_cache_init,'_cairo_cache_init',\
_cairo_cache_insert,'_cairo_cache_insert',\
_cairo_cache_lookup,'_cairo_cache_lookup',\
_cairo_cache_remove,'_cairo_cache_remove',\
_cairo_cache_thaw,'_cairo_cache_thaw',\
_cairo_cff_fallback_fini,'_cairo_cff_fallback_fini',\
_cairo_cff_fallback_init,'_cairo_cff_fallback_init',\
_cairo_cff_scaled_font_is_cid_cff,'_cairo_cff_scaled_font_is_cid_cff',\
_cairo_cff_subset_fini,'_cairo_cff_subset_fini',\
_cairo_cff_subset_init,'_cairo_cff_subset_init',\
_cairo_clip_combine_with_surface,'_cairo_clip_combine_with_surface',\
_cairo_clip_contains_box,'_cairo_clip_contains_box',\
_cairo_clip_contains_extents,'_cairo_clip_contains_extents',\
_cairo_clip_contains_rectangle,'_cairo_clip_contains_rectangle',\
_cairo_clip_copy,'_cairo_clip_copy',\
_cairo_clip_copy_path,'_cairo_clip_copy_path',\
_cairo_clip_copy_rectangle_list,'_cairo_clip_copy_rectangle_list',\
_cairo_clip_copy_region,'_cairo_clip_copy_region',\
_cairo_clip_copy_with_translation,'_cairo_clip_copy_with_translation',\
_cairo_clip_create,'_cairo_clip_create',\
_cairo_clip_destroy,'_cairo_clip_destroy',\
_cairo_clip_equal,'_cairo_clip_equal',\
_cairo_clip_from_boxes,'_cairo_clip_from_boxes',\
_cairo_clip_get_extents,'_cairo_clip_get_extents',\
_cairo_clip_get_image,'_cairo_clip_get_image',\
_cairo_clip_get_polygon,'_cairo_clip_get_polygon',\
_cairo_clip_get_region,'_cairo_clip_get_region',\
_cairo_clip_get_surface,'_cairo_clip_get_surface',\
_cairo_clip_intersect_box,'_cairo_clip_intersect_box',\
_cairo_clip_intersect_boxes,'_cairo_clip_intersect_boxes',\
_cairo_clip_intersect_clip,'_cairo_clip_intersect_clip',\
_cairo_clip_intersect_path,'_cairo_clip_intersect_path',\
_cairo_clip_intersect_rectangle,'_cairo_clip_intersect_rectangle',\
_cairo_clip_intersect_rectilinear_path,'_cairo_clip_intersect_rectilinear_path',\
_cairo_clip_is_polygon,'_cairo_clip_is_polygon',\
_cairo_clip_is_region,'_cairo_clip_is_region',\
_cairo_clip_path_destroy,'_cairo_clip_path_destroy',\
_cairo_clip_path_reference,'_cairo_clip_path_reference',\
_cairo_clip_reduce_for_composite,'_cairo_clip_reduce_for_composite',\
_cairo_clip_reduce_to_rectangle,'_cairo_clip_reduce_to_rectangle',\
_cairo_clip_reset_static_data,'_cairo_clip_reset_static_data',\
_cairo_clip_tor_scan_converter_create,'_cairo_clip_tor_scan_converter_create',\
_cairo_clip_transform,'_cairo_clip_transform',\
_cairo_clip_translate,'_cairo_clip_translate',\
_cairo_color_double_to_short,'_cairo_color_double_to_short',\
_cairo_color_equal,'_cairo_color_equal',\
_cairo_color_get_content,'_cairo_color_get_content',\
_cairo_color_get_rgba,'_cairo_color_get_rgba',\
_cairo_color_get_rgba_premultiplied,'_cairo_color_get_rgba_premultiplied',\
_cairo_color_init_rgba,'_cairo_color_init_rgba',\
_cairo_color_multiply_alpha,'_cairo_color_multiply_alpha',\
_cairo_color_stop_equal,'_cairo_color_stop_equal',\
_cairo_composite_rectangles_add_to_damage,'_cairo_composite_rectangles_add_to_damage',\
_cairo_composite_rectangles_can_reduce_clip,'_cairo_composite_rectangles_can_reduce_clip',\
_cairo_composite_rectangles_fini,'_cairo_composite_rectangles_fini',\
_cairo_composite_rectangles_init_for_boxes,'_cairo_composite_rectangles_init_for_boxes',\
_cairo_composite_rectangles_init_for_fill,'_cairo_composite_rectangles_init_for_fill',\
_cairo_composite_rectangles_init_for_glyphs,'_cairo_composite_rectangles_init_for_glyphs',\
_cairo_composite_rectangles_init_for_mask,'_cairo_composite_rectangles_init_for_mask',\
_cairo_composite_rectangles_init_for_paint,'_cairo_composite_rectangles_init_for_paint',\
_cairo_composite_rectangles_init_for_polygon,'_cairo_composite_rectangles_init_for_polygon',\
_cairo_composite_rectangles_init_for_stroke,'_cairo_composite_rectangles_init_for_stroke',\
_cairo_composite_rectangles_intersect_mask_extents,'_cairo_composite_rectangles_intersect_mask_extents',\
_cairo_composite_rectangles_intersect_source_extents,'_cairo_composite_rectangles_intersect_source_extents',\
_cairo_compositor_fill,'_cairo_compositor_fill',\
_cairo_compositor_glyphs,'_cairo_compositor_glyphs',\
_cairo_compositor_mask,'_cairo_compositor_mask',\
_cairo_compositor_paint,'_cairo_compositor_paint',\
_cairo_compositor_stroke,'_cairo_compositor_stroke',\
_cairo_content_from_format,'_cairo_content_from_format',\
_cairo_content_from_pixman_format,'_cairo_content_from_pixman_format',\
_cairo_contour_add,'_cairo_contour_add',\
_cairo_contour_add_reversed,'_cairo_contour_add_reversed',\
_cairo_contour_fini,'_cairo_contour_fini',\
_cairo_contour_init,'_cairo_contour_init',\
_cairo_contour_reset,'_cairo_contour_reset',\
_cairo_contour_reverse,'_cairo_contour_reverse',\
_cairo_contour_simplify,'_cairo_contour_simplify',\
_cairo_create_in_error,'_cairo_create_in_error',\
_cairo_damage_add_box,'_cairo_damage_add_box',\
_cairo_damage_add_rectangle,'_cairo_damage_add_rectangle',\
_cairo_damage_add_region,'_cairo_damage_add_region',\
_cairo_damage_create,'_cairo_damage_create',\
_cairo_damage_create_in_error,'_cairo_damage_create_in_error',\
_cairo_damage_destroy,'_cairo_damage_destroy',\
_cairo_damage_reduce,'_cairo_damage_reduce',\
_cairo_debug_print_boxes,'_cairo_debug_print_boxes',\
_cairo_debug_print_clip,'_cairo_debug_print_clip',\
_cairo_debug_print_contour,'_cairo_debug_print_contour',\
_cairo_debug_print_path,'_cairo_debug_print_path',\
_cairo_debug_print_pattern,'_cairo_debug_print_pattern',\
_cairo_debug_print_polygon,'_cairo_debug_print_polygon',\
_cairo_debug_print_traps,'_cairo_debug_print_traps',\
_cairo_default_context_create,'_cairo_default_context_create',\
_cairo_default_context_fini,'_cairo_default_context_fini',\
_cairo_default_context_init,'_cairo_default_context_init',\
_cairo_default_context_reset_static_data,'_cairo_default_context_reset_static_data',\
_cairo_deflate_stream_create,'_cairo_deflate_stream_create',\
_cairo_device_create_in_error,'_cairo_device_create_in_error',\
_cairo_device_init,'_cairo_device_init',\
_cairo_device_set_error,'_cairo_device_set_error',\
_cairo_empty_rectangle,'_cairo_empty_rectangle',\
_cairo_error,'_cairo_error',\
_cairo_fallback_compositor,'_cairo_fallback_compositor',\
_cairo_fini,'_cairo_fini',\
_cairo_font_face_init,'_cairo_font_face_init',\
_cairo_font_face_is_user,'_cairo_font_face_is_user',\
_cairo_font_face_nil,'_cairo_font_face_nil',\
_cairo_font_face_set_error,'_cairo_font_face_set_error',\
_cairo_font_face_twin_create_fallback,'_cairo_font_face_twin_create_fallback',\
_cairo_font_face_twin_create_for_toy,'_cairo_font_face_twin_create_for_toy',\
_cairo_font_options_get_lcd_filter,'_cairo_font_options_get_lcd_filter',\
_cairo_font_options_get_round_glyph_positions,'_cairo_font_options_get_round_glyph_positions',\
_cairo_font_options_init_copy,'_cairo_font_options_init_copy',\
_cairo_font_options_init_default,'_cairo_font_options_init_default',\
_cairo_font_options_set_lcd_filter,'_cairo_font_options_set_lcd_filter',\
_cairo_font_options_set_round_glyph_positions,'_cairo_font_options_set_round_glyph_positions',\
_cairo_format_bits_per_pixel,'_cairo_format_bits_per_pixel',\
_cairo_format_from_content,'_cairo_format_from_content',\
_cairo_format_from_pixman_format,'_cairo_format_from_pixman_format',\
_cairo_format_to_pixman_format_code,'_cairo_format_to_pixman_format_code',\
_cairo_freelist_alloc,'_cairo_freelist_alloc',\
_cairo_freelist_calloc,'_cairo_freelist_calloc',\
_cairo_freelist_fini,'_cairo_freelist_fini',\
_cairo_freelist_free,'_cairo_freelist_free',\
_cairo_freelist_init,'_cairo_freelist_init',\
_cairo_freepool_alloc_array,'_cairo_freepool_alloc_array',\
_cairo_freepool_alloc_from_new_pool,'_cairo_freepool_alloc_from_new_pool',\
_cairo_freepool_fini,'_cairo_freepool_fini',\
_cairo_freepool_init,'_cairo_freepool_init',\
_cairo_ft_font_face_backend,'_cairo_ft_font_face_backend',\
_cairo_ft_font_reset_static_data,'_cairo_ft_font_reset_static_data',\
_cairo_ft_scaled_font_get_load_flags,'_cairo_ft_scaled_font_get_load_flags',\
_cairo_ft_unscaled_font_map_mutex,'_cairo_ft_unscaled_font_map_mutex',\
_cairo_glyph_cache_mutex,'_cairo_glyph_cache_mutex',\
_cairo_gradient_pattern_box_to_parameter,'_cairo_gradient_pattern_box_to_parameter',\
_cairo_gradient_pattern_fit_to_range,'_cairo_gradient_pattern_fit_to_range',\
_cairo_gradient_pattern_interpolate,'_cairo_gradient_pattern_interpolate',\
_cairo_gradient_pattern_is_solid,'_cairo_gradient_pattern_is_solid',\
_cairo_gstate_backend_to_user_rectangle,'_cairo_gstate_backend_to_user_rectangle',\
_cairo_gstate_clip,'_cairo_gstate_clip',\
_cairo_gstate_clip_extents,'_cairo_gstate_clip_extents',\
_cairo_gstate_copy_clip_rectangle_list,'_cairo_gstate_copy_clip_rectangle_list',\
_cairo_gstate_copy_page,'_cairo_gstate_copy_page',\
_cairo_gstate_device_to_user,'_cairo_gstate_device_to_user',\
_cairo_gstate_device_to_user_distance,'_cairo_gstate_device_to_user_distance',\
_cairo_gstate_fill,'_cairo_gstate_fill',\
_cairo_gstate_fill_extents,'_cairo_gstate_fill_extents',\
_cairo_gstate_fini,'_cairo_gstate_fini',\
_cairo_gstate_get_antialias,'_cairo_gstate_get_antialias',\
_cairo_gstate_get_clip,'_cairo_gstate_get_clip',\
_cairo_gstate_get_dash,'_cairo_gstate_get_dash',\
_cairo_gstate_get_fill_rule,'_cairo_gstate_get_fill_rule',\
_cairo_gstate_get_font_extents,'_cairo_gstate_get_font_extents',\
_cairo_gstate_get_font_face,'_cairo_gstate_get_font_face',\
_cairo_gstate_get_font_matrix,'_cairo_gstate_get_font_matrix',\
_cairo_gstate_get_font_options,'_cairo_gstate_get_font_options',\
_cairo_gstate_get_line_cap,'_cairo_gstate_get_line_cap',\
_cairo_gstate_get_line_join,'_cairo_gstate_get_line_join',\
_cairo_gstate_get_line_width,'_cairo_gstate_get_line_width',\
_cairo_gstate_get_matrix,'_cairo_gstate_get_matrix',\
_cairo_gstate_get_miter_limit,'_cairo_gstate_get_miter_limit',\
_cairo_gstate_get_opacity,'_cairo_gstate_get_opacity',\
_cairo_gstate_get_operator,'_cairo_gstate_get_operator',\
_cairo_gstate_get_original_target,'_cairo_gstate_get_original_target',\
_cairo_gstate_get_scaled_font,'_cairo_gstate_get_scaled_font',\
_cairo_gstate_get_source,'_cairo_gstate_get_source',\
_cairo_gstate_get_target,'_cairo_gstate_get_target',\
_cairo_gstate_get_tolerance,'_cairo_gstate_get_tolerance',\
_cairo_gstate_glyph_extents,'_cairo_gstate_glyph_extents',\
_cairo_gstate_glyph_path,'_cairo_gstate_glyph_path',\
_cairo_gstate_identity_matrix,'_cairo_gstate_identity_matrix',\
_cairo_gstate_in_clip,'_cairo_gstate_in_clip',\
_cairo_gstate_in_fill,'_cairo_gstate_in_fill',\
_cairo_gstate_in_stroke,'_cairo_gstate_in_stroke',\
_cairo_gstate_init,'_cairo_gstate_init',\
_cairo_gstate_is_group,'_cairo_gstate_is_group',\
_cairo_gstate_mask,'_cairo_gstate_mask',\
_cairo_gstate_paint,'_cairo_gstate_paint',\
_cairo_gstate_path_extents,'_cairo_gstate_path_extents',\
_cairo_gstate_redirect_target,'_cairo_gstate_redirect_target',\
_cairo_gstate_reset_clip,'_cairo_gstate_reset_clip',\
_cairo_gstate_restore,'_cairo_gstate_restore',\
_cairo_gstate_rotate,'_cairo_gstate_rotate',\
_cairo_gstate_save,'_cairo_gstate_save',\
_cairo_gstate_scale,'_cairo_gstate_scale',\
_cairo_gstate_set_antialias,'_cairo_gstate_set_antialias',\
_cairo_gstate_set_dash,'_cairo_gstate_set_dash',\
_cairo_gstate_set_fill_rule,'_cairo_gstate_set_fill_rule',\
_cairo_gstate_set_font_face,'_cairo_gstate_set_font_face',\
_cairo_gstate_set_font_matrix,'_cairo_gstate_set_font_matrix',\
_cairo_gstate_set_font_options,'_cairo_gstate_set_font_options',\
_cairo_gstate_set_font_size,'_cairo_gstate_set_font_size',\
_cairo_gstate_set_line_cap,'_cairo_gstate_set_line_cap',\
_cairo_gstate_set_line_join,'_cairo_gstate_set_line_join',\
_cairo_gstate_set_line_width,'_cairo_gstate_set_line_width',\
_cairo_gstate_set_matrix,'_cairo_gstate_set_matrix',\
_cairo_gstate_set_miter_limit,'_cairo_gstate_set_miter_limit',\
_cairo_gstate_set_opacity,'_cairo_gstate_set_opacity',\
_cairo_gstate_set_operator,'_cairo_gstate_set_operator',\
_cairo_gstate_set_source,'_cairo_gstate_set_source',\
_cairo_gstate_set_tolerance,'_cairo_gstate_set_tolerance',\
_cairo_gstate_show_page,'_cairo_gstate_show_page',\
_cairo_gstate_show_text_glyphs,'_cairo_gstate_show_text_glyphs',\
_cairo_gstate_stroke,'_cairo_gstate_stroke',\
_cairo_gstate_stroke_extents,'_cairo_gstate_stroke_extents',\
_cairo_gstate_transform,'_cairo_gstate_transform',\
_cairo_gstate_translate,'_cairo_gstate_translate',\
_cairo_gstate_user_to_device,'_cairo_gstate_user_to_device',\
_cairo_gstate_user_to_device_distance,'_cairo_gstate_user_to_device_distance',\
_cairo_half_from_float,'_cairo_half_from_float',\
_cairo_hash_bytes,'_cairo_hash_bytes',\
_cairo_hash_string,'_cairo_hash_string',\
_cairo_hash_table_create,'_cairo_hash_table_create',\
_cairo_hash_table_destroy,'_cairo_hash_table_destroy',\
_cairo_hash_table_foreach,'_cairo_hash_table_foreach',\
_cairo_hash_table_insert,'_cairo_hash_table_insert',\
_cairo_hash_table_lookup,'_cairo_hash_table_lookup',\
_cairo_hash_table_random_entry,'_cairo_hash_table_random_entry',\
_cairo_hash_table_remove,'_cairo_hash_table_remove',\
_cairo_hull_compute,'_cairo_hull_compute',\
_cairo_image_analyze_color,'_cairo_image_analyze_color',\
_cairo_image_analyze_transparency,'_cairo_image_analyze_transparency',\
_cairo_image_info_get_jpeg_info,'_cairo_image_info_get_jpeg_info',\
_cairo_image_info_get_jpx_info,'_cairo_image_info_get_jpx_info',\
_cairo_image_info_get_png_info,'_cairo_image_info_get_png_info',\
_cairo_image_mask_compositor_get,'_cairo_image_mask_compositor_get',\
_cairo_image_reset_static_data,'_cairo_image_reset_static_data',\
_cairo_image_scaled_glyph_fini,'_cairo_image_scaled_glyph_fini',\
_cairo_image_solid_cache_mutex,'_cairo_image_solid_cache_mutex',\
_cairo_image_source_backend,'_cairo_image_source_backend',\
_cairo_image_source_create_for_pattern,'_cairo_image_source_create_for_pattern',\
_cairo_image_spans_compositor_get,'_cairo_image_spans_compositor_get',\
_cairo_image_surface_acquire_source_image,'_cairo_image_surface_acquire_source_image',\
_cairo_image_surface_assume_ownership_of_data,'_cairo_image_surface_assume_ownership_of_data',\
_cairo_image_surface_backend,'_cairo_image_surface_backend',\
_cairo_image_surface_clone_subimage,'_cairo_image_surface_clone_subimage',\
_cairo_image_surface_coerce,'_cairo_image_surface_coerce',\
_cairo_image_surface_coerce_to_format,'_cairo_image_surface_coerce_to_format',\
_cairo_image_surface_create_for_pixman_image,'_cairo_image_surface_create_for_pixman_image',\
_cairo_image_surface_create_from_image,'_cairo_image_surface_create_from_image',\
_cairo_image_surface_create_similar,'_cairo_image_surface_create_similar',\
_cairo_image_surface_create_with_content,'_cairo_image_surface_create_with_content',\
_cairo_image_surface_create_with_pixman_format,'_cairo_image_surface_create_with_pixman_format',\
_cairo_image_surface_fill,'_cairo_image_surface_fill',\
_cairo_image_surface_finish,'_cairo_image_surface_finish',\
_cairo_image_surface_get_extents,'_cairo_image_surface_get_extents',\
_cairo_image_surface_get_font_options,'_cairo_image_surface_get_font_options',\
_cairo_image_surface_glyphs,'_cairo_image_surface_glyphs',\
_cairo_image_surface_init,'_cairo_image_surface_init',\
_cairo_image_surface_map_to_image,'_cairo_image_surface_map_to_image',\
_cairo_image_surface_mask,'_cairo_image_surface_mask',\
_cairo_image_surface_paint,'_cairo_image_surface_paint',\
_cairo_image_surface_release_source_image,'_cairo_image_surface_release_source_image',\
_cairo_image_surface_snapshot,'_cairo_image_surface_snapshot',\
_cairo_image_surface_source,'_cairo_image_surface_source',\
_cairo_image_surface_stroke,'_cairo_image_surface_stroke',\
_cairo_image_surface_unmap_image,'_cairo_image_surface_unmap_image',\
_cairo_image_traps_compositor_get,'_cairo_image_traps_compositor_get',\
_cairo_init,'_cairo_init',\
_cairo_int128_cmp,'_cairo_int128_cmp',\
_cairo_int128_divrem,'_cairo_int128_divrem',\
_cairo_int128_lt,'_cairo_int128_lt',\
_cairo_int32_to_int128,'_cairo_int32_to_int128',\
_cairo_int64_to_int128,'_cairo_int64_to_int128',\
_cairo_int64x64_128_mul,'_cairo_int64x64_128_mul',\
_cairo_int_96by64_32x64_divrem,'_cairo_int_96by64_32x64_divrem',\
_cairo_int_surface_create_in_error,'_cairo_int_surface_create_in_error',\
_cairo_intern_string,'_cairo_intern_string',\
_cairo_intern_string_mutex,'_cairo_intern_string_mutex',\
_cairo_intern_string_reset_static_data,'_cairo_intern_string_reset_static_data',\
_cairo_linear_pattern_equal,'_cairo_linear_pattern_equal',\
_cairo_linear_pattern_hash,'_cairo_linear_pattern_hash',\
_cairo_lround,'_cairo_lround',\
_cairo_lzw_compress,'_cairo_lzw_compress',\
_cairo_mask_compositor_init,'_cairo_mask_compositor_init',\
_cairo_matrix_compute_basis_scale_factors,'_cairo_matrix_compute_basis_scale_factors',\
_cairo_matrix_compute_determinant,'_cairo_matrix_compute_determinant',\
_cairo_matrix_get_affine,'_cairo_matrix_get_affine',\
_cairo_matrix_has_unity_scale,'_cairo_matrix_has_unity_scale',\
_cairo_matrix_is_integer_translation,'_cairo_matrix_is_integer_translation',\
_cairo_matrix_is_invertible,'_cairo_matrix_is_invertible',\
_cairo_matrix_is_pixel_exact,'_cairo_matrix_is_pixel_exact',\
_cairo_matrix_is_pixman_translation,'_cairo_matrix_is_pixman_translation',\
_cairo_matrix_is_scale_0,'_cairo_matrix_is_scale_0',\
_cairo_matrix_multiply,'_cairo_matrix_multiply',\
_cairo_matrix_to_pixman_matrix_offset,'_cairo_matrix_to_pixman_matrix_offset',\
_cairo_matrix_transform_bounding_box,'_cairo_matrix_transform_bounding_box',\
_cairo_matrix_transform_bounding_box_fixed,'_cairo_matrix_transform_bounding_box_fixed',\
_cairo_matrix_transformed_circle_major_axis,'_cairo_matrix_transformed_circle_major_axis',\
_cairo_memory_stream_copy,'_cairo_memory_stream_copy',\
_cairo_memory_stream_create,'_cairo_memory_stream_create',\
_cairo_memory_stream_destroy,'_cairo_memory_stream_destroy',\
_cairo_memory_stream_length,'_cairo_memory_stream_length',\
_cairo_mempool_alloc,'_cairo_mempool_alloc',\
_cairo_mempool_fini,'_cairo_mempool_fini',\
_cairo_mempool_free,'_cairo_mempool_free',\
_cairo_mempool_init,'_cairo_mempool_init',\
_cairo_mesh_pattern_coord_box,'_cairo_mesh_pattern_coord_box',\
_cairo_mesh_pattern_rasterize,'_cairo_mesh_pattern_rasterize',\
_cairo_mono_scan_converter_add_polygon,'_cairo_mono_scan_converter_add_polygon',\
_cairo_mono_scan_converter_create,'_cairo_mono_scan_converter_create',\
_cairo_null_stream_create,'_cairo_null_stream_create',\
_cairo_null_surface_create,'_cairo_null_surface_create',\
_cairo_observers_notify,'_cairo_observers_notify',\
_cairo_operator_bounded_by_either,'_cairo_operator_bounded_by_either',\
_cairo_operator_bounded_by_mask,'_cairo_operator_bounded_by_mask',\
_cairo_operator_bounded_by_source,'_cairo_operator_bounded_by_source',\
_cairo_output_stream_close,'_cairo_output_stream_close',\
_cairo_output_stream_create,'_cairo_output_stream_create',\
_cairo_output_stream_create_for_file,'_cairo_output_stream_create_for_file',\
_cairo_output_stream_create_for_filename,'_cairo_output_stream_create_for_filename',\
_cairo_output_stream_create_in_error,'_cairo_output_stream_create_in_error',\
_cairo_output_stream_destroy,'_cairo_output_stream_destroy',\
_cairo_output_stream_fini,'_cairo_output_stream_fini',\
_cairo_output_stream_flush,'_cairo_output_stream_flush',\
_cairo_output_stream_get_position,'_cairo_output_stream_get_position',\
_cairo_output_stream_get_status,'_cairo_output_stream_get_status',\
_cairo_output_stream_init,'_cairo_output_stream_init',\
_cairo_output_stream_nil,'_cairo_output_stream_nil',\
_cairo_output_stream_printf,'_cairo_output_stream_printf',\
_cairo_output_stream_vprintf,'_cairo_output_stream_vprintf',\
_cairo_output_stream_write,'_cairo_output_stream_write',\
_cairo_output_stream_write_hex_string,'_cairo_output_stream_write_hex_string',\
_cairo_paginated_surface_create,'_cairo_paginated_surface_create',\
_cairo_paginated_surface_get_recording,'_cairo_paginated_surface_get_recording',\
_cairo_paginated_surface_get_target,'_cairo_paginated_surface_get_target',\
_cairo_paginated_surface_set_size,'_cairo_paginated_surface_set_size',\
_cairo_path_append_to_context,'_cairo_path_append_to_context',\
_cairo_path_bounder_extents,'_cairo_path_bounder_extents',\
_cairo_path_create,'_cairo_path_create',\
_cairo_path_create_flat,'_cairo_path_create_flat',\
_cairo_path_create_in_error,'_cairo_path_create_in_error',\
_cairo_path_fixed_append,'_cairo_path_fixed_append',\
_cairo_path_fixed_approximate_clip_extents,'_cairo_path_fixed_approximate_clip_extents',\
_cairo_path_fixed_approximate_fill_extents,'_cairo_path_fixed_approximate_fill_extents',\
_cairo_path_fixed_approximate_stroke_extents,'_cairo_path_fixed_approximate_stroke_extents',\
_cairo_path_fixed_close_path,'_cairo_path_fixed_close_path',\
_cairo_path_fixed_create,'_cairo_path_fixed_create',\
_cairo_path_fixed_curve_to,'_cairo_path_fixed_curve_to',\
_cairo_path_fixed_destroy,'_cairo_path_fixed_destroy',\
_cairo_path_fixed_equal,'_cairo_path_fixed_equal',\
_cairo_path_fixed_extents,'_cairo_path_fixed_extents',\
_cairo_path_fixed_fill_extents,'_cairo_path_fixed_fill_extents',\
_cairo_path_fixed_fill_rectilinear_to_boxes,'_cairo_path_fixed_fill_rectilinear_to_boxes',\
_cairo_path_fixed_fill_rectilinear_to_polygon,'_cairo_path_fixed_fill_rectilinear_to_polygon',\
_cairo_path_fixed_fill_to_polygon,'_cairo_path_fixed_fill_to_polygon',\
_cairo_path_fixed_fill_to_traps,'_cairo_path_fixed_fill_to_traps',\
_cairo_path_fixed_fini,'_cairo_path_fixed_fini',\
_cairo_path_fixed_get_current_point,'_cairo_path_fixed_get_current_point',\
_cairo_path_fixed_hash,'_cairo_path_fixed_hash',\
_cairo_path_fixed_in_fill,'_cairo_path_fixed_in_fill',\
_cairo_path_fixed_init,'_cairo_path_fixed_init',\
_cairo_path_fixed_init_copy,'_cairo_path_fixed_init_copy',\
_cairo_path_fixed_interpret,'_cairo_path_fixed_interpret',\
_cairo_path_fixed_interpret_flat,'_cairo_path_fixed_interpret_flat',\
_cairo_path_fixed_is_box,'_cairo_path_fixed_is_box',\
_cairo_path_fixed_is_rectangle,'_cairo_path_fixed_is_rectangle',\
_cairo_path_fixed_is_simple_quad,'_cairo_path_fixed_is_simple_quad',\
_cairo_path_fixed_is_stroke_box,'_cairo_path_fixed_is_stroke_box',\
_cairo_path_fixed_iter_at_end,'_cairo_path_fixed_iter_at_end',\
_cairo_path_fixed_iter_init,'_cairo_path_fixed_iter_init',\
_cairo_path_fixed_iter_is_fill_box,'_cairo_path_fixed_iter_is_fill_box',\
_cairo_path_fixed_line_to,'_cairo_path_fixed_line_to',\
_cairo_path_fixed_move_to,'_cairo_path_fixed_move_to',\
_cairo_path_fixed_new_sub_path,'_cairo_path_fixed_new_sub_path',\
_cairo_path_fixed_rel_curve_to,'_cairo_path_fixed_rel_curve_to',\
_cairo_path_fixed_rel_line_to,'_cairo_path_fixed_rel_line_to',\
_cairo_path_fixed_rel_move_to,'_cairo_path_fixed_rel_move_to',\
_cairo_path_fixed_size,'_cairo_path_fixed_size',\
_cairo_path_fixed_stroke_dashed_to_polygon,'_cairo_path_fixed_stroke_dashed_to_polygon',\
_cairo_path_fixed_stroke_extents,'_cairo_path_fixed_stroke_extents',\
_cairo_path_fixed_stroke_polygon_to_traps,'_cairo_path_fixed_stroke_polygon_to_traps',\
_cairo_path_fixed_stroke_rectilinear_to_boxes,'_cairo_path_fixed_stroke_rectilinear_to_boxes',\
_cairo_path_fixed_stroke_to_polygon,'_cairo_path_fixed_stroke_to_polygon',\
_cairo_path_fixed_stroke_to_shaper,'_cairo_path_fixed_stroke_to_shaper',\
_cairo_path_fixed_stroke_to_traps,'_cairo_path_fixed_stroke_to_traps',\
_cairo_path_fixed_stroke_to_tristrip,'_cairo_path_fixed_stroke_to_tristrip',\
_cairo_path_fixed_transform,'_cairo_path_fixed_transform',\
_cairo_path_fixed_translate,'_cairo_path_fixed_translate',\
_cairo_pattern_alpha_range,'_cairo_pattern_alpha_range',\
_cairo_pattern_analyze_filter,'_cairo_pattern_analyze_filter',\
_cairo_pattern_black,'_cairo_pattern_black',\
_cairo_pattern_clear,'_cairo_pattern_clear',\
_cairo_pattern_create_copy,'_cairo_pattern_create_copy',\
_cairo_pattern_create_in_error,'_cairo_pattern_create_in_error',\
_cairo_pattern_create_solid,'_cairo_pattern_create_solid',\
_cairo_pattern_equal,'_cairo_pattern_equal',\
_cairo_pattern_fini,'_cairo_pattern_fini',\
_cairo_pattern_get_extents,'_cairo_pattern_get_extents',\
_cairo_pattern_get_ink_extents,'_cairo_pattern_get_ink_extents',\
_cairo_pattern_hash,'_cairo_pattern_hash',\
_cairo_pattern_init,'_cairo_pattern_init',\
_cairo_pattern_init_copy,'_cairo_pattern_init_copy',\
_cairo_pattern_init_for_surface,'_cairo_pattern_init_for_surface',\
_cairo_pattern_init_snapshot,'_cairo_pattern_init_snapshot',\
_cairo_pattern_init_solid,'_cairo_pattern_init_solid',\
_cairo_pattern_init_static_copy,'_cairo_pattern_init_static_copy',\
_cairo_pattern_is_clear,'_cairo_pattern_is_clear',\
_cairo_pattern_is_opaque,'_cairo_pattern_is_opaque',\
_cairo_pattern_is_opaque_solid,'_cairo_pattern_is_opaque_solid',\
_cairo_pattern_reset_static_data,'_cairo_pattern_reset_static_data',\
_cairo_pattern_sampled_area,'_cairo_pattern_sampled_area',\
_cairo_pattern_solid_surface_cache_lock,'_cairo_pattern_solid_surface_cache_lock',\
_cairo_pattern_transform,'_cairo_pattern_transform',\
_cairo_pattern_white,'_cairo_pattern_white',\
_cairo_pdf_operators_clip,'_cairo_pdf_operators_clip',\
_cairo_pdf_operators_emit_stroke_style,'_cairo_pdf_operators_emit_stroke_style',\
_cairo_pdf_operators_enable_actual_text,'_cairo_pdf_operators_enable_actual_text',\
_cairo_pdf_operators_fill,'_cairo_pdf_operators_fill',\
_cairo_pdf_operators_fill_stroke,'_cairo_pdf_operators_fill_stroke',\
_cairo_pdf_operators_fini,'_cairo_pdf_operators_fini',\
_cairo_pdf_operators_flush,'_cairo_pdf_operators_flush',\
_cairo_pdf_operators_init,'_cairo_pdf_operators_init',\
_cairo_pdf_operators_reset,'_cairo_pdf_operators_reset',\
_cairo_pdf_operators_set_cairo_to_pdf_matrix,'_cairo_pdf_operators_set_cairo_to_pdf_matrix',\
_cairo_pdf_operators_set_font_subsets_callback,'_cairo_pdf_operators_set_font_subsets_callback',\
_cairo_pdf_operators_set_stream,'_cairo_pdf_operators_set_stream',\
_cairo_pdf_operators_show_text_glyphs,'_cairo_pdf_operators_show_text_glyphs',\
_cairo_pdf_operators_stroke,'_cairo_pdf_operators_stroke',\
_cairo_pdf_shading_fini,'_cairo_pdf_shading_fini',\
_cairo_pdf_shading_init_alpha,'_cairo_pdf_shading_init_alpha',\
_cairo_pdf_shading_init_color,'_cairo_pdf_shading_init_color',\
_cairo_pen_add_points,'_cairo_pen_add_points',\
_cairo_pen_find_active_ccw_vertex_index,'_cairo_pen_find_active_ccw_vertex_index',\
_cairo_pen_find_active_ccw_vertices,'_cairo_pen_find_active_ccw_vertices',\
_cairo_pen_find_active_cw_vertex_index,'_cairo_pen_find_active_cw_vertex_index',\
_cairo_pen_find_active_cw_vertices,'_cairo_pen_find_active_cw_vertices',\
_cairo_pen_fini,'_cairo_pen_fini',\
_cairo_pen_init,'_cairo_pen_init',\
_cairo_pen_init_copy,'_cairo_pen_init_copy',\
_cairo_pen_vertices_needed,'_cairo_pen_vertices_needed',\
_cairo_polygon_add_contour,'_cairo_polygon_add_contour',\
_cairo_polygon_add_external_edge,'_cairo_polygon_add_external_edge',\
_cairo_polygon_add_line,'_cairo_polygon_add_line',\
_cairo_polygon_fini,'_cairo_polygon_fini',\
_cairo_polygon_init,'_cairo_polygon_init',\
_cairo_polygon_init_box_array,'_cairo_polygon_init_box_array',\
_cairo_polygon_init_boxes,'_cairo_polygon_init_boxes',\
_cairo_polygon_init_with_clip,'_cairo_polygon_init_with_clip',\
_cairo_polygon_intersect,'_cairo_polygon_intersect',\
_cairo_polygon_intersect_with_boxes,'_cairo_polygon_intersect_with_boxes',\
_cairo_polygon_limit,'_cairo_polygon_limit',\
_cairo_polygon_limit_to_clip,'_cairo_polygon_limit_to_clip',\
_cairo_polygon_reduce,'_cairo_polygon_reduce',\
_cairo_polygon_translate,'_cairo_polygon_translate',\
_cairo_ps_standard_encoding_to_glyphname,'_cairo_ps_standard_encoding_to_glyphname',\
_cairo_radial_pattern_equal,'_cairo_radial_pattern_equal',\
_cairo_radial_pattern_focus_is_inside,'_cairo_radial_pattern_focus_is_inside',\
_cairo_radial_pattern_hash,'_cairo_radial_pattern_hash',\
_cairo_raster_source_pattern_acquire,'_cairo_raster_source_pattern_acquire',\
_cairo_raster_source_pattern_finish,'_cairo_raster_source_pattern_finish',\
_cairo_raster_source_pattern_init_copy,'_cairo_raster_source_pattern_init_copy',\
_cairo_raster_source_pattern_release,'_cairo_raster_source_pattern_release',\
_cairo_raster_source_pattern_snapshot,'_cairo_raster_source_pattern_snapshot',\
_cairo_rasterise_polygon_to_boxes,'_cairo_rasterise_polygon_to_boxes',\
_cairo_rasterise_polygon_to_traps,'_cairo_rasterise_polygon_to_traps',\
_cairo_recording_surface_get_bbox,'_cairo_recording_surface_get_bbox',\
_cairo_recording_surface_get_ink_bbox,'_cairo_recording_surface_get_ink_bbox',\
_cairo_recording_surface_get_path,'_cairo_recording_surface_get_path',\
_cairo_recording_surface_replay,'_cairo_recording_surface_replay',\
_cairo_recording_surface_replay_and_create_regions,'_cairo_recording_surface_replay_and_create_regions',\
_cairo_recording_surface_replay_one,'_cairo_recording_surface_replay_one',\
_cairo_recording_surface_replay_region,'_cairo_recording_surface_replay_region',\
_cairo_recording_surface_replay_with_clip,'_cairo_recording_surface_replay_with_clip',\
_cairo_rectangle_int_from_double,'_cairo_rectangle_int_from_double',\
_cairo_rectangle_intersect,'_cairo_rectangle_intersect',\
_cairo_rectangle_list_create_in_error,'_cairo_rectangle_list_create_in_error',\
_cairo_rectangle_union,'_cairo_rectangle_union',\
_cairo_rectangles_nil,'_cairo_rectangles_nil',\
_cairo_rectangular_scan_converter_add_box,'_cairo_rectangular_scan_converter_add_box',\
_cairo_rectangular_scan_converter_init,'_cairo_rectangular_scan_converter_init',\
_cairo_region_create_from_boxes,'_cairo_region_create_from_boxes',\
_cairo_region_create_in_error,'_cairo_region_create_in_error',\
_cairo_region_fini,'_cairo_region_fini',\
_cairo_region_get_boxes,'_cairo_region_get_boxes',\
_cairo_region_init,'_cairo_region_init',\
_cairo_region_init_rectangle,'_cairo_region_init_rectangle',\
_cairo_rtree_evict_random,'_cairo_rtree_evict_random',\
_cairo_rtree_fini,'_cairo_rtree_fini',\
_cairo_rtree_foreach,'_cairo_rtree_foreach',\
_cairo_rtree_init,'_cairo_rtree_init',\
_cairo_rtree_insert,'_cairo_rtree_insert',\
_cairo_rtree_node_collapse,'_cairo_rtree_node_collapse',\
_cairo_rtree_node_create,'_cairo_rtree_node_create',\
_cairo_rtree_node_destroy,'_cairo_rtree_node_destroy',\
_cairo_rtree_node_insert,'_cairo_rtree_node_insert',\
_cairo_rtree_node_remove,'_cairo_rtree_node_remove',\
_cairo_rtree_reset,'_cairo_rtree_reset',\
_cairo_rtree_unpin,'_cairo_rtree_unpin',\
_cairo_scaled_font_attach_private,'_cairo_scaled_font_attach_private',\
_cairo_scaled_font_create_in_error,'_cairo_scaled_font_create_in_error',\
_cairo_scaled_font_error_mutex,'_cairo_scaled_font_error_mutex',\
_cairo_scaled_font_find_private,'_cairo_scaled_font_find_private',\
_cairo_scaled_font_fini,'_cairo_scaled_font_fini',\
_cairo_scaled_font_freeze_cache,'_cairo_scaled_font_freeze_cache',\
_cairo_scaled_font_get_max_scale,'_cairo_scaled_font_get_max_scale',\
_cairo_scaled_font_glyph_approximate_extents,'_cairo_scaled_font_glyph_approximate_extents',\
_cairo_scaled_font_glyph_device_extents,'_cairo_scaled_font_glyph_device_extents',\
_cairo_scaled_font_glyph_path,'_cairo_scaled_font_glyph_path',\
_cairo_scaled_font_init,'_cairo_scaled_font_init',\
_cairo_scaled_font_is_ft,'_cairo_scaled_font_is_ft',\
_cairo_scaled_font_map_destroy,'_cairo_scaled_font_map_destroy',\
_cairo_scaled_font_map_mutex,'_cairo_scaled_font_map_mutex',\
_cairo_scaled_font_register_placeholder_and_unlock_font_map,'_cairo_scaled_font_register_placeholder_and_unlock_font_map',\
_cairo_scaled_font_reset_cache,'_cairo_scaled_font_reset_cache',\
_cairo_scaled_font_reset_static_data,'_cairo_scaled_font_reset_static_data',\
_cairo_scaled_font_set_error,'_cairo_scaled_font_set_error',\
_cairo_scaled_font_set_metrics,'_cairo_scaled_font_set_metrics',\
_cairo_scaled_font_subset_create_glyph_names,'_cairo_scaled_font_subset_create_glyph_names',\
_cairo_scaled_font_subsets_create_composite,'_cairo_scaled_font_subsets_create_composite',\
_cairo_scaled_font_subsets_create_scaled,'_cairo_scaled_font_subsets_create_scaled',\
_cairo_scaled_font_subsets_create_simple,'_cairo_scaled_font_subsets_create_simple',\
_cairo_scaled_font_subsets_destroy,'_cairo_scaled_font_subsets_destroy',\
_cairo_scaled_font_subsets_enable_latin_subset,'_cairo_scaled_font_subsets_enable_latin_subset',\
_cairo_scaled_font_subsets_foreach_scaled,'_cairo_scaled_font_subsets_foreach_scaled',\
_cairo_scaled_font_subsets_foreach_unscaled,'_cairo_scaled_font_subsets_foreach_unscaled',\
_cairo_scaled_font_subsets_foreach_user,'_cairo_scaled_font_subsets_foreach_user',\
_cairo_scaled_font_subsets_map_glyph,'_cairo_scaled_font_subsets_map_glyph',\
_cairo_scaled_font_thaw_cache,'_cairo_scaled_font_thaw_cache',\
_cairo_scaled_font_unregister_placeholder_and_lock_font_map,'_cairo_scaled_font_unregister_placeholder_and_lock_font_map',\
_cairo_scaled_glyph_attach_private,'_cairo_scaled_glyph_attach_private',\
_cairo_scaled_glyph_find_private,'_cairo_scaled_glyph_find_private',\
_cairo_scaled_glyph_lookup,'_cairo_scaled_glyph_lookup',\
_cairo_scaled_glyph_page_cache_mutex,'_cairo_scaled_glyph_page_cache_mutex',\
_cairo_scaled_glyph_set_metrics,'_cairo_scaled_glyph_set_metrics',\
_cairo_scaled_glyph_set_path,'_cairo_scaled_glyph_set_path',\
_cairo_scaled_glyph_set_recording_surface,'_cairo_scaled_glyph_set_recording_surface',\
_cairo_scaled_glyph_set_surface,'_cairo_scaled_glyph_set_surface',\
_cairo_scan_converter_create_in_error,'_cairo_scan_converter_create_in_error',\
_cairo_scan_converter_set_error,'_cairo_scan_converter_set_error',\
_cairo_scan_converter_status,'_cairo_scan_converter_status',\
_cairo_script_context_attach_snapshots,'_cairo_script_context_attach_snapshots',\
_cairo_script_context_create_internal,'_cairo_script_context_create_internal',\
_cairo_shape_mask_compositor_init,'_cairo_shape_mask_compositor_init',\
_cairo_slope_compare,'_cairo_slope_compare',\
_cairo_span_renderer_create_in_error,'_cairo_span_renderer_create_in_error',\
_cairo_span_renderer_set_error,'_cairo_span_renderer_set_error',\
_cairo_span_renderer_status,'_cairo_span_renderer_status',\
_cairo_spans_compositor_init,'_cairo_spans_compositor_init',\
_cairo_spline_bound,'_cairo_spline_bound',\
_cairo_spline_decompose,'_cairo_spline_decompose',\
_cairo_spline_init,'_cairo_spline_init',\
_cairo_spline_intersects,'_cairo_spline_intersects',\
_cairo_stock_color,'_cairo_stock_color',\
_cairo_stroke_style_dash_approximate,'_cairo_stroke_style_dash_approximate',\
_cairo_stroke_style_dash_can_approximate,'_cairo_stroke_style_dash_can_approximate',\
_cairo_stroke_style_dash_period,'_cairo_stroke_style_dash_period',\
_cairo_stroke_style_dash_stroked,'_cairo_stroke_style_dash_stroked',\
_cairo_stroke_style_fini,'_cairo_stroke_style_fini',\
_cairo_stroke_style_init,'_cairo_stroke_style_init',\
_cairo_stroke_style_init_copy,'_cairo_stroke_style_init_copy',\
_cairo_stroke_style_max_distance_from_path,'_cairo_stroke_style_max_distance_from_path',\
_cairo_stroke_style_max_join_distance_from_path,'_cairo_stroke_style_max_join_distance_from_path',\
_cairo_stroke_style_max_line_distance_from_path,'_cairo_stroke_style_max_line_distance_from_path',\
_cairo_stroker_dash_init,'_cairo_stroker_dash_init',\
_cairo_stroker_dash_start,'_cairo_stroker_dash_start',\
_cairo_stroker_dash_step,'_cairo_stroker_dash_step',\
_cairo_surface_acquire_source_image,'_cairo_surface_acquire_source_image',\
_cairo_surface_attach_snapshot,'_cairo_surface_attach_snapshot',\
_cairo_surface_begin_modification,'_cairo_surface_begin_modification',\
_cairo_surface_clipper_init,'_cairo_surface_clipper_init',\
_cairo_surface_clipper_reset,'_cairo_surface_clipper_reset',\
_cairo_surface_clipper_set_clip,'_cairo_surface_clipper_set_clip',\
_cairo_surface_copy_mime_data,'_cairo_surface_copy_mime_data',\
_cairo_surface_create_for_rectangle_int,'_cairo_surface_create_for_rectangle_int',\
_cairo_surface_create_in_error,'_cairo_surface_create_in_error',\
_cairo_surface_create_similar_scratch,'_cairo_surface_create_similar_scratch',\
_cairo_surface_create_similar_solid,'_cairo_surface_create_similar_solid',\
_cairo_surface_default_acquire_source_image,'_cairo_surface_default_acquire_source_image',\
_cairo_surface_default_release_source_image,'_cairo_surface_default_release_source_image',\
_cairo_surface_default_source,'_cairo_surface_default_source',\
_cairo_surface_detach_snapshot,'_cairo_surface_detach_snapshot',\
_cairo_surface_fallback_fill,'_cairo_surface_fallback_fill',\
_cairo_surface_fallback_glyphs,'_cairo_surface_fallback_glyphs',\
_cairo_surface_fallback_mask,'_cairo_surface_fallback_mask',\
_cairo_surface_fallback_paint,'_cairo_surface_fallback_paint',\
_cairo_surface_fallback_stroke,'_cairo_surface_fallback_stroke',\
_cairo_surface_fill,'_cairo_surface_fill',\
_cairo_surface_fill_stroke,'_cairo_surface_fill_stroke',\
_cairo_surface_flush,'_cairo_surface_flush',\
_cairo_surface_get_extents,'_cairo_surface_get_extents',\
_cairo_surface_get_source,'_cairo_surface_get_source',\
_cairo_surface_has_device_transform,'_cairo_surface_has_device_transform',\
_cairo_surface_has_snapshot,'_cairo_surface_has_snapshot',\
_cairo_surface_init,'_cairo_surface_init',\
_cairo_surface_is_paginated,'_cairo_surface_is_paginated',\
_cairo_surface_map_to_image,'_cairo_surface_map_to_image',\
_cairo_surface_mask,'_cairo_surface_mask',\
_cairo_surface_offset_fill,'_cairo_surface_offset_fill',\
_cairo_surface_offset_glyphs,'_cairo_surface_offset_glyphs',\
_cairo_surface_offset_mask,'_cairo_surface_offset_mask',\
_cairo_surface_offset_paint,'_cairo_surface_offset_paint',\
_cairo_surface_offset_stroke,'_cairo_surface_offset_stroke',\
_cairo_surface_paint,'_cairo_surface_paint',\
_cairo_surface_release_device_reference,'_cairo_surface_release_device_reference',\
_cairo_surface_release_source_image,'_cairo_surface_release_source_image',\
_cairo_surface_set_device_scale,'_cairo_surface_set_device_scale',\
_cairo_surface_set_error,'_cairo_surface_set_error',\
_cairo_surface_set_font_options,'_cairo_surface_set_font_options',\
_cairo_surface_set_resolution,'_cairo_surface_set_resolution',\
_cairo_surface_show_text_glyphs,'_cairo_surface_show_text_glyphs',\
_cairo_surface_snapshot,'_cairo_surface_snapshot',\
_cairo_surface_stroke,'_cairo_surface_stroke',\
_cairo_surface_subsurface_set_snapshot,'_cairo_surface_subsurface_set_snapshot',\
_cairo_surface_unmap_image,'_cairo_surface_unmap_image',\
_cairo_surface_wrapper_acquire_source_image,'_cairo_surface_wrapper_acquire_source_image',\
_cairo_surface_wrapper_create_similar,'_cairo_surface_wrapper_create_similar',\
_cairo_surface_wrapper_fill,'_cairo_surface_wrapper_fill',\
_cairo_surface_wrapper_fill_stroke,'_cairo_surface_wrapper_fill_stroke',\
_cairo_surface_wrapper_fini,'_cairo_surface_wrapper_fini',\
_cairo_surface_wrapper_get_extents,'_cairo_surface_wrapper_get_extents',\
_cairo_surface_wrapper_get_font_options,'_cairo_surface_wrapper_get_font_options',\
_cairo_surface_wrapper_get_target_extents,'_cairo_surface_wrapper_get_target_extents',\
_cairo_surface_wrapper_has_show_text_glyphs,'_cairo_surface_wrapper_has_show_text_glyphs',\
_cairo_surface_wrapper_init,'_cairo_surface_wrapper_init',\
_cairo_surface_wrapper_intersect_extents,'_cairo_surface_wrapper_intersect_extents',\
_cairo_surface_wrapper_mask,'_cairo_surface_wrapper_mask',\
_cairo_surface_wrapper_paint,'_cairo_surface_wrapper_paint',\
_cairo_surface_wrapper_release_source_image,'_cairo_surface_wrapper_release_source_image',\
_cairo_surface_wrapper_set_clip,'_cairo_surface_wrapper_set_clip',\
_cairo_surface_wrapper_set_inverse_transform,'_cairo_surface_wrapper_set_inverse_transform',\
_cairo_surface_wrapper_show_text_glyphs,'_cairo_surface_wrapper_show_text_glyphs',\
_cairo_surface_wrapper_snapshot,'_cairo_surface_wrapper_snapshot',\
_cairo_surface_wrapper_stroke,'_cairo_surface_wrapper_stroke',\
_cairo_tor22_scan_converter_add_polygon,'_cairo_tor22_scan_converter_add_polygon',\
_cairo_tor22_scan_converter_create,'_cairo_tor22_scan_converter_create',\
_cairo_tor_scan_converter_add_polygon,'_cairo_tor_scan_converter_add_polygon',\
_cairo_tor_scan_converter_create,'_cairo_tor_scan_converter_create',\
_cairo_toy_font_face_mutex,'_cairo_toy_font_face_mutex',\
_cairo_toy_font_face_reset_static_data,'_cairo_toy_font_face_reset_static_data',\
_cairo_trapezoid_array_translate_and_scale,'_cairo_trapezoid_array_translate_and_scale',\
_cairo_traps_add_trap,'_cairo_traps_add_trap',\
_cairo_traps_clear,'_cairo_traps_clear',\
_cairo_traps_compositor_init,'_cairo_traps_compositor_init',\
_cairo_traps_contain,'_cairo_traps_contain',\
_cairo_traps_extents,'_cairo_traps_extents',\
_cairo_traps_extract_region,'_cairo_traps_extract_region',\
_cairo_traps_fini,'_cairo_traps_fini',\
_cairo_traps_init,'_cairo_traps_init',\
_cairo_traps_init_boxes,'_cairo_traps_init_boxes',\
_cairo_traps_init_with_clip,'_cairo_traps_init_with_clip',\
_cairo_traps_limit,'_cairo_traps_limit',\
_cairo_traps_path,'_cairo_traps_path',\
_cairo_traps_tessellate_convex_quad,'_cairo_traps_tessellate_convex_quad',\
_cairo_traps_tessellate_rectangle,'_cairo_traps_tessellate_rectangle',\
_cairo_traps_tessellate_triangle,'_cairo_traps_tessellate_triangle',\
_cairo_traps_to_boxes,'_cairo_traps_to_boxes',\
_cairo_traps_translate,'_cairo_traps_translate',\
_cairo_tristrip_add_point,'_cairo_tristrip_add_point',\
_cairo_tristrip_extents,'_cairo_tristrip_extents',\
_cairo_tristrip_fini,'_cairo_tristrip_fini',\
_cairo_tristrip_init,'_cairo_tristrip_init',\
_cairo_tristrip_init_with_clip,'_cairo_tristrip_init_with_clip',\
_cairo_tristrip_limit,'_cairo_tristrip_limit',\
_cairo_tristrip_move_to,'_cairo_tristrip_move_to',\
_cairo_tristrip_translate,'_cairo_tristrip_translate',\
_cairo_truetype_get_style,'_cairo_truetype_get_style',\
_cairo_truetype_index_to_ucs4,'_cairo_truetype_index_to_ucs4',\
_cairo_truetype_read_font_name,'_cairo_truetype_read_font_name',\
_cairo_truetype_subset_fini,'_cairo_truetype_subset_fini',\
_cairo_truetype_subset_init_pdf,'_cairo_truetype_subset_init_pdf',\
_cairo_truetype_subset_init_ps,'_cairo_truetype_subset_init_ps',\
_cairo_twin_charmap,'_cairo_twin_charmap',\
_cairo_twin_outlines,'_cairo_twin_outlines',\
_cairo_type1_fallback_fini,'_cairo_type1_fallback_fini',\
_cairo_type1_fallback_init_binary,'_cairo_type1_fallback_init_binary',\
_cairo_type1_fallback_init_hex,'_cairo_type1_fallback_init_hex',\
_cairo_type1_scaled_font_is_type1,'_cairo_type1_scaled_font_is_type1',\
_cairo_type1_subset_fini,'_cairo_type1_subset_fini',\
_cairo_type1_subset_init,'_cairo_type1_subset_init',\
_cairo_type2_charstrings_fini,'_cairo_type2_charstrings_fini',\
_cairo_type2_charstrings_init,'_cairo_type2_charstrings_init',\
_cairo_type3_glyph_surface_analyze_glyph,'_cairo_type3_glyph_surface_analyze_glyph',\
_cairo_type3_glyph_surface_create,'_cairo_type3_glyph_surface_create',\
_cairo_type3_glyph_surface_emit_glyph,'_cairo_type3_glyph_surface_emit_glyph',\
_cairo_type3_glyph_surface_set_font_subsets_callback,'_cairo_type3_glyph_surface_set_font_subsets_callback',\
_cairo_ucs4_to_utf8,'_cairo_ucs4_to_utf8',\
_cairo_uint128_add,'_cairo_uint128_add',\
_cairo_uint128_cmp,'_cairo_uint128_cmp',\
_cairo_uint128_divrem,'_cairo_uint128_divrem',\
_cairo_uint128_eq,'_cairo_uint128_eq',\
_cairo_uint128_lsl,'_cairo_uint128_lsl',\
_cairo_uint128_lt,'_cairo_uint128_lt',\
_cairo_uint128_mul,'_cairo_uint128_mul',\
_cairo_uint128_negate,'_cairo_uint128_negate',\
_cairo_uint128_not,'_cairo_uint128_not',\
_cairo_uint128_rsa,'_cairo_uint128_rsa',\
_cairo_uint128_rsl,'_cairo_uint128_rsl',\
_cairo_uint128_sub,'_cairo_uint128_sub',\
_cairo_uint32_to_uint128,'_cairo_uint32_to_uint128',\
_cairo_uint64_to_uint128,'_cairo_uint64_to_uint128',\
_cairo_uint64x64_128_mul,'_cairo_uint64x64_128_mul',\
_cairo_uint_96by64_32x64_divrem,'_cairo_uint_96by64_32x64_divrem',\
_cairo_unbounded_rectangle,'_cairo_unbounded_rectangle',\
_cairo_unicode_to_winansi,'_cairo_unicode_to_winansi',\
_cairo_unscaled_font_destroy,'_cairo_unscaled_font_destroy',\
_cairo_unscaled_font_init,'_cairo_unscaled_font_init',\
_cairo_unscaled_font_reference,'_cairo_unscaled_font_reference',\
_cairo_user_data_array_copy,'_cairo_user_data_array_copy',\
_cairo_user_data_array_fini,'_cairo_user_data_array_fini',\
_cairo_user_data_array_foreach,'_cairo_user_data_array_foreach',\
_cairo_user_data_array_get_data,'_cairo_user_data_array_get_data',\
_cairo_user_data_array_init,'_cairo_user_data_array_init',\
_cairo_user_data_array_set_data,'_cairo_user_data_array_set_data',\
_cairo_user_font_face_backend,'_cairo_user_font_face_backend',\
_cairo_utf8_get_char_validated,'_cairo_utf8_get_char_validated',\
_cairo_utf8_to_ucs4,'_cairo_utf8_to_ucs4',\
_cairo_utf8_to_utf16,'_cairo_utf8_to_utf16',\
_cairo_validate_text_clusters,'_cairo_validate_text_clusters',\
_cairo_winansi_to_glyphname,'_cairo_winansi_to_glyphname',\
_do_cairo_gstate_backend_to_user,'_do_cairo_gstate_backend_to_user',\
_do_cairo_gstate_backend_to_user_distance,'_do_cairo_gstate_backend_to_user_distance',\
_do_cairo_gstate_user_to_backend,'_do_cairo_gstate_user_to_backend',\
_do_cairo_gstate_user_to_backend_distance,'_do_cairo_gstate_user_to_backend_distance',\
_pixman_format_from_masks,'_pixman_format_from_masks',\
_pixman_format_to_masks,'_pixman_format_to_masks',\
_pixman_image_add_traps,'_pixman_image_add_traps',\
_pixman_image_add_tristrip,'_pixman_image_add_tristrip',\
_pixman_image_for_color,'_pixman_image_for_color',\
_pixman_image_for_pattern,'_pixman_image_for_pattern',\
cairo_append_path,'cairo_append_path',\
cairo_arc,'cairo_arc',\
cairo_arc_negative,'cairo_arc_negative',\
cairo_clip,'cairo_clip',\
cairo_clip_extents,'cairo_clip_extents',\
cairo_clip_preserve,'cairo_clip_preserve',\
cairo_close_path,'cairo_close_path',\
cairo_copy_clip_rectangle_list,'cairo_copy_clip_rectangle_list',\
cairo_copy_page,'cairo_copy_page',\
cairo_copy_path,'cairo_copy_path',\
cairo_copy_path_flat,'cairo_copy_path_flat',\
cairo_create,'cairo_create',\
cairo_curve_to,'cairo_curve_to',\
cairo_debug_reset_static_data,'cairo_debug_reset_static_data',\
cairo_destroy,'cairo_destroy',\
cairo_device_acquire,'cairo_device_acquire',\
cairo_device_destroy,'cairo_device_destroy',\
cairo_device_finish,'cairo_device_finish',\
cairo_device_flush,'cairo_device_flush',\
cairo_device_get_reference_count,'cairo_device_get_reference_count',\
cairo_device_get_type,'cairo_device_get_type',\
cairo_device_get_user_data,'cairo_device_get_user_data',\
cairo_device_reference,'cairo_device_reference',\
cairo_device_release,'cairo_device_release',\
cairo_device_set_user_data,'cairo_device_set_user_data',\
cairo_device_status,'cairo_device_status',\
cairo_device_to_user,'cairo_device_to_user',\
cairo_device_to_user_distance,'cairo_device_to_user_distance',\
cairo_fill,'cairo_fill',\
cairo_fill_extents,'cairo_fill_extents',\
cairo_fill_preserve,'cairo_fill_preserve',\
cairo_font_extents,'cairo_font_extents',\
cairo_font_face_destroy,'cairo_font_face_destroy',\
cairo_font_face_get_reference_count,'cairo_font_face_get_reference_count',\
cairo_font_face_get_type,'cairo_font_face_get_type',\
cairo_font_face_get_user_data,'cairo_font_face_get_user_data',\
cairo_font_face_reference,'cairo_font_face_reference',\
cairo_font_face_set_user_data,'cairo_font_face_set_user_data',\
cairo_font_face_status,'cairo_font_face_status',\
cairo_font_options_copy,'cairo_font_options_copy',\
cairo_font_options_create,'cairo_font_options_create',\
cairo_font_options_destroy,'cairo_font_options_destroy',\
cairo_font_options_equal,'cairo_font_options_equal',\
cairo_font_options_get_antialias,'cairo_font_options_get_antialias',\
cairo_font_options_get_hint_metrics,'cairo_font_options_get_hint_metrics',\
cairo_font_options_get_hint_style,'cairo_font_options_get_hint_style',\
cairo_font_options_get_subpixel_order,'cairo_font_options_get_subpixel_order',\
cairo_font_options_hash,'cairo_font_options_hash',\
cairo_font_options_merge,'cairo_font_options_merge',\
cairo_font_options_set_antialias,'cairo_font_options_set_antialias',\
cairo_font_options_set_hint_metrics,'cairo_font_options_set_hint_metrics',\
cairo_font_options_set_hint_style,'cairo_font_options_set_hint_style',\
cairo_font_options_set_subpixel_order,'cairo_font_options_set_subpixel_order',\
cairo_font_options_status,'cairo_font_options_status',\
cairo_format_stride_for_width,'cairo_format_stride_for_width',\
cairo_ft_font_face_create_for_ft_face,'cairo_ft_font_face_create_for_ft_face',\
cairo_ft_font_face_get_synthesize,'cairo_ft_font_face_get_synthesize',\
cairo_ft_font_face_set_synthesize,'cairo_ft_font_face_set_synthesize',\
cairo_ft_font_face_unset_synthesize,'cairo_ft_font_face_unset_synthesize',\
cairo_ft_scaled_font_lock_face,'cairo_ft_scaled_font_lock_face',\
cairo_ft_scaled_font_unlock_face,'cairo_ft_scaled_font_unlock_face',\
cairo_get_antialias,'cairo_get_antialias',\
cairo_get_current_point,'cairo_get_current_point',\
cairo_get_dash,'cairo_get_dash',\
cairo_get_dash_count,'cairo_get_dash_count',\
cairo_get_fill_rule,'cairo_get_fill_rule',\
cairo_get_font_face,'cairo_get_font_face',\
cairo_get_font_matrix,'cairo_get_font_matrix',\
cairo_get_font_options,'cairo_get_font_options',\
cairo_get_group_target,'cairo_get_group_target',\
cairo_get_line_cap,'cairo_get_line_cap',\
cairo_get_line_join,'cairo_get_line_join',\
cairo_get_line_width,'cairo_get_line_width',\
cairo_get_matrix,'cairo_get_matrix',\
cairo_get_miter_limit,'cairo_get_miter_limit',\
cairo_get_operator,'cairo_get_operator',\
cairo_get_reference_count,'cairo_get_reference_count',\
cairo_get_scaled_font,'cairo_get_scaled_font',\
cairo_get_source,'cairo_get_source',\
cairo_get_target,'cairo_get_target',\
cairo_get_tolerance,'cairo_get_tolerance',\
cairo_get_user_data,'cairo_get_user_data',\
cairo_glyph_allocate,'cairo_glyph_allocate',\
cairo_glyph_extents,'cairo_glyph_extents',\
cairo_glyph_free,'cairo_glyph_free',\
cairo_glyph_path,'cairo_glyph_path',\
cairo_has_current_point,'cairo_has_current_point',\
cairo_identity_matrix,'cairo_identity_matrix',\
cairo_image_surface_create,'cairo_image_surface_create',\
cairo_image_surface_create_for_data,'cairo_image_surface_create_for_data',\
cairo_image_surface_create_from_png,'cairo_image_surface_create_from_png',\
cairo_image_surface_create_from_png_stream,'cairo_image_surface_create_from_png_stream',\
cairo_image_surface_get_data,'cairo_image_surface_get_data',\
cairo_image_surface_get_format,'cairo_image_surface_get_format',\
cairo_image_surface_get_height,'cairo_image_surface_get_height',\
cairo_image_surface_get_stride,'cairo_image_surface_get_stride',\
cairo_image_surface_get_width,'cairo_image_surface_get_width',\
cairo_in_clip,'cairo_in_clip',\
cairo_in_fill,'cairo_in_fill',\
cairo_in_stroke,'cairo_in_stroke',\
cairo_line_to,'cairo_line_to',\
cairo_mask,'cairo_mask',\
cairo_mask_surface,'cairo_mask_surface',\
cairo_matrix_init,'cairo_matrix_init',\
cairo_matrix_init_identity,'cairo_matrix_init_identity',\
cairo_matrix_init_rotate,'cairo_matrix_init_rotate',\
cairo_matrix_init_scale,'cairo_matrix_init_scale',\
cairo_matrix_init_translate,'cairo_matrix_init_translate',\
cairo_matrix_invert,'cairo_matrix_invert',\
cairo_matrix_multiply,'cairo_matrix_multiply',\
cairo_matrix_rotate,'cairo_matrix_rotate',\
cairo_matrix_scale,'cairo_matrix_scale',\
cairo_matrix_transform_distance,'cairo_matrix_transform_distance',\
cairo_matrix_transform_point,'cairo_matrix_transform_point',\
cairo_matrix_translate,'cairo_matrix_translate',\
cairo_mesh_pattern_begin_patch,'cairo_mesh_pattern_begin_patch',\
cairo_mesh_pattern_curve_to,'cairo_mesh_pattern_curve_to',\
cairo_mesh_pattern_end_patch,'cairo_mesh_pattern_end_patch',\
cairo_mesh_pattern_get_control_point,'cairo_mesh_pattern_get_control_point',\
cairo_mesh_pattern_get_corner_color_rgba,'cairo_mesh_pattern_get_corner_color_rgba',\
cairo_mesh_pattern_get_patch_count,'cairo_mesh_pattern_get_patch_count',\
cairo_mesh_pattern_get_path,'cairo_mesh_pattern_get_path',\
cairo_mesh_pattern_line_to,'cairo_mesh_pattern_line_to',\
cairo_mesh_pattern_move_to,'cairo_mesh_pattern_move_to',\
cairo_mesh_pattern_set_control_point,'cairo_mesh_pattern_set_control_point',\
cairo_mesh_pattern_set_corner_color_rgb,'cairo_mesh_pattern_set_corner_color_rgb',\
cairo_mesh_pattern_set_corner_color_rgba,'cairo_mesh_pattern_set_corner_color_rgba',\
cairo_move_to,'cairo_move_to',\
cairo_new_path,'cairo_new_path',\
cairo_new_sub_path,'cairo_new_sub_path',\
cairo_paint,'cairo_paint',\
cairo_paint_with_alpha,'cairo_paint_with_alpha',\
cairo_path_destroy,'cairo_path_destroy',\
cairo_path_extents,'cairo_path_extents',\
cairo_pattern_add_color_stop_rgb,'cairo_pattern_add_color_stop_rgb',\
cairo_pattern_add_color_stop_rgba,'cairo_pattern_add_color_stop_rgba',\
cairo_pattern_create_for_surface,'cairo_pattern_create_for_surface',\
cairo_pattern_create_linear,'cairo_pattern_create_linear',\
cairo_pattern_create_mesh,'cairo_pattern_create_mesh',\
cairo_pattern_create_radial,'cairo_pattern_create_radial',\
cairo_pattern_create_raster_source,'cairo_pattern_create_raster_source',\
cairo_pattern_create_rgb,'cairo_pattern_create_rgb',\
cairo_pattern_create_rgba,'cairo_pattern_create_rgba',\
cairo_pattern_destroy,'cairo_pattern_destroy',\
cairo_pattern_get_color_stop_count,'cairo_pattern_get_color_stop_count',\
cairo_pattern_get_color_stop_rgba,'cairo_pattern_get_color_stop_rgba',\
cairo_pattern_get_extend,'cairo_pattern_get_extend',\
cairo_pattern_get_filter,'cairo_pattern_get_filter',\
cairo_pattern_get_linear_points,'cairo_pattern_get_linear_points',\
cairo_pattern_get_matrix,'cairo_pattern_get_matrix',\
cairo_pattern_get_radial_circles,'cairo_pattern_get_radial_circles',\
cairo_pattern_get_reference_count,'cairo_pattern_get_reference_count',\
cairo_pattern_get_rgba,'cairo_pattern_get_rgba',\
cairo_pattern_get_surface,'cairo_pattern_get_surface',\
cairo_pattern_get_type,'cairo_pattern_get_type',\
cairo_pattern_get_user_data,'cairo_pattern_get_user_data',\
cairo_pattern_reference,'cairo_pattern_reference',\
cairo_pattern_set_extend,'cairo_pattern_set_extend',\
cairo_pattern_set_filter,'cairo_pattern_set_filter',\
cairo_pattern_set_matrix,'cairo_pattern_set_matrix',\
cairo_pattern_set_user_data,'cairo_pattern_set_user_data',\
cairo_pattern_status,'cairo_pattern_status',\
cairo_pop_group,'cairo_pop_group',\
cairo_pop_group_to_source,'cairo_pop_group_to_source',\
cairo_push_group,'cairo_push_group',\
cairo_push_group_with_content,'cairo_push_group_with_content',\
cairo_raster_source_pattern_get_acquire,'cairo_raster_source_pattern_get_acquire',\
cairo_raster_source_pattern_get_callback_data,'cairo_raster_source_pattern_get_callback_data',\
cairo_raster_source_pattern_get_copy,'cairo_raster_source_pattern_get_copy',\
cairo_raster_source_pattern_get_finish,'cairo_raster_source_pattern_get_finish',\
cairo_raster_source_pattern_get_snapshot,'cairo_raster_source_pattern_get_snapshot',\
cairo_raster_source_pattern_set_acquire,'cairo_raster_source_pattern_set_acquire',\
cairo_raster_source_pattern_set_callback_data,'cairo_raster_source_pattern_set_callback_data',\
cairo_raster_source_pattern_set_copy,'cairo_raster_source_pattern_set_copy',\
cairo_raster_source_pattern_set_finish,'cairo_raster_source_pattern_set_finish',\
cairo_raster_source_pattern_set_snapshot,'cairo_raster_source_pattern_set_snapshot',\
cairo_recording_surface_create,'cairo_recording_surface_create',\
cairo_recording_surface_get_extents,'cairo_recording_surface_get_extents',\
cairo_recording_surface_ink_extents,'cairo_recording_surface_ink_extents',\
cairo_rectangle,'cairo_rectangle',\
cairo_rectangle_list_destroy,'cairo_rectangle_list_destroy',\
cairo_reference,'cairo_reference',\
cairo_region_contains_point,'cairo_region_contains_point',\
cairo_region_contains_rectangle,'cairo_region_contains_rectangle',\
cairo_region_copy,'cairo_region_copy',\
cairo_region_create,'cairo_region_create',\
cairo_region_create_rectangle,'cairo_region_create_rectangle',\
cairo_region_create_rectangles,'cairo_region_create_rectangles',\
cairo_region_destroy,'cairo_region_destroy',\
cairo_region_equal,'cairo_region_equal',\
cairo_region_get_extents,'cairo_region_get_extents',\
cairo_region_get_rectangle,'cairo_region_get_rectangle',\
cairo_region_intersect,'cairo_region_intersect',\
cairo_region_intersect_rectangle,'cairo_region_intersect_rectangle',\
cairo_region_is_empty,'cairo_region_is_empty',\
cairo_region_num_rectangles,'cairo_region_num_rectangles',\
cairo_region_reference,'cairo_region_reference',\
cairo_region_status,'cairo_region_status',\
cairo_region_subtract,'cairo_region_subtract',\
cairo_region_subtract_rectangle,'cairo_region_subtract_rectangle',\
cairo_region_translate,'cairo_region_translate',\
cairo_region_union,'cairo_region_union',\
cairo_region_union_rectangle,'cairo_region_union_rectangle',\
cairo_region_xor,'cairo_region_xor',\
cairo_region_xor_rectangle,'cairo_region_xor_rectangle',\
cairo_rel_curve_to,'cairo_rel_curve_to',\
cairo_rel_line_to,'cairo_rel_line_to',\
cairo_rel_move_to,'cairo_rel_move_to',\
cairo_reset_clip,'cairo_reset_clip',\
cairo_restore,'cairo_restore',\
cairo_rotate,'cairo_rotate',\
cairo_save,'cairo_save',\
cairo_scale,'cairo_scale',\
cairo_scaled_font_create,'cairo_scaled_font_create',\
cairo_scaled_font_destroy,'cairo_scaled_font_destroy',\
cairo_scaled_font_extents,'cairo_scaled_font_extents',\
cairo_scaled_font_get_ctm,'cairo_scaled_font_get_ctm',\
cairo_scaled_font_get_font_face,'cairo_scaled_font_get_font_face',\
cairo_scaled_font_get_font_matrix,'cairo_scaled_font_get_font_matrix',\
cairo_scaled_font_get_font_options,'cairo_scaled_font_get_font_options',\
cairo_scaled_font_get_reference_count,'cairo_scaled_font_get_reference_count',\
cairo_scaled_font_get_scale_matrix,'cairo_scaled_font_get_scale_matrix',\
cairo_scaled_font_get_type,'cairo_scaled_font_get_type',\
cairo_scaled_font_get_user_data,'cairo_scaled_font_get_user_data',\
cairo_scaled_font_glyph_extents,'cairo_scaled_font_glyph_extents',\
cairo_scaled_font_reference,'cairo_scaled_font_reference',\
cairo_scaled_font_set_user_data,'cairo_scaled_font_set_user_data',\
cairo_scaled_font_status,'cairo_scaled_font_status',\
cairo_scaled_font_text_extents,'cairo_scaled_font_text_extents',\
cairo_scaled_font_text_to_glyphs,'cairo_scaled_font_text_to_glyphs',\
cairo_script_create,'cairo_script_create',\
cairo_script_create_for_stream,'cairo_script_create_for_stream',\
cairo_script_from_recording_surface,'cairo_script_from_recording_surface',\
cairo_script_get_mode,'cairo_script_get_mode',\
cairo_script_set_mode,'cairo_script_set_mode',\
cairo_script_surface_create,'cairo_script_surface_create',\
cairo_script_surface_create_for_target,'cairo_script_surface_create_for_target',\
cairo_script_write_comment,'cairo_script_write_comment',\
cairo_select_font_face,'cairo_select_font_face',\
cairo_set_antialias,'cairo_set_antialias',\
cairo_set_dash,'cairo_set_dash',\
cairo_set_fill_rule,'cairo_set_fill_rule',\
cairo_set_font_face,'cairo_set_font_face',\
cairo_set_font_matrix,'cairo_set_font_matrix',\
cairo_set_font_options,'cairo_set_font_options',\
cairo_set_font_size,'cairo_set_font_size',\
cairo_set_line_cap,'cairo_set_line_cap',\
cairo_set_line_join,'cairo_set_line_join',\
cairo_set_line_width,'cairo_set_line_width',\
cairo_set_matrix,'cairo_set_matrix',\
cairo_set_miter_limit,'cairo_set_miter_limit',\
cairo_set_operator,'cairo_set_operator',\
cairo_set_scaled_font,'cairo_set_scaled_font',\
cairo_set_source,'cairo_set_source',\
cairo_set_source_rgb,'cairo_set_source_rgb',\
cairo_set_source_rgba,'cairo_set_source_rgba',\
cairo_set_source_surface,'cairo_set_source_surface',\
cairo_set_tolerance,'cairo_set_tolerance',\
cairo_set_user_data,'cairo_set_user_data',\
cairo_show_glyphs,'cairo_show_glyphs',\
cairo_show_page,'cairo_show_page',\
cairo_show_text,'cairo_show_text',\
cairo_show_text_glyphs,'cairo_show_text_glyphs',\
cairo_status,'cairo_status',\
cairo_status_to_string,'cairo_status_to_string',\
cairo_stroke,'cairo_stroke',\
cairo_stroke_extents,'cairo_stroke_extents',\
cairo_stroke_preserve,'cairo_stroke_preserve',\
cairo_surface_copy_page,'cairo_surface_copy_page',\
cairo_surface_create_for_rectangle,'cairo_surface_create_for_rectangle',\
cairo_surface_create_similar,'cairo_surface_create_similar',\
cairo_surface_create_similar_image,'cairo_surface_create_similar_image',\
cairo_surface_destroy,'cairo_surface_destroy',\
cairo_surface_finish,'cairo_surface_finish',\
cairo_surface_flush,'cairo_surface_flush',\
cairo_surface_get_content,'cairo_surface_get_content',\
cairo_surface_get_device,'cairo_surface_get_device',\
cairo_surface_get_device_offset,'cairo_surface_get_device_offset',\
cairo_surface_get_fallback_resolution,'cairo_surface_get_fallback_resolution',\
cairo_surface_get_font_options,'cairo_surface_get_font_options',\
cairo_surface_get_mime_data,'cairo_surface_get_mime_data',\
cairo_surface_get_reference_count,'cairo_surface_get_reference_count',\
cairo_surface_get_type,'cairo_surface_get_type',\
cairo_surface_get_user_data,'cairo_surface_get_user_data',\
cairo_surface_has_show_text_glyphs,'cairo_surface_has_show_text_glyphs',\
cairo_surface_map_to_image,'cairo_surface_map_to_image',\
cairo_surface_mark_dirty,'cairo_surface_mark_dirty',\
cairo_surface_mark_dirty_rectangle,'cairo_surface_mark_dirty_rectangle',\
cairo_surface_reference,'cairo_surface_reference',\
cairo_surface_set_device_offset,'cairo_surface_set_device_offset',\
cairo_surface_set_fallback_resolution,'cairo_surface_set_fallback_resolution',\
cairo_surface_set_mime_data,'cairo_surface_set_mime_data',\
cairo_surface_set_user_data,'cairo_surface_set_user_data',\
cairo_surface_show_page,'cairo_surface_show_page',\
cairo_surface_status,'cairo_surface_status',\
cairo_surface_supports_mime_type,'cairo_surface_supports_mime_type',\
cairo_surface_unmap_image,'cairo_surface_unmap_image',\
cairo_surface_write_to_png,'cairo_surface_write_to_png',\
cairo_surface_write_to_png_stream,'cairo_surface_write_to_png_stream',\
cairo_svg_get_versions,'cairo_svg_get_versions',\
cairo_svg_surface_create,'cairo_svg_surface_create',\
cairo_svg_surface_create_for_stream,'cairo_svg_surface_create_for_stream',\
cairo_svg_surface_restrict_to_version,'cairo_svg_surface_restrict_to_version',\
cairo_svg_version_to_string,'cairo_svg_version_to_string',\
cairo_text_cluster_allocate,'cairo_text_cluster_allocate',\
cairo_text_cluster_free,'cairo_text_cluster_free',\
cairo_text_extents,'cairo_text_extents',\
cairo_text_path,'cairo_text_path',\
cairo_toy_font_face_create,'cairo_toy_font_face_create',\
cairo_toy_font_face_get_family,'cairo_toy_font_face_get_family',\
cairo_toy_font_face_get_slant,'cairo_toy_font_face_get_slant',\
cairo_toy_font_face_get_weight,'cairo_toy_font_face_get_weight',\
cairo_transform,'cairo_transform',\
cairo_translate,'cairo_translate',\
cairo_user_font_face_create,'cairo_user_font_face_create',\
cairo_user_font_face_get_init_func,'cairo_user_font_face_get_init_func',\
cairo_user_font_face_get_render_glyph_func,'cairo_user_font_face_get_render_glyph_func',\
cairo_user_font_face_get_text_to_glyphs_func,'cairo_user_font_face_get_text_to_glyphs_func',\
cairo_user_font_face_get_unicode_to_glyph_func,'cairo_user_font_face_get_unicode_to_glyph_func',\
cairo_user_font_face_set_init_func,'cairo_user_font_face_set_init_func',\
cairo_user_font_face_set_render_glyph_func,'cairo_user_font_face_set_render_glyph_func',\
cairo_user_font_face_set_text_to_glyphs_func,'cairo_user_font_face_set_text_to_glyphs_func',\
cairo_user_font_face_set_unicode_to_glyph_func,'cairo_user_font_face_set_unicode_to_glyph_func',\
cairo_user_to_device,'cairo_user_to_device',\
cairo_user_to_device_distance,'cairo_user_to_device_distance',\
cairo_version,'cairo_version',\
cairo_version_string,'cairo_version_string',\

/contrib/sdk/sources/ffmpeg/config.mak
16,10 → 16,10
endif
CC_IDENT=gcc 4.8.1 (GCC)
ARCH=x86
CC = kos32-gcc
CXX= kos32-g++
AS = kos32-gcc
LD = kos32-ld
CC=gcc
CXX=g++
AS=gcc
LD=ld
DEPCC=gcc
DEPCCFLAGS= $(CPPFLAGS)
DEPAS=gcc
26,15 → 26,15
DEPASFLAGS= $(CPPFLAGS)
YASM=nasm
DEPYASM=nasm
AR=kos32-ar
AR=ar
ARFLAGS=rc
AR_O=$@
RANLIB=:
STRIP=kos32-strip
STRIP=strip
CP=cp -p
LN_S=ln -s -f
CPPFLAGS= -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=32 -D_LARGEFILE_SOURCE -U__STRICT_ANSI__
CFLAGS= -I../newlib/include -I../zlib -U_Win32 -U_WIN32 -U__MINGW32__ -std=c99 -fomit-frame-pointer -Wdeclaration-after-statement -Wall -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -O2 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla
CFLAGS= -I../newlib/include -U_Win32 -U_WIN32 -U__MINGW32__ -std=c99 -fomit-frame-pointer -Wdeclaration-after-statement -Wall -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -O2 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla
CXXFLAGS= -D__STDC_CONSTANT_MACROS
ASFLAGS= -I../newlib/include -U_Win32 -U_WIN32 -U__MINGW32__
AS_C=-c
48,9 → 48,9
LD_LIB=-l%
LD_PATH=-L
DLLTOOL=dlltool
LDFLAGS=-L../../lib -L/home/autobuild/tools/win32/mingw32/lib --output-def $$(@:$(SLIBSUF)=.orig.def) -nostdlib --enable-runtime-pseudo-reloc
LDFLAGS=-L../../lib --output-def $$(@:$(SLIBSUF)=.orig.def) -nostdlib --enable-runtime-pseudo-reloc
LDFLAGS-ffserver=-Wl,-E
SHFLAGS=-shared -s -T../newlib/dll.lds -Bsymbolic --entry _DllStartup --image-base 0 --out-implib $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) --version-script $(SUBDIR)lib$(NAME).ver -ldll
SHFLAGS=-shared -s -T../newlib/dll.lds -Map map -Bsymbolic --entry _DllStartup --image-base 0 --out-implib $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) --version-script $(SUBDIR)lib$(NAME).ver -ldll
YASMFLAGS=-f win32 -DPREFIX
BUILDSUF=
PROGSSUF=

/contrib/sdk/sources/ffmpeg/doc/APIchanges
0,0 → 1,1753
Never assume the API of libav* to be stable unless at least 1 month has passed
since the last major version increase or the API was added.
The last version increases were:
libavcodec: 2013-03-xx
libavdevice: 2013-03-xx
libavfilter: 2012-06-22
libavformat: 2013-03-xx
libavresample: 2012-10-05
libpostproc: 2011-04-18
libswresample: 2011-09-19
libswscale: 2011-06-20
libavutil: 2012-10-22
API changes, most recent first:
2013-10-27 - xxxxxxx - lavc 55.39.100 - avcodec.h
Add CODEC_CAP_DELAY support to avcodec_decode_subtitle2.
2013-10-27 - xxxxxxx - lavu 52.48.100 - parseutils.h
Add av_get_known_color_name().
2013-10-17 - xxxxxxx - lavu 52.47.100 - opt.h
Add AV_OPT_TYPE_CHANNEL_LAYOUT and channel layout option handlers
av_opt_get_channel_layout() and av_opt_set_channel_layout().
2013-10-xx - xxxxxxx -libswscale 2.5.101 - options.c
Change default scaler to bicubic
2013-10-03 - xxxxxxx - lavc 55.34.100 - avcodec.h
Add av_codec_get_max_lowres()
2013-10-02 - xxxxxxx - lavf 55.19.100 - avformat.h
Add audio/video/subtitle AVCodec fields to AVFormatContext to force specific
decoders
2013-08-xx - xxxxxxx - lavfi 3.11.0 - avfilter.h
Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
implementations.
2013-09-21 - xxxxxxx - lavu 52.16.0 - pixfmt.h
Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
AV_PIX_FMT_NV20.
2013-09-16 - c74c3fb / 3feb3d6 - lavu 52.44.100 / 52.15.0 - mem.h
Add av_reallocp.
2013-09-04 - 3e1f507 - lavc 55.31.101 - avcodec.h
avcodec_close() argument can be NULL.
2013-09-04 - 36cd017 - lavf 55.16.101 - avformat.h
avformat_close_input() argument can be NULL and point on NULL.
2013-08-29 - e31db62 - lavf 55.15.100 - avformat.h
Add av_format_get_probe_score().
2013-08-15 - 1e0e193 - lsws 2.5.100 -
Add a sws_dither AVOption, allowing to set the dither algorithm used
2013-08-xx - xxxxxxx - lavc 55.27.100 - vdpau.h
Add a render2 alternative to the render callback function.
2013-08-xx - xxxxxxx - lavc 55.26.100 - vdpau.h
Add allocation function for AVVDPAUContext, allowing
to extend it in the future without breaking ABI/API.
2013-08-10 - 67a580f / 5a9a9d4 - lavc 55.25.100 / 55.16.0 - avcodec.h
Extend AVPacket API with av_packet_unref, av_packet_ref,
av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
2013-08-05 - 9547e3e / f824535 - lavc 55.22.100 / 55.13.0 - avcodec.h
Deprecate the bitstream-related members from struct AVVDPAUContext.
The bistream buffers no longer need to be explicitly freed.
2013-08-05 - 3b805dc / 549294f - lavc 55.21.100 / 55.12.0 - avcodec.h
Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
and select the AV_PIX_FMT_VDPAU format with get_format() instead.
2013-08-05 - 4ee0984 / a0ad5d0 - lavu 52.41.100 / 52.14.0 - pixfmt.h
Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
2013-08-02 - 82fdfe8 / a8b1927 - lavc 55.20.100 / 55.11.0 - avcodec.h
Add output_picture_number to AVCodecParserContext.
2013-07-23 - abc8110 - lavc 55.19.100 - avcodec.h
Add avcodec_chroma_pos_to_enum()
Add avcodec_enum_to_chroma_pos()
2013-07-03 - 838bd73 - lavfi 3.78.100 - avfilter.h
Deprecate avfilter_graph_parse() in favor of the equivalent
avfilter_graph_parse_ptr().
2013-06-24 - af5f9c0 / 95d5246 - lavc 55.17.100 / 55.10.0 - avcodec.h
Add MPEG-2 AAC profiles
2013-06-25 - af5f9c0 / 95d5246 - lavf 55.10.100 - avformat.h
Add AV_DISPOSITION_* flags to indicate text track kind.
2013-06-15 - 99b8cd0 - lavu 52.36.100
Add AVRIPEMD:
av_ripemd_alloc()
av_ripemd_init()
av_ripemd_update()
av_ripemd_final()
2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h
Add av_realloc_array and av_reallocp_array
2013-05-30 - 682b227 - lavu 52.35.100
Add AVSHA512:
av_sha512_alloc()
av_sha512_init()
av_sha512_update()
av_sha512_final()
2013-05-24 - 8d4e969 / 129bb23 - lavfi 3.10.0 / 3.70.100 - avfilter.h
Add support for slice multithreading to lavfi. Filters supporting threading
are marked with AVFILTER_FLAG_SLICE_THREADS.
New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
used to configure multithreading.
2013-05-24 - fe40a9f / 2a6eaea - lavu 52.12.0 / 52.34.100 - cpu.h
Add av_cpu_count() function for getting the number of logical CPUs.
2013-05-24 - 0c25c39 / b493847 - lavc 55.7.0 / 55.12.100 - avcodec.h
Add picture_structure to AVCodecParserContext.
2013-05-17 - 3a751ea - lavu 52.33.100 - opt.h
Add AV_OPT_TYPE_COLOR value to AVOptionType enum.
2013-05-13 - e398416 - lavu 52.31.100 - mem.h
Add av_dynarray2_add().
2013-05-12 - 1776177 - lavfi 3.65.100
Add AVFILTER_FLAG_SUPPORT_TIMELINE* filter flags.
2013-04-19 - 380cfce - lavc 55.4.100
Add AV_CODEC_PROP_TEXT_SUB property for text based subtitles codec.
2013-04-18 - 7c1a002 - lavf 55.3.100
The matroska demuxer can now output proper verbatim ASS packets. It will
become the default starting lavf 56.0.100.
2013-04-10 - af0d270 - lavu 25.26.100 - avutil.h,opt.h
Add av_int_list_length()
and av_opt_set_int_list().
2013-03-30 - 5c73645 - lavu 52.24.100 - samplefmt.h
Add av_samples_alloc_array_and_samples().
2013-03-29 - ef7b6b4 - lavf 55.1.100 - avformat.h
Add av_guess_frame_rate()
2013-03-20 - 8d928a9 - lavu 52.22.100 - opt.h
Add AV_OPT_TYPE_DURATION value to AVOptionType enum.
2013-03-17 - 7aa9af5 - lavu 52.20.100 - opt.h
Add AV_OPT_TYPE_VIDEO_RATE value to AVOptionType enum.
2013-03-07 - 9767ec6 - lavu 52.18.100 - avstring.h,bprint.h
Add av_escape() and av_bprint_escape() API.
2013-02-24 - b59cd08 - lavfi 3.41.100 - buffersink.h
Add sample_rates field to AVABufferSinkParams.
2013-01-17 - a1a707f - lavf 54.61.100
Add av_codec_get_tag2().
2013-01-01 - 2eb2e17 - lavfi 3.34.100
Add avfilter_get_audio_buffer_ref_from_arrays_channels.
2012-12-20 - 34de47aa - lavfi 3.29.100 - avfilter.h
Add AVFilterLink.channels, avfilter_link_get_channels()
and avfilter_ref_get_channels().
2012-12-15 - 96d815fc - lavc 54.80.100 - avcodec.h
Add pkt_size field to AVFrame.
2012-11-25 - c70ec631 - lavu 52.9.100 - opt.h
Add the following convenience functions to opt.h:
av_opt_get_image_size
av_opt_get_pixel_fmt
av_opt_get_sample_fmt
av_opt_set_image_size
av_opt_set_pixel_fmt
av_opt_set_sample_fmt
2012-11-17 - 4cd74c81 - lavu 52.8.100 - bprint.h
Add av_bprint_strftime().
2012-11-15 - 92648107 - lavu 52.7.100 - opt.h
Add av_opt_get_key_value().
2012-11-13 - 79456652 - lavfi 3.23.100 - avfilter.h
Add channels field to AVFilterBufferRefAudioProps.
2012-11-03 - 481fdeee - lavu 52.3.100 - opt.h
Add AV_OPT_TYPE_SAMPLE_FMT value to AVOptionType enum.
2012-10-21 - 6fb2fd8 - lavc 54.68.100 - avcodec.h
lavfi 3.20.100 - avfilter.h
Add AV_PKT_DATA_STRINGS_METADATA side data type, used to transmit key/value
strings between AVPacket and AVFrame, and add metadata field to
AVCodecContext (which shall not be accessed by users; see AVFrame metadata
instead).
2012-09-27 - a70b493 - lavd 54.3.100 - version.h
Add LIBAVDEVICE_IDENT symbol.
2012-09-27 - a70b493 - lavfi 3.18.100 - version.h
Add LIBAVFILTER_IDENT symbol.
2012-09-27 - a70b493 - libswr 0.16.100 - version.h
Add LIBSWRESAMPLE_VERSION, LIBSWRESAMPLE_BUILD
and LIBSWRESAMPLE_IDENT symbols.
2012-09-06 - 29e972f - lavu 51.72.100 - parseutils.h
Add av_small_strptime() time parsing function.
Can be used as a stripped-down replacement for strptime(), on
systems which do not support it.
2012-08-25 - 2626cc4 - lavf 54.28.100
Matroska demuxer now identifies SRT subtitles as AV_CODEC_ID_SUBRIP instead
of AV_CODEC_ID_TEXT.
2012-08-13 - 5c0d8bc - lavfi 3.8.100 - avfilter.h
Add avfilter_get_class() function, and priv_class field to AVFilter
struct.
2012-08-12 - a25346e - lavu 51.69.100 - opt.h
Add AV_OPT_FLAG_FILTERING_PARAM symbol in opt.h.
2012-07-31 - 23fc4dd - lavc 54.46.100
Add channels field to AVFrame.
2012-07-30 - f893904 - lavu 51.66.100
Add av_get_channel_description()
and av_get_standard_channel_layout() functions.
2012-07-21 - 016a472 - lavc 54.43.100
Add decode_error_flags field to AVFrame.
2012-07-20 - b062936 - lavf 54.18.100
Add avformat_match_stream_specifier() function.
2012-07-14 - f49ec1b - lavc 54.38.100 - avcodec.h
Add metadata to AVFrame, and the accessor functions
av_frame_get_metadata() and av_frame_set_metadata().
2012-07-10 - 0e003d8 - lavc 54.33.100
Add av_fast_padded_mallocz().
2012-07-10 - 21d5609 - lavfi 3.2.0 - avfilter.h
Add init_opaque() callback to AVFilter struct.
2012-06-26 - e6674e4 - lavu 51.63.100 - imgutils.h
Add functions to libavutil/imgutils.h:
av_image_get_buffer_size()
av_image_fill_arrays()
av_image_copy_to_buffer()
2012-06-24 - c41899a - lavu 51.62.100 - version.h
version moved from avutil.h to version.h
2012-04-11 - 359abb1 - lavu 51.58.100 - error.h
Add av_make_error_string() and av_err2str() utilities to
libavutil/error.h.
2012-06-05 - 62b39d4 - lavc 54.24.100
Add pkt_duration field to AVFrame.
2012-05-24 - f2ee065 - lavu 51.54.100
Move AVPALETTE_SIZE and AVPALETTE_COUNT macros from
libavcodec/avcodec.h to libavutil/pixfmt.h.
2012-05-14 - 94a9ac1 - lavf 54.5.100
Add av_guess_sample_aspect_ratio() function.
2012-04-20 - 65fa7bc - lavfi 2.70.100
Add avfilter_unref_bufferp() to avfilter.h.
2012-04-13 - 162e400 - lavfi 2.68.100
Install libavfilter/asrc_abuffer.h public header.
2012-03-26 - a67d9cf - lavfi 2.66.100
Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
2013-05-15 - ff46809 / e6c4ac7 - lavu 52.32.100 / 52.11.0 - pixdesc.h
Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
2013-04-03 - 6fc58a8 / 507b1e4 - lavc 55.7.100 / 55.4.0 - avcodec.h
Add field_order to AVCodecParserContext.
2013-04-19 - f4b05cd / 5e83d9a - lavc 55.5.100 / 55.2.0 - avcodec.h
Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
2013-04-11 - lavfi 3.53.100 / 3.8.0
231fd44 / 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
avfilterhraph.h, user applications should include just avfilter.h
86070b8 / bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
avfilter_graph_add_filter().
4fde705 / 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
filter.
710b0aa / 48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
46de9ba / 1ba95a9 - Add avfilter_init_dict().
16fc24b / 7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
f4db6bf / 7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
835cc0f / fa2a34c - Add avfilter_next(), deprecate av_filter_next().
Deprecate avfilter_uninit().
2013-04-09 - lavfi 3.51.100 / 3.7.0 - avfilter.h
0594ef0 / b439c99 - Add AVFilter.priv_class for exporting filter options through the
AVOptions API in the similar way private options work in lavc and lavf.
44d4488 / 8114c10 - Add avfilter_get_class().
Switch all filters to use AVOptions.
2013-03-19 - 17ebef2 / 2c328a9 - lavu 52.20.100 / 52.9.0 - pixdesc.h
Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
2013-03-16 - ecade98 / 42c7c61 - lavfi 3.47.100 / 3.6.0
Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.100 / 55.0.0, lavf 55.0.100 / 55.0.0,
lavd 54.4.100 / 54.0.0, lavfi 3.5.0
36099df / 8e401db, 532f31a / 1cec062 - add a new API for reference counted buffers and buffer
pools (new header libavutil/buffer.h).
2653e12 / 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
Add av_packet_from_data() function for constructing packets from
av_malloc()ed data.
c4e8821 / 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
AVFrame.buf/extended_buf to allow reference counting for the AVFrame
data. Add new API for working with reference-counted AVFrames.
80e9e63 / 759001c - add the refcounted_frames field to AVCodecContext to make audio and
video decoders return reference-counted frames. Add get_buffer2()
callback to AVCodecContext which allocates reference-counted frames.
Add avcodec_default_get_buffer2() as the default get_buffer2()
implementation.
Deprecate AVCodecContext.get_buffer() / release_buffer() /
reget_buffer(), avcodec_default_get_buffer(),
avcodec_default_reget_buffer(), avcodec_default_release_buffer().
Remove avcodec_default_free_buffers(), which should not have ever
been called from outside of lavc.
Deprecate the following AVFrame fields:
* base -- is now stored in AVBufferRef
* reference, type, buffer_hints -- are unnecessary in the new API
* hwaccel_picture_private, owner, thread_opaque -- should not
have been acessed from outside of lavc
* qscale_table, qstride, qscale_type, mbskip_table, motion_val,
mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
which are not exported anymore.
a05a44e / 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
Add av_buffersink_get_frame() and av_buffersink_get_samples(),
deprecate av_buffersink_read() and av_buffersink_read_samples().
Deprecate AVFilterBufferRef and all functions for working with it.
2013-03-17 - 6c17ff8 / 12c5c1d - lavu 52.19.100 / 52.8.0 - avstring.h
Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
2013-02-23 - 71cf094 / 9f12235 - lavfi 3.40.100 / 3.4.0 - avfiltergraph.h
Add resample_lavr_opts to AVFilterGraph for setting libavresample options
for auto-inserted resample filters.
2013-01-25 - e7e14bc / 38c1466 - lavu 52.17.100 / 52.7.0 - dict.h
Add av_dict_parse_string() to set multiple key/value pairs at once from a
string.
2013-01-25 - 25be630 / b85a5e8 - lavu 52.16.100 / 52.6.0 - avstring.h
Add av_strnstr()
2013-01-15 - e7e0186 / 8ee288d - lavu 52.15.100 / 52.5.0 - hmac.h
Add AVHMAC.
2013-01-13 - 8ee7b38 / 44e065d - lavc 54.87.100 / 54.36.0 - vdpau.h
Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
2013-01-12 - dae382b / 169fb94 - lavu 52.14.100 / 52.4.0 - pixdesc.h
Add AV_PIX_FMT_VDPAU flag.
2013-01-07 - 249fca3 / 074a00d - lavr 1.1.0
Add avresample_set_channel_mapping() for input channel reordering,
duplication, and silencing.
2012-12-29 - 2ce43b3 / d8fd06c - lavu 52.13.100 / 52.3.0 - avstring.h
Add av_basename() and av_dirname().
2012-11-11 - 03b0787 / 5980f5d - lavu 52.6.100 / 52.2.0 - audioconvert.h
Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
2012-11-05 - 7d26be6 / dfde8a3 - lavu 52.5.100 / 52.1.0 - intmath.h
Add av_ctz() for trailing zero bit count
2012-10-21 - e3a91c5 / a893655 - lavu 51.77.100 / 51.45.0 - error.h
Add AVERROR_EXPERIMENTAL
2012-10-12 - a33ed6b / d2fcb35 - lavu 51.76.100 / 51.44.0 - pixdesc.h
Add functions for accessing pixel format descriptors.
Accessing the av_pix_fmt_descriptors array directly is now
deprecated.
2012-10-11 - f391e40 / 9a92aea - lavu 51.75.100 / 51.43.0 - aes.h, md5.h, sha.h, tree.h
Add functions for allocating the opaque contexts for the algorithms,
2012-10-10 - de31814 / b522000 - lavf 54.32.100 / 54.18.0 - avio.h
Add avio_closep to complement avio_close.
2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h
Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
To provide backwards compatibility, PixelFormat is now #defined as
AVPixelFormat.
Note that this can break user code that includes pixfmt.h and uses the
'PixelFormat' identifier. Such code should either #undef PixelFormat
or stop using the PixelFormat name.
2012-10-05 - 55c49af / e7ba5b1 - lavr 1.0.0 - avresample.h
Data planes parameters to avresample_convert() and
avresample_read() are now uint8_t** instead of void**.
Libavresample is now stable.
2012-09-24 - 46a3595 / a42aada - lavc 54.59.100 / 54.28.0 - avcodec.h
Add avcodec_free_frame(). This function must now
be used for freeing an AVFrame.
2012-09-12 - e3e09f2 / 8919fee - lavu 51.73.100 / 51.41.0 - audioconvert.h
Added AV_CH_LOW_FREQUENCY_2 channel mask value.
2012-09-04 - b21b5b0 / 686a329 - lavu 51.71.100 / 51.40.0 - opt.h
Reordered the fields in default_val in AVOption, changed which
default_val field is used for which AVOptionType.
2012-08-30 - 98298eb / a231832 - lavc 54.54.101 / 54.26.1 - avcodec.h
Add codec descriptor properties AV_CODEC_PROP_LOSSY and
AV_CODEC_PROP_LOSSLESS.
2012-08-18 - lavc 54.26 - avcodec.h
Add codec descriptors for accessing codec properties without having
to refer to a specific decoder or encoder.
f5f3684 / c223d79 - Add an AVCodecDescriptor struct and functions
avcodec_descriptor_get() and avcodec_descriptor_next().
f5f3684 / 51efed1 - Add AVCodecDescriptor.props and AV_CODEC_PROP_INTRA_ONLY.
6c180b3 / 91e59fe - Add avcodec_descriptor_get_by_name().
2012-08-08 - f5f3684 / 987170c - lavu 51.68.100 / 51.38.0 - dict.h
Add av_dict_count().
2012-08-07 - 7a72695 / 104e10f - lavc 54.51.100 / 54.25.0 - avcodec.h
Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
To provide backwards compatibility, CodecID is now #defined as AVCodecID.
Note that this can break user code that includes avcodec.h and uses the
'CodecID' identifier. Such code should either #undef CodecID or stop using the
CodecID name.
2012-08-03 - e776ee8 / 239fdf1 - lavu 51.66.101 / 51.37.1 - cpu.h
lsws 2.1.1 - swscale.h
Rename AV_CPU_FLAG_MMX2 ---> AV_CPU_FLAG_MMXEXT.
Rename SWS_CPU_CAPS_MMX2 ---> SWS_CPU_CAPS_MMXEXT.
2012-07-29 - 7c26761 / 681ed00 - lavf 54.22.100 / 54.13.0 - avformat.h
Add AVFMT_FLAG_NOBUFFER for low latency use cases.
2012-07-10 - fbe0245 / f3e5e6f - lavu 51.65.100 / 51.37.0
Add av_malloc_array() and av_mallocz_array()
2012-06-22 - e847f41 / d3d3a32 - lavu 51.61.100 / 51.34.0
Add av_usleep()
2012-06-20 - 4da42eb / ae0a301 - lavu 51.60.100 / 51.33.0
Move av_gettime() to libavutil, add libavutil/time.h
2012-06-09 - 82edf67 / 3971be0 - lavr 0.0.3
Add a parameter to avresample_build_matrix() for Dolby/DPLII downmixing.
2012-06-12 - c7b9eab / 9baeff9 - lavfi 2.79.100 / 2.23.0 - avfilter.h
Add AVFilterContext.nb_inputs/outputs. Deprecate
AVFilterContext.input/output_count.
2012-06-12 - c7b9eab / 84b9fbe - lavfi 2.79.100 / 2.22.0 - avfilter.h
Add avfilter_pad_get_type() and avfilter_pad_get_name(). Those
should now be used instead of accessing AVFilterPad members
directly.
2012-06-12 - 3630a07 / b0f0dfc - lavu 51.57.100 / 51.32.0 - audioconvert.h
Add av_get_channel_layout_channel_index(), av_get_channel_name()
and av_channel_layout_extract_channel().
2012-05-25 - 53ce990 / 154486f - lavu 51.55.100 / 51.31.0 - opt.h
Add av_opt_set_bin()
2012-05-15 - lavfi 2.74.100 / 2.17.0
Add support for audio filters
61930bd / ac71230, 1cbf7fb / a2cd9be - add video/audio buffer sink in a new installed
header buffersink.h
1cbf7fb / 720c6b7 - add av_buffersrc_write_frame(), deprecate
av_vsrc_buffer_add_frame()
61930bd / ab16504 - add avfilter_copy_buf_props()
61930bd / 9453c9e - add extended_data to AVFilterBuffer
61930bd / 1b8c927 - add avfilter_get_audio_buffer_ref_from_arrays()
2012-05-09 - lavu 51.53.100 / 51.30.0 - samplefmt.h
61930bd / 142e740 - add av_samples_copy()
61930bd / 6d7f617 - add av_samples_set_silence()
2012-05-09 - 61930bd / a5117a2 - lavc 54.21.101 / 54.13.1
For audio formats with fixed frame size, the last frame
no longer needs to be padded with silence, libavcodec
will handle this internally (effectively all encoders
behave as if they had CODEC_CAP_SMALL_LAST_FRAME set).
2012-05-07 - 653d117 / 828bd08 - lavc 54.20.100 / 54.13.0 - avcodec.h
Add sample_rate and channel_layout fields to AVFrame.
2012-05-01 - 2330eb1 / 4010d72 - lavr 0.0.1
Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
2012-04-25 - e890b68 / 3527a73 - lavu 51.48.100 / 51.29.0 - cpu.h
Add av_parse_cpu_flags()
2012-04-24 - 3ead79e / c8af852 - lavr 0.0.0
Add libavresample audio conversion library
2012-04-20 - 3194ab7 / 0c0d1bc - lavu 51.47.100 / 51.28.0 - audio_fifo.h
Add audio FIFO functions:
av_audio_fifo_free()
av_audio_fifo_alloc()
av_audio_fifo_realloc()
av_audio_fifo_write()
av_audio_fifo_read()
av_audio_fifo_drain()
av_audio_fifo_reset()
av_audio_fifo_size()
av_audio_fifo_space()
2012-04-14 - lavfi 2.70.100 / 2.16.0 - avfiltergraph.h
7432bcf / d7bcc71 Add avfilter_graph_parse2().
2012-04-08 - 6bfb304 / 4d693b0 - lavu 51.46.100 / 51.27.0 - samplefmt.h
Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
2012-03-21 - b75c67d - lavu 51.43.100
Add bprint.h for bprint API.
2012-02-21 - 9cbf17e - lavc 54.4.100
Add av_get_pcm_codec() function.
2012-02-16 - 560b224 - libswr 0.7.100
Add swr_set_matrix() function.
2012-02-09 - c28e7af - lavu 51.39.100
Add a new installed header libavutil/timestamp.h with timestamp
utilities.
2012-02-06 - 70ffda3 - lavu 51.38.100
Add av_parse_ratio() function to parseutils.h.
2012-02-06 - 70ffda3 - lavu 51.38.100
Add AV_LOG_MAX_OFFSET macro to log.h.
2012-02-02 - 0eaa123 - lavu 51.37.100
Add public timecode helpers.
2012-01-24 - 0c3577b - lavfi 2.60.100
Add avfilter_graph_dump.
2012-03-20 - 0ebd836 / 3c90cc2 - lavfo 54.2.0
Deprecate av_read_packet(), use av_read_frame() with
AVFMT_FLAG_NOPARSE | AVFMT_FLAG_NOFILLIN in AVFormatContext.flags
2012-03-05 - lavc 54.10.100 / 54.8.0
f095391 / 6699d07 Add av_get_exact_bits_per_sample()
f095391 / 9524cf7 Add av_get_audio_frame_duration()
2012-03-04 - 2af8f2c / 44fe77b - lavc 54.8.100 / 54.7.0 - avcodec.h
Add av_codec_is_encoder/decoder().
2012-03-01 - 1eb7f39 / 442c132 - lavc 54.5.100 / 54.3.0 - avcodec.h
Add av_packet_shrink_side_data.
2012-02-29 - 79ae084 / dd2a4bc - lavf 54.2.100 / 54.2.0 - avformat.h
Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
used for dealing with attached pictures/cover art.
2012-02-25 - 305e4b3 / c9bca80 - lavu 51.41.100 / 51.24.0 - error.h
Add AVERROR_UNKNOWN
NOTE: this was backported to 0.8
2012-02-20 - eadd426 / e9cda85 - lavc 54.2.100 / 54.2.0
Add duration field to AVCodecParserContext
2012-02-20 - eadd426 / 0b42a93 - lavu 51.40.100 / 51.23.1 - mathematics.h
Add av_rescale_q_rnd()
2012-02-08 - f2b20b7 / 38d5533 - lavu 51.38.101 / 51.22.1 - pixdesc.h
Add PIX_FMT_PSEUDOPAL flag.
2012-02-08 - f2b20b7 / 52f82a1 - lavc 54.2.100 / 54.1.0
Add avcodec_encode_video2() and deprecate avcodec_encode_video().
2012-02-01 - 4c677df / 316fc74 - lavc 54.1.0
Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
zero-padded bytes at the end.
2012-01-31 - a369a6b / dd6d3b0 - lavf 54.1.0
Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
NOTE: this was backported to 0.8
2012-01-31 - a369a6b / af08d9a - lavc 54.1.0
Add avcodec_is_open() function.
NOTE: this was backported to 0.8
2012-01-30 - 151ecc2 / 8b93312 - lavu 51.36.100 / 51.22.0 - intfloat.h
Add a new installed header libavutil/intfloat.h with int/float punning
functions.
NOTE: this was backported to 0.8
2012-01-25 - lavf 53.31.100 / 53.22.0
3c5fe5b / f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
muxers supporting it (av_write_frame makes sure it is called
only for muxers with this flag).
2012-01-15 - lavc 53.56.105 / 53.34.0
New audio encoding API:
67f5650 / b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
encoders.
67f5650 / 5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
67f5650 / b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
Add AVCodec.encode2().
2012-01-12 - b18e17e / 3167dc9 - lavfi 2.59.100 / 2.15.0
Add a new installed header -- libavfilter/version.h -- with version macros.
2011-12-08 - a502939 - lavfi 2.52.0
Add av_buffersink_poll_frame() to buffersink.h.
2011-12-08 - 26c6fec - lavu 51.31.0
Add av_log_format_line.
2011-12-03 - 976b095 - lavu 51.30.0
Add AVERROR_BUG.
2011-11-24 - 573ffbb - lavu 51.28.1
Add av_get_alt_sample_fmt() to samplefmt.h.
2011-11-03 - 96949da - lavu 51.23.0
Add av_strcasecmp() and av_strncasecmp() to avstring.h.
2011-10-20 - b35e9e1 - lavu 51.22.0
Add av_strtok() to avstring.h.
2012-01-03 - ad1c8dd / b73ec05 - lavu 51.34.100 / 51.21.0
Add av_popcount64
2011-12-18 - 7c29313 / 8400b12 - lavc 53.46.1 / 53.28.1
Deprecate AVFrame.age. The field is unused.
2011-12-12 - 8bc7fe4 / 5266045 - lavf 53.25.0 / 53.17.0
Add avformat_close_input().
Deprecate av_close_input_file() and av_close_input_stream().
2011-12-02 - e4de716 / 0eea212 - lavc 53.40.0 / 53.25.0
Add nb_samples and extended_data fields to AVFrame.
Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
avcodec_decode_audio4() writes output samples to an AVFrame, which allows
audio decoders to use get_buffer().
2011-12-04 - e4de716 / 560f773 - lavc 53.40.0 / 53.24.0
Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
Change AVCodecContext.error[4] to [8] at next major bump.
Add AV_NUM_DATA_POINTERS to simplify the bump transition.
2011-11-23 - 8e576d5 / bbb46f3 - lavu 51.27.0 / 51.18.0
Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
av_samples_alloc(), to samplefmt.h.
2011-11-23 - 8e576d5 / 8889cc4 - lavu 51.27.0 / 51.17.0
Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
2011-11-19 - dbb38bc / f3a29b7 - lavc 53.36.0 / 53.21.0
Move some AVCodecContext fields to a new private struct, AVCodecInternal,
which is accessed from a new field, AVCodecContext.internal.
- fields moved:
AVCodecContext.internal_buffer --> AVCodecInternal.buffer
AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
AVCodecContext.is_copy --> AVCodecInternal.is_copy
2011-11-16 - 8709ba9 / 6270671 - lavu 51.26.0 / 51.16.0
Add av_timegm()
2011-11-13 - lavf 53.21.0 / 53.15.0
New interrupt callback API, allowing per-AVFormatContext/AVIOContext
interrupt callbacks.
5f268ca / 6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
AVFormatContext.
5f268ca / 1dee0ac Add avio_open2() with additional parameters. Those are
an interrupt callback and an options AVDictionary.
This will allow passing AVOptions to protocols after lavf
54.0.
2011-11-06 - 13b7781 / ba04ecf - lavu 51.24.0 / 51.14.0
Add av_strcasecmp() and av_strncasecmp() to avstring.h.
2011-11-06 - 13b7781 / 07b172f - lavu 51.24.0 / 51.13.0
Add av_toupper()/av_tolower()
2011-11-05 - d8cab5c / b6d08f4 - lavf 53.19.0 / 53.13.0
Add avformat_network_init()/avformat_network_deinit()
2011-10-27 - 6faf0a2 / 512557b - lavc 53.24.0 / 53.15.0
Remove avcodec_parse_frame.
Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
2011-10-19 - d049257 / 569129a - lavf 53.17.0 / 53.10.0
Add avformat_new_stream(). Deprecate av_new_stream().
2011-10-13 - 91eb1b1 / b631fba - lavf 53.16.0 / 53.9.0
Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
2011-10-12 - lavu 51.21.0 / 51.12.0
AVOptions API rewrite.
- f884ef0 / 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
- new setting/getting functions with slightly different semantics:
f884ef0 / dac66da av_set_string3 -> av_opt_set
av_set_double -> av_opt_set_double
av_set_q -> av_opt_set_q
av_set_int -> av_opt_set_int
f884ef0 / 41d9d51 av_get_string -> av_opt_get
av_get_double -> av_opt_get_double
av_get_q -> av_opt_get_q
av_get_int -> av_opt_get_int
- f884ef0 / 8c5dcaa trivial rename av_next_option -> av_opt_next
- f884ef0 / 641c7af new functions - av_opt_child_next, av_opt_child_class_next
and av_opt_find2()
2011-09-22 - a70e787 - lavu 51.17.0
Add av_x_if_null().
2011-09-18 - 645cebb - lavc 53.16.0
Add showall flag2
2011-09-16 - ea8de10 - lavfi 2.42.0
Add avfilter_all_channel_layouts.
2011-09-16 - 9899037 - lavfi 2.41.0
Rename avfilter_all_* function names to avfilter_make_all_*.
In particular, apply the renames:
avfilter_all_formats -> avfilter_make_all_formats
avfilter_all_channel_layouts -> avfilter_make_all_channel_layouts
avfilter_all_packing_formats -> avfilter_make_all_packing_formats
2011-09-12 - 4381bdd - lavfi 2.40.0
Change AVFilterBufferRefAudioProps.sample_rate type from uint32_t to int.
2011-09-12 - 2c03174 - lavfi 2.40.0
Simplify signature for avfilter_get_audio_buffer(), make it
consistent with avfilter_get_video_buffer().
2011-09-06 - 4f7dfe1 - lavfi 2.39.0
Rename libavfilter/vsink_buffer.h to libavfilter/buffersink.h.
2011-09-06 - c4415f6 - lavfi 2.38.0
Unify video and audio sink API.
In particular, add av_buffersink_get_buffer_ref(), deprecate
av_vsink_buffer_get_video_buffer_ref() and change the value for the
opaque field passed to the abuffersink init function.
2011-09-04 - 61e2e29 - lavu 51.16.0
Add av_asprintf().
2011-08-22 - dacd827 - lavf 53.10.0
Add av_find_program_from_stream().
2011-08-20 - 69e2c1a - lavu 51.13.0
Add av_get_media_type_string().
2011-09-03 - 1889c67 / fb4ca26 - lavc 53.13.0
lavf 53.11.0
lsws 2.1.0
Add {avcodec,avformat,sws}_get_class().
2011-08-03 - 1889c67 / c11fb82 - lavu 51.15.0
Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
2011-08-14 - 323b930 - lavu 51.12.0
Add av_fifo_peek2(), deprecate av_fifo_peek().
2011-08-26 - lavu 51.14.0 / 51.9.0
- 976a8b2 / add41de..976a8b2 / abc78a5 Do not include intfloat_readwrite.h,
mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
2011-08-16 - 27fbe31 / 48f9e45 - lavf 53.11.0 / 53.8.0
Add avformat_query_codec().
2011-08-16 - 27fbe31 / bca06e7 - lavc 53.11.0
Add avcodec_get_type().
2011-08-06 - 0cb233c / 2f63440 - lavf 53.7.0
Add error_recognition to AVFormatContext.
2011-08-02 - 1d186e9 / 9d39cbf - lavc 53.9.1
Add AV_PKT_FLAG_CORRUPT AVPacket flag.
2011-07-16 - b57df29 - lavfi 2.27.0
Add audio packing negotiation fields and helper functions.
In particular, add AVFilterPacking enum, planar, in_packings and
out_packings fields to AVFilterLink, and the functions:
avfilter_set_common_packing_formats()
avfilter_all_packing_formats()
2011-07-10 - 3602ad7 / a67c061 - lavf 53.6.0
Add avformat_find_stream_info(), deprecate av_find_stream_info().
NOTE: this was backported to 0.7
2011-07-10 - 3602ad7 / 0b950fe - lavc 53.8.0
Add avcodec_open2(), deprecate avcodec_open().
NOTE: this was backported to 0.7
Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
avcodec_alloc_context2().
2011-07-01 - b442ca6 - lavf 53.5.0 - avformat.h
Add function av_get_output_timestamp().
2011-06-28 - 5129336 - lavu 51.11.0 - avutil.h
Define the AV_PICTURE_TYPE_NONE value in AVPictureType enum.
2011-06-19 - fd2c0a5 - lavfi 2.23.0 - avfilter.h
Add layout negotiation fields and helper functions.
In particular, add in_chlayouts and out_chlayouts to AVFilterLink,
and the functions:
avfilter_set_common_sample_formats()
avfilter_set_common_channel_layouts()
avfilter_all_channel_layouts()
2011-06-19 - 527ca39 - lavfi 2.22.0 - AVFilterFormats
Change type of AVFilterFormats.formats from int * to int64_t *,
and update formats handling API accordingly.
avfilter_make_format_list() still takes a int32_t array and converts
it to int64_t. A new function, avfilter_make_format64_list(), that
takes int64_t arrays has been added.
2011-06-19 - 44f669e - lavfi 2.21.0 - vsink_buffer.h
Add video sink buffer and vsink_buffer.h public header.
2011-06-12 - 9fdf772 - lavfi 2.18.0 - avcodec.h
Add avfilter_get_video_buffer_ref_from_frame() function in
libavfilter/avcodec.h.
2011-06-12 - c535494 - lavfi 2.17.0 - avfiltergraph.h
Add avfilter_inout_alloc() and avfilter_inout_free() functions.
2011-06-12 - 6119b23 - lavfi 2.16.0 - avfilter_graph_parse()
Change avfilter_graph_parse() signature.
2011-06-23 - 686959e / 67e9ae1 - lavu 51.10.0 / 51.8.0 - attributes.h
Add av_printf_format().
2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53.4.0 / 53.2.0 - avformat.h
Add avformat_open_input and avformat_write_header().
Deprecate av_open_input_stream, av_open_input_file,
AVFormatParameters and av_write_header.
2011-06-16 - 2905e3f / 7e83e1c, 2905e3f / dc59ec5 - lavu 51.9.0 / 51.7.0 - opt.h
Add av_opt_set_dict() and av_opt_find().
Deprecate av_find_opt().
Add AV_DICT_APPEND flag.
2011-06-10 - 45fb647 / cb7c11c - lavu 51.6.0 - opt.h
Add av_opt_flag_is_set().
2011-06-10 - c381960 - lavfi 2.15.0 - avfilter_get_audio_buffer_ref_from_arrays
Add avfilter_get_audio_buffer_ref_from_arrays() to avfilter.h.
2011-06-09 - f9ecb84 / d9f80ea - lavu 51.8.0 - AVMetadata
Move AVMetadata from lavf to lavu and rename it to
AVDictionary -- new installed header dict.h.
All av_metadata_* functions renamed to av_dict_*.
2011-06-07 - d552f61 / a6703fa - lavu 51.8.0 - av_get_bytes_per_sample()
Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
Deprecate av_get_bits_per_sample_fmt().
2011-06-05 - f956924 / b39b062 - lavu 51.8.0 - opt.h
Add av_opt_free convenience function.
2011-06-06 - 95a0242 - lavfi 2.14.0 - AVFilterBufferRefAudioProps
Remove AVFilterBufferRefAudioProps.size, and use nb_samples in
avfilter_get_audio_buffer() and avfilter_default_get_audio_buffer() in
place of size.
2011-06-06 - 0bc2cca - lavu 51.6.0 - av_samples_alloc()
Switch nb_channels and nb_samples parameters order in
av_samples_alloc().
2011-06-06 - e1c7414 - lavu 51.5.0 - av_samples_*
Change the data layout created by av_samples_fill_arrays() and
av_samples_alloc().
2011-06-06 - 27bcf55 - lavfi 2.13.0 - vsrc_buffer.h
Make av_vsrc_buffer_add_video_buffer_ref() accepts an additional
flags parameter in input.
2011-06-03 - e977ca2 - lavfi 2.12.0 - avfilter_link_free()
Add avfilter_link_free() function.
2011-06-02 - 5ad38d9 - lavu 51.4.0 - av_force_cpu_flags()
Add av_cpu_flags() in libavutil/cpu.h.
2011-05-28 - e71f260 - lavu 51.3.0 - pixdesc.h
Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
2011-05-25 - 39e4206 / 30315a8 - lavf 53.3.0 - avformat.h
Add fps_probe_size to AVFormatContext.
2011-05-22 - 5ecdfd0 - lavf 53.2.0 - avformat.h
Introduce avformat_alloc_output_context2() and deprecate
avformat_alloc_output_context().
2011-05-22 - 83db719 - lavfi 2.10.0 - vsrc_buffer.h
Make libavfilter/vsrc_buffer.h public.
2011-05-19 - c000a9f - lavfi 2.8.0 - avcodec.h
Add av_vsrc_buffer_add_frame() to libavfilter/avcodec.h.
2011-05-14 - 9fdf772 - lavfi 2.6.0 - avcodec.h
Add avfilter_get_video_buffer_ref_from_frame() to libavfilter/avcodec.h.
2011-05-18 - 75a37b5 / 64150ff - lavc 53.7.0 - AVCodecContext.request_sample_fmt
Add request_sample_fmt field to AVCodecContext.
2011-05-10 - 59eb12f / 188dea1 - lavc 53.6.0 - avcodec.h
Deprecate AVLPCType and the following fields in
AVCodecContext: lpc_coeff_precision, prediction_order_method,
min_partition_order, max_partition_order, lpc_type, lpc_passes.
Corresponding FLAC encoder options should be used instead.
2011-05-07 - 9fdf772 - lavfi 2.5.0 - avcodec.h
Add libavfilter/avcodec.h header and avfilter_copy_frame_props()
function.
2011-05-07 - 18ded93 - lavc 53.5.0 - AVFrame
Add format field to AVFrame.
2011-05-07 - 22333a6 - lavc 53.4.0 - AVFrame
Add width and height fields to AVFrame.
2011-05-01 - 35fe66a - lavfi 2.4.0 - avfilter.h
Rename AVFilterBufferRefVideoProps.pixel_aspect to
sample_aspect_ratio.
2011-05-01 - 77e9dee - lavc 53.3.0 - AVFrame
Add a sample_aspect_ratio field to AVFrame.
2011-05-01 - 1ba5727 - lavc 53.2.0 - AVFrame
Add a pkt_pos field to AVFrame.
2011-04-29 - 35ceaa7 - lavu 51.2.0 - mem.h
Add av_dynarray_add function for adding
an element to a dynamic array.
2011-04-26 - d7e5aeb / bebe72f - lavu 51.1.0 - avutil.h
Add AVPictureType enum and av_get_picture_type_char(), deprecate
FF_*_TYPE defines and av_get_pict_type_char() defined in
libavcodec/avcodec.h.
2011-04-26 - d7e5aeb / 10d3940 - lavfi 2.3.0 - avfilter.h
Add pict_type and key_frame fields to AVFilterBufferRefVideo.
2011-04-26 - d7e5aeb / 7a11c82 - lavfi 2.2.0 - vsrc_buffer
Add sample_aspect_ratio fields to vsrc_buffer arguments
2011-04-21 - 8772156 / 94f7451 - lavc 53.1.0 - avcodec.h
Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
2011-04-15 - lavc 52.120.0 - avcodec.h
AVPacket structure got additional members for passing side information:
c407984 / 4de339e introduce side information for AVPacket
c407984 / 2d8591c make containers pass palette change in AVPacket
2011-04-12 - lavf 52.107.0 - avio.h
Avio cleanup, part II - deprecate the entire URLContext API:
c55780d / 175389c add avio_check as a replacement for url_exist
9891004 / ff1ec0c add avio_pause and avio_seek_time as replacements
for _av_url_read_fseek/fpause
d4d0932 / cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
should be used instead.
c88caa5 / 80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
c88caa5 / f87b1b3 rename open flags: URL_* -> AVIO_*
d4d0932 / f8270bb add avio_enum_protocols.
d4d0932 / 5593f03 deprecate URLProtocol.
d4d0932 / c486dad deprecate URLContext.
d4d0932 / 026e175 deprecate the typedef for URLInterruptCB
c88caa5 / 8e76a19 deprecate av_register_protocol2.
11d7841 / b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
11d7841 / 1305d93 deprecate av_url_read_seek
11d7841 / fa104e1 deprecate av_url_read_pause
434f248 / 727c7aa deprecate url_get_filename().
434f248 / 5958df3 deprecate url_max_packet_size().
434f248 / 1869ea0 deprecate url_get_file_handle().
434f248 / 32a97d4 deprecate url_filesize().
434f248 / e52a914 deprecate url_close().
434f248 / 58a48c6 deprecate url_seek().
434f248 / 925e908 deprecate url_write().
434f248 / dce3756 deprecate url_read_complete().
434f248 / bc371ac deprecate url_read().
434f248 / 0589da0 deprecate url_open().
434f248 / 62eaaea deprecate url_connect.
434f248 / 5652bb9 deprecate url_alloc.
434f248 / 333e894 deprecate url_open_protocol
434f248 / e230705 deprecate url_poll and URLPollEntry
2011-04-08 - lavf 52.106.0 - avformat.h
Minor avformat.h cleanup:
d4d0932 / a9bf9d8 deprecate av_guess_image2_codec
d4d0932 / c3675df rename avf_sdp_create->av_sdp_create
2011-04-03 - lavf 52.105.0 - avio.h
Large-scale renaming/deprecating of AVIOContext-related functions:
2cae980 / 724f6a0 deprecate url_fdopen
2cae980 / 403ee83 deprecate url_open_dyn_packet_buf
2cae980 / 6dc7d80 rename url_close_dyn_buf -> avio_close_dyn_buf
2cae980 / b92c545 rename url_open_dyn_buf -> avio_open_dyn_buf
2cae980 / 8978fed introduce an AVIOContext.seekable field as a replacement for
AVIOContext.is_streamed and url_is_streamed()
1caa412 / b64030f deprecate get_checksum()
1caa412 / 4c4427a deprecate init_checksum()
2fd41c9 / 4ec153b deprecate udp_set_remote_url/get_local_port
4fa0e24 / 933e90a deprecate av_url_read_fseek/fpause
4fa0e24 / 8d9769a deprecate url_fileno
0fecf26 / b7f2fdd rename put_flush_packet -> avio_flush
0fecf26 / 35f1023 deprecate url_close_buf
0fecf26 / 83fddae deprecate url_open_buf
0fecf26 / d9d86e0 rename url_fprintf -> avio_printf
0fecf26 / 59f65d9 deprecate url_setbufsize
6947b0c / 3e68b3b deprecate url_ferror
e8bb2e2 deprecate url_fget_max_packet_size
76aa876 rename url_fsize -> avio_size
e519753 deprecate url_fgetc
655e45e deprecate url_fgets
a2704c9 rename url_ftell -> avio_tell
e16ead0 deprecate get_strz() in favor of avio_get_str
0300db8,2af07d3 rename url_fskip -> avio_skip
6b4aa5d rename url_fseek -> avio_seek
61840b4 deprecate put_tag
22a3212 rename url_fopen/fclose -> avio_open/close.
0ac8e2b deprecate put_nbyte
77eb550 rename put_byte -> avio_w8
put_[b/l]e<type> -> avio_w[b/l]<type>
put_buffer -> avio_write
b7effd4 rename get_byte -> avio_r8,
get_[b/l]e<type> -> avio_r[b/l]<type>
get_buffer -> avio_read
b3db9ce deprecate get_partial_buffer
8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
2011-03-25 - 27ef7b1 / 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
Add audio_service_type field to AVCodecContext.
2011-03-17 - e309fdc - lavu 50.40.0 - pixfmt.h
Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
2011-03-02 - 863c471 - lavf 52.103.0 - av_pkt_dump2, av_pkt_dump_log2
Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
source stream timebase for outputting timestamps. Deprecate
av_pkt_dump and av_pkt_dump_log.
2011-02-20 - e731b8d - lavf 52.102.0 - avio.h
* e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
original, and move it to a private header so it is no longer
part of our public API. Instead, use av_alloc_put_byte().
* ae628ec - rename ByteIOContext to AVIOContext.
2011-02-16 - 09d171b - lavf 52.101.0 - avformat.h
lavu 52.39.0 - parseutils.h
* 610219a - Add av_ prefix to dump_format().
* f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
* ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
2011-02-15 - lavu 52.38.0 - merge libavcore
libavcore is merged back completely into libavutil
2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
Add vbv_delay field to AVCodecContext
2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
Add sample_aspect_ratio field to AVFilterLink.
2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
2011-02-09 - c0b102c - lavc 52.112.0 - avcodec_thread_init()
Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
set thread_count before calling avcodec_open.
2011-02-09 - 37b00b4 - lavc 52.111.0 - threading API
Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
Add thread_type and active_thread_type fields to AVCodecContext.
2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
Add av_probe_input_buffer() to avformat.h for probing format from a
ByteIOContext.
2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
Add avformat_free_context() in avformat.h.
2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
Add CODEC_ID_PRORES to avcodec.h.
2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
Add defines for H.264 * Constrained Baseline and Intra profiles
2011-02-02 - lavf 52.95.0
* 50196a9 - add a new installed header version.h.
* 4efd5cf, dccbd97, 93b78d1 - add several variants of public
avio_{put,get}_str* functions. Deprecate corresponding semi-public
{put,get}_str*.
2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
Make av_dlog public.
2011-01-31 - 7b3ea55 - lavfi 1.76.0 - vsrc_buffer
Add sample_aspect_ratio fields to vsrc_buffer arguments
2011-01-31 - 910b5b8 - lavfi 1.75.0 - AVFilterLink sample_aspect_ratio
Add sample_aspect_ratio field to AVFilterLink.
2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
Add av_metadata_copy() in avformat.h.
2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
Deprecate reordered_opaque in favor of pkt_pts/dts.
2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
to not mess up dts.
2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
Add pkt_pts to AVFrame.
2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
Add av_get_profile_name to libavcodec/avcodec.h.
2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
Add AV_PERM_NEG_LINESIZES in avfilter.h.
2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
Add av_find_best_stream to libavformat/avformat.h.
2010-12-27 - 107a7e3 - lavf 52.90.0
Add AVFMT_NOSTREAMS flag for formats with no streams,
like e.g. text metadata.
2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
Add functions av_file_map() and av_file_unmap() in file.h.
2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
Add "not found" error codes:
AVERROR_DEMUXER_NOT_FOUND
AVERROR_MUXER_NOT_FOUND
AVERROR_DECODER_NOT_FOUND
AVERROR_ENCODER_NOT_FOUND
AVERROR_PROTOCOL_NOT_FOUND
AVERROR_FILTER_NOT_FOUND
AVERROR_BSF_NOT_FOUND
AVERROR_STREAM_NOT_FOUND
2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
avcodec.h to avcore.h.
2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
Deprecate avcodec_pix_fmt_string() in favor of
pixdesc.h/av_get_pix_fmt_string().
2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
Add av_image_alloc() to libavcore/imgutils.h.
2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
Add function avfilter_graph_create_filter() in avfiltergraph.h.
2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
Add function avfilter_get_video_buffer_ref_from_arrays() in
avfilter.h.
2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
Add a public audio channel API in audioconvert.h, and deprecate the
corresponding functions in libavcodec:
avcodec_get_channel_name()
avcodec_get_channel_layout()
avcodec_get_channel_layout_string()
avcodec_channel_layout_num_channels()
and the CH_* macros defined in libavcodec/avcodec.h.
2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
Add av_append_packet().
2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
Add av_grow_packet().
2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
Add av_parse_color() declared in libavcore/parseutils.h.
2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
fields.
2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
Make avfiltergraph.h public.
2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
Remove declarations from avfiltergraph.h for the functions:
avfilter_graph_check_validity()
avfilter_graph_config_links()
avfilter_graph_config_formats()
which are now internal.
Use avfilter_graph_config() instead.
2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
Deprecate functions:
av_parse_and_eval_expr(),
av_parse_expr(),
av_eval_expr(),
av_free_expr(),
in favor of the functions:
av_expr_parse_and_eval(),
av_expr_parse(),
av_expr_eval(),
av_expr_free().
2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
Rename avfilter_destroy() to avfilter_free().
This change breaks libavfilter API/ABI.
2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
Remove graphparser.h header, move AVFilterInOut and
avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
This change breaks libavfilter API.
2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
Rename avfilter_graph_destroy() to avfilter_graph_free().
This change breaks libavfilter API/ABI.
2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
deprecate av_get_bits_per_sample_format().
2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
Add sample format functions in libavcore/samplefmt.h:
av_get_sample_fmt_name(),
av_get_sample_fmt(),
av_get_sample_fmt_string(),
and deprecate the corresponding libavcodec/audioconvert.h functions:
avcodec_get_sample_fmt_name(),
avcodec_get_sample_fmt(),
avcodec_sample_fmt_string().
2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
SampleFormat.
2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
Add the function avfilter_graph_config() in avfiltergraph.h.
2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
Change demuxers to export metadata in generic format and
muxers to accept generic format. Deprecate the public
conversion API.
2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
Add time_base field to AVFilterLink.
2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
Move av_set_options_string() from libavfilter/parseutils.h to
libavutil/opt.h.
2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
Make the AVFilterLink fields srcpad and dstpad store the pointers to
the source and destination pads, rather than their indexes.
2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
Move av_get_token() from libavfilter/parseutils.h to
libavutil/avstring.h.
2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
Add the functions sws_alloc_context() and sws_init_context().
2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
Move libavcodec/opt.h to libavutil/opt.h.
2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
Default of av_log() changed due to many problems to the old no repeat
detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
enabling it for your app!.
2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
Deprecate av_opt_show() in favor or av_opt_show2().
2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
Add av_popcount() to libavutil/common.h.
2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
Add av_get_cpu_flags().
2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
Add av_image_copy().
2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
Add av_image_copy_plane().
2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
Adopt hierarchical scheme for the imgutils.h function names,
deprecate the old names.
2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
Add avcodec_get_channel_layout() in audioconvert.h.
2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
Add av_fill_image_max_pixstep() in imgutils.h.
2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
Add the AV_NE macro.
2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
Implement AVFilterBufferRefAudioProps struct for audio properties,
get_audio_buffer(), filter_samples() functions and related changes.
2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
Add av_get_image_linesize() in imgutils.h.
2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
Resize data and linesize arrays in AVFilterBufferRef to 8.
This change breaks libavfilter API/ABI.
2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
Add av_picture_data_copy in avcodec.h.
2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
Change avfilter_open() signature:
AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
This change breaks libavfilter API/ABI.
2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
Add a type field to AVFilterBufferRef, and move video specific
properties to AVFilterBufferRefVideoProps.
This change breaks libavfilter API/ABI.
2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
Rename AVFilterLink fields:
AVFilterLink.srcpic -> AVFilterLink.src_buf
AVFilterLink.cur_pic -> AVFilterLink.cur_buf
AVFilterLink.outpic -> AVFilterLink.out_buf
2010-08-07 - 7fce481 - lavfi 1.30.0
Rename functions and fields:
avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
Rename AVFilterPicRef to AVFilterBufferRef.
2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
Move format field from AVFilterBuffer to AVFilterPicRef.
2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
Deprecate avcodec_check_dimensions() in favor of the function
av_check_image_size() defined in libavcore/imgutils.h.
2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
Increase size of the arrays AVFilterBuffer.data and
AVFilterBuffer.linesize from 4 to 8.
This change breaks libavfilter ABI.
2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
Add functions av_fill_image_linesizes() and
av_fill_image_pointers(), declared in libavcore/imgutils.h.
2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
defined in libavcodec in favor of the newly added functions
av_parse_video_size() and av_parse_video_rate() declared in
libavcore/parseutils.h.
2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
Add the M_PHI constant definition.
2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
Add a type field to AVFilterLink.
Change the field types:
enum PixelFormat format -> int format in AVFilterBuffer
enum PixelFormat *formats -> int *formats in AVFilterFormats
enum PixelFormat *format -> int format in AVFilterLink
Change the function signatures:
AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
AVFilterFormats *avfilter_make_format_list(const int *fmts);
int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
int avfilter_add_format (AVFilterFormats **avff, int fmt);
AVFilterFormats *avfilter_all_colorspaces(void); ->
AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
This change breaks libavfilter API/ABI.
2010-07-21 - aac6ca6 - lavcore 0.0.0
Add libavcore.
2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
Remove w and h fields from AVFilterBuffer.
2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
Rename AVFilterPic to AVFilterBuffer.
2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
Make url_fskip() return an int error code instead of void.
2010-07-11 - 23940f1 - lavc 52.83.0
Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
Add AVLPCType enum.
Deprecate AVCodecContext.use_lpc.
2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
Add a function for free the contents of a AVSubtitle generated by
avcodec_decode_subtitle.
2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
Make the bswap.h and intreadwrite.h API public.
2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
Rename read/write_line() to av_read/write_image_line().
2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
Add avfilter_copy_picref_props().
2010-07-03 - 2d525ef - lavc 52.79.0
Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
lfg.h.
2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
Extend av_parse_color() syntax, make it accept an alpha value specifier and
set the alpha value to 255 by default.
2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
Add priv_data_size and priv_data_class to URLProtocol.
2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
Add url_alloc() and url_connect().
2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
Add av_register_protocol2(), deprecating av_register_protocol().
2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
Add av_compare_mod() to libavutil/mathematics.h.
2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
Make the eval API public.
2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
Add AV_BASE64_SIZE() macro.
2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
Add av_get_codec_tag_string().
2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
Add CODEC_CAP_EXPERIMENTAL flag.
NOTE: this was backported to 0.6
2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
Add av_get_random_seed().
2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
NOTE: this was backported to 0.6
2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
Add interlaced and top_field_first fields to AVFilterPicRef.
------------------------------8<-------------------------------------
0.6 branch was cut here
----------------------------->8--------------------------------------
2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
Add av_probe_input_format2 to API, it allows ignoring probe
results below given score and returns the actual probe score.
2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
Add a flag for av_metadata_set2() to disable overwriting of
existing tags.
2010-04-01 - 0fb49b5 - lavc 52.66.0
Add avcodec_get_edge_width().
2010-03-31 - d103218 - lavc 52.65.0
Add avcodec_copy_context().
2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
Make av_match_ext() public.
2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
Move AVMediaType enum from libavcodec to libavutil.
2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
Define AVMediaType enum, and use it instead of enum CodecType, which
is deprecated and will be dropped at the next major bump.
2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
Implement av_strerror().
2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
Support DCT-I and DST-I.
2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
Add AVFormatContext.start_time_realtime field.
2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
Add AVFilterPicRef.pos field.
2010-03-13 - 60c144f - lavu 50.12.0 - error.h
Move error code definitions from libavcodec/avcodec.h to
the new public header libavutil/error.h.
2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
Add public FFT interface.
2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
Add av_stristr().
2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
Add av_tree_enumerate().
2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
Add av_compare_ts().
2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
Add sws_getCoefficients().
2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
Add a list of generic tag names, change 'author' -> 'artist',
'year' -> 'date'.
2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
Add av_get_pix_fmt().
2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
Change constness attributes of sws_scale() parameters.
2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
Add a log_ctx parameter to avfilter_graph_config_links().
2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
Change the avfilter_add_colorspace() signature, make it accept an
(AVFilterFormats **) rather than an (AVFilterFormats *) as before.
2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
Add avfilter_add_colorspace().
2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
Add av_match_ext(), it should be used in place of match_ext().
2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
Add av_guess_format(), it should be used in place of guess_format().
2009-12-13 - a181981 - lavf 52.43.0 - metadata API
Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
AV_METADATA_DONT_STRDUP_VAL.
2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
Add av_d2str().
2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
Add avg_frame_rate.
2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
Introduce the av_bmg_next() function.
2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
Add a slice_dir parameter to avfilter_draw_slice().
2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
Remove the next field from AVFilter, this is not anymore required.
2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
Introduce the avfilter_next() function.
2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
Change the signature of avfilter_register() to make it return an
int. This is required since now the registration operation may fail.
2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
Make the pixdesc.h API public.
2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
Add a next field to AVFilter, this is used for simplifying the
registration and management of the registered filters.
2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
Add a description field to AVFilter.
2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
Change the interface of avfilter_make_format_list() from
avfilter_make_format_list(int n, ...) to
avfilter_make_format_list(enum PixelFormat *pix_fmts).
2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
Make avfilter_get_video_buffer() recursive and add the w and h
parameters to it.
2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
Add w and h fields to AVFilterPic.
2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
This is now an unsigned int instead of a signed int.
2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
Add a pts field to AVSubtitle which gives the subtitle packet pts
in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
not work right without this.
2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
PKT_FLAG_KEY has been deprecated and will be dropped at the next
major version. Use AV_PKT_FLAG_KEY instead.
2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
av_lockmgr_register() can be used to register a callback function
that lavc (and in the future, libraries that depend on lavc) can use
to implement mutexes. The application should provide a callback function
that implements the AV_LOCK_* operations described in avcodec.h.
When the lock manager is registered, FFmpeg is guaranteed to behave
correctly in a multi-threaded application.
2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
av_free_packet() is no longer an inline function. It is now exported.
2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
Please use NULL instead. This has been supported since r16506
(lavf > 52.23.1, lavc > 52.10.0).
2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
The old decoding functions are deprecated, all new code should use the
new functions avcodec_decode_video2(), avcodec_decode_audio3() and
avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
argument instead of a const uint8_t *buf / int buf_size pair.
2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
Introduce the av_fifo_space() function.
2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
Move AVPacket declaration from libavformat/avformat.h to
libavcodec/avcodec.h.
2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
PIX_FMT_BGR32_1 are now macros.
avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
Re-sort the enum PixelFormat list accordingly.
This change breaks API/ABI backward compatibility.
2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
Add the enum PixelFormat values:
PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
2009-03-21 - ee6624e - lavu 50.0.0 - av_random*
The Mersenne Twister PRNG implemented through the av_random* functions
was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
instead.
2009-03-08 - 41dd680 - lavu 50.0.0 - AVFifoBuffer
av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
and av_fifo_realloc2.
In addition, the order of the function arguments of av_fifo_generic_read
was changed to match av_fifo_generic_write.
The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
applications, they may not use sizeof() or directly access members.
2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
Introduce a new metadata API (see av_metadata_get() and friends).
The old API is now deprecated and should not be used anymore. This especially
includes the following structure fields:
- AVFormatContext.title
- AVFormatContext.author
- AVFormatContext.copyright
- AVFormatContext.comment
- AVFormatContext.album
- AVFormatContext.year
- AVFormatContext.track
- AVFormatContext.genre
- AVStream.language
- AVStream.filename
- AVProgram.provider_name
- AVProgram.name
- AVChapter.title

/contrib/sdk/sources/ffmpeg/doc/Doxyfile
0,0 → 1,1624
# Doxyfile 1.7.1
# This file describes the settings to be used by the documentation system
# doxygen (www.doxygen.org) for a project
#
# All text after a hash (#) is considered a comment and will be ignored
# The format is:
# TAG = value [value, ...]
# For lists items can also be appended using:
# TAG += value [value, ...]
# Values that contain spaces should be placed between quotes (" ")
#---------------------------------------------------------------------------
# Project related configuration options
#---------------------------------------------------------------------------
# This tag specifies the encoding used for all characters in the config file
# that follow. The default is UTF-8 which is also the encoding used for all
# text before the first occurrence of this tag. Doxygen uses libiconv (or the
# iconv built into libc) for the transcoding. See
# http://www.gnu.org/software/libiconv for the list of possible encodings.
DOXYFILE_ENCODING = UTF-8
# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
# by quotes) that should identify the project.
PROJECT_NAME = FFmpeg
# The PROJECT_NUMBER tag can be used to enter a project or revision number.
# This could be handy for archiving the generated documentation or
# if some version control system is used.
PROJECT_NUMBER = 2.1.1
# With the PROJECT_LOGO tag one can specify a logo or icon that is included
# in the documentation. The maximum height of the logo should not exceed 55
# pixels and the maximum width should not exceed 200 pixels. Doxygen will
# copy the logo to the output directory.
PROJECT_LOGO =
# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
# base path where the generated documentation will be put.
# If a relative path is entered, it will be relative to the location
# where doxygen was started. If left blank the current directory will be used.
OUTPUT_DIRECTORY = doc/doxy
# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
# 4096 sub-directories (in 2 levels) under the output directory of each output
# format and will distribute the generated files over these directories.
# Enabling this option can be useful when feeding doxygen a huge amount of
# source files, where putting all generated files in the same directory would
# otherwise cause performance problems for the file system.
CREATE_SUBDIRS = NO
# The OUTPUT_LANGUAGE tag is used to specify the language in which all
# documentation generated by doxygen is written. Doxygen will use this
# information to generate all constant output in the proper language.
# The default language is English, other supported languages are:
# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional,
# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German,
# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English
# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian,
# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrilic, Slovak,
# Slovene, Spanish, Swedish, Ukrainian, and Vietnamese.
OUTPUT_LANGUAGE = English
# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
# include brief member descriptions after the members that are listed in
# the file and class documentation (similar to JavaDoc).
# Set to NO to disable this.
BRIEF_MEMBER_DESC = YES
# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
# the brief description of a member or function before the detailed description.
# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
# brief descriptions will be completely suppressed.
REPEAT_BRIEF = YES
# This tag implements a quasi-intelligent brief description abbreviator
# that is used to form the text in various listings. Each string
# in this list, if found as the leading text of the brief description, will be
# stripped from the text and the result after processing the whole list, is
# used as the annotated text. Otherwise, the brief description is used as-is.
# If left blank, the following values are used ("$name" is automatically
# replaced with the name of the entity): "The $name class" "The $name widget"
# "The $name file" "is" "provides" "specifies" "contains"
# "represents" "a" "an" "the"
ABBREVIATE_BRIEF =
# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
# Doxygen will generate a detailed section even if there is only a brief
# description.
ALWAYS_DETAILED_SEC = NO
# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
# inherited members of a class in the documentation of that class as if those
# members were ordinary class members. Constructors, destructors and assignment
# operators of the base classes will not be shown.
INLINE_INHERITED_MEMB = NO
# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
# path before files name in the file list and in the header files. If set
# to NO the shortest path that makes the file name unique will be used.
FULL_PATH_NAMES = YES
# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
# can be used to strip a user-defined part of the path. Stripping is
# only done if one of the specified strings matches the left-hand part of
# the path. The tag can be used to show relative paths in the file list.
# If left blank the directory from which doxygen is run is used as the
# path to strip.
STRIP_FROM_PATH = .
# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
# the path mentioned in the documentation of a class, which tells
# the reader which header file to include in order to use a class.
# If left blank only the name of the header file containing the class
# definition is used. Otherwise one should specify the include paths that
# are normally passed to the compiler using the -I flag.
STRIP_FROM_INC_PATH =
# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
# (but less readable) file names. This can be useful is your file systems
# doesn't support long names like on DOS, Mac, or CD-ROM.
SHORT_NAMES = NO
# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
# will interpret the first line (until the first dot) of a JavaDoc-style
# comment as the brief description. If set to NO, the JavaDoc
# comments will behave just like regular Qt-style comments
# (thus requiring an explicit @brief command for a brief description.)
JAVADOC_AUTOBRIEF = YES
# If the QT_AUTOBRIEF tag is set to YES then Doxygen will
# interpret the first line (until the first dot) of a Qt-style
# comment as the brief description. If set to NO, the comments
# will behave just like regular Qt-style comments (thus requiring
# an explicit \brief command for a brief description.)
QT_AUTOBRIEF = NO
# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
# treat a multi-line C++ special comment block (i.e. a block of //! or ///
# comments) as a brief description. This used to be the default behaviour.
# The new default is to treat a multi-line C++ comment block as a detailed
# description. Set this tag to YES if you prefer the old behaviour instead.
MULTILINE_CPP_IS_BRIEF = NO
# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
# member inherits the documentation from any documented member that it
# re-implements.
INHERIT_DOCS = YES
# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
# a new page for each member. If set to NO, the documentation of a member will
# be part of the file/class/namespace that contains it.
SEPARATE_MEMBER_PAGES = NO
# The TAB_SIZE tag can be used to set the number of spaces in a tab.
# Doxygen uses this value to replace tabs by spaces in code fragments.
TAB_SIZE = 8
# This tag can be used to specify a number of aliases that acts
# as commands in the documentation. An alias has the form "name=value".
# For example adding "sideeffect=\par Side Effects:\n" will allow you to
# put the command \sideeffect (or @sideeffect) in the documentation, which
# will result in a user-defined paragraph with heading "Side Effects:".
# You can put \n's in the value part of an alias to insert newlines.
ALIASES =
# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
# sources only. Doxygen will then generate output that is more tailored for C.
# For instance, some of the names that are used will be different. The list
# of all members will be omitted, etc.
OPTIMIZE_OUTPUT_FOR_C = YES
# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
# sources only. Doxygen will then generate output that is more tailored for
# Java. For instance, namespaces will be presented as packages, qualified
# scopes will look different, etc.
OPTIMIZE_OUTPUT_JAVA = NO
# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
# sources only. Doxygen will then generate output that is more tailored for
# Fortran.
OPTIMIZE_FOR_FORTRAN = NO
# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
# sources. Doxygen will then generate output that is tailored for
# VHDL.
OPTIMIZE_OUTPUT_VHDL = NO
# Doxygen selects the parser to use depending on the extension of the files it
# parses. With this tag you can assign which parser to use for a given extension.
# Doxygen has a built-in mapping, but you can override or extend it using this
# tag. The format is ext=language, where ext is a file extension, and language
# is one of the parsers supported by doxygen: IDL, Java, Javascript, CSharp, C,
# C++, D, PHP, Objective-C, Python, Fortran, VHDL, C, C++. For instance to make
# doxygen treat .inc files as Fortran files (default is PHP), and .f files as C
# (default is Fortran), use: inc=Fortran f=C. Note that for custom extensions
# you also need to set FILE_PATTERNS otherwise the files are not read by doxygen.
EXTENSION_MAPPING =
# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
# to include (a tag file for) the STL sources as input, then you should
# set this tag to YES in order to let doxygen match functions declarations and
# definitions whose arguments contain STL classes (e.g. func(std::string); v.s.
# func(std::string) {}). This also make the inheritance and collaboration
# diagrams that involve STL classes more complete and accurate.
BUILTIN_STL_SUPPORT = NO
# If you use Microsoft's C++/CLI language, you should set this option to YES to
# enable parsing support.
CPP_CLI_SUPPORT = NO
# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only.
# Doxygen will parse them like normal C++ but will assume all classes use public
# instead of private inheritance when no explicit protection keyword is present.
SIP_SUPPORT = NO
# For Microsoft's IDL there are propget and propput attributes to indicate getter
# and setter methods for a property. Setting this option to YES (the default)
# will make doxygen to replace the get and set methods by a property in the
# documentation. This will only work if the methods are indeed getting or
# setting a simple type. If this is not the case, or you want to show the
# methods anyway, you should set this option to NO.
IDL_PROPERTY_SUPPORT = YES
# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
# tag is set to YES, then doxygen will reuse the documentation of the first
# member in the group (if any) for the other members of the group. By default
# all members of a group must be documented explicitly.
DISTRIBUTE_GROUP_DOC = NO
# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
# the same type (for instance a group of public functions) to be put as a
# subgroup of that type (e.g. under the Public Functions section). Set it to
# NO to prevent subgrouping. Alternatively, this can be done per class using
# the \nosubgrouping command.
SUBGROUPING = YES
# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum
# is documented as struct, union, or enum with the name of the typedef. So
# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
# with name TypeT. When disabled the typedef will appear as a member of a file,
# namespace, or class. And the struct will be named TypeS. This can typically
# be useful for C code in case the coding convention dictates that all compound
# types are typedef'ed and only the typedef is referenced, never the tag name.
TYPEDEF_HIDES_STRUCT = YES
# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to
# determine which symbols to keep in memory and which to flush to disk.
# When the cache is full, less often used symbols will be written to disk.
# For small to medium size projects (<1000 input files) the default value is
# probably good enough. For larger projects a too small cache size can cause
# doxygen to be busy swapping symbols to and from disk most of the time
# causing a significant performance penality.
# If the system has enough physical memory increasing the cache will improve the
# performance by keeping more symbols in memory. Note that the value works on
# a logarithmic scale so increasing the size by one will roughly double the
# memory usage. The cache size is given by this formula:
# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0,
# corresponding to a cache size of 2^16 = 65536 symbols
SYMBOL_CACHE_SIZE = 0
#---------------------------------------------------------------------------
# Build related configuration options
#---------------------------------------------------------------------------
# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
# documentation are documented, even if no documentation was available.
# Private class members and static file members will be hidden unless
# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
EXTRACT_ALL = YES
# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
# will be included in the documentation.
EXTRACT_PRIVATE = YES
# If the EXTRACT_STATIC tag is set to YES all static members of a file
# will be included in the documentation.
EXTRACT_STATIC = YES
# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
# defined locally in source files will be included in the documentation.
# If set to NO only classes defined in header files are included.
EXTRACT_LOCAL_CLASSES = YES
# This flag is only useful for Objective-C code. When set to YES local
# methods, which are defined in the implementation section but not in
# the interface are included in the documentation.
# If set to NO (the default) only methods in the interface are included.
EXTRACT_LOCAL_METHODS = NO
# If this flag is set to YES, the members of anonymous namespaces will be
# extracted and appear in the documentation as a namespace called
# 'anonymous_namespace{file}', where file will be replaced with the base
# name of the file that contains the anonymous namespace. By default
# anonymous namespace are hidden.
EXTRACT_ANON_NSPACES = NO
# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
# undocumented members of documented classes, files or namespaces.
# If set to NO (the default) these members will be included in the
# various overviews, but no documentation section is generated.
# This option has no effect if EXTRACT_ALL is enabled.
HIDE_UNDOC_MEMBERS = NO
# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
# undocumented classes that are normally visible in the class hierarchy.
# If set to NO (the default) these classes will be included in the various
# overviews. This option has no effect if EXTRACT_ALL is enabled.
HIDE_UNDOC_CLASSES = NO
# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
# friend (class|struct|union) declarations.
# If set to NO (the default) these declarations will be included in the
# documentation.
HIDE_FRIEND_COMPOUNDS = NO
# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
# documentation blocks found inside the body of a function.
# If set to NO (the default) these blocks will be appended to the
# function's detailed documentation block.
HIDE_IN_BODY_DOCS = NO
# The INTERNAL_DOCS tag determines if documentation
# that is typed after a \internal command is included. If the tag is set
# to NO (the default) then the documentation will be excluded.
# Set it to YES to include the internal documentation.
INTERNAL_DOCS = NO
# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
# file names in lower-case letters. If set to YES upper-case letters are also
# allowed. This is useful if you have classes or files whose names only differ
# in case and if your file system supports case sensitive file names. Windows
# and Mac users are advised to set this option to NO.
CASE_SENSE_NAMES = YES
# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
# will show members with their full class and namespace scopes in the
# documentation. If set to YES the scope will be hidden.
HIDE_SCOPE_NAMES = NO
# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
# will put a list of the files that are included by a file in the documentation
# of that file.
SHOW_INCLUDE_FILES = YES
# If the FORCE_LOCAL_INCLUDES tag is set to YES then Doxygen
# will list include files with double quotes in the documentation
# rather than with sharp brackets.
FORCE_LOCAL_INCLUDES = NO
# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
# is inserted in the documentation for inline members.
INLINE_INFO = YES
# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
# will sort the (detailed) documentation of file and class members
# alphabetically by member name. If set to NO the members will appear in
# declaration order.
SORT_MEMBER_DOCS = NO
# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
# brief documentation of file, namespace and class members alphabetically
# by member name. If set to NO (the default) the members will appear in
# declaration order.
SORT_BRIEF_DOCS = NO
# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
# will sort the (brief and detailed) documentation of class members so that
# constructors and destructors are listed first. If set to NO (the default)
# the constructors will appear in the respective orders defined by
# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS.
# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO
# and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
SORT_MEMBERS_CTORS_1ST = NO
# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the
# hierarchy of group names into alphabetical order. If set to NO (the default)
# the group names will appear in their defined order.
SORT_GROUP_NAMES = NO
# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
# sorted by fully-qualified names, including namespaces. If set to
# NO (the default), the class list will be sorted only by class name,
# not including the namespace part.
# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
# Note: This option applies only to the class list, not to the
# alphabetical list.
SORT_BY_SCOPE_NAME = NO
# The GENERATE_TODOLIST tag can be used to enable (YES) or
# disable (NO) the todo list. This list is created by putting \todo
# commands in the documentation.
GENERATE_TODOLIST = YES
# The GENERATE_TESTLIST tag can be used to enable (YES) or
# disable (NO) the test list. This list is created by putting \test
# commands in the documentation.
GENERATE_TESTLIST = YES
# The GENERATE_BUGLIST tag can be used to enable (YES) or
# disable (NO) the bug list. This list is created by putting \bug
# commands in the documentation.
GENERATE_BUGLIST = YES
# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
# disable (NO) the deprecated list. This list is created by putting
# \deprecated commands in the documentation.
GENERATE_DEPRECATEDLIST= YES
# The ENABLED_SECTIONS tag can be used to enable conditional
# documentation sections, marked by \if sectionname ... \endif.
ENABLED_SECTIONS =
# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
# the initial value of a variable or define consists of for it to appear in
# the documentation. If the initializer consists of more lines than specified
# here it will be hidden. Use a value of 0 to hide initializers completely.
# The appearance of the initializer of individual variables and defines in the
# documentation can be controlled using \showinitializer or \hideinitializer
# command in the documentation regardless of this setting.
MAX_INITIALIZER_LINES = 30
# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
# at the bottom of the documentation of classes and structs. If set to YES the
# list will mention the files that were used to generate the documentation.
SHOW_USED_FILES = YES
# Set the SHOW_FILES tag to NO to disable the generation of the Files page.
# This will remove the Files entry from the Quick Index and from the
# Folder Tree View (if specified). The default is YES.
SHOW_FILES = YES
# Set the SHOW_NAMESPACES tag to NO to disable the generation of the
# Namespaces page.
# This will remove the Namespaces entry from the Quick Index
# and from the Folder Tree View (if specified). The default is YES.
SHOW_NAMESPACES = YES
# The FILE_VERSION_FILTER tag can be used to specify a program or script that
# doxygen should invoke to get the current version for each file (typically from
# the version control system). Doxygen will invoke the program by executing (via
# popen()) the command <command> <input-file>, where <command> is the value of
# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
# provided by doxygen. Whatever the program writes to standard output
# is used as the file version. See the manual for examples.
FILE_VERSION_FILTER =
# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
# by doxygen. The layout file controls the global structure of the generated
# output files in an output format independent way. The create the layout file
# that represents doxygen's defaults, run doxygen with the -l option.
# You can optionally specify a file name after the option, if omitted
# DoxygenLayout.xml will be used as the name of the layout file.
LAYOUT_FILE =
#---------------------------------------------------------------------------
# configuration options related to warning and progress messages
#---------------------------------------------------------------------------
# The QUIET tag can be used to turn on/off the messages that are generated
# by doxygen. Possible values are YES and NO. If left blank NO is used.
QUIET = YES
# The WARNINGS tag can be used to turn on/off the warning messages that are
# generated by doxygen. Possible values are YES and NO. If left blank
# NO is used.
WARNINGS = YES
# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
# automatically be disabled.
WARN_IF_UNDOCUMENTED = YES
# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
# potential errors in the documentation, such as not documenting some
# parameters in a documented function, or documenting parameters that
# don't exist or using markup commands wrongly.
WARN_IF_DOC_ERROR = YES
# This WARN_NO_PARAMDOC option can be abled to get warnings for
# functions that are documented, but have no documentation for their parameters
# or return value. If set to NO (the default) doxygen will only warn about
# wrong or incomplete parameter documentation, but not about the absence of
# documentation.
WARN_NO_PARAMDOC = NO
# The WARN_FORMAT tag determines the format of the warning messages that
# doxygen can produce. The string should contain the $file, $line, and $text
# tags, which will be replaced by the file and line number from which the
# warning originated and the warning text. Optionally the format may contain
# $version, which will be replaced by the version of the file (if it could
# be obtained via FILE_VERSION_FILTER)
WARN_FORMAT = "$file:$line: $text"
# The WARN_LOGFILE tag can be used to specify a file to which warning
# and error messages should be written. If left blank the output is written
# to stderr.
WARN_LOGFILE =
#---------------------------------------------------------------------------
# configuration options related to the input files
#---------------------------------------------------------------------------
# The INPUT tag can be used to specify the files and/or directories that contain
# documented source files. You may enter file names like "myfile.cpp" or
# directories like "/usr/src/myproject". Separate the files or directories
# with spaces.
INPUT =
# This tag can be used to specify the character encoding of the source files
# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
# also the default input encoding. Doxygen uses libiconv (or the iconv built
# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for
# the list of possible encodings.
INPUT_ENCODING = UTF-8
# If the value of the INPUT tag contains directories, you can use the
# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
# and *.h) to filter out the source-files in the directories. If left
# blank the following patterns are tested:
# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
FILE_PATTERNS =
# The RECURSIVE tag can be used to turn specify whether or not subdirectories
# should be searched for input files as well. Possible values are YES and NO.
# If left blank NO is used.
RECURSIVE = YES
# The EXCLUDE tag can be used to specify files and/or directories that should
# excluded from the INPUT source files. This way you can easily exclude a
# subdirectory from a directory tree whose root is specified with the INPUT tag.
EXCLUDE =
# The EXCLUDE_SYMLINKS tag can be used select whether or not files or
# directories that are symbolic links (a Unix filesystem feature) are excluded
# from the input.
EXCLUDE_SYMLINKS = NO
# If the value of the INPUT tag contains directories, you can use the
# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
# certain files from those directories. Note that the wildcards are matched
# against the file with absolute path, so to exclude all test directories
# for example use the pattern */test/*
EXCLUDE_PATTERNS = *.git \
*.d
# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
# (namespaces, classes, functions, etc.) that should be excluded from the
# output. The symbol name can be a fully qualified name, a word, or if the
# wildcard * is used, a substring. Examples: ANamespace, AClass,
# AClass::ANamespace, ANamespace::*Test
EXCLUDE_SYMBOLS =
# The EXAMPLE_PATH tag can be used to specify one or more files or
# directories that contain example code fragments that are included (see
# the \include command).
EXAMPLE_PATH = doc/examples/
# If the value of the EXAMPLE_PATH tag contains directories, you can use the
# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
# and *.h) to filter out the source-files in the directories. If left
# blank all files are included.
EXAMPLE_PATTERNS = *.c
# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
# searched for input files to be used with the \include or \dontinclude
# commands irrespective of the value of the RECURSIVE tag.
# Possible values are YES and NO. If left blank NO is used.
EXAMPLE_RECURSIVE = NO
# The IMAGE_PATH tag can be used to specify one or more files or
# directories that contain image that are included in the documentation (see
# the \image command).
IMAGE_PATH =
# The INPUT_FILTER tag can be used to specify a program that doxygen should
# invoke to filter for each input file. Doxygen will invoke the filter program
# by executing (via popen()) the command <filter> <input-file>, where <filter>
# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
# input file. Doxygen will then use the output that the filter program writes
# to standard output.
# If FILTER_PATTERNS is specified, this tag will be
# ignored.
INPUT_FILTER =
# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
# basis.
# Doxygen will compare the file name with each pattern and apply the
# filter if there is a match.
# The filters are a list of the form:
# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER
# is applied to all files.
FILTER_PATTERNS =
# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
# INPUT_FILTER) will be used to filter the input files when producing source
# files to browse (i.e. when SOURCE_BROWSER is set to YES).
FILTER_SOURCE_FILES = NO
#---------------------------------------------------------------------------
# configuration options related to source browsing
#---------------------------------------------------------------------------
# If the SOURCE_BROWSER tag is set to YES then a list of source files will
# be generated. Documented entities will be cross-referenced with these sources.
# Note: To get rid of all source code in the generated output, make sure also
# VERBATIM_HEADERS is set to NO.
SOURCE_BROWSER = YES
# Setting the INLINE_SOURCES tag to YES will include the body
# of functions and classes directly in the documentation.
INLINE_SOURCES = NO
# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
# doxygen to hide any special comment blocks from generated source code
# fragments. Normal C and C++ comments will always remain visible.
STRIP_CODE_COMMENTS = NO
# If the REFERENCED_BY_RELATION tag is set to YES
# then for each documented function all documented
# functions referencing it will be listed.
REFERENCED_BY_RELATION = YES
# If the REFERENCES_RELATION tag is set to YES
# then for each documented function all documented entities
# called/used by that function will be listed.
REFERENCES_RELATION = NO
# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
# link to the source code.
# Otherwise they will link to the documentation.
REFERENCES_LINK_SOURCE = YES
# If the USE_HTAGS tag is set to YES then the references to source code
# will point to the HTML generated by the htags(1) tool instead of doxygen
# built-in source browser. The htags tool is part of GNU's global source
# tagging system (see http://www.gnu.org/software/global/global.html). You
# will need version 4.8.6 or higher.
USE_HTAGS = NO
# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
# will generate a verbatim copy of the header file for each class for
# which an include is specified. Set to NO to disable this.
VERBATIM_HEADERS = YES
#---------------------------------------------------------------------------
# configuration options related to the alphabetical class index
#---------------------------------------------------------------------------
# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
# of all compounds will be generated. Enable this if the project
# contains a lot of classes, structs, unions or interfaces.
ALPHABETICAL_INDEX = YES
# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
# in which this list will be split (can be a number in the range [1..20])
COLS_IN_ALPHA_INDEX = 2
# In case all classes in a project start with a common prefix, all
# classes will be put under the same header in the alphabetical index.
# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
# should be ignored while generating the index headers.
IGNORE_PREFIX =
#---------------------------------------------------------------------------
# configuration options related to the HTML output
#---------------------------------------------------------------------------
# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
# generate HTML output.
GENERATE_HTML = YES
# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be
# put in front of it. If left blank `html' will be used as the default path.
HTML_OUTPUT = html
# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
# doxygen will generate files with .html extension.
HTML_FILE_EXTENSION = .html
# The HTML_HEADER tag can be used to specify a personal HTML header for
# each generated HTML page. If it is left blank doxygen will generate a
# standard header.
#HTML_HEADER = doc/doxy/header.html
# The HTML_FOOTER tag can be used to specify a personal HTML footer for
# each generated HTML page. If it is left blank doxygen will generate a
# standard footer.
#HTML_FOOTER = doc/doxy/footer.html
# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
# style sheet that is used by each HTML page. It can be used to
# fine-tune the look of the HTML output. If the tag is left blank doxygen
# will generate a default style sheet. Note that doxygen will try to copy
# the style sheet file to the HTML output directory, so don't put your own
# stylesheet in the HTML output directory as well, or it will be erased!
#HTML_STYLESHEET = doc/doxy/doxy_stylesheet.css
# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output.
# Doxygen will adjust the colors in the stylesheet and background images
# according to this color. Hue is specified as an angle on a colorwheel,
# see http://en.wikipedia.org/wiki/Hue for more information.
# For instance the value 0 represents red, 60 is yellow, 120 is green,
# 180 is cyan, 240 is blue, 300 purple, and 360 is red again.
# The allowed range is 0 to 359.
#HTML_COLORSTYLE_HUE = 120
# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of
# the colors in the HTML output. For a value of 0 the output will use
# grayscales only. A value of 255 will produce the most vivid colors.
HTML_COLORSTYLE_SAT = 100
# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to
# the luminance component of the colors in the HTML output. Values below
# 100 gradually make the output lighter, whereas values above 100 make
# the output darker. The value divided by 100 is the actual gamma applied,
# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2,
# and 100 does not change the gamma.
HTML_COLORSTYLE_GAMMA = 80
# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
# page will contain the date and time when the page was generated. Setting
# this to NO can help when comparing the output of multiple runs.
HTML_TIMESTAMP = YES
# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
# documentation will contain sections that can be hidden and shown after the
# page has loaded. For this to work a browser that supports
# JavaScript and DHTML is required (for instance Mozilla 1.0+, Firefox
# Netscape 6.0+, Internet explorer 5.0+, Konqueror, or Safari).
HTML_DYNAMIC_SECTIONS = NO
# If the GENERATE_DOCSET tag is set to YES, additional index files
# will be generated that can be used as input for Apple's Xcode 3
# integrated development environment, introduced with OS X 10.5 (Leopard).
# To create a documentation set, doxygen will generate a Makefile in the
# HTML output directory. Running make will produce the docset in that
# directory and running "make install" will install the docset in
# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find
# it at startup.
# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
# for more information.
GENERATE_DOCSET = NO
# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the
# feed. A documentation feed provides an umbrella under which multiple
# documentation sets from a single provider (such as a company or product suite)
# can be grouped.
DOCSET_FEEDNAME = "Doxygen generated docs"
# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that
# should uniquely identify the documentation set bundle. This should be a
# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen
# will append .docset to the name.
DOCSET_BUNDLE_ID = org.doxygen.Project
# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely identify
# the documentation publisher. This should be a reverse domain-name style
# string, e.g. com.mycompany.MyDocSet.documentation.
DOCSET_PUBLISHER_ID = org.doxygen.Publisher
# The GENERATE_PUBLISHER_NAME tag identifies the documentation publisher.
DOCSET_PUBLISHER_NAME = Publisher
# If the GENERATE_HTMLHELP tag is set to YES, additional index files
# will be generated that can be used as input for tools like the
# Microsoft HTML help workshop to generate a compiled HTML help file (.chm)
# of the generated HTML documentation.
GENERATE_HTMLHELP = NO
# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
# be used to specify the file name of the resulting .chm file. You
# can add a path in front of the file if the result should not be
# written to the html output directory.
CHM_FILE =
# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
# be used to specify the location (absolute path including file name) of
# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
# the HTML help compiler on the generated index.hhp.
HHC_LOCATION =
# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
# controls if a separate .chi index file is generated (YES) or that
# it should be included in the master .chm file (NO).
GENERATE_CHI = NO
# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING
# is used to encode HtmlHelp index (hhk), content (hhc) and project file
# content.
CHM_INDEX_ENCODING =
# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
# controls whether a binary table of contents is generated (YES) or a
# normal table of contents (NO) in the .chm file.
BINARY_TOC = NO
# The TOC_EXPAND flag can be set to YES to add extra items for group members
# to the contents of the HTML help documentation and to the tree view.
TOC_EXPAND = NO
# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated
# that can be used as input for Qt's qhelpgenerator to generate a
# Qt Compressed Help (.qch) of the generated HTML documentation.
GENERATE_QHP = NO
# If the QHG_LOCATION tag is specified, the QCH_FILE tag can
# be used to specify the file name of the resulting .qch file.
# The path specified is relative to the HTML output folder.
QCH_FILE =
# The QHP_NAMESPACE tag specifies the namespace to use when generating
# Qt Help Project output. For more information please see
# http://doc.trolltech.com/qthelpproject.html#namespace
QHP_NAMESPACE = org.doxygen.Project
# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating
# Qt Help Project output. For more information please see
# http://doc.trolltech.com/qthelpproject.html#virtual-folders
QHP_VIRTUAL_FOLDER = doc
# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to
# add. For more information please see
# http://doc.trolltech.com/qthelpproject.html#custom-filters
QHP_CUST_FILTER_NAME =
# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the
# custom filter to add. For more information please see
# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">
# Qt Help Project / Custom Filters</a>.
QHP_CUST_FILTER_ATTRS =
# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
# project's
# filter section matches.
# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">
# Qt Help Project / Filter Attributes</a>.
QHP_SECT_FILTER_ATTRS =
# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can
# be used to specify the location of Qt's qhelpgenerator.
# If non-empty doxygen will try to run qhelpgenerator on the generated
# .qhp file.
QHG_LOCATION =
# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files
# will be generated, which together with the HTML files, form an Eclipse help
# plugin. To install this plugin and make it available under the help contents
# menu in Eclipse, the contents of the directory containing the HTML and XML
# files needs to be copied into the plugins directory of eclipse. The name of
# the directory within the plugins directory should be the same as
# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before
# the help appears.
GENERATE_ECLIPSEHELP = NO
# A unique identifier for the eclipse help plugin. When installing the plugin
# the directory name containing the HTML and XML files should also have
# this name.
ECLIPSE_DOC_ID = org.doxygen.Project
# The DISABLE_INDEX tag can be used to turn on/off the condensed index at
# top of each HTML page. The value NO (the default) enables the index and
# the value YES disables it.
DISABLE_INDEX = NO
# This tag can be used to set the number of enum values (range [1..20])
# that doxygen will group on one line in the generated HTML documentation.
ENUM_VALUES_PER_LINE = 4
# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
# structure should be generated to display hierarchical information.
# If the tag value is set to YES, a side panel will be generated
# containing a tree-like index structure (just like the one that
# is generated for HTML Help). For this to work a browser that supports
# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser).
# Windows users are probably better off using the HTML help feature.
GENERATE_TREEVIEW = NO
# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
# used to set the initial width (in pixels) of the frame in which the tree
# is shown.
TREEVIEW_WIDTH = 250
# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open
# links to external symbols imported via tag files in a separate window.
EXT_LINKS_IN_WINDOW = NO
# Use this tag to change the font size of Latex formulas included
# as images in the HTML documentation. The default is 10. Note that
# when you change the font size after a successful doxygen run you need
# to manually remove any form_*.png images from the HTML output directory
# to force them to be regenerated.
FORMULA_FONTSIZE = 10
# Use the FORMULA_TRANPARENT tag to determine whether or not the images
# generated for formulas are transparent PNGs. Transparent PNGs are
# not supported properly for IE 6.0, but are supported on all modern browsers.
# Note that when changing this option you need to delete any form_*.png files
# in the HTML output before the changes have effect.
FORMULA_TRANSPARENT = YES
# When the SEARCHENGINE tag is enabled doxygen will generate a search box
# for the HTML output. The underlying search engine uses javascript
# and DHTML and should work on any modern browser. Note that when using
# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets
# (GENERATE_DOCSET) there is already a search function so this one should
# typically be disabled. For large projects the javascript based search engine
# can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.
SEARCHENGINE = NO
# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
# implemented using a PHP enabled web server instead of at the web client
# using Javascript. Doxygen will generate the search PHP script and index
# file to put on the web server. The advantage of the server
# based approach is that it scales better to large projects and allows
# full text search. The disadvances is that it is more difficult to setup
# and does not have live searching capabilities.
SERVER_BASED_SEARCH = NO
#---------------------------------------------------------------------------
# configuration options related to the LaTeX output
#---------------------------------------------------------------------------
# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
# generate Latex output.
GENERATE_LATEX = NO
# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be
# put in front of it. If left blank `latex' will be used as the default path.
LATEX_OUTPUT = latex
# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
# invoked. If left blank `latex' will be used as the default command name.
# Note that when enabling USE_PDFLATEX this option is only used for
# generating bitmaps for formulas in the HTML output, but not in the
# Makefile that is written to the output directory.
LATEX_CMD_NAME = latex
# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
# generate index for LaTeX. If left blank `makeindex' will be used as the
# default command name.
MAKEINDEX_CMD_NAME = makeindex
# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
# LaTeX documents. This may be useful for small projects and may help to
# save some trees in general.
COMPACT_LATEX = NO
# The PAPER_TYPE tag can be used to set the paper type that is used
# by the printer. Possible values are: a4, a4wide, letter, legal and
# executive. If left blank a4wide will be used.
PAPER_TYPE = a4wide
# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
# packages that should be included in the LaTeX output.
EXTRA_PACKAGES =
# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
# the generated latex document. The header should contain everything until
# the first chapter. If it is left blank doxygen will generate a
# standard header. Notice: only use this tag if you know what you are doing!
LATEX_HEADER =
# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
# is prepared for conversion to pdf (using ps2pdf). The pdf file will
# contain links (just like the HTML output) instead of page references
# This makes the output suitable for online browsing using a pdf viewer.
PDF_HYPERLINKS = NO
# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
# plain latex in the generated Makefile. Set this option to YES to get a
# higher quality PDF documentation.
USE_PDFLATEX = NO
# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
# command to the generated LaTeX files. This will instruct LaTeX to keep
# running if errors occur, instead of asking the user for help.
# This option is also used when generating formulas in HTML.
LATEX_BATCHMODE = NO
# If LATEX_HIDE_INDICES is set to YES then doxygen will not
# include the index chapters (such as File Index, Compound Index, etc.)
# in the output.
LATEX_HIDE_INDICES = NO
# If LATEX_SOURCE_CODE is set to YES then doxygen will include
# source code with syntax highlighting in the LaTeX output.
# Note that which sources are shown also depends on other settings
# such as SOURCE_BROWSER.
LATEX_SOURCE_CODE = NO
#---------------------------------------------------------------------------
# configuration options related to the RTF output
#---------------------------------------------------------------------------
# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
# The RTF output is optimized for Word 97 and may not look very pretty with
# other RTF readers or editors.
GENERATE_RTF = NO
# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be
# put in front of it. If left blank `rtf' will be used as the default path.
RTF_OUTPUT = rtf
# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
# RTF documents. This may be useful for small projects and may help to
# save some trees in general.
COMPACT_RTF = NO
# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
# will contain hyperlink fields. The RTF file will
# contain links (just like the HTML output) instead of page references.
# This makes the output suitable for online browsing using WORD or other
# programs which support those fields.
# Note: wordpad (write) and others do not support links.
RTF_HYPERLINKS = NO
# Load stylesheet definitions from file. Syntax is similar to doxygen's
# config file, i.e. a series of assignments. You only have to provide
# replacements, missing definitions are set to their default value.
RTF_STYLESHEET_FILE =
# Set optional variables used in the generation of an rtf document.
# Syntax is similar to doxygen's config file.
RTF_EXTENSIONS_FILE =
#---------------------------------------------------------------------------
# configuration options related to the man page output
#---------------------------------------------------------------------------
# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
# generate man pages
GENERATE_MAN = NO
# The MAN_OUTPUT tag is used to specify where the man pages will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be
# put in front of it. If left blank `man' will be used as the default path.
MAN_OUTPUT = man
# The MAN_EXTENSION tag determines the extension that is added to
# the generated man pages (default is the subroutine's section .3)
MAN_EXTENSION = .3
# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
# then it will generate one additional man file for each entity
# documented in the real man page(s). These additional files
# only source the real man page, but without them the man command
# would be unable to find the correct page. The default is NO.
MAN_LINKS = NO
#---------------------------------------------------------------------------
# configuration options related to the XML output
#---------------------------------------------------------------------------
# If the GENERATE_XML tag is set to YES Doxygen will
# generate an XML file that captures the structure of
# the code including all documentation.
GENERATE_XML = NO
# The XML_OUTPUT tag is used to specify where the XML pages will be put.
# If a relative path is entered the value of OUTPUT_DIRECTORY will be
# put in front of it. If left blank `xml' will be used as the default path.
XML_OUTPUT = xml
# The XML_SCHEMA tag can be used to specify an XML schema,
# which can be used by a validating XML parser to check the
# syntax of the XML files.
XML_SCHEMA =
# The XML_DTD tag can be used to specify an XML DTD,
# which can be used by a validating XML parser to check the
# syntax of the XML files.
XML_DTD =
# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
# dump the program listings (including syntax highlighting
# and cross-referencing information) to the XML output. Note that
# enabling this will significantly increase the size of the XML output.
XML_PROGRAMLISTING = YES
#---------------------------------------------------------------------------
# configuration options for the AutoGen Definitions output
#---------------------------------------------------------------------------
# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
# generate an AutoGen Definitions (see autogen.sf.net) file
# that captures the structure of the code including all
# documentation. Note that this feature is still experimental
# and incomplete at the moment.
GENERATE_AUTOGEN_DEF = NO
#---------------------------------------------------------------------------
# configuration options related to the Perl module output
#---------------------------------------------------------------------------
# If the GENERATE_PERLMOD tag is set to YES Doxygen will
# generate a Perl module file that captures the structure of
# the code including all documentation. Note that this
# feature is still experimental and incomplete at the
# moment.
GENERATE_PERLMOD = NO
# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
# the necessary Makefile rules, Perl scripts and LaTeX code to be able
# to generate PDF and DVI output from the Perl module output.
PERLMOD_LATEX = NO
# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
# nicely formatted so it can be parsed by a human reader.
# This is useful
# if you want to understand what is going on.
# On the other hand, if this
# tag is set to NO the size of the Perl module output will be much smaller
# and Perl will parse it just the same.
PERLMOD_PRETTY = YES
# The names of the make variables in the generated doxyrules.make file
# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
# This is useful so different doxyrules.make files included by the same
# Makefile don't overwrite each other's variables.
PERLMOD_MAKEVAR_PREFIX =
#---------------------------------------------------------------------------
# Configuration options related to the preprocessor
#---------------------------------------------------------------------------
# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
# evaluate all C-preprocessor directives found in the sources and include
# files.
ENABLE_PREPROCESSING = YES
# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
# names in the source code. If set to NO (the default) only conditional
# compilation will be performed. Macro expansion can be done in a controlled
# way by setting EXPAND_ONLY_PREDEF to YES.
MACRO_EXPANSION = YES
# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
# then the macro expansion is limited to the macros specified with the
# PREDEFINED and EXPAND_AS_DEFINED tags.
EXPAND_ONLY_PREDEF = YES
# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
# in the INCLUDE_PATH (see below) will be search if a #include is found.
SEARCH_INCLUDES = YES
# The INCLUDE_PATH tag can be used to specify one or more directories that
# contain include files that are not input files but should be processed by
# the preprocessor.
INCLUDE_PATH =
# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
# patterns (like *.h and *.hpp) to filter out the header-files in the
# directories. If left blank, the patterns specified with FILE_PATTERNS will
# be used.
INCLUDE_FILE_PATTERNS =
# The PREDEFINED tag can be used to specify one or more macro names that
# are defined before the preprocessor is started (similar to the -D option of
# gcc). The argument of the tag is a list of macros of the form: name
# or name=definition (no spaces). If the definition and the = are
# omitted =1 is assumed. To prevent a macro definition from being
# undefined via #undef or recursively expanded use the := operator
# instead of the = operator.
PREDEFINED = "__attribute__(x)=" \
"DECLARE_ALIGNED(a,t,n)=t n" \
"offsetof(x,y)=0x42" \
av_alloc_size \
# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
# this tag can be used to specify a list of macro names that should be expanded.
# The macro definition that is found in the sources will be used.
# Use the PREDEFINED tag if you want to use a different macro definition.
EXPAND_AS_DEFINED = declare_idct \
READ_PAR_DATA \
# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
# doxygen's preprocessor will remove all function-like macros that are alone
# on a line, have an all uppercase name, and do not end with a semicolon. Such
# function macros are typically used for boiler-plate code, and will confuse
# the parser if not removed.
SKIP_FUNCTION_MACROS = YES
#---------------------------------------------------------------------------
# Configuration::additions related to external references
#---------------------------------------------------------------------------
# The TAGFILES option can be used to specify one or more tagfiles.
# Optionally an initial location of the external documentation
# can be added for each tagfile. The format of a tag file without
# this location is as follows:
#
# TAGFILES = file1 file2 ...
# Adding location for the tag files is done as follows:
#
# TAGFILES = file1=loc1 "file2 = loc2" ...
# where "loc1" and "loc2" can be relative or absolute paths or
# URLs. If a location is present for each tag, the installdox tool
# does not have to be run to correct the links.
# Note that each tag file must have a unique name
# (where the name does NOT include the path)
# If a tag file is not located in the directory in which doxygen
# is run, you must also specify the path to the tagfile here.
TAGFILES =
# When a file name is specified after GENERATE_TAGFILE, doxygen will create
# a tag file that is based on the input files it reads.
GENERATE_TAGFILE =
# If the ALLEXTERNALS tag is set to YES all external classes will be listed
# in the class index. If set to NO only the inherited external classes
# will be listed.
ALLEXTERNALS = NO
# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
# in the modules index. If set to NO, only the current project's groups will
# be listed.
EXTERNAL_GROUPS = YES
# The PERL_PATH should be the absolute path and name of the perl script
# interpreter (i.e. the result of `which perl').
PERL_PATH = /usr/bin/perl
#---------------------------------------------------------------------------
# Configuration options related to the dot tool
#---------------------------------------------------------------------------
# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
# or super classes. Setting the tag to NO turns the diagrams off. Note that
# this option is superseded by the HAVE_DOT option below. This is only a
# fallback. It is recommended to install and use dot, since it yields more
# powerful graphs.
CLASS_DIAGRAMS = YES
# You can define message sequence charts within doxygen comments using the \msc
# command. Doxygen will then run the mscgen tool (see
# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the
# documentation. The MSCGEN_PATH tag allows you to specify the directory where
# the mscgen tool resides. If left empty the tool is assumed to be found in the
# default search path.
MSCGEN_PATH =
# If set to YES, the inheritance and collaboration graphs will hide
# inheritance and usage relations if the target is undocumented
# or is not a class.
HIDE_UNDOC_RELATIONS = YES
# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
# available from the path. This tool is part of Graphviz, a graph visualization
# toolkit from AT&T and Lucent Bell Labs. The other options in this section
# have no effect if this option is set to NO (the default)
HAVE_DOT = NO
# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is
# allowed to run in parallel. When set to 0 (the default) doxygen will
# base this on the number of processors available in the system. You can set it
# explicitly to a value larger than 0 to get control over the balance
# between CPU load and processing speed.
DOT_NUM_THREADS = 0
# By default doxygen will write a font called FreeSans.ttf to the output
# directory and reference it in all dot files that doxygen generates. This
# font does not include all possible unicode characters however, so when you need
# these (or just want a differently looking font) you can specify the font name
# using DOT_FONTNAME. You need need to make sure dot is able to find the font,
# which can be done by putting it in a standard location or by setting the
# DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory
# containing the font.
DOT_FONTNAME = FreeSans
# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs.
# The default size is 10pt.
DOT_FONTSIZE = 10
# By default doxygen will tell dot to use the output directory to look for the
# FreeSans.ttf font (which doxygen will put there itself). If you specify a
# different font using DOT_FONTNAME you can set the path where dot
# can find it using this tag.
DOT_FONTPATH =
# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
# will generate a graph for each documented class showing the direct and
# indirect inheritance relations. Setting this tag to YES will force the
# the CLASS_DIAGRAMS tag to NO.
CLASS_GRAPH = YES
# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
# will generate a graph for each documented class showing the direct and
# indirect implementation dependencies (inheritance, containment, and
# class references variables) of the class with other documented classes.
COLLABORATION_GRAPH = YES
# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
# will generate a graph for groups, showing the direct groups dependencies
GROUP_GRAPHS = YES
# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
# collaboration diagrams in a style similar to the OMG's Unified Modeling
# Language.
UML_LOOK = NO
# If set to YES, the inheritance and collaboration graphs will show the
# relations between templates and their instances.
TEMPLATE_RELATIONS = YES
# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
# tags are set to YES then doxygen will generate a graph for each documented
# file showing the direct and indirect include dependencies of the file with
# other documented files.
INCLUDE_GRAPH = YES
# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
# documented header file showing the documented files that directly or
# indirectly include this file.
INCLUDED_BY_GRAPH = YES
# If the CALL_GRAPH and HAVE_DOT options are set to YES then
# doxygen will generate a call dependency graph for every global function
# or class method. Note that enabling this option will significantly increase
# the time of a run. So in most cases it will be better to enable call graphs
# for selected functions only using the \callgraph command.
CALL_GRAPH = NO
# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then
# doxygen will generate a caller dependency graph for every global function
# or class method. Note that enabling this option will significantly increase
# the time of a run. So in most cases it will be better to enable caller
# graphs for selected functions only using the \callergraph command.
CALLER_GRAPH = NO
# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
# will graphical hierarchy of all classes instead of a textual one.
GRAPHICAL_HIERARCHY = YES
# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES
# then doxygen will show the dependencies a directory has on other directories
# in a graphical way. The dependency relations are determined by the #include
# relations between the files in the directories.
DIRECTORY_GRAPH = YES
# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
# generated by dot. Possible values are png, jpg, or gif
# If left blank png will be used.
DOT_IMAGE_FORMAT = png
# The tag DOT_PATH can be used to specify the path where the dot tool can be
# found. If left blank, it is assumed the dot tool can be found in the path.
DOT_PATH =
# The DOTFILE_DIRS tag can be used to specify one or more directories that
# contain dot files that are included in the documentation (see the
# \dotfile command).
DOTFILE_DIRS =
# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of
# nodes that will be shown in the graph. If the number of nodes in a graph
# becomes larger than this value, doxygen will truncate the graph, which is
# visualized by representing a node as a red box. Note that doxygen if the
# number of direct children of the root node in a graph is already larger than
# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note
# that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
DOT_GRAPH_MAX_NODES = 50
# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
# graphs generated by dot. A depth value of 3 means that only nodes reachable
# from the root by following a path via at most 3 edges will be shown. Nodes
# that lay further from the root node will be omitted. Note that setting this
# option to 1 or 2 may greatly reduce the computation time needed for large
# code bases. Also note that the size of a graph can be further restricted by
# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
MAX_DOT_GRAPH_DEPTH = 0
# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
# background. This is disabled by default, because dot on Windows does not
# seem to support this out of the box. Warning: Depending on the platform used,
# enabling this option may lead to badly anti-aliased labels on the edges of
# a graph (i.e. they become hard to read).
DOT_TRANSPARENT = YES
# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
# files in one run (i.e. multiple -o and -T options on the command line). This
# makes dot run faster, but since only newer versions of dot (>1.8.10)
# support this, this feature is disabled by default.
DOT_MULTI_TARGETS = NO
# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
# generate a legend page explaining the meaning of the various boxes and
# arrows in the dot generated graphs.
GENERATE_LEGEND = YES
# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
# remove the intermediate dot files that are used to generate
# the various graphs.
DOT_CLEANUP = YES

/contrib/sdk/sources/ffmpeg/doc/Makefile
0,0 → 1,137
LIBRARIES-$(CONFIG_AVUTIL) += libavutil
LIBRARIES-$(CONFIG_SWSCALE) += libswscale
LIBRARIES-$(CONFIG_SWRESAMPLE) += libswresample
LIBRARIES-$(CONFIG_AVCODEC) += libavcodec
LIBRARIES-$(CONFIG_AVFORMAT) += libavformat
LIBRARIES-$(CONFIG_AVDEVICE) += libavdevice
LIBRARIES-$(CONFIG_AVFILTER) += libavfilter
COMPONENTS-$(CONFIG_AVUTIL) += ffmpeg-utils
COMPONENTS-$(CONFIG_SWSCALE) += ffmpeg-scaler
COMPONENTS-$(CONFIG_SWRESAMPLE) += ffmpeg-resampler
COMPONENTS-$(CONFIG_AVCODEC) += ffmpeg-codecs ffmpeg-bitstream-filters
COMPONENTS-$(CONFIG_AVFORMAT) += ffmpeg-formats ffmpeg-protocols
COMPONENTS-$(CONFIG_AVDEVICE) += ffmpeg-devices
COMPONENTS-$(CONFIG_AVFILTER) += ffmpeg-filters
MANPAGES1 = $(PROGS-yes:%=doc/%.1) $(PROGS-yes:%=doc/%-all.1) $(COMPONENTS-yes:%=doc/%.1)
MANPAGES3 = $(LIBRARIES-yes:%=doc/%.3)
MANPAGES = $(MANPAGES1) $(MANPAGES3)
PODPAGES = $(PROGS-yes:%=doc/%.pod) $(PROGS-yes:%=doc/%-all.pod) $(COMPONENTS-yes:%=doc/%.pod) $(LIBRARIES-yes:%=doc/%.pod)
HTMLPAGES = $(PROGS-yes:%=doc/%.html) $(PROGS-yes:%=doc/%-all.html) $(COMPONENTS-yes:%=doc/%.html) $(LIBRARIES-yes:%=doc/%.html) \
doc/developer.html \
doc/faq.html \
doc/fate.html \
doc/general.html \
doc/git-howto.html \
doc/nut.html \
doc/platform.html \
TXTPAGES = doc/fate.txt \
DOCS-$(CONFIG_HTMLPAGES) += $(HTMLPAGES)
DOCS-$(CONFIG_PODPAGES) += $(PODPAGES)
DOCS-$(CONFIG_MANPAGES) += $(MANPAGES)
DOCS-$(CONFIG_TXTPAGES) += $(TXTPAGES)
DOCS = $(DOCS-yes)
all-$(CONFIG_DOC): doc
doc: documentation
apidoc: doc/doxy/html
documentation: $(DOCS)
TEXIDEP = awk '/^@(verbatim)?include/ { printf "$@: $(@D)/%s\n", $$2 }' <$< >$(@:%=%.d)
doc/%.txt: TAG = TXT
doc/%.txt: doc/%.texi
$(Q)$(TEXIDEP)
$(M)makeinfo --force --no-headers -o $@ $< 2>/dev/null
GENTEXI = format codec
GENTEXI := $(GENTEXI:%=doc/avoptions_%.texi)
$(GENTEXI): TAG = GENTEXI
$(GENTEXI): doc/avoptions_%.texi: doc/print_options$(HOSTEXESUF)
$(M)doc/print_options $* > $@
doc/%.html: TAG = HTML
doc/%.html: doc/%.texi $(SRC_PATH)/doc/t2h.init $(GENTEXI)
$(Q)$(TEXIDEP)
$(M)texi2html -I doc -monolithic --D=config-not-all --init-file $(SRC_PATH)/doc/t2h.init --output $@ $<
doc/%-all.html: TAG = HTML
doc/%-all.html: doc/%.texi $(SRC_PATH)/doc/t2h.init $(GENTEXI)
$(Q)$(TEXIDEP)
$(M)texi2html -I doc -monolithic --D=config-all --init-file $(SRC_PATH)/doc/t2h.init --output $@ $<
doc/%.pod: TAG = POD
doc/%.pod: doc/%.texi $(SRC_PATH)/doc/texi2pod.pl $(GENTEXI)
$(Q)$(TEXIDEP)
$(M)perl $(SRC_PATH)/doc/texi2pod.pl -Dconfig-not-all=yes -Idoc $< $@
doc/%-all.pod: TAG = POD
doc/%-all.pod: doc/%.texi $(SRC_PATH)/doc/texi2pod.pl $(GENTEXI)
$(Q)$(TEXIDEP)
$(M)perl $(SRC_PATH)/doc/texi2pod.pl -Dconfig-all=yes -Idoc $< $@
doc/%.1 doc/%.3: TAG = MAN
doc/%.1: doc/%.pod $(GENTEXI)
$(M)pod2man --section=1 --center=" " --release=" " $< > $@
doc/%.3: doc/%.pod $(GENTEXI)
$(M)pod2man --section=3 --center=" " --release=" " $< > $@
$(DOCS) doc/doxy/html: | doc/
doc/doxy/html: $(SRC_PATH)/doc/Doxyfile $(INSTHEADERS)
$(M)$(SRC_PATH)/doc/doxy-wrapper.sh $(SRC_PATH) $^
install-doc: install-html install-man
install-html:
install-man:
ifdef CONFIG_HTMLPAGES
install-progs-$(CONFIG_DOC): install-html
install-html: $(HTMLPAGES)
$(Q)mkdir -p "$(DOCDIR)"
$(INSTALL) -m 644 $(HTMLPAGES) "$(DOCDIR)"
endif
ifdef CONFIG_MANPAGES
install-progs-$(CONFIG_DOC): install-man
install-man: $(MANPAGES)
$(Q)mkdir -p "$(MANDIR)/man1"
$(INSTALL) -m 644 $(MANPAGES1) "$(MANDIR)/man1"
$(Q)mkdir -p "$(MANDIR)/man3"
$(INSTALL) -m 644 $(MANPAGES3) "$(MANDIR)/man3"
endif
uninstall: uninstall-doc
uninstall-doc: uninstall-html uninstall-man
uninstall-html:
$(RM) -r "$(DOCDIR)"
uninstall-man:
$(RM) $(addprefix "$(MANDIR)/man1/",$(PROGS-yes:%=%.1) $(PROGS-yes:%=%-all.1) $(COMPONENTS-yes:%=%.1))
$(RM) $(addprefix "$(MANDIR)/man3/",$(LIBRARIES-yes:%=%.3))
clean:: docclean
distclean:: docclean
$(RM) doc/config.texi
docclean:
$(RM) $(TXTPAGES) doc/*.html doc/*.pod doc/*.1 doc/*.3 $(CLEANSUFFIXES:%=doc/%) doc/avoptions_*.texi
$(RM) -r doc/doxy/html
-include $(wildcard $(DOCS:%=%.d))
.PHONY: apidoc doc documentation

/contrib/sdk/sources/ffmpeg/doc/RELEASE_NOTES
0,0 → 1,16
Release Notes
=============
* 2.1 "Fourier" October, 2013
General notes
-------------
See the Changelog file for a list of significant changes. Note, there
are many more new features and bugfixes than whats listed there.
Bugreports against FFmpeg git master or the most recent FFmpeg release are
accepted. If you are experiencing issues with any formally released version of
FFmpeg, please try git master to check if the issue still exists. If it does,
make your report against the development code following the usual bug reporting
guidelines.

/contrib/sdk/sources/ffmpeg/doc/authors.texi
0,0 → 1,11
@chapter Authors
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
@command{git log} in the FFmpeg source directory, or browsing the
online repository at @url{http://source.ffmpeg.org}.
Maintainers for the specific components are listed in the file
@file{MAINTAINERS} in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/avoptions_codec.texi
0,0 → 1,876
@c DO NOT EDIT THIS FILE!
@c It was generated by print_options.
@section Codec AVOptions
@table @option
@item -b[:stream_specifier] @var{integer} (@emph{output,audio,video})
set bitrate (in bits/s)
@item -ab[:stream_specifier] @var{integer} (@emph{output,audio})
set bitrate (in bits/s)
@item -bt[:stream_specifier] @var{integer} (@emph{output,video})
Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality.
@item -flags[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
Possible values:
@table @samp
@item unaligned
allow decoders to produce unaligned output
@item mv4
use four motion vectors per macroblock (MPEG-4)
@item qpel
use 1/4-pel motion compensation
@item loop
use loop filter
@item qscale
use fixed qscale
@item gmc
use gmc
@item mv0
always try a mb with mv=<0,0>
@item input_preserved
@item pass1
use internal 2-pass ratecontrol in first pass mode
@item pass2
use internal 2-pass ratecontrol in second pass mode
@item gray
only decode/encode grayscale
@item emu_edge
do not draw edges
@item psnr
error[?] variables will be set during encoding
@item truncated
@item naq
normalize adaptive quantization
@item ildct
use interlaced DCT
@item low_delay
force low delay
@item global_header
place global headers in extradata instead of every keyframe
@item bitexact
use only bitexact functions (except (I)DCT)
@item aic
H.263 advanced intra coding / MPEG-4 AC prediction
@item ilme
interlaced motion estimation
@item cgop
closed GOP
@end table
@item -me_method[:stream_specifier] @var{integer} (@emph{output,video})
set motion estimation method
Possible values:
@table @samp
@item zero
zero motion estimation (fastest)
@item full
full motion estimation (slowest)
@item epzs
EPZS motion estimation (default)
@item esa
esa motion estimation (alias for full)
@item tesa
tesa motion estimation
@item dia
diamond motion estimation (alias for EPZS)
@item log
log motion estimation
@item phods
phods motion estimation
@item x1
X1 motion estimation
@item hex
hex motion estimation
@item umh
umh motion estimation
@item iter
iter motion estimation
@end table
@item -g[:stream_specifier] @var{integer} (@emph{output,video})
set the group of picture (GOP) size
@item -ar[:stream_specifier] @var{integer} (@emph{input/output,audio})
set audio sampling rate (in Hz)
@item -ac[:stream_specifier] @var{integer} (@emph{input/output,audio})
set number of audio channels
@item -cutoff[:stream_specifier] @var{integer} (@emph{output,audio})
set cutoff bandwidth
@item -frame_size[:stream_specifier] @var{integer} (@emph{output,audio})
@item -qcomp[:stream_specifier] @var{float} (@emph{output,video})
video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
@item -qblur[:stream_specifier] @var{float} (@emph{output,video})
video quantizer scale blur (VBR)
@item -qmin[:stream_specifier] @var{integer} (@emph{output,video})
minimum video quantizer scale (VBR)
@item -qmax[:stream_specifier] @var{integer} (@emph{output,video})
maximum video quantizer scale (VBR)
@item -qdiff[:stream_specifier] @var{integer} (@emph{output,video})
maximum difference between the quantizer scales (VBR)
@item -bf[:stream_specifier] @var{integer} (@emph{output,video})
use 'frames' B frames
@item -b_qfactor[:stream_specifier] @var{float} (@emph{output,video})
QP factor between P- and B-frames
@item -rc_strategy[:stream_specifier] @var{integer} (@emph{output,video})
ratecontrol method
@item -b_strategy[:stream_specifier] @var{integer} (@emph{output,video})
strategy to choose between I/P/B-frames
@item -ps[:stream_specifier] @var{integer} (@emph{output,video})
RTP payload size in bytes
@item -bug[:stream_specifier] @var{flags} (@emph{input,video})
work around not autodetected encoder bugs
Possible values:
@table @samp
@item autodetect
@item old_msmpeg4
some old lavc-generated MSMPEG4v3 files (no autodetection)
@item xvid_ilace
Xvid interlacing bug (autodetected if FOURCC == XVIX)
@item ump4
(autodetected if FOURCC == UMP4)
@item no_padding
padding bug (autodetected)
@item amv
@item ac_vlc
illegal VLC bug (autodetected per FOURCC)
@item qpel_chroma
@item std_qpel
old standard qpel (autodetected per FOURCC/version)
@item qpel_chroma2
@item direct_blocksize
direct-qpel-blocksize bug (autodetected per FOURCC/version)
@item edge
edge padding bug (autodetected per FOURCC/version)
@item hpel_chroma
@item dc_clip
@item ms
work around various bugs in Microsoft's broken decoders
@item trunc
truncated frames
@end table
@item -strict[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
how strictly to follow the standards
Possible values:
@table @samp
@item very
strictly conform to a older more strict version of the spec or reference software
@item strict
strictly conform to all the things in the spec no matter what the consequences
@item normal
@item unofficial
allow unofficial extensions
@item experimental
allow non-standardized experimental things
@end table
@item -b_qoffset[:stream_specifier] @var{float} (@emph{output,video})
QP offset between P- and B-frames
@item -err_detect[:stream_specifier] @var{flags} (@emph{input,audio,video})
set error detection flags
Possible values:
@table @samp
@item crccheck
verify embedded CRCs
@item bitstream
detect bitstream specification deviations
@item buffer
detect improper bitstream length
@item explode
abort decoding on minor error detection
@item careful
consider things that violate the spec, are fast to check and have not been seen in the wild as errors
@item compliant
consider all spec non compliancies as errors
@item aggressive
consider things that a sane encoder should not do as an error
@end table
@item -mpeg_quant[:stream_specifier] @var{integer} (@emph{output,video})
use MPEG quantizers instead of H.263
@item -qsquish[:stream_specifier] @var{float} (@emph{output,video})
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
@item -rc_qmod_amp[:stream_specifier] @var{float} (@emph{output,video})
experimental quantizer modulation
@item -rc_qmod_freq[:stream_specifier] @var{integer} (@emph{output,video})
experimental quantizer modulation
@item -rc_eq[:stream_specifier] @var{string} (@emph{output,video})
Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.
@item -maxrate[:stream_specifier] @var{integer} (@emph{output,audio,video})
Set maximum bitrate tolerance (in bits/s). Requires bufsize to be set.
@item -minrate[:stream_specifier] @var{integer} (@emph{output,audio,video})
Set minimum bitrate tolerance (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise.
@item -bufsize[:stream_specifier] @var{integer} (@emph{output,audio,video})
set ratecontrol buffer size (in bits)
@item -rc_buf_aggressivity[:stream_specifier] @var{float} (@emph{output,video})
currently useless
@item -i_qfactor[:stream_specifier] @var{float} (@emph{output,video})
QP factor between P- and I-frames
@item -i_qoffset[:stream_specifier] @var{float} (@emph{output,video})
QP offset between P- and I-frames
@item -rc_init_cplx[:stream_specifier] @var{float} (@emph{output,video})
initial complexity for 1-pass encoding
@item -dct[:stream_specifier] @var{integer} (@emph{output,video})
DCT algorithm
Possible values:
@table @samp
@item auto
autoselect a good one (default)
@item fastint
fast integer
@item int
accurate integer
@item mmx
@item altivec
@item faan
floating point AAN DCT
@end table
@item -lumi_mask[:stream_specifier] @var{float} (@emph{output,video})
compresses bright areas stronger than medium ones
@item -tcplx_mask[:stream_specifier] @var{float} (@emph{output,video})
temporal complexity masking
@item -scplx_mask[:stream_specifier] @var{float} (@emph{output,video})
spatial complexity masking
@item -p_mask[:stream_specifier] @var{float} (@emph{output,video})
inter masking
@item -dark_mask[:stream_specifier] @var{float} (@emph{output,video})
compresses dark areas stronger than medium ones
@item -idct[:stream_specifier] @var{integer} (@emph{input/output,video})
select IDCT implementation
Possible values:
@table @samp
@item auto
@item int
@item simple
@item simplemmx
@item arm
@item altivec
@item sh4
@item simplearm
@item simplearmv5te
@item simplearmv6
@item simpleneon
@item simplealpha
@item ipp
@item xvidmmx
@item faani
floating point AAN IDCT
@end table
@item -ec[:stream_specifier] @var{flags} (@emph{input,video})
set error concealment strategy
Possible values:
@table @samp
@item guess_mvs
iterative motion vector (MV) search (slow)
@item deblock
use strong deblock filter for damaged MBs
@end table
@item -pred[:stream_specifier] @var{integer} (@emph{output,video})
prediction method
Possible values:
@table @samp
@item left
@item plane
@item median
@end table
@item -aspect[:stream_specifier] @var{rational number} (@emph{output,video})
sample aspect ratio
@item -debug[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
print specific debug info
Possible values:
@table @samp
@item pict
picture info
@item rc
rate control
@item bitstream
@item mb_type
macroblock (MB) type
@item qp
per-block quantization parameter (QP)
@item mv
motion vector
@item dct_coeff
@item skip
@item startcode
@item pts
@item er
error recognition
@item mmco
memory management control operations (H.264)
@item bugs
@item vis_qp
visualize quantization parameter (QP), lower QP are tinted greener
@item vis_mb_type
visualize block types
@item buffers
picture buffer allocations
@item thread_ops
threading operations
@end table
@item -vismv[:stream_specifier] @var{integer} (@emph{input,video})
visualize motion vectors (MVs)
Possible values:
@table @samp
@item pf
forward predicted MVs of P-frames
@item bf
forward predicted MVs of B-frames
@item bb
backward predicted MVs of B-frames
@end table
@item -cmp[:stream_specifier] @var{integer} (@emph{output,video})
full-pel ME compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -subcmp[:stream_specifier] @var{integer} (@emph{output,video})
sub-pel ME compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -mbcmp[:stream_specifier] @var{integer} (@emph{output,video})
macroblock compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -ildctcmp[:stream_specifier] @var{integer} (@emph{output,video})
interlaced DCT compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -dia_size[:stream_specifier] @var{integer} (@emph{output,video})
diamond type & size for motion estimation
@item -last_pred[:stream_specifier] @var{integer} (@emph{output,video})
amount of motion predictors from the previous frame
@item -preme[:stream_specifier] @var{integer} (@emph{output,video})
pre motion estimation
@item -precmp[:stream_specifier] @var{integer} (@emph{output,video})
pre motion estimation compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -pre_dia_size[:stream_specifier] @var{integer} (@emph{output,video})
diamond type & size for motion estimation pre-pass
@item -subq[:stream_specifier] @var{integer} (@emph{output,video})
sub-pel motion estimation quality
@item -me_range[:stream_specifier] @var{integer} (@emph{output,video})
limit motion vectors range (1023 for DivX player)
@item -ibias[:stream_specifier] @var{integer} (@emph{output,video})
intra quant bias
@item -pbias[:stream_specifier] @var{integer} (@emph{output,video})
inter quant bias
@item -global_quality[:stream_specifier] @var{integer} (@emph{output,audio,video})
@item -coder[:stream_specifier] @var{integer} (@emph{output,video})
Possible values:
@table @samp
@item vlc
variable length coder / Huffman coder
@item ac
arithmetic coder
@item raw
raw (no encoding)
@item rle
run-length coder
@item deflate
deflate-based coder
@end table
@item -context[:stream_specifier] @var{integer} (@emph{output,video})
context model
@item -mbd[:stream_specifier] @var{integer} (@emph{output,video})
macroblock decision algorithm (high quality mode)
Possible values:
@table @samp
@item simple
use mbcmp (default)
@item bits
use fewest bits
@item rd
use best rate distortion
@end table
@item -sc_threshold[:stream_specifier] @var{integer} (@emph{output,video})
scene change threshold
@item -lmin[:stream_specifier] @var{integer} (@emph{output,video})
minimum Lagrange factor (VBR)
@item -lmax[:stream_specifier] @var{integer} (@emph{output,video})
maximum Lagrange factor (VBR)
@item -nr[:stream_specifier] @var{integer} (@emph{output,video})
noise reduction
@item -rc_init_occupancy[:stream_specifier] @var{integer} (@emph{output,video})
number of bits which should be loaded into the rc buffer before decoding starts
@item -flags2[:stream_specifier] @var{flags} (@emph{input/output,audio,video})
Possible values:
@table @samp
@item fast
allow non-spec-compliant speedup tricks
@item noout
skip bitstream encoding
@item ignorecrop
ignore cropping information from sps
@item local_header
place global headers at every keyframe instead of in extradata
@item chunks
Frame data might be split into multiple chunks
@item showall
Show all frames before the first keyframe
@end table
@item -error[:stream_specifier] @var{integer} (@emph{output,video})
@item -threads[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
Possible values:
@table @samp
@item auto
autodetect a suitable number of threads to use
@end table
@item -me_threshold[:stream_specifier] @var{integer} (@emph{output,video})
motion estimation threshold
@item -mb_threshold[:stream_specifier] @var{integer} (@emph{output,video})
macroblock threshold
@item -dc[:stream_specifier] @var{integer} (@emph{output,video})
intra_dc_precision
@item -nssew[:stream_specifier] @var{integer} (@emph{output,video})
nsse weight
@item -skip_top[:stream_specifier] @var{integer} (@emph{input,video})
number of macroblock rows at the top which are skipped
@item -skip_bottom[:stream_specifier] @var{integer} (@emph{input,video})
number of macroblock rows at the bottom which are skipped
@item -profile[:stream_specifier] @var{integer} (@emph{output,audio,video})
Possible values:
@table @samp
@item unknown
@item aac_main
@item aac_low
@item aac_ssr
@item aac_ltp
@item aac_he
@item aac_he_v2
@item aac_ld
@item aac_eld
@item mpeg2_aac_low
@item mpeg2_aac_he
@item dts
@item dts_es
@item dts_96_24
@item dts_hd_hra
@item dts_hd_ma
@end table
@item -level[:stream_specifier] @var{integer} (@emph{output,audio,video})
Possible values:
@table @samp
@item unknown
@end table
@item -lowres[:stream_specifier] @var{integer} (@emph{input,audio,video})
decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
@item -skip_threshold[:stream_specifier] @var{integer} (@emph{output,video})
frame skip threshold
@item -skip_factor[:stream_specifier] @var{integer} (@emph{output,video})
frame skip factor
@item -skip_exp[:stream_specifier] @var{integer} (@emph{output,video})
frame skip exponent
@item -skipcmp[:stream_specifier] @var{integer} (@emph{output,video})
frame skip compare function
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item dctmax
@item chroma
@end table
@item -border_mask[:stream_specifier] @var{float} (@emph{output,video})
increase the quantizer for macroblocks close to borders
@item -mblmin[:stream_specifier] @var{integer} (@emph{output,video})
minimum macroblock Lagrange factor (VBR)
@item -mblmax[:stream_specifier] @var{integer} (@emph{output,video})
maximum macroblock Lagrange factor (VBR)
@item -mepc[:stream_specifier] @var{integer} (@emph{output,video})
motion estimation bitrate penalty compensation (1.0 = 256)
@item -skip_loop_filter[:stream_specifier] @var{integer} (@emph{input,video})
skip loop filtering process for the selected frames
Possible values:
@table @samp
@item none
discard no frame
@item default
discard useless frames
@item noref
discard all non-reference frames
@item bidir
discard all bidirectional frames
@item nokey
discard all frames except keyframes
@item all
discard all frames
@end table
@item -skip_idct[:stream_specifier] @var{integer} (@emph{input,video})
skip IDCT/dequantization for the selected frames
Possible values:
@table @samp
@item none
discard no frame
@item default
discard useless frames
@item noref
discard all non-reference frames
@item bidir
discard all bidirectional frames
@item nokey
discard all frames except keyframes
@item all
discard all frames
@end table
@item -skip_frame[:stream_specifier] @var{integer} (@emph{input,video})
skip decoding for the selected frames
Possible values:
@table @samp
@item none
discard no frame
@item default
discard useless frames
@item noref
discard all non-reference frames
@item bidir
discard all bidirectional frames
@item nokey
discard all frames except keyframes
@item all
discard all frames
@end table
@item -bidir_refine[:stream_specifier] @var{integer} (@emph{output,video})
refine the two motion vectors used in bidirectional macroblocks
@item -brd_scale[:stream_specifier] @var{integer} (@emph{output,video})
downscale frames for dynamic B-frame decision
@item -keyint_min[:stream_specifier] @var{integer} (@emph{output,video})
minimum interval between IDR-frames
@item -refs[:stream_specifier] @var{integer} (@emph{output,video})
reference frames to consider for motion compensation
@item -chromaoffset[:stream_specifier] @var{integer} (@emph{output,video})
chroma QP offset from luma
@item -trellis[:stream_specifier] @var{integer} (@emph{output,audio,video})
rate-distortion optimal quantization
@item -sc_factor[:stream_specifier] @var{integer} (@emph{output,video})
multiplied by qscale for each frame and added to scene_change_score
@item -mv0_threshold[:stream_specifier] @var{integer} (@emph{output,video})
@item -b_sensitivity[:stream_specifier] @var{integer} (@emph{output,video})
adjust sensitivity of b_frame_strategy 1
@item -compression_level[:stream_specifier] @var{integer} (@emph{output,audio,video})
@item -min_prediction_order[:stream_specifier] @var{integer} (@emph{output,audio})
@item -max_prediction_order[:stream_specifier] @var{integer} (@emph{output,audio})
@item -timecode_frame_start[:stream_specifier] @var{integer} (@emph{output,video})
GOP timecode frame start number, in non-drop-frame format
@item -request_channels[:stream_specifier] @var{integer} (@emph{input,audio})
set desired number of audio channels
@item -channel_layout[:stream_specifier] @var{integer} (@emph{input/output,audio})
Possible values:
@table @samp
@end table
@item -request_channel_layout[:stream_specifier] @var{integer} (@emph{input,audio})
Possible values:
@table @samp
@end table
@item -rc_max_vbv_use[:stream_specifier] @var{float} (@emph{output,video})
@item -rc_min_vbv_use[:stream_specifier] @var{float} (@emph{output,video})
@item -ticks_per_frame[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
@item -color_primaries[:stream_specifier] @var{integer} (@emph{input/output,video})
@item -color_trc[:stream_specifier] @var{integer} (@emph{input/output,video})
@item -colorspace[:stream_specifier] @var{integer} (@emph{input/output,video})
@item -color_range[:stream_specifier] @var{integer} (@emph{input/output,video})
@item -chroma_sample_location[:stream_specifier] @var{integer} (@emph{input/output,video})
@item -slices[:stream_specifier] @var{integer} (@emph{output,video})
number of slices, used in parallelized encoding
@item -thread_type[:stream_specifier] @var{flags} (@emph{input/output,audio,video})
select multithreading type
Possible values:
@table @samp
@item slice
@item frame
@end table
@item -audio_service_type[:stream_specifier] @var{integer} (@emph{output,audio})
audio service type
Possible values:
@table @samp
@item ma
Main Audio Service
@item ef
Effects
@item vi
Visually Impaired
@item hi
Hearing Impaired
@item di
Dialogue
@item co
Commentary
@item em
Emergency
@item vo
Voice Over
@item ka
Karaoke
@end table
@item -request_sample_fmt[:stream_specifier] @var{value} (@emph{input,audio})
sample format audio decoders should prefer
Possible values:
@table @samp
@end table
@item -sub_charenc[:stream_specifier] @var{string} (@emph{input,subtitles})
set input text subtitles character encoding
@item -sub_charenc_mode[:stream_specifier] @var{flags} (@emph{input,subtitles})
set input text subtitles character encoding mode
Possible values:
@table @samp
@item do_nothing
@item auto
@item pre_decoder
@end table
@item -refcounted_frames[:stream_specifier] @var{integer} (@emph{input,audio,video})
@item -skip_alpha[:stream_specifier] @var{integer} (@emph{input,video})
Skip processing alpha
@item -field_order[:stream_specifier] @var{integer} (@emph{input/output,video})
Field order
Possible values:
@table @samp
@item progressive
@item tt
@item bb
@item tb
@item bt
@end table
@end table

/contrib/sdk/sources/ffmpeg/doc/avoptions_format.texi
0,0 → 1,122
@c DO NOT EDIT THIS FILE!
@c It was generated by print_options.
@section Format AVOptions
@table @option
@item -avioflags @var{flags} (@emph{input/output})
Possible values:
@table @samp
@item direct
reduce buffering
@end table
@item -probesize @var{integer} (@emph{input})
set probing size
@item -packetsize @var{integer} (@emph{output})
set packet size
@item -fflags @var{flags} (@emph{input/output})
Possible values:
@table @samp
@item flush_packets
reduce the latency by flushing out packets immediately
@item ignidx
ignore index
@item genpts
generate pts
@item nofillin
do not fill in missing values that can be exactly calculated
@item noparse
disable AVParsers, this needs nofillin too
@item igndts
ignore dts
@item discardcorrupt
discard corrupted frames
@item sortdts
try to interleave outputted packets by dts
@item keepside
don't merge side data
@item latm
enable RTP MP4A-LATM payload
@item nobuffer
reduce the latency introduced by optional buffering
@end table
@item -seek2any @var{integer} (@emph{input})
allow seeking to non-keyframes on demuxer level when supported
@item -analyzeduration @var{integer} (@emph{input})
specify how many microseconds are analyzed to probe the input
@item -cryptokey @var{hexadecimal string} (@emph{input})
decryption key
@item -indexmem @var{integer} (@emph{input})
max memory used for timestamp index (per stream)
@item -rtbufsize @var{integer} (@emph{input})
max memory used for buffering real-time frames
@item -fdebug @var{flags} (@emph{input/output})
print specific debug info
Possible values:
@table @samp
@item ts
@end table
@item -max_delay @var{integer} (@emph{input/output})
maximum muxing or demuxing delay in microseconds
@item -fpsprobesize @var{integer} (@emph{input})
number of frames used to probe fps
@item -audio_preload @var{integer} (@emph{output})
microseconds by which audio packets should be interleaved earlier
@item -chunk_duration @var{integer} (@emph{output})
microseconds for each chunk
@item -chunk_size @var{integer} (@emph{output})
size in bytes for each chunk
@item -f_err_detect @var{flags} (@emph{input})
set error detection flags (deprecated; use err_detect, save via avconv)
Possible values:
@table @samp
@item crccheck
verify embedded CRCs
@item bitstream
detect bitstream specification deviations
@item buffer
detect improper bitstream length
@item explode
abort decoding on minor error detection
@item careful
consider things that violate the spec, are fast to check and have not been seen in the wild as errors
@item compliant
consider all spec non compliancies as errors
@item aggressive
consider things that a sane encoder shouldn't do as an error
@end table
@item -err_detect @var{flags} (@emph{input})
set error detection flags
Possible values:
@table @samp
@item crccheck
verify embedded CRCs
@item bitstream
detect bitstream specification deviations
@item buffer
detect improper bitstream length
@item explode
abort decoding on minor error detection
@item careful
consider things that violate the spec, are fast to check and have not been seen in the wild as errors
@item compliant
consider all spec non compliancies as errors
@item aggressive
consider things that a sane encoder shouldn't do as an error
@end table
@item -use_wallclock_as_timestamps @var{integer} (@emph{input})
use wallclock as timestamps
@item -avoid_negative_ts @var{integer} (@emph{output})
shift timestamps to make them non-negative. 1 enables, 0 disables, default of -1 enables when required by target format.
@item -skip_initial_bytes @var{integer} (@emph{input})
set number of bytes to skip before reading header and frames
@item -correct_ts_overflow @var{integer} (@emph{input})
correct single timestamp overflows
@item -flush_packets @var{integer} (@emph{output})
enable flushing of the I/O context after each packet
@end table

/contrib/sdk/sources/ffmpeg/doc/avutil.txt
0,0 → 1,36
AVUtil
======
libavutil is a small lightweight library of generally useful functions.
It is not a library for code needed by both libavcodec and libavformat.
Overview:
=========
adler32.c adler32 checksum
aes.c AES encryption and decryption
fifo.c resizeable first in first out buffer
intfloat_readwrite.c portable reading and writing of floating point values
log.c "printf" with context and level
md5.c MD5 Message-Digest Algorithm
rational.c code to perform exact calculations with rational numbers
tree.c generic AVL tree
crc.c generic CRC checksumming code
integer.c 128bit integer math
lls.c
mathematics.c greatest common divisor, integer sqrt, integer log2, ...
mem.c memory allocation routines with guaranteed alignment
Headers:
bswap.h big/little/native-endian conversion code
x86_cpu.h a few useful macros for unifying x86-64 and x86-32 code
avutil.h
common.h
intreadwrite.h reading and writing of unaligned big/little/native-endian integers
Goals:
======
* Modular (few interdependencies and the possibility of disabling individual parts during ./configure)
* Small (source and object)
* Efficient (low CPU and memory usage)
* Useful (avoid useless features almost no one needs)

/contrib/sdk/sources/ffmpeg/doc/bitstream_filters.texi
0,0 → 1,128
@chapter Bitstream Filters
@c man begin BITSTREAM FILTERS
When you configure your FFmpeg build, all the supported bitstream
filters are enabled by default. You can list all available ones using
the configure option @code{--list-bsfs}.
You can disable all the bitstream filters using the configure option
@code{--disable-bsfs}, and selectively enable any bitstream filter using
the option @code{--enable-bsf=BSF}, or you can disable a particular
bitstream filter using the option @code{--disable-bsf=BSF}.
The option @code{-bsfs} of the ff* tools will display the list of
all the supported bitstream filters included in your build.
Below is a description of the currently available bitstream filters.
@section aac_adtstoasc
Convert MPEG-2/4 AAC ADTS to MPEG-4 Audio Specific Configuration
bitstream filter.
This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
ADTS header and removes the ADTS header.
This is required for example when copying an AAC stream from a raw
ADTS AAC container to a FLV or a MOV/MP4 file.
@section chomp
Remove zero padding at the end of a packet.
@section dump_extra
Add extradata to the beginning of the filtered packets.
The additional argument specifies which packets should be filtered.
It accepts the values:
@table @samp
@item a
add extradata to all key packets, but only if @var{local_header} is
set in the @option{flags2} codec context field
@item k
add extradata to all key packets
@item e
add extradata to all packets
@end table
If not specified it is assumed @samp{k}.
For example the following @command{ffmpeg} command forces a global
header (thus disabling individual packet headers) in the H.264 packets
generated by the @code{libx264} encoder, but corrects them by adding
the header stored in extradata to the key packets:
@example
ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
@end example
@section h264_mp4toannexb
Convert an H.264 bitstream from length prefixed mode to start code
prefixed mode (as defined in the Annex B of the ITU-T H.264
specification).
This is required by some streaming formats, typically the MPEG-2
transport stream format ("mpegts").
For example to remux an MP4 file containing an H.264 stream to mpegts
format with @command{ffmpeg}, you can use the command:
@example
ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
@end example
@section imx_dump_header
@section mjpeg2jpeg
Convert MJPEG/AVI1 packets to full JPEG/JFIF packets.
MJPEG is a video codec wherein each video frame is essentially a
JPEG image. The individual frames can be extracted without loss,
e.g. by
@example
ffmpeg -i ../some_mjpeg.avi -c:v copy frames_%d.jpg
@end example
Unfortunately, these chunks are incomplete JPEG images, because
they lack the DHT segment required for decoding. Quoting from
@url{http://www.digitalpreservation.gov/formats/fdd/fdd000063.shtml}:
Avery Lee, writing in the rec.video.desktop newsgroup in 2001,
commented that "MJPEG, or at least the MJPEG in AVIs having the
MJPG fourcc, is restricted JPEG with a fixed -- and *omitted* --
Huffman table. The JPEG must be YCbCr colorspace, it must be 4:2:2,
and it must use basic Huffman encoding, not arithmetic or
progressive. . . . You can indeed extract the MJPEG frames and
decode them with a regular JPEG decoder, but you have to prepend
the DHT segment to them, or else the decoder won't have any idea
how to decompress the data. The exact table necessary is given in
the OpenDML spec."
This bitstream filter patches the header of frames extracted from an MJPEG
stream (carrying the AVI1 header ID and lacking a DHT segment) to
produce fully qualified JPEG images.
@example
ffmpeg -i mjpeg-movie.avi -c:v copy -bsf:v mjpeg2jpeg frame_%d.jpg
exiftran -i -9 frame*.jpg
ffmpeg -i frame_%d.jpg -c:v copy rotated.avi
@end example
@section mjpega_dump_header
@section movsub
@section mp3_header_compress
@section mp3_header_decompress
@section noise
@section remove_extra
@c man end BITSTREAM FILTERS

/contrib/sdk/sources/ffmpeg/doc/build_system.txt
0,0 → 1,50
FFmpeg currently uses a custom build system, this text attempts to document
some of its obscure features and options.
Makefile variables:
V
Disable the default terse mode, the full command issued by make and its
output will be shown on the screen.
DESTDIR
Destination directory for the install targets, useful to prepare packages
or install FFmpeg in cross-environments.
Makefile targets:
all
Default target, builds all the libraries and the executables.
fate
Run the fate test suite, note you must have installed it
fate-list
Will list all fate/regression test targets
install
Install headers, libraries and programs.
libavformat/output-example
Build the libavformat basic example.
libavcodec/api-example
Build the libavcodec basic example.
libswscale/swscale-test
Build the swscale self-test (useful also as example).
Useful standard make commands:
make -t <target>
Touch all files that otherwise would be build, this is useful to reduce
unneeded rebuilding when changing headers, but note you must force rebuilds
of files that actually need it by hand then.
make -j<num>
rebuild with multiple jobs at the same time. Faster on multi processor systems
make -k
continue build in case of errors, this is useful for the regression tests
sometimes but note it will still not run all reg tests.

/contrib/sdk/sources/ffmpeg/doc/codecs.texi
0,0 → 1,1087
@anchor{codec-options}
@chapter Codec Options
@c man begin CODEC OPTIONS
libavcodec provides some generic global options, which can be set on
all the encoders and decoders. In addition each codec may support
so-called private options, which are specific for a given codec.
Sometimes, a global option may only affect a specific kind of codec,
and may be unsensical or ignored by another, so you need to be aware
of the meaning of the specified options. Also some options are
meant only for decoding or encoding.
Options may be set by specifying -@var{option} @var{value} in the
FFmpeg tools, or by setting the value explicitly in the
@code{AVCodecContext} options or using the @file{libavutil/opt.h} API
for programmatic use.
The list of supported options follow:
@table @option
@item b @var{integer} (@emph{encoding,audio,video})
Set bitrate in bits/s. Default value is 200K.
@item ab @var{integer} (@emph{encoding,audio})
Set audio bitrate (in bits/s). Default value is 128K.
@item bt @var{integer} (@emph{encoding,video})
Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate
tolerance specifies how far ratecontrol is willing to deviate from the
target average bitrate value. This is not related to min/max
bitrate. Lowering tolerance too much has an adverse effect on quality.
@item flags @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
Set generic flags.
Possible values:
@table @samp
@item mv4
Use four motion vector by macroblock (mpeg4).
@item qpel
Use 1/4 pel motion compensation.
@item loop
Use loop filter.
@item qscale
Use fixed qscale.
@item gmc
Use gmc.
@item mv0
Always try a mb with mv=<0,0>.
@item input_preserved
@item pass1
Use internal 2pass ratecontrol in first pass mode.
@item pass2
Use internal 2pass ratecontrol in second pass mode.
@item gray
Only decode/encode grayscale.
@item emu_edge
Do not draw edges.
@item psnr
Set error[?] variables during encoding.
@item truncated
@item naq
Normalize adaptive quantization.
@item ildct
Use interlaced DCT.
@item low_delay
Force low delay.
@item global_header
Place global headers in extradata instead of every keyframe.
@item bitexact
Use only bitexact stuff (except (I)DCT).
@item aic
Apply H263 advanced intra coding / mpeg4 ac prediction.
@item cbp
Deprecated, use mpegvideo private options instead.
@item qprd
Deprecated, use mpegvideo private options instead.
@item ilme
Apply interlaced motion estimation.
@item cgop
Use closed gop.
@end table
@item me_method @var{integer} (@emph{encoding,video})
Set motion estimation method.
Possible values:
@table @samp
@item zero
zero motion estimation (fastest)
@item full
full motion estimation (slowest)
@item epzs
EPZS motion estimation (default)
@item esa
esa motion estimation (alias for full)
@item tesa
tesa motion estimation
@item dia
dia motion estimation (alias for epzs)
@item log
log motion estimation
@item phods
phods motion estimation
@item x1
X1 motion estimation
@item hex
hex motion estimation
@item umh
umh motion estimation
@item iter
iter motion estimation
@end table
@item extradata_size @var{integer}
Set extradata size.
@item time_base @var{rational number}
Set codec time base.
It is the fundamental unit of time (in seconds) in terms of which
frame timestamps are represented. For fixed-fps content, timebase
should be @code{1 / frame_rate} and timestamp increments should be
identically 1.
@item g @var{integer} (@emph{encoding,video})
Set the group of picture size. Default value is 12.
@item ar @var{integer} (@emph{decoding/encoding,audio})
Set audio sampling rate (in Hz).
@item ac @var{integer} (@emph{decoding/encoding,audio})
Set number of audio channels.
@item cutoff @var{integer} (@emph{encoding,audio})
Set cutoff bandwidth.
@item frame_size @var{integer} (@emph{encoding,audio})
Set audio frame size.
Each submitted frame except the last must contain exactly frame_size
samples per channel. May be 0 when the codec has
CODEC_CAP_VARIABLE_FRAME_SIZE set, in that case the frame size is not
restricted. It is set by some decoders to indicate constant frame
size.
@item frame_number @var{integer}
Set the frame number.
@item delay @var{integer}
@item qcomp @var{float} (@emph{encoding,video})
Set video quantizer scale compression (VBR). It is used as a constant
in the ratecontrol equation. Recommended range for default rc_eq:
0.0-1.0.
@item qblur @var{float} (@emph{encoding,video})
Set video quantizer scale blur (VBR).
@item qmin @var{integer} (@emph{encoding,video})
Set min video quantizer scale (VBR). Must be included between -1 and
69, default value is 2.
@item qmax @var{integer} (@emph{encoding,video})
Set max video quantizer scale (VBR). Must be included between -1 and
1024, default value is 31.
@item qdiff @var{integer} (@emph{encoding,video})
Set max difference between the quantizer scale (VBR).
@item bf @var{integer} (@emph{encoding,video})
Set max number of B frames.
@item b_qfactor @var{float} (@emph{encoding,video})
Set qp factor between P and B frames.
@item rc_strategy @var{integer} (@emph{encoding,video})
Set ratecontrol method.
@item b_strategy @var{integer} (@emph{encoding,video})
Set strategy to choose between I/P/B-frames.
@item ps @var{integer} (@emph{encoding,video})
Set RTP payload size in bytes.
@item mv_bits @var{integer}
@item header_bits @var{integer}
@item i_tex_bits @var{integer}
@item p_tex_bits @var{integer}
@item i_count @var{integer}
@item p_count @var{integer}
@item skip_count @var{integer}
@item misc_bits @var{integer}
@item frame_bits @var{integer}
@item codec_tag @var{integer}
@item bug @var{flags} (@emph{decoding,video})
Workaround not auto detected encoder bugs.
Possible values:
@table @samp
@item autodetect
@item old_msmpeg4
some old lavc generated msmpeg4v3 files (no autodetection)
@item xvid_ilace
Xvid interlacing bug (autodetected if fourcc==XVIX)
@item ump4
(autodetected if fourcc==UMP4)
@item no_padding
padding bug (autodetected)
@item amv
@item ac_vlc
illegal vlc bug (autodetected per fourcc)
@item qpel_chroma
@item std_qpel
old standard qpel (autodetected per fourcc/version)
@item qpel_chroma2
@item direct_blocksize
direct-qpel-blocksize bug (autodetected per fourcc/version)
@item edge
edge padding bug (autodetected per fourcc/version)
@item hpel_chroma
@item dc_clip
@item ms
Workaround various bugs in microsoft broken decoders.
@item trunc
trancated frames
@end table
@item lelim @var{integer} (@emph{encoding,video})
Set single coefficient elimination threshold for luminance (negative
values also consider DC coefficient).
@item celim @var{integer} (@emph{encoding,video})
Set single coefficient elimination threshold for chrominance (negative
values also consider dc coefficient)
@item strict @var{integer} (@emph{decoding/encoding,audio,video})
Specify how strictly to follow the standards.
Possible values:
@table @samp
@item very
strictly conform to a older more strict version of the spec or reference software
@item strict
strictly conform to all the things in the spec no matter what consequences
@item normal
@item unofficial
allow unofficial extensions
@item experimental
allow non standardized experimental things, experimental
(unfinished/work in progress/not well tested) decoders and encoders.
Note: experimental decoders can pose a security risk, do not use this for
decoding untrusted input.
@end table
@item b_qoffset @var{float} (@emph{encoding,video})
Set QP offset between P and B frames.
@item err_detect @var{flags} (@emph{decoding,audio,video})
Set error detection flags.
Possible values:
@table @samp
@item crccheck
verify embedded CRCs
@item bitstream
detect bitstream specification deviations
@item buffer
detect improper bitstream length
@item explode
abort decoding on minor error detection
@item careful
consider things that violate the spec and have not been seen in the wild as errors
@item compliant
consider all spec non compliancies as errors
@item aggressive
consider things that a sane encoder should not do as an error
@end table
@item has_b_frames @var{integer}
@item block_align @var{integer}
@item mpeg_quant @var{integer} (@emph{encoding,video})
Use MPEG quantizers instead of H.263.
@item qsquish @var{float} (@emph{encoding,video})
How to keep quantizer between qmin and qmax (0 = clip, 1 = use
differentiable function).
@item rc_qmod_amp @var{float} (@emph{encoding,video})
Set experimental quantizer modulation.
@item rc_qmod_freq @var{integer} (@emph{encoding,video})
Set experimental quantizer modulation.
@item rc_override_count @var{integer}
@item rc_eq @var{string} (@emph{encoding,video})
Set rate control equation. When computing the expression, besides the
standard functions defined in the section 'Expression Evaluation', the
following functions are available: bits2qp(bits), qp2bits(qp). Also
the following constants are available: iTex pTex tex mv fCode iCount
mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
avgTex.
@item maxrate @var{integer} (@emph{encoding,audio,video})
Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
@item minrate @var{integer} (@emph{encoding,audio,video})
Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR
encode. It is of little use elsewise.
@item bufsize @var{integer} (@emph{encoding,audio,video})
Set ratecontrol buffer size (in bits).
@item rc_buf_aggressivity @var{float} (@emph{encoding,video})
Currently useless.
@item i_qfactor @var{float} (@emph{encoding,video})
Set QP factor between P and I frames.
@item i_qoffset @var{float} (@emph{encoding,video})
Set QP offset between P and I frames.
@item rc_init_cplx @var{float} (@emph{encoding,video})
Set initial complexity for 1-pass encoding.
@item dct @var{integer} (@emph{encoding,video})
Set DCT algorithm.
Possible values:
@table @samp
@item auto
autoselect a good one (default)
@item fastint
fast integer
@item int
accurate integer
@item mmx
@item altivec
@item faan
floating point AAN DCT
@end table
@item lumi_mask @var{float} (@emph{encoding,video})
Compress bright areas stronger than medium ones.
@item tcplx_mask @var{float} (@emph{encoding,video})
Set temporal complexity masking.
@item scplx_mask @var{float} (@emph{encoding,video})
Set spatial complexity masking.
@item p_mask @var{float} (@emph{encoding,video})
Set inter masking.
@item dark_mask @var{float} (@emph{encoding,video})
Compress dark areas stronger than medium ones.
@item idct @var{integer} (@emph{decoding/encoding,video})
Select IDCT implementation.
Possible values:
@table @samp
@item auto
@item int
@item simple
@item simplemmx
@item arm
@item altivec
@item sh4
@item simplearm
@item simplearmv5te
@item simplearmv6
@item simpleneon
@item simplealpha
@item ipp
@item xvidmmx
@item faani
floating point AAN IDCT
@end table
@item slice_count @var{integer}
@item ec @var{flags} (@emph{decoding,video})
Set error concealment strategy.
Possible values:
@table @samp
@item guess_mvs
iterative motion vector (MV) search (slow)
@item deblock
use strong deblock filter for damaged MBs
@end table
@item bits_per_coded_sample @var{integer}
@item pred @var{integer} (@emph{encoding,video})
Set prediction method.
Possible values:
@table @samp
@item left
@item plane
@item median
@end table
@item aspect @var{rational number} (@emph{encoding,video})
Set sample aspect ratio.
@item debug @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
Print specific debug info.
Possible values:
@table @samp
@item pict
picture info
@item rc
rate control
@item bitstream
@item mb_type
macroblock (MB) type
@item qp
per-block quantization parameter (QP)
@item mv
motion vector
@item dct_coeff
@item skip
@item startcode
@item pts
@item er
error recognition
@item mmco
memory management control operations (H.264)
@item bugs
@item vis_qp
visualize quantization parameter (QP), lower QP are tinted greener
@item vis_mb_type
visualize block types
@item buffers
picture buffer allocations
@item thread_ops
threading operations
@end table
@item vismv @var{integer} (@emph{decoding,video})
Visualize motion vectors (MVs).
Possible values:
@table @samp
@item pf
forward predicted MVs of P-frames
@item bf
forward predicted MVs of B-frames
@item bb
backward predicted MVs of B-frames
@end table
@item cmp @var{integer} (@emph{encoding,video})
Set full pel me compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item subcmp @var{integer} (@emph{encoding,video})
Set sub pel me compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item mbcmp @var{integer} (@emph{encoding,video})
Set macroblock compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item ildctcmp @var{integer} (@emph{encoding,video})
Set interlaced dct compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item dia_size @var{integer} (@emph{encoding,video})
Set diamond type & size for motion estimation.
@item last_pred @var{integer} (@emph{encoding,video})
Set amount of motion predictors from the previous frame.
@item preme @var{integer} (@emph{encoding,video})
Set pre motion estimation.
@item precmp @var{integer} (@emph{encoding,video})
Set pre motion estimation compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item pre_dia_size @var{integer} (@emph{encoding,video})
Set diamond type & size for motion estimation pre-pass.
@item subq @var{integer} (@emph{encoding,video})
Set sub pel motion estimation quality.
@item dtg_active_format @var{integer}
@item me_range @var{integer} (@emph{encoding,video})
Set limit motion vectors range (1023 for DivX player).
@item ibias @var{integer} (@emph{encoding,video})
Set intra quant bias.
@item pbias @var{integer} (@emph{encoding,video})
Set inter quant bias.
@item color_table_id @var{integer}
@item global_quality @var{integer} (@emph{encoding,audio,video})
@item coder @var{integer} (@emph{encoding,video})
Possible values:
@table @samp
@item vlc
variable length coder / huffman coder
@item ac
arithmetic coder
@item raw
raw (no encoding)
@item rle
run-length coder
@item deflate
deflate-based coder
@end table
@item context @var{integer} (@emph{encoding,video})
Set context model.
@item slice_flags @var{integer}
@item xvmc_acceleration @var{integer}
@item mbd @var{integer} (@emph{encoding,video})
Set macroblock decision algorithm (high quality mode).
Possible values:
@table @samp
@item simple
use mbcmp (default)
@item bits
use fewest bits
@item rd
use best rate distortion
@end table
@item stream_codec_tag @var{integer}
@item sc_threshold @var{integer} (@emph{encoding,video})
Set scene change threshold.
@item lmin @var{integer} (@emph{encoding,video})
Set min lagrange factor (VBR).
@item lmax @var{integer} (@emph{encoding,video})
Set max lagrange factor (VBR).
@item nr @var{integer} (@emph{encoding,video})
Set noise reduction.
@item rc_init_occupancy @var{integer} (@emph{encoding,video})
Set number of bits which should be loaded into the rc buffer before
decoding starts.
@item flags2 @var{flags} (@emph{decoding/encoding,audio,video})
Possible values:
@table @samp
@item fast
Allow non spec compliant speedup tricks.
@item sgop
Deprecated, use mpegvideo private options instead.
@item noout
Skip bitstream encoding.
@item ignorecrop
Ignore cropping information from sps.
@item local_header
Place global headers at every keyframe instead of in extradata.
@item chunks
Frame data might be split into multiple chunks.
@item showall
Show all frames before the first keyframe.
@item skiprd
Deprecated, use mpegvideo private options instead.
@end table
@item error @var{integer} (@emph{encoding,video})
@item qns @var{integer} (@emph{encoding,video})
Deprecated, use mpegvideo private options instead.
@item threads @var{integer} (@emph{decoding/encoding,video})
Possible values:
@table @samp
@item auto
detect a good number of threads
@end table
@item me_threshold @var{integer} (@emph{encoding,video})
Set motion estimation threshold.
@item mb_threshold @var{integer} (@emph{encoding,video})
Set macroblock threshold.
@item dc @var{integer} (@emph{encoding,video})
Set intra_dc_precision.
@item nssew @var{integer} (@emph{encoding,video})
Set nsse weight.
@item skip_top @var{integer} (@emph{decoding,video})
Set number of macroblock rows at the top which are skipped.
@item skip_bottom @var{integer} (@emph{decoding,video})
Set number of macroblock rows at the bottom which are skipped.
@item profile @var{integer} (@emph{encoding,audio,video})
Possible values:
@table @samp
@item unknown
@item aac_main
@item aac_low
@item aac_ssr
@item aac_ltp
@item aac_he
@item aac_he_v2
@item aac_ld
@item aac_eld
@item mpeg2_aac_low
@item mpeg2_aac_he
@item dts
@item dts_es
@item dts_96_24
@item dts_hd_hra
@item dts_hd_ma
@end table
@item level @var{integer} (@emph{encoding,audio,video})
Possible values:
@table @samp
@item unknown
@end table
@item lowres @var{integer} (@emph{decoding,audio,video})
Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
@item skip_threshold @var{integer} (@emph{encoding,video})
Set frame skip threshold.
@item skip_factor @var{integer} (@emph{encoding,video})
Set frame skip factor.
@item skip_exp @var{integer} (@emph{encoding,video})
Set frame skip exponent.
@item skipcmp @var{integer} (@emph{encoding,video})
Set frame skip compare function.
Possible values:
@table @samp
@item sad
sum of absolute differences, fast (default)
@item sse
sum of squared errors
@item satd
sum of absolute Hadamard transformed differences
@item dct
sum of absolute DCT transformed differences
@item psnr
sum of squared quantization errors (avoid, low quality)
@item bit
number of bits needed for the block
@item rd
rate distortion optimal, slow
@item zero
@item vsad
sum of absolute vertical differences
@item vsse
sum of squared vertical differences
@item nsse
noise preserving sum of squared differences
@item w53
5/3 wavelet, only used in snow
@item w97
9/7 wavelet, only used in snow
@item dctmax
@item chroma
@end table
@item border_mask @var{float} (@emph{encoding,video})
Increase the quantizer for macroblocks close to borders.
@item mblmin @var{integer} (@emph{encoding,video})
Set min macroblock lagrange factor (VBR).
@item mblmax @var{integer} (@emph{encoding,video})
Set max macroblock lagrange factor (VBR).
@item mepc @var{integer} (@emph{encoding,video})
Set motion estimation bitrate penalty compensation (1.0 = 256).
@item skip_loop_filter @var{integer} (@emph{decoding,video})
@item skip_idct @var{integer} (@emph{decoding,video})
@item skip_frame @var{integer} (@emph{decoding,video})
Make decoder discard processing depending on the frame type selected
by the option value.
@option{skip_loop_filter} skips frame loop filtering, @option{skip_idct}
skips frame IDCT/dequantization, @option{skip_frame} skips decoding.
Possible values:
@table @samp
@item none
Discard no frame.
@item default
Discard useless frames like 0-sized frames.
@item noref
Discard all non-reference frames.
@item bidir
Discard all bidirectional frames.
@item nokey
Discard all frames excepts keyframes.
@item all
Discard all frames.
@end table
Default value is @samp{default}.
@item bidir_refine @var{integer} (@emph{encoding,video})
Refine the two motion vectors used in bidirectional macroblocks.
@item brd_scale @var{integer} (@emph{encoding,video})
Downscale frames for dynamic B-frame decision.
@item keyint_min @var{integer} (@emph{encoding,video})
Set minimum interval between IDR-frames.
@item refs @var{integer} (@emph{encoding,video})
Set reference frames to consider for motion compensation.
@item chromaoffset @var{integer} (@emph{encoding,video})
Set chroma qp offset from luma.
@item trellis @var{integer} (@emph{encoding,audio,video})
Set rate-distortion optimal quantization.
@item sc_factor @var{integer} (@emph{encoding,video})
Set value multiplied by qscale for each frame and added to
scene_change_score.
@item mv0_threshold @var{integer} (@emph{encoding,video})
@item b_sensitivity @var{integer} (@emph{encoding,video})
Adjust sensitivity of b_frame_strategy 1.
@item compression_level @var{integer} (@emph{encoding,audio,video})
@item min_prediction_order @var{integer} (@emph{encoding,audio})
@item max_prediction_order @var{integer} (@emph{encoding,audio})
@item timecode_frame_start @var{integer} (@emph{encoding,video})
Set GOP timecode frame start number, in non drop frame format.
@item request_channels @var{integer} (@emph{decoding,audio})
Set desired number of audio channels.
@item bits_per_raw_sample @var{integer}
@item channel_layout @var{integer} (@emph{decoding/encoding,audio})
Possible values:
@table @samp
@end table
@item request_channel_layout @var{integer} (@emph{decoding,audio})
Possible values:
@table @samp
@end table
@item rc_max_vbv_use @var{float} (@emph{encoding,video})
@item rc_min_vbv_use @var{float} (@emph{encoding,video})
@item ticks_per_frame @var{integer} (@emph{decoding/encoding,audio,video})
@item color_primaries @var{integer} (@emph{decoding/encoding,video})
@item color_trc @var{integer} (@emph{decoding/encoding,video})
@item colorspace @var{integer} (@emph{decoding/encoding,video})
@item color_range @var{integer} (@emph{decoding/encoding,video})
@item chroma_sample_location @var{integer} (@emph{decoding/encoding,video})
@item log_level_offset @var{integer}
Set the log level offset.
@item slices @var{integer} (@emph{encoding,video})
Number of slices, used in parallelized encoding.
@item thread_type @var{flags} (@emph{decoding/encoding,video})
Select multithreading type.
Possible values:
@table @samp
@item slice
@item frame
@end table
@item audio_service_type @var{integer} (@emph{encoding,audio})
Set audio service type.
Possible values:
@table @samp
@item ma
Main Audio Service
@item ef
Effects
@item vi
Visually Impaired
@item hi
Hearing Impaired
@item di
Dialogue
@item co
Commentary
@item em
Emergency
@item vo
Voice Over
@item ka
Karaoke
@end table
@item request_sample_fmt @var{sample_fmt} (@emph{decoding,audio})
Set sample format audio decoders should prefer. Default value is
@code{none}.
@item pkt_timebase @var{rational number}
@item sub_charenc @var{encoding} (@emph{decoding,subtitles})
Set the input subtitles character encoding.
@item field_order @var{field_order} (@emph{video})
Set/override the field order of the video.
Possible values:
@table @samp
@item progressive
Progressive video
@item tt
Interlaced video, top field coded and displayed first
@item bb
Interlaced video, bottom field coded and displayed first
@item tb
Interlaced video, top coded first, bottom displayed first
@item bt
Interlaced video, bottom coded first, top displayed first
@end table
@item skip_alpha @var{integer} (@emph{decoding,video})
Set to 1 to disable processing alpha (transparency). This works like the
@samp{gray} flag in the @option{flags} option which skips chroma information
instead of alpha. Default is 0.
@end table
@c man end CODEC OPTIONS
@include decoders.texi
@include encoders.texi

/contrib/sdk/sources/ffmpeg/doc/config.texi
0,0 → 1,1612
@c auto-generated by configure
@c @set arch-aarch64 no
@c @set arch-alpha no
@c @set arch-arm no
@c @set arch-avr32 no
@c @set arch-avr32-ap no
@c @set arch-avr32-uc no
@c @set arch-bfin no
@c @set arch-ia64 no
@c @set arch-m68k no
@c @set arch-mips no
@c @set arch-mips64 no
@c @set arch-parisc no
@c @set arch-ppc no
@c @set arch-ppc64 no
@c @set arch-s390 no
@c @set arch-sh4 no
@c @set arch-sparc no
@c @set arch-sparc64 no
@c @set arch-tilegx no
@c @set arch-tilepro no
@c @set arch-tomi no
@set arch-x86 yes
@set arch-x86-32 yes
@c @set arch-x86-64 no
@c @set have-armv5te no
@c @set have-armv6 no
@c @set have-armv6t2 no
@c @set have-neon no
@c @set have-vfp no
@c @set have-vfpv3 no
@set have-amd3dnow yes
@set have-amd3dnowext yes
@c @set have-avx no
@c @set have-avx2 no
@c @set have-fma4 no
@set have-i686 yes
@set have-mmx yes
@set have-mmxext yes
@set have-sse yes
@set have-sse2 yes
@set have-sse3 yes
@set have-sse4 yes
@set have-sse42 yes
@set have-ssse3 yes
@c @set have-altivec no
@c @set have-ppc4xx no
@c @set have-vis no
@c @set have-mipsfpu no
@c @set have-mips32r2 no
@c @set have-mipsdspr1 no
@c @set have-mipsdspr2 no
@c @set have-armv5te-external no
@c @set have-armv6-external no
@c @set have-armv6t2-external no
@c @set have-neon-external no
@c @set have-vfp-external no
@c @set have-vfpv3-external no
@set have-amd3dnow-external yes
@set have-amd3dnowext-external yes
@c @set have-avx-external no
@c @set have-avx2-external no
@c @set have-fma4-external no
@c @set have-i686-external no
@set have-mmx-external yes
@set have-mmxext-external yes
@set have-sse-external yes
@set have-sse2-external yes
@set have-sse3-external yes
@set have-sse4-external yes
@set have-sse42-external yes
@set have-ssse3-external yes
@c @set have-altivec-external no
@c @set have-ppc4xx-external no
@c @set have-vis-external no
@c @set have-mipsfpu-external no
@c @set have-mips32r2-external no
@c @set have-mipsdspr1-external no
@c @set have-mipsdspr2-external no
@c @set have-armv5te-inline no
@c @set have-armv6-inline no
@c @set have-armv6t2-inline no
@c @set have-neon-inline no
@c @set have-vfp-inline no
@c @set have-vfpv3-inline no
@set have-amd3dnow-inline yes
@set have-amd3dnowext-inline yes
@c @set have-avx-inline no
@c @set have-avx2-inline no
@c @set have-fma4-inline no
@c @set have-i686-inline no
@set have-mmx-inline yes
@set have-mmxext-inline yes
@set have-sse-inline yes
@set have-sse2-inline yes
@set have-sse3-inline yes
@set have-sse4-inline yes
@set have-sse42-inline yes
@set have-ssse3-inline yes
@c @set have-altivec-inline no
@c @set have-ppc4xx-inline no
@c @set have-vis-inline no
@c @set have-mipsfpu-inline no
@c @set have-mips32r2-inline no
@c @set have-mipsdspr1-inline no
@c @set have-mipsdspr2-inline no
@set have-inline-asm yes
@set have-symver yes
@set have-yasm yes
@c @set have-bigendian no
@set have-fast-unaligned yes
@c @set have-incompatible-libav-abi no
@c @set have-incompatible-fork-abi no
@c @set have-pthreads no
@c @set have-w32threads no
@c @set have-os2threads no
@set have-atomics-gcc yes
@c @set have-atomics-suncc no
@c @set have-atomics-win32 no
@set have-atanf yes
@set have-atan2f yes
@set have-cbrt yes
@set have-cbrtf yes
@set have-cosf yes
@set have-exp2 yes
@set have-exp2f yes
@set have-expf yes
@set have-isinf yes
@set have-isnan yes
@set have-ldexpf yes
@set have-llrint yes
@set have-llrintf yes
@set have-log2 yes
@set have-log2f yes
@set have-log10f yes
@set have-lrint yes
@set have-lrintf yes
@set have-powf yes
@set have-rint yes
@set have-round yes
@set have-roundf yes
@set have-sinf yes
@set have-trunc yes
@set have-truncf yes
@set have-access yes
@c @set have-aligned-malloc no
@set have-aligned-stack yes
@c @set have-alsa-asoundlib-h no
@c @set have-altivec-h no
@c @set have-arpa-inet-h no
@c @set have-asm-mod-q no
@c @set have-asm-mod-y no
@c @set have-asm-types-h no
@c @set have-atomic-cas-ptr no
@set have-atomics-native yes
@set have-attribute-may-alias yes
@set have-attribute-packed yes
@c @set have-cdio-paranoia-h no
@c @set have-cdio-paranoia-paranoia-h no
@c @set have-cl-cl-h no
@c @set have-clock-gettime no
@c @set have-closesocket no
@set have-commandlinetoargvw yes
@c @set have-cpunop no
@set have-cryptgenrandom yes
@c @set have-dcbzl no
@c @set have-dev-bktr-ioctl-bt848-h no
@c @set have-dev-bktr-ioctl-meteor-h no
@c @set have-dev-ic-bt8xx-h no
@c @set have-dev-video-bktr-ioctl-bt848-h no
@c @set have-dev-video-meteor-ioctl-meteor-h no
@set have-direct-h yes
@c @set have-dlfcn-h no
@c @set have-dlopen no
@set have-dos-paths yes
@c @set have-dxva-h no
@set have-ebp-available yes
@set have-ebx-available yes
@c @set have-fast-64bit no
@set have-fast-clz yes
@c @set have-fast-cmov no
@c @set have-fcntl no
@c @set have-fork no
@c @set have-getaddrinfo no
@c @set have-gethrtime no
@c @set have-getrusage no
@c @set have-glob no
@set have-gnu-as yes
@c @set have-ibm-asm no
@c @set have-inet-aton no
@set have-io-h yes
@set have-inline-asm-labels yes
@set have-isatty yes
@c @set have-jack-port-get-latency-range no
@set have-kbhit yes
@c @set have-ldbrx no
@c @set have-libdc1394-1 no
@c @set have-libdc1394-2 no
@set have-local-aligned-16 yes
@set have-local-aligned-8 yes
@c @set have-localtime-r no
@c @set have-loongson no
@c @set have-lzo1x-999-compress no
@c @set have-machine-ioctl-bt848-h no
@c @set have-machine-ioctl-meteor-h no
@c @set have-machine-rw-barrier no
@set have-makeinfo yes
@set have-malloc-h yes
@c @set have-memalign no
@c @set have-mkstemp no
@c @set have-mm-empty no
@c @set have-mmap no
@c @set have-msvcrt no
@c @set have-nanosleep no
@c @set have-openjpeg-1-5-openjpeg-h no
@set have-peeknamedpipe yes
@set have-perl yes
@set have-pod2man yes
@c @set have-poll-h no
@c @set have-posix-memalign no
@set have-pragma-deprecated yes
@c @set have-pthread-cancel no
@c @set have-rdtsc no
@set have-rsync-contimeout yes
@c @set have-sarestart no
@c @set have-sched-getaffinity no
@c @set have-sdl no
@set have-setconsoletextattribute yes
@c @set have-setmode no
@c @set have-setrlimit no
@set have-sleep yes
@c @set have-sndio-h no
@c @set have-socklen-t no
@c @set have-soundcard-h no
@c @set have-strerror-r no
@c @set have-struct-addrinfo no
@c @set have-struct-group-source-req no
@c @set have-struct-ip-mreq-source no
@c @set have-struct-ipv6-mreq no
@c @set have-struct-pollfd no
@c @set have-struct-rusage-ru-maxrss no
@c @set have-struct-sctp-event-subscribe no
@c @set have-struct-sockaddr-in6 no
@c @set have-struct-sockaddr-sa-len no
@c @set have-struct-sockaddr-storage no
@c @set have-struct-stat-st-mtim-tv-nsec no
@c @set have-struct-v4l2-frmivalenum-discrete no
@set have-symver-asm-label yes
@c @set have-symver-gnu-asm no
@set have-sync-val-compare-and-swap yes
@c @set have-sysconf no
@c @set have-sysctl no
@c @set have-sys-mman-h no
@set have-sys-param-h yes
@set have-sys-resource-h yes
@c @set have-sys-select-h no
@c @set have-sys-soundcard-h no
@set have-sys-time-h yes
@c @set have-sys-un-h no
@c @set have-sys-videoio-h no
@c @set have-termios-h no
@c @set have-texi2html no
@c @set have-threads no
@set have-unistd-h yes
@set have-usleep yes
@c @set have-vfp-args no
@c @set have-winsock2-h no
@c @set have-xform-asm no
@c @set have-xmm-clobbers no
@set config-bsfs yes
@set config-decoders yes
@set config-demuxers yes
@c @set config-encoders no
@set config-filters yes
@c @set config-hwaccels no
@c @set config-indevs no
@c @set config-muxers no
@c @set config-outdevs no
@set config-parsers yes
@set config-protocols yes
@set config-doc yes
@c @set config-htmlpages no
@set config-manpages yes
@set config-podpages yes
@set config-txtpages yes
@c @set config-avisynth no
@c @set config-bzlib no
@c @set config-crystalhd no
@c @set config-fontconfig no
@c @set config-frei0r no
@c @set config-gnutls no
@c @set config-iconv no
@c @set config-ladspa no
@c @set config-libaacplus no
@c @set config-libass no
@c @set config-libbluray no
@c @set config-libcaca no
@c @set config-libcdio no
@c @set config-libcelt no
@c @set config-libdc1394 no
@c @set config-libfaac no
@c @set config-libfdk-aac no
@c @set config-libflite no
@c @set config-libfreetype no
@c @set config-libgme no
@c @set config-libgsm no
@c @set config-libiec61883 no
@c @set config-libilbc no
@c @set config-libmodplug no
@c @set config-libmp3lame no
@c @set config-libnut no
@c @set config-libopencore-amrnb no
@c @set config-libopencore-amrwb no
@c @set config-libopencv no
@c @set config-libopenjpeg no
@c @set config-libopus no
@c @set config-libpulse no
@c @set config-libquvi no
@c @set config-librtmp no
@c @set config-libschroedinger no
@c @set config-libshine no
@c @set config-libsoxr no
@c @set config-libspeex no
@c @set config-libssh no
@c @set config-libstagefright-h264 no
@c @set config-libtheora no
@c @set config-libtwolame no
@c @set config-libutvideo no
@c @set config-libv4l2 no
@c @set config-libvidstab no
@c @set config-libvo-aacenc no
@c @set config-libvo-amrwbenc no
@c @set config-libvorbis no
@c @set config-libvpx no
@c @set config-libwavpack no
@c @set config-libx264 no
@c @set config-libxavs no
@c @set config-libxvid no
@c @set config-libzmq no
@c @set config-libzvbi no
@c @set config-openal no
@c @set config-opencl no
@c @set config-openssl no
@c @set config-x11grab no
@set config-zlib yes
@c @set config-dxva2 no
@c @set config-vaapi no
@c @set config-vda no
@c @set config-vdpau no
@set config-avcodec yes
@set config-avdevice yes
@c @set config-avfilter no
@set config-avformat yes
@c @set config-avresample no
@set config-avutil yes
@c @set config-postproc no
@set config-swresample yes
@set config-swscale yes
@c @set config-ffplay no
@c @set config-ffprobe no
@c @set config-ffserver no
@c @set config-ffmpeg no
@set config-dct yes
@set config-dwt yes
@set config-error-resilience yes
@set config-fast-unaligned yes
@set config-fft yes
@c @set config-ftrapv no
@set config-gpl yes
@c @set config-gray no
@c @set config-hardcoded-tables no
@c @set config-incompatible-libav-abi no
@c @set config-incompatible-fork-abi no
@set config-lsp yes
@set config-lzo yes
@set config-mdct yes
@set config-memalign-hack yes
@c @set config-memory-poisoning no
@c @set config-network no
@c @set config-nonfree no
@c @set config-pic no
@set config-rdft yes
@set config-runtime-cpudetect yes
@set config-safe-bitstream-reader yes
@set config-shared yes
@c @set config-small no
@c @set config-sram no
@c @set config-static no
@set config-swscale-alpha yes
@c @set config-thumb no
@c @set config-version3 no
@c @set config-xmm-clobber-test no
@set config-aandcttables yes
@set config-ac3dsp yes
@c @set config-audio-frame-queue no
@set config-dsputil yes
@set config-exif yes
@c @set config-frame-thread-encoder no
@c @set config-gcrypt no
@set config-golomb yes
@c @set config-gplv3 no
@set config-h264chroma yes
@set config-h264dsp yes
@set config-h264pred yes
@set config-h264qpel yes
@set config-hpeldsp yes
@set config-huffman yes
@c @set config-lgplv3 no
@c @set config-lpc no
@set config-mpegaudio yes
@set config-mpegaudiodsp yes
@set config-mpegvideo yes
@c @set config-mpegvideoenc no
@c @set config-nettle no
@set config-rangecoder yes
@set config-riffdec yes
@c @set config-riffenc no
@c @set config-rtpdec no
@c @set config-rtpenc-chain no
@set config-sinewin yes
@set config-videodsp yes
@set config-vp3dsp yes
@set config-aac-adtstoasc-bsf yes
@set config-chomp-bsf yes
@set config-dump-extradata-bsf yes
@set config-h264-mp4toannexb-bsf yes
@set config-imx-dump-header-bsf yes
@set config-mjpeg2jpeg-bsf yes
@set config-mjpega-dump-header-bsf yes
@set config-mp3-header-compress-bsf yes
@set config-mp3-header-decompress-bsf yes
@set config-mov2textsub-bsf yes
@set config-noise-bsf yes
@set config-remove-extradata-bsf yes
@set config-text2movsub-bsf yes
@set config-aasc-decoder yes
@set config-aic-decoder yes
@set config-amv-decoder yes
@set config-anm-decoder yes
@set config-ansi-decoder yes
@set config-asv1-decoder yes
@set config-asv2-decoder yes
@set config-aura-decoder yes
@set config-aura2-decoder yes
@set config-avrp-decoder yes
@set config-avrn-decoder yes
@set config-avs-decoder yes
@set config-avui-decoder yes
@set config-ayuv-decoder yes
@set config-bethsoftvid-decoder yes
@set config-bfi-decoder yes
@set config-bink-decoder yes
@set config-bmp-decoder yes
@set config-bmv-video-decoder yes
@set config-brender-pix-decoder yes
@set config-c93-decoder yes
@set config-cavs-decoder yes
@set config-cdgraphics-decoder yes
@set config-cdxl-decoder yes
@set config-cinepak-decoder yes
@set config-cljr-decoder yes
@set config-cllc-decoder yes
@set config-comfortnoise-decoder yes
@set config-cpia-decoder yes
@set config-cscd-decoder yes
@set config-cyuv-decoder yes
@set config-dfa-decoder yes
@set config-dirac-decoder yes
@set config-dnxhd-decoder yes
@set config-dpx-decoder yes
@set config-dsicinvideo-decoder yes
@set config-dvvideo-decoder yes
@set config-dxa-decoder yes
@set config-dxtory-decoder yes
@set config-eacmv-decoder yes
@set config-eamad-decoder yes
@set config-eatgq-decoder yes
@set config-eatgv-decoder yes
@set config-eatqi-decoder yes
@set config-eightbps-decoder yes
@set config-eightsvx-exp-decoder yes
@set config-eightsvx-fib-decoder yes
@set config-escape124-decoder yes
@set config-escape130-decoder yes
@set config-exr-decoder yes
@set config-ffv1-decoder yes
@set config-ffvhuff-decoder yes
@set config-flashsv-decoder yes
@set config-flashsv2-decoder yes
@set config-flic-decoder yes
@set config-flv-decoder yes
@set config-fourxm-decoder yes
@set config-fraps-decoder yes
@set config-frwu-decoder yes
@set config-g2m-decoder yes
@set config-gif-decoder yes
@set config-h261-decoder yes
@set config-h263-decoder yes
@set config-h263i-decoder yes
@set config-h263p-decoder yes
@set config-h264-decoder yes
@c @set config-h264-crystalhd-decoder no
@c @set config-h264-vda-decoder no
@c @set config-h264-vdpau-decoder no
@set config-hevc-decoder yes
@set config-huffyuv-decoder yes
@set config-idcin-decoder yes
@set config-iff-byterun1-decoder yes
@set config-iff-ilbm-decoder yes
@set config-indeo2-decoder yes
@set config-indeo3-decoder yes
@set config-indeo4-decoder yes
@set config-indeo5-decoder yes
@set config-interplay-video-decoder yes
@set config-jpeg2000-decoder yes
@set config-jpegls-decoder yes
@set config-jv-decoder yes
@set config-kgv1-decoder yes
@set config-kmvc-decoder yes
@set config-lagarith-decoder yes
@set config-loco-decoder yes
@set config-mdec-decoder yes
@set config-mimic-decoder yes
@set config-mjpeg-decoder yes
@set config-mjpegb-decoder yes
@set config-mmvideo-decoder yes
@set config-motionpixels-decoder yes
@c @set config-mpeg-xvmc-decoder no
@set config-mpeg1video-decoder yes
@set config-mpeg2video-decoder yes
@set config-mpeg4-decoder yes
@c @set config-mpeg4-crystalhd-decoder no
@c @set config-mpeg4-vdpau-decoder no
@set config-mpegvideo-decoder yes
@c @set config-mpeg-vdpau-decoder no
@c @set config-mpeg1-vdpau-decoder no
@c @set config-mpeg2-crystalhd-decoder no
@set config-msa1-decoder yes
@c @set config-msmpeg4-crystalhd-decoder no
@set config-msmpeg4v1-decoder yes
@set config-msmpeg4v2-decoder yes
@set config-msmpeg4v3-decoder yes
@set config-msrle-decoder yes
@set config-mss1-decoder yes
@set config-mss2-decoder yes
@set config-msvideo1-decoder yes
@set config-mszh-decoder yes
@set config-mts2-decoder yes
@set config-mvc1-decoder yes
@set config-mvc2-decoder yes
@set config-mxpeg-decoder yes
@set config-nuv-decoder yes
@set config-paf-video-decoder yes
@set config-pam-decoder yes
@set config-pbm-decoder yes
@set config-pcx-decoder yes
@set config-pgm-decoder yes
@set config-pgmyuv-decoder yes
@set config-pictor-decoder yes
@set config-png-decoder yes
@set config-ppm-decoder yes
@set config-prores-decoder yes
@set config-prores-lgpl-decoder yes
@set config-ptx-decoder yes
@set config-qdraw-decoder yes
@set config-qpeg-decoder yes
@set config-qtrle-decoder yes
@set config-r10k-decoder yes
@set config-r210-decoder yes
@set config-rawvideo-decoder yes
@set config-rl2-decoder yes
@set config-roq-decoder yes
@set config-rpza-decoder yes
@set config-rv10-decoder yes
@set config-rv20-decoder yes
@set config-rv30-decoder yes
@set config-rv40-decoder yes
@set config-s302m-decoder yes
@set config-sanm-decoder yes
@set config-sgi-decoder yes
@set config-sgirle-decoder yes
@set config-smacker-decoder yes
@set config-smc-decoder yes
@set config-smvjpeg-decoder yes
@set config-snow-decoder yes
@set config-sp5x-decoder yes
@set config-sunrast-decoder yes
@set config-svq1-decoder yes
@set config-svq3-decoder yes
@set config-targa-decoder yes
@set config-targa-y216-decoder yes
@set config-theora-decoder yes
@set config-thp-decoder yes
@set config-tiertexseqvideo-decoder yes
@set config-tiff-decoder yes
@set config-tmv-decoder yes
@set config-truemotion1-decoder yes
@set config-truemotion2-decoder yes
@set config-tscc-decoder yes
@set config-tscc2-decoder yes
@set config-txd-decoder yes
@set config-ulti-decoder yes
@set config-utvideo-decoder yes
@set config-v210-decoder yes
@set config-v210x-decoder yes
@set config-v308-decoder yes
@set config-v408-decoder yes
@set config-v410-decoder yes
@set config-vb-decoder yes
@set config-vble-decoder yes
@set config-vc1-decoder yes
@c @set config-vc1-crystalhd-decoder no
@c @set config-vc1-vdpau-decoder no
@set config-vc1image-decoder yes
@set config-vcr1-decoder yes
@set config-vmdvideo-decoder yes
@set config-vmnc-decoder yes
@set config-vp3-decoder yes
@set config-vp5-decoder yes
@set config-vp6-decoder yes
@set config-vp6a-decoder yes
@set config-vp6f-decoder yes
@set config-vp8-decoder yes
@set config-vp9-decoder yes
@set config-vqa-decoder yes
@set config-webp-decoder yes
@set config-wmv1-decoder yes
@set config-wmv2-decoder yes
@set config-wmv3-decoder yes
@c @set config-wmv3-crystalhd-decoder no
@c @set config-wmv3-vdpau-decoder no
@set config-wmv3image-decoder yes
@set config-wnv1-decoder yes
@set config-xan-wc3-decoder yes
@set config-xan-wc4-decoder yes
@set config-xbm-decoder yes
@set config-xface-decoder yes
@set config-xl-decoder yes
@set config-xwd-decoder yes
@set config-y41p-decoder yes
@set config-yop-decoder yes
@set config-yuv4-decoder yes
@set config-zero12v-decoder yes
@set config-zerocodec-decoder yes
@set config-zlib-decoder yes
@set config-zmbv-decoder yes
@set config-aac-decoder yes
@set config-aac-latm-decoder yes
@set config-ac3-decoder yes
@set config-alac-decoder yes
@set config-als-decoder yes
@set config-amrnb-decoder yes
@set config-amrwb-decoder yes
@set config-ape-decoder yes
@set config-atrac1-decoder yes
@set config-atrac3-decoder yes
@set config-binkaudio-dct-decoder yes
@set config-binkaudio-rdft-decoder yes
@set config-bmv-audio-decoder yes
@set config-cook-decoder yes
@set config-dca-decoder yes
@set config-dsicinaudio-decoder yes
@set config-eac3-decoder yes
@set config-evrc-decoder yes
@set config-ffwavesynth-decoder yes
@set config-flac-decoder yes
@set config-g723-1-decoder yes
@set config-g729-decoder yes
@set config-gsm-decoder yes
@set config-gsm-ms-decoder yes
@set config-iac-decoder yes
@set config-imc-decoder yes
@set config-mace3-decoder yes
@set config-mace6-decoder yes
@set config-metasound-decoder yes
@set config-mlp-decoder yes
@set config-mp1-decoder yes
@set config-mp1float-decoder yes
@set config-mp2-decoder yes
@set config-mp2float-decoder yes
@set config-mp3-decoder yes
@set config-mp3float-decoder yes
@set config-mp3adu-decoder yes
@set config-mp3adufloat-decoder yes
@set config-mp3on4-decoder yes
@set config-mp3on4float-decoder yes
@set config-mpc7-decoder yes
@set config-mpc8-decoder yes
@set config-nellymoser-decoder yes
@set config-paf-audio-decoder yes
@set config-qcelp-decoder yes
@set config-qdm2-decoder yes
@set config-ra-144-decoder yes
@set config-ra-288-decoder yes
@set config-ralf-decoder yes
@set config-shorten-decoder yes
@set config-sipr-decoder yes
@set config-smackaud-decoder yes
@set config-sonic-decoder yes
@set config-tak-decoder yes
@set config-truehd-decoder yes
@set config-truespeech-decoder yes
@set config-tta-decoder yes
@set config-twinvq-decoder yes
@set config-vmdaudio-decoder yes
@set config-vorbis-decoder yes
@set config-wavpack-decoder yes
@set config-wmalossless-decoder yes
@set config-wmapro-decoder yes
@set config-wmav1-decoder yes
@set config-wmav2-decoder yes
@set config-wmavoice-decoder yes
@set config-ws-snd1-decoder yes
@set config-pcm-alaw-decoder yes
@set config-pcm-bluray-decoder yes
@set config-pcm-dvd-decoder yes
@set config-pcm-f32be-decoder yes
@set config-pcm-f32le-decoder yes
@set config-pcm-f64be-decoder yes
@set config-pcm-f64le-decoder yes
@set config-pcm-lxf-decoder yes
@set config-pcm-mulaw-decoder yes
@set config-pcm-s8-decoder yes
@set config-pcm-s8-planar-decoder yes
@set config-pcm-s16be-decoder yes
@set config-pcm-s16be-planar-decoder yes
@set config-pcm-s16le-decoder yes
@set config-pcm-s16le-planar-decoder yes
@set config-pcm-s24be-decoder yes
@set config-pcm-s24daud-decoder yes
@set config-pcm-s24le-decoder yes
@set config-pcm-s24le-planar-decoder yes
@set config-pcm-s32be-decoder yes
@set config-pcm-s32le-decoder yes
@set config-pcm-s32le-planar-decoder yes
@set config-pcm-u8-decoder yes
@set config-pcm-u16be-decoder yes
@set config-pcm-u16le-decoder yes
@set config-pcm-u24be-decoder yes
@set config-pcm-u24le-decoder yes
@set config-pcm-u32be-decoder yes
@set config-pcm-u32le-decoder yes
@set config-pcm-zork-decoder yes
@set config-interplay-dpcm-decoder yes
@set config-roq-dpcm-decoder yes
@set config-sol-dpcm-decoder yes
@set config-xan-dpcm-decoder yes
@set config-adpcm-4xm-decoder yes
@set config-adpcm-adx-decoder yes
@set config-adpcm-afc-decoder yes
@set config-adpcm-ct-decoder yes
@set config-adpcm-dtk-decoder yes
@set config-adpcm-ea-decoder yes
@set config-adpcm-ea-maxis-xa-decoder yes
@set config-adpcm-ea-r1-decoder yes
@set config-adpcm-ea-r2-decoder yes
@set config-adpcm-ea-r3-decoder yes
@set config-adpcm-ea-xas-decoder yes
@set config-adpcm-g722-decoder yes
@set config-adpcm-g726-decoder yes
@set config-adpcm-g726le-decoder yes
@set config-adpcm-ima-amv-decoder yes
@set config-adpcm-ima-apc-decoder yes
@set config-adpcm-ima-dk3-decoder yes
@set config-adpcm-ima-dk4-decoder yes
@set config-adpcm-ima-ea-eacs-decoder yes
@set config-adpcm-ima-ea-sead-decoder yes
@set config-adpcm-ima-iss-decoder yes
@set config-adpcm-ima-oki-decoder yes
@set config-adpcm-ima-qt-decoder yes
@set config-adpcm-ima-rad-decoder yes
@set config-adpcm-ima-smjpeg-decoder yes
@set config-adpcm-ima-wav-decoder yes
@set config-adpcm-ima-ws-decoder yes
@set config-adpcm-ms-decoder yes
@set config-adpcm-sbpro-2-decoder yes
@set config-adpcm-sbpro-3-decoder yes
@set config-adpcm-sbpro-4-decoder yes
@set config-adpcm-swf-decoder yes
@set config-adpcm-thp-decoder yes
@set config-adpcm-xa-decoder yes
@set config-adpcm-yamaha-decoder yes
@set config-vima-decoder yes
@set config-ssa-decoder yes
@set config-ass-decoder yes
@set config-dvbsub-decoder yes
@set config-dvdsub-decoder yes
@set config-jacosub-decoder yes
@set config-microdvd-decoder yes
@set config-movtext-decoder yes
@set config-mpl2-decoder yes
@set config-pgssub-decoder yes
@set config-pjs-decoder yes
@set config-realtext-decoder yes
@set config-sami-decoder yes
@set config-srt-decoder yes
@set config-subrip-decoder yes
@set config-subviewer-decoder yes
@set config-subviewer1-decoder yes
@set config-text-decoder yes
@set config-vplayer-decoder yes
@set config-webvtt-decoder yes
@set config-xsub-decoder yes
@c @set config-libcelt-decoder no
@c @set config-libfdk-aac-decoder no
@c @set config-libgsm-decoder no
@c @set config-libgsm-ms-decoder no
@c @set config-libilbc-decoder no
@c @set config-libopencore-amrnb-decoder no
@c @set config-libopencore-amrwb-decoder no
@c @set config-libopenjpeg-decoder no
@c @set config-libopus-decoder no
@c @set config-libschroedinger-decoder no
@c @set config-libspeex-decoder no
@c @set config-libstagefright-h264-decoder no
@c @set config-libutvideo-decoder no
@c @set config-libvorbis-decoder no
@c @set config-libvpx-vp8-decoder no
@c @set config-libvpx-vp9-decoder no
@c @set config-libzvbi-teletext-decoder no
@set config-bintext-decoder yes
@set config-xbin-decoder yes
@set config-idf-decoder yes
@set config-aac-demuxer yes
@set config-ac3-demuxer yes
@set config-act-demuxer yes
@set config-adf-demuxer yes
@set config-adp-demuxer yes
@set config-adx-demuxer yes
@set config-aea-demuxer yes
@set config-afc-demuxer yes
@set config-aiff-demuxer yes
@set config-amr-demuxer yes
@set config-anm-demuxer yes
@set config-apc-demuxer yes
@set config-ape-demuxer yes
@set config-aqtitle-demuxer yes
@set config-asf-demuxer yes
@set config-ass-demuxer yes
@set config-ast-demuxer yes
@set config-au-demuxer yes
@set config-avi-demuxer yes
@c @set config-avisynth-demuxer no
@set config-avr-demuxer yes
@set config-avs-demuxer yes
@set config-bethsoftvid-demuxer yes
@set config-bfi-demuxer yes
@set config-bintext-demuxer yes
@set config-bink-demuxer yes
@set config-bit-demuxer yes
@set config-bmv-demuxer yes
@set config-brstm-demuxer yes
@set config-boa-demuxer yes
@set config-c93-demuxer yes
@set config-caf-demuxer yes
@set config-cavsvideo-demuxer yes
@set config-cdg-demuxer yes
@set config-cdxl-demuxer yes
@set config-concat-demuxer yes
@set config-data-demuxer yes
@set config-daud-demuxer yes
@set config-dfa-demuxer yes
@set config-dirac-demuxer yes
@set config-dnxhd-demuxer yes
@set config-dsicin-demuxer yes
@set config-dts-demuxer yes
@set config-dtshd-demuxer yes
@set config-dv-demuxer yes
@set config-dxa-demuxer yes
@set config-ea-demuxer yes
@set config-ea-cdata-demuxer yes
@set config-eac3-demuxer yes
@set config-epaf-demuxer yes
@set config-ffm-demuxer yes
@set config-ffmetadata-demuxer yes
@set config-filmstrip-demuxer yes
@set config-flac-demuxer yes
@set config-flic-demuxer yes
@set config-flv-demuxer yes
@set config-fourxm-demuxer yes
@set config-frm-demuxer yes
@set config-g722-demuxer yes
@set config-g723-1-demuxer yes
@set config-g729-demuxer yes
@set config-gif-demuxer yes
@set config-gsm-demuxer yes
@set config-gxf-demuxer yes
@set config-h261-demuxer yes
@set config-h263-demuxer yes
@set config-h264-demuxer yes
@set config-hevc-demuxer yes
@set config-hls-demuxer yes
@set config-ico-demuxer yes
@set config-idcin-demuxer yes
@set config-idf-demuxer yes
@set config-iff-demuxer yes
@set config-ilbc-demuxer yes
@set config-image2-demuxer yes
@set config-image2pipe-demuxer yes
@set config-ingenient-demuxer yes
@set config-ipmovie-demuxer yes
@set config-ircam-demuxer yes
@set config-iss-demuxer yes
@set config-iv8-demuxer yes
@set config-ivf-demuxer yes
@set config-jacosub-demuxer yes
@set config-jv-demuxer yes
@set config-latm-demuxer yes
@set config-lmlm4-demuxer yes
@set config-loas-demuxer yes
@set config-lvf-demuxer yes
@set config-lxf-demuxer yes
@set config-m4v-demuxer yes
@set config-matroska-demuxer yes
@set config-mgsts-demuxer yes
@set config-microdvd-demuxer yes
@set config-mjpeg-demuxer yes
@set config-mlp-demuxer yes
@set config-mm-demuxer yes
@set config-mmf-demuxer yes
@set config-mov-demuxer yes
@set config-mp3-demuxer yes
@set config-mpc-demuxer yes
@set config-mpc8-demuxer yes
@set config-mpegps-demuxer yes
@set config-mpegts-demuxer yes
@set config-mpegtsraw-demuxer yes
@set config-mpegvideo-demuxer yes
@set config-mpl2-demuxer yes
@set config-mpsub-demuxer yes
@set config-msnwc-tcp-demuxer yes
@set config-mtv-demuxer yes
@set config-mv-demuxer yes
@set config-mvi-demuxer yes
@set config-mxf-demuxer yes
@set config-mxg-demuxer yes
@set config-nc-demuxer yes
@set config-nistsphere-demuxer yes
@set config-nsv-demuxer yes
@set config-nut-demuxer yes
@set config-nuv-demuxer yes
@set config-ogg-demuxer yes
@set config-oma-demuxer yes
@set config-paf-demuxer yes
@set config-pcm-alaw-demuxer yes
@set config-pcm-mulaw-demuxer yes
@set config-pcm-f64be-demuxer yes
@set config-pcm-f64le-demuxer yes
@set config-pcm-f32be-demuxer yes
@set config-pcm-f32le-demuxer yes
@set config-pcm-s32be-demuxer yes
@set config-pcm-s32le-demuxer yes
@set config-pcm-s24be-demuxer yes
@set config-pcm-s24le-demuxer yes
@set config-pcm-s16be-demuxer yes
@set config-pcm-s16le-demuxer yes
@set config-pcm-s8-demuxer yes
@set config-pcm-u32be-demuxer yes
@set config-pcm-u32le-demuxer yes
@set config-pcm-u24be-demuxer yes
@set config-pcm-u24le-demuxer yes
@set config-pcm-u16be-demuxer yes
@set config-pcm-u16le-demuxer yes
@set config-pcm-u8-demuxer yes
@set config-pjs-demuxer yes
@set config-pmp-demuxer yes
@set config-pva-demuxer yes
@set config-pvf-demuxer yes
@set config-qcp-demuxer yes
@set config-r3d-demuxer yes
@set config-rawvideo-demuxer yes
@set config-realtext-demuxer yes
@set config-redspark-demuxer yes
@set config-rl2-demuxer yes
@set config-rm-demuxer yes
@set config-roq-demuxer yes
@set config-rpl-demuxer yes
@set config-rsd-demuxer yes
@set config-rso-demuxer yes
@c @set config-rtp-demuxer no
@c @set config-rtsp-demuxer no
@set config-sami-demuxer yes
@c @set config-sap-demuxer no
@set config-sbg-demuxer yes
@c @set config-sdp-demuxer no
@set config-segafilm-demuxer yes
@set config-shorten-demuxer yes
@set config-siff-demuxer yes
@set config-smacker-demuxer yes
@set config-smjpeg-demuxer yes
@set config-smush-demuxer yes
@set config-sol-demuxer yes
@set config-sox-demuxer yes
@set config-spdif-demuxer yes
@set config-srt-demuxer yes
@set config-str-demuxer yes
@set config-subviewer1-demuxer yes
@set config-subviewer-demuxer yes
@set config-swf-demuxer yes
@set config-tak-demuxer yes
@set config-tedcaptions-demuxer yes
@set config-thp-demuxer yes
@set config-tiertexseq-demuxer yes
@set config-tmv-demuxer yes
@set config-truehd-demuxer yes
@set config-tta-demuxer yes
@set config-txd-demuxer yes
@set config-tty-demuxer yes
@set config-vc1-demuxer yes
@set config-vc1t-demuxer yes
@set config-vivo-demuxer yes
@set config-vmd-demuxer yes
@set config-vobsub-demuxer yes
@set config-voc-demuxer yes
@set config-vplayer-demuxer yes
@set config-vqf-demuxer yes
@set config-w64-demuxer yes
@set config-wav-demuxer yes
@set config-wc3-demuxer yes
@set config-webvtt-demuxer yes
@set config-wsaud-demuxer yes
@set config-wsvqa-demuxer yes
@set config-wtv-demuxer yes
@set config-wv-demuxer yes
@set config-xa-demuxer yes
@set config-xbin-demuxer yes
@set config-xmv-demuxer yes
@set config-xwma-demuxer yes
@set config-yop-demuxer yes
@set config-yuv4mpegpipe-demuxer yes
@c @set config-libgme-demuxer no
@c @set config-libmodplug-demuxer no
@c @set config-libnut-demuxer no
@c @set config-libquvi-demuxer no
@c @set config-a64multi-encoder no
@c @set config-a64multi5-encoder no
@c @set config-amv-encoder no
@c @set config-asv1-encoder no
@c @set config-asv2-encoder no
@c @set config-avrp-encoder no
@c @set config-avui-encoder no
@c @set config-ayuv-encoder no
@c @set config-bmp-encoder no
@c @set config-cljr-encoder no
@c @set config-comfortnoise-encoder no
@c @set config-dnxhd-encoder no
@c @set config-dpx-encoder no
@c @set config-dvvideo-encoder no
@c @set config-ffv1-encoder no
@c @set config-ffvhuff-encoder no
@c @set config-flashsv-encoder no
@c @set config-flashsv2-encoder no
@c @set config-flv-encoder no
@c @set config-gif-encoder no
@c @set config-h261-encoder no
@c @set config-h263-encoder no
@c @set config-h263p-encoder no
@c @set config-huffyuv-encoder no
@c @set config-jpeg2000-encoder no
@c @set config-jpegls-encoder no
@c @set config-ljpeg-encoder no
@c @set config-mjpeg-encoder no
@c @set config-mpeg1video-encoder no
@c @set config-mpeg2video-encoder no
@c @set config-mpeg4-encoder no
@c @set config-msmpeg4v2-encoder no
@c @set config-msmpeg4v3-encoder no
@c @set config-msvideo1-encoder no
@c @set config-pam-encoder no
@c @set config-pbm-encoder no
@c @set config-pcx-encoder no
@c @set config-pgm-encoder no
@c @set config-pgmyuv-encoder no
@c @set config-png-encoder no
@c @set config-ppm-encoder no
@c @set config-prores-encoder no
@c @set config-prores-aw-encoder no
@c @set config-prores-ks-encoder no
@c @set config-qtrle-encoder no
@c @set config-r10k-encoder no
@c @set config-r210-encoder no
@c @set config-rawvideo-encoder no
@c @set config-roq-encoder no
@c @set config-rv10-encoder no
@c @set config-rv20-encoder no
@c @set config-s302m-encoder no
@c @set config-sgi-encoder no
@c @set config-snow-encoder no
@c @set config-sunrast-encoder no
@c @set config-svq1-encoder no
@c @set config-targa-encoder no
@c @set config-tiff-encoder no
@c @set config-utvideo-encoder no
@c @set config-v210-encoder no
@c @set config-v308-encoder no
@c @set config-v408-encoder no
@c @set config-v410-encoder no
@c @set config-wmv1-encoder no
@c @set config-wmv2-encoder no
@c @set config-xbm-encoder no
@c @set config-xface-encoder no
@c @set config-xwd-encoder no
@c @set config-y41p-encoder no
@c @set config-yuv4-encoder no
@c @set config-zlib-encoder no
@c @set config-zmbv-encoder no
@c @set config-aac-encoder no
@c @set config-ac3-encoder no
@c @set config-ac3-fixed-encoder no
@c @set config-alac-encoder no
@c @set config-dca-encoder no
@c @set config-eac3-encoder no
@c @set config-flac-encoder no
@c @set config-g723-1-encoder no
@c @set config-mp2-encoder no
@c @set config-nellymoser-encoder no
@c @set config-ra-144-encoder no
@c @set config-sonic-encoder no
@c @set config-sonic-ls-encoder no
@c @set config-tta-encoder no
@c @set config-vorbis-encoder no
@c @set config-wavpack-encoder no
@c @set config-wmav1-encoder no
@c @set config-wmav2-encoder no
@c @set config-pcm-alaw-encoder no
@c @set config-pcm-f32be-encoder no
@c @set config-pcm-f32le-encoder no
@c @set config-pcm-f64be-encoder no
@c @set config-pcm-f64le-encoder no
@c @set config-pcm-mulaw-encoder no
@c @set config-pcm-s8-encoder no
@c @set config-pcm-s8-planar-encoder no
@c @set config-pcm-s16be-encoder no
@c @set config-pcm-s16be-planar-encoder no
@c @set config-pcm-s16le-encoder no
@c @set config-pcm-s16le-planar-encoder no
@c @set config-pcm-s24be-encoder no
@c @set config-pcm-s24daud-encoder no
@c @set config-pcm-s24le-encoder no
@c @set config-pcm-s24le-planar-encoder no
@c @set config-pcm-s32be-encoder no
@c @set config-pcm-s32le-encoder no
@c @set config-pcm-s32le-planar-encoder no
@c @set config-pcm-u8-encoder no
@c @set config-pcm-u16be-encoder no
@c @set config-pcm-u16le-encoder no
@c @set config-pcm-u24be-encoder no
@c @set config-pcm-u24le-encoder no
@c @set config-pcm-u32be-encoder no
@c @set config-pcm-u32le-encoder no
@c @set config-roq-dpcm-encoder no
@c @set config-adpcm-adx-encoder no
@c @set config-adpcm-g722-encoder no
@c @set config-adpcm-g726-encoder no
@c @set config-adpcm-ima-qt-encoder no
@c @set config-adpcm-ima-wav-encoder no
@c @set config-adpcm-ms-encoder no
@c @set config-adpcm-swf-encoder no
@c @set config-adpcm-yamaha-encoder no
@c @set config-ssa-encoder no
@c @set config-ass-encoder no
@c @set config-dvbsub-encoder no
@c @set config-dvdsub-encoder no
@c @set config-movtext-encoder no
@c @set config-srt-encoder no
@c @set config-subrip-encoder no
@c @set config-xsub-encoder no
@c @set config-libfaac-encoder no
@c @set config-libfdk-aac-encoder no
@c @set config-libgsm-encoder no
@c @set config-libgsm-ms-encoder no
@c @set config-libilbc-encoder no
@c @set config-libmp3lame-encoder no
@c @set config-libopencore-amrnb-encoder no
@c @set config-libopenjpeg-encoder no
@c @set config-libopus-encoder no
@c @set config-libschroedinger-encoder no
@c @set config-libshine-encoder no
@c @set config-libspeex-encoder no
@c @set config-libtheora-encoder no
@c @set config-libtwolame-encoder no
@c @set config-libutvideo-encoder no
@c @set config-libvo-aacenc-encoder no
@c @set config-libvo-amrwbenc-encoder no
@c @set config-libvorbis-encoder no
@c @set config-libvpx-vp8-encoder no
@c @set config-libvpx-vp9-encoder no
@c @set config-libwavpack-encoder no
@c @set config-libx264-encoder no
@c @set config-libx264rgb-encoder no
@c @set config-libxavs-encoder no
@c @set config-libxvid-encoder no
@c @set config-libaacplus-encoder no
@set config-aconvert-filter yes
@set config-adelay-filter yes
@set config-aecho-filter yes
@set config-afade-filter yes
@set config-aformat-filter yes
@set config-ainterleave-filter yes
@set config-allpass-filter yes
@set config-amerge-filter yes
@set config-amix-filter yes
@set config-anull-filter yes
@set config-apad-filter yes
@set config-aperms-filter yes
@set config-aphaser-filter yes
@set config-aresample-filter yes
@set config-aselect-filter yes
@set config-asendcmd-filter yes
@set config-asetnsamples-filter yes
@set config-asetpts-filter yes
@set config-asetrate-filter yes
@set config-asettb-filter yes
@set config-ashowinfo-filter yes
@set config-asplit-filter yes
@set config-astats-filter yes
@set config-astreamsync-filter yes
@c @set config-asyncts-filter no
@set config-atempo-filter yes
@set config-atrim-filter yes
@c @set config-azmq-filter no
@set config-bandpass-filter yes
@set config-bandreject-filter yes
@set config-bass-filter yes
@set config-biquad-filter yes
@set config-channelmap-filter yes
@set config-channelsplit-filter yes
@set config-compand-filter yes
@set config-earwax-filter yes
@set config-ebur128-filter yes
@set config-equalizer-filter yes
@set config-highpass-filter yes
@set config-join-filter yes
@c @set config-ladspa-filter no
@set config-lowpass-filter yes
@set config-pan-filter yes
@set config-replaygain-filter yes
@c @set config-resample-filter no
@set config-silencedetect-filter yes
@set config-treble-filter yes
@set config-volume-filter yes
@set config-volumedetect-filter yes
@set config-aevalsrc-filter yes
@set config-anullsrc-filter yes
@c @set config-flite-filter no
@set config-sine-filter yes
@set config-anullsink-filter yes
@set config-alphaextract-filter yes
@set config-alphamerge-filter yes
@c @set config-ass-filter no
@set config-bbox-filter yes
@set config-blackdetect-filter yes
@set config-blackframe-filter yes
@set config-blend-filter yes
@set config-boxblur-filter yes
@set config-colorbalance-filter yes
@set config-colorchannelmixer-filter yes
@set config-colormatrix-filter yes
@set config-copy-filter yes
@set config-crop-filter yes
@set config-cropdetect-filter yes
@set config-curves-filter yes
@set config-dctdnoiz-filter yes
@set config-decimate-filter yes
@set config-delogo-filter yes
@set config-deshake-filter yes
@set config-drawbox-filter yes
@set config-drawgrid-filter yes
@c @set config-drawtext-filter no
@set config-edgedetect-filter yes
@set config-extractplanes-filter yes
@set config-fade-filter yes
@set config-field-filter yes
@set config-fieldmatch-filter yes
@set config-fieldorder-filter yes
@set config-format-filter yes
@set config-fps-filter yes
@set config-framestep-filter yes
@c @set config-frei0r-filter no
@set config-geq-filter yes
@set config-gradfun-filter yes
@set config-haldclut-filter yes
@set config-hflip-filter yes
@set config-histeq-filter yes
@set config-histogram-filter yes
@set config-hqdn3d-filter yes
@set config-hue-filter yes
@set config-idet-filter yes
@set config-il-filter yes
@set config-interlace-filter yes
@set config-interleave-filter yes
@set config-kerndeint-filter yes
@set config-lut3d-filter yes
@set config-lut-filter yes
@set config-lutrgb-filter yes
@set config-lutyuv-filter yes
@set config-mcdeint-filter yes
@set config-mergeplanes-filter yes
@set config-mp-filter yes
@set config-mpdecimate-filter yes
@set config-negate-filter yes
@set config-noformat-filter yes
@set config-noise-filter yes
@set config-null-filter yes
@c @set config-ocv-filter no
@set config-overlay-filter yes
@set config-owdenoise-filter yes
@set config-pad-filter yes
@set config-perms-filter yes
@set config-perspective-filter yes
@set config-phase-filter yes
@set config-pixdesctest-filter yes
@c @set config-pp-filter no
@set config-psnr-filter yes
@set config-pullup-filter yes
@set config-removelogo-filter yes
@set config-rotate-filter yes
@set config-sab-filter yes
@set config-scale-filter yes
@set config-select-filter yes
@set config-sendcmd-filter yes
@set config-separatefields-filter yes
@set config-setdar-filter yes
@set config-setfield-filter yes
@set config-setpts-filter yes
@set config-setsar-filter yes
@set config-settb-filter yes
@set config-showinfo-filter yes
@set config-smartblur-filter yes
@set config-split-filter yes
@set config-spp-filter yes
@set config-stereo3d-filter yes
@c @set config-subtitles-filter no
@set config-super2xsai-filter yes
@set config-swapuv-filter yes
@set config-telecine-filter yes
@set config-thumbnail-filter yes
@set config-tile-filter yes
@set config-tinterlace-filter yes
@set config-transpose-filter yes
@set config-trim-filter yes
@set config-unsharp-filter yes
@set config-vflip-filter yes
@c @set config-vidstabdetect-filter no
@c @set config-vidstabtransform-filter no
@set config-vignette-filter yes
@set config-w3fdif-filter yes
@set config-yadif-filter yes
@c @set config-zmq-filter no
@set config-cellauto-filter yes
@set config-color-filter yes
@c @set config-frei0r-src-filter no
@set config-haldclutsrc-filter yes
@set config-life-filter yes
@set config-mandelbrot-filter yes
@set config-mptestsrc-filter yes
@set config-nullsrc-filter yes
@set config-rgbtestsrc-filter yes
@set config-smptebars-filter yes
@set config-smptehdbars-filter yes
@set config-testsrc-filter yes
@set config-nullsink-filter yes
@set config-avectorscope-filter yes
@set config-concat-filter yes
@set config-showspectrum-filter yes
@set config-showwaves-filter yes
@set config-amovie-filter yes
@set config-movie-filter yes
@c @set config-h263-vaapi-hwaccel no
@c @set config-h263-vdpau-hwaccel no
@c @set config-h264-dxva2-hwaccel no
@c @set config-h264-vaapi-hwaccel no
@c @set config-h264-vda-hwaccel no
@c @set config-h264-vdpau-hwaccel no
@c @set config-mpeg1-vdpau-hwaccel no
@c @set config-mpeg2-dxva2-hwaccel no
@c @set config-mpeg2-vaapi-hwaccel no
@c @set config-mpeg2-vdpau-hwaccel no
@c @set config-mpeg4-vaapi-hwaccel no
@c @set config-mpeg4-vdpau-hwaccel no
@c @set config-vc1-dxva2-hwaccel no
@c @set config-vc1-vaapi-hwaccel no
@c @set config-vc1-vdpau-hwaccel no
@c @set config-wmv3-dxva2-hwaccel no
@c @set config-wmv3-vaapi-hwaccel no
@c @set config-wmv3-vdpau-hwaccel no
@c @set config-alsa-indev no
@c @set config-bktr-indev no
@c @set config-dshow-indev no
@c @set config-dv1394-indev no
@c @set config-fbdev-indev no
@c @set config-iec61883-indev no
@c @set config-jack-indev no
@c @set config-lavfi-indev no
@c @set config-openal-indev no
@c @set config-oss-indev no
@c @set config-pulse-indev no
@c @set config-sndio-indev no
@c @set config-v4l2-indev no
@c @set config-vfwcap-indev no
@c @set config-x11grab-indev no
@c @set config-libcdio-indev no
@c @set config-libdc1394-indev no
@c @set config-a64-muxer no
@c @set config-ac3-muxer no
@c @set config-adts-muxer no
@c @set config-adx-muxer no
@c @set config-aiff-muxer no
@c @set config-amr-muxer no
@c @set config-asf-muxer no
@c @set config-ass-muxer no
@c @set config-ast-muxer no
@c @set config-asf-stream-muxer no
@c @set config-au-muxer no
@c @set config-avi-muxer no
@c @set config-avm2-muxer no
@c @set config-bit-muxer no
@c @set config-caf-muxer no
@c @set config-cavsvideo-muxer no
@c @set config-crc-muxer no
@c @set config-data-muxer no
@c @set config-daud-muxer no
@c @set config-dirac-muxer no
@c @set config-dnxhd-muxer no
@c @set config-dts-muxer no
@c @set config-dv-muxer no
@c @set config-eac3-muxer no
@c @set config-f4v-muxer no
@c @set config-ffm-muxer no
@c @set config-ffmetadata-muxer no
@c @set config-filmstrip-muxer no
@c @set config-flac-muxer no
@c @set config-flv-muxer no
@c @set config-framecrc-muxer no
@c @set config-framemd5-muxer no
@c @set config-g722-muxer no
@c @set config-g723-1-muxer no
@c @set config-gif-muxer no
@c @set config-gxf-muxer no
@c @set config-h261-muxer no
@c @set config-h263-muxer no
@c @set config-h264-muxer no
@c @set config-hls-muxer no
@c @set config-ico-muxer no
@c @set config-ilbc-muxer no
@c @set config-image2-muxer no
@c @set config-image2pipe-muxer no
@c @set config-ipod-muxer no
@c @set config-ircam-muxer no
@c @set config-ismv-muxer no
@c @set config-ivf-muxer no
@c @set config-jacosub-muxer no
@c @set config-latm-muxer no
@c @set config-m4v-muxer no
@c @set config-md5-muxer no
@c @set config-matroska-muxer no
@c @set config-matroska-audio-muxer no
@c @set config-microdvd-muxer no
@c @set config-mjpeg-muxer no
@c @set config-mlp-muxer no
@c @set config-mmf-muxer no
@c @set config-mov-muxer no
@c @set config-mp2-muxer no
@c @set config-mp3-muxer no
@c @set config-mp4-muxer no
@c @set config-mpeg1system-muxer no
@c @set config-mpeg1vcd-muxer no
@c @set config-mpeg1video-muxer no
@c @set config-mpeg2dvd-muxer no
@c @set config-mpeg2svcd-muxer no
@c @set config-mpeg2video-muxer no
@c @set config-mpeg2vob-muxer no
@c @set config-mpegts-muxer no
@c @set config-mpjpeg-muxer no
@c @set config-mxf-muxer no
@c @set config-mxf-d10-muxer no
@c @set config-null-muxer no
@c @set config-nut-muxer no
@c @set config-ogg-muxer no
@c @set config-oma-muxer no
@c @set config-pcm-alaw-muxer no
@c @set config-pcm-mulaw-muxer no
@c @set config-pcm-f64be-muxer no
@c @set config-pcm-f64le-muxer no
@c @set config-pcm-f32be-muxer no
@c @set config-pcm-f32le-muxer no
@c @set config-pcm-s32be-muxer no
@c @set config-pcm-s32le-muxer no
@c @set config-pcm-s24be-muxer no
@c @set config-pcm-s24le-muxer no
@c @set config-pcm-s16be-muxer no
@c @set config-pcm-s16le-muxer no
@c @set config-pcm-s8-muxer no
@c @set config-pcm-u32be-muxer no
@c @set config-pcm-u32le-muxer no
@c @set config-pcm-u24be-muxer no
@c @set config-pcm-u24le-muxer no
@c @set config-pcm-u16be-muxer no
@c @set config-pcm-u16le-muxer no
@c @set config-pcm-u8-muxer no
@c @set config-psp-muxer no
@c @set config-rawvideo-muxer no
@c @set config-rm-muxer no
@c @set config-roq-muxer no
@c @set config-rso-muxer no
@c @set config-rtp-muxer no
@c @set config-rtsp-muxer no
@c @set config-sap-muxer no
@c @set config-segment-muxer no
@c @set config-stream-segment-muxer no
@c @set config-smjpeg-muxer no
@c @set config-smoothstreaming-muxer no
@c @set config-sox-muxer no
@c @set config-spdif-muxer no
@c @set config-srt-muxer no
@c @set config-swf-muxer no
@c @set config-tee-muxer no
@c @set config-tg2-muxer no
@c @set config-tgp-muxer no
@c @set config-mkvtimestamp-v2-muxer no
@c @set config-truehd-muxer no
@c @set config-vc1-muxer no
@c @set config-vc1t-muxer no
@c @set config-voc-muxer no
@c @set config-w64-muxer no
@c @set config-wav-muxer no
@c @set config-webm-muxer no
@c @set config-webvtt-muxer no
@c @set config-wtv-muxer no
@c @set config-wv-muxer no
@c @set config-yuv4mpegpipe-muxer no
@c @set config-libnut-muxer no
@c @set config-alsa-outdev no
@c @set config-caca-outdev no
@c @set config-fbdev-outdev no
@c @set config-oss-outdev no
@c @set config-pulse-outdev no
@c @set config-sdl-outdev no
@c @set config-sndio-outdev no
@c @set config-v4l2-outdev no
@c @set config-xv-outdev no
@set config-aac-parser yes
@set config-aac-latm-parser yes
@set config-ac3-parser yes
@set config-adx-parser yes
@set config-bmp-parser yes
@set config-cavsvideo-parser yes
@set config-cook-parser yes
@set config-dca-parser yes
@set config-dirac-parser yes
@set config-dnxhd-parser yes
@set config-dpx-parser yes
@set config-dvbsub-parser yes
@set config-dvdsub-parser yes
@set config-dvd-nav-parser yes
@set config-flac-parser yes
@set config-gsm-parser yes
@set config-h261-parser yes
@set config-h263-parser yes
@set config-h264-parser yes
@set config-hevc-parser yes
@set config-mjpeg-parser yes
@set config-mlp-parser yes
@set config-mpeg4video-parser yes
@set config-mpegaudio-parser yes
@set config-mpegvideo-parser yes
@set config-png-parser yes
@set config-pnm-parser yes
@set config-rv30-parser yes
@set config-rv40-parser yes
@set config-tak-parser yes
@set config-vc1-parser yes
@set config-vorbis-parser yes
@set config-vp3-parser yes
@set config-vp8-parser yes
@c @set config-bluray-protocol no
@c @set config-cache-protocol no
@c @set config-concat-protocol no
@c @set config-crypto-protocol no
@c @set config-data-protocol no
@c @set config-ffrtmpcrypt-protocol no
@c @set config-ffrtmphttp-protocol no
@set config-file-protocol yes
@c @set config-ftp-protocol no
@c @set config-gopher-protocol no
@c @set config-hls-protocol no
@c @set config-http-protocol no
@c @set config-httpproxy-protocol no
@c @set config-https-protocol no
@c @set config-mmsh-protocol no
@c @set config-mmst-protocol no
@c @set config-md5-protocol no
@c @set config-pipe-protocol no
@c @set config-rtmp-protocol no
@c @set config-rtmpe-protocol no
@c @set config-rtmps-protocol no
@c @set config-rtmpt-protocol no
@c @set config-rtmpte-protocol no
@c @set config-rtmpts-protocol no
@c @set config-rtp-protocol no
@c @set config-sctp-protocol no
@c @set config-srtp-protocol no
@c @set config-tcp-protocol no
@c @set config-tls-protocol no
@c @set config-udp-protocol no
@c @set config-unix-protocol no
@c @set config-librtmp-protocol no
@c @set config-librtmpe-protocol no
@c @set config-librtmps-protocol no
@c @set config-librtmpt-protocol no
@c @set config-librtmpte-protocol no
@c @set config-libssh-protocol no

/contrib/sdk/sources/ffmpeg/doc/decoders.texi
0,0 → 1,202
@chapter Decoders
@c man begin DECODERS
Decoders are configured elements in FFmpeg which allow the decoding of
multimedia streams.
When you configure your FFmpeg build, all the supported native decoders
are enabled by default. Decoders requiring an external library must be enabled
manually via the corresponding @code{--enable-lib} option. You can list all
available decoders using the configure option @code{--list-decoders}.
You can disable all the decoders with the configure option
@code{--disable-decoders} and selectively enable / disable single decoders
with the options @code{--enable-decoder=@var{DECODER}} /
@code{--disable-decoder=@var{DECODER}}.
The option @code{-codecs} of the ff* tools will display the list of
enabled decoders.
@c man end DECODERS
@chapter Video Decoders
@c man begin VIDEO DECODERS
A description of some of the currently available video decoders
follows.
@section rawvideo
Raw video decoder.
This decoder decodes rawvideo streams.
@subsection Options
@table @option
@item top @var{top_field_first}
Specify the assumed field type of the input video.
@table @option
@item -1
the video is assumed to be progressive (default)
@item 0
bottom-field-first is assumed
@item 1
top-field-first is assumed
@end table
@end table
@c man end VIDEO DECODERS
@chapter Audio Decoders
@c man begin AUDIO DECODERS
@section ffwavesynth
Internal wave synthetizer.
This decoder generates wave patterns according to predefined sequences. Its
use is purely internal and the format of the data it accepts is not publicly
documented.
@section libcelt
libcelt decoder wrapper.
libcelt allows libavcodec to decode the Xiph CELT ultra-low delay audio codec.
Requires the presence of the libcelt headers and library during configuration.
You need to explicitly configure the build with @code{--enable-libcelt}.
@section libgsm
libgsm decoder wrapper.
libgsm allows libavcodec to decode the GSM full rate audio codec. Requires
the presence of the libgsm headers and library during configuration. You need
to explicitly configure the build with @code{--enable-libgsm}.
This decoder supports both the ordinary GSM and the Microsoft variant.
@section libilbc
libilbc decoder wrapper.
libilbc allows libavcodec to decode the Internet Low Bitrate Codec (iLBC)
audio codec. Requires the presence of the libilbc headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libilbc}.
@subsection Options
The following option is supported by the libilbc wrapper.
@table @option
@item enhance
Enable the enhancement of the decoded audio when set to 1. The default
value is 0 (disabled).
@end table
@section libopencore-amrnb
libopencore-amrnb decoder wrapper.
libopencore-amrnb allows libavcodec to decode the Adaptive Multi-Rate
Narrowband audio codec. Using it requires the presence of the
libopencore-amrnb headers and library during configuration. You need to
explicitly configure the build with @code{--enable-libopencore-amrnb}.
An FFmpeg native decoder for AMR-NB exists, so users can decode AMR-NB
without this library.
@section libopencore-amrwb
libopencore-amrwb decoder wrapper.
libopencore-amrwb allows libavcodec to decode the Adaptive Multi-Rate
Wideband audio codec. Using it requires the presence of the
libopencore-amrwb headers and library during configuration. You need to
explicitly configure the build with @code{--enable-libopencore-amrwb}.
An FFmpeg native decoder for AMR-WB exists, so users can decode AMR-WB
without this library.
@section libopus
libopus decoder wrapper.
libopus allows libavcodec to decode the Opus Interactive Audio Codec.
Requires the presence of the libopus headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libopus}.
@c man end AUDIO DECODERS
@chapter Subtitles Decoders
@c man begin SUBTILES DECODERS
@section dvdsub
This codec decodes the bitmap subtitles used in DVDs; the same subtitles can
also be found in VobSub file pairs and in some Matroska files.
@subsection Options
@table @option
@item palette
Specify the global palette used by the bitmaps. When stored in VobSub, the
palette is normally specified in the index file; in Matroska, the palette is
stored in the codec extra-data in the same format as in VobSub. In DVDs, the
palette is stored in the IFO file, and therefore not available when reading
from dumped VOB files.
The format for this option is a string containing 16 24-bits hexadecimal
numbers (without 0x prefix) separated by comas, for example @code{0d00ee,
ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}.
@end table
@section libzvbi-teletext
Libzvbi allows libavcodec to decode DVB teletext pages and DVB teletext
subtitles. Requires the presence of the libzvbi headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libzvbi}.
@subsection Options
@table @option
@item txt_page
List of teletext page numbers to decode. You may use the special * string to
match all pages. Pages that do not match the specified list are dropped.
Default value is *.
@item txt_chop_top
Discards the top teletext line. Default value is 1.
@item txt_format
Specifies the format of the decoded subtitles. The teletext decoder is capable
of decoding the teletext pages to bitmaps or to simple text, you should use
"bitmap" for teletext pages, because certain graphics and colors cannot be
expressed in simple text. You might use "text" for teletext based subtitles if
your application can handle simple text based subtitles. Default value is
bitmap.
@item txt_left
X offset of generated bitmaps, default is 0.
@item txt_top
Y offset of generated bitmaps, default is 0.
@item txt_chop_spaces
Chops leading and trailing spaces and removes empty lines from the generated
text. This option is useful for teletext based subtitles where empty spaces may
be present at the start or at the end of the lines or empty lines may be
present between the subtitle lines because of double-sized teletext charactes.
Default value is 1.
@item txt_duration
Sets the display duration of the decoded teletext pages or subtitles in
miliseconds. Default value is 30000 which is 30 seconds.
@item txt_transparent
Force transparent background of the generated teletext bitmaps. Default value
is 0 which means an opaque (black) background.
@end table
@c man end SUBTILES DECODERS

/contrib/sdk/sources/ffmpeg/doc/default.css
0,0 → 1,165
a.summary-letter {
text-decoration: none;
}
a {
color: #2D6198;
}
a:visited {
color: #884488;
}
#banner {
background-color: white;
position: relative;
text-align: center;
}
#banner img {
padding-bottom: 1px;
padding-top: 5px;
}
#body {
margin-left: 1em;
margin-right: 1em;
}
body {
background-color: #313131;
margin: 0;
text-align: justify;
}
.center {
margin-left: auto;
margin-right: auto;
text-align: center;
}
#container {
background-color: white;
color: #202020;
margin-left: 1em;
margin-right: 1em;
}
#footer {
text-align: center;
}
h1 a, h2 a, h3 a, h4 a {
text-decoration: inherit;
color: inherit;
}
h1, h2, h3, h4 {
padding-left: 0.4em;
border-radius: 4px;
padding-bottom: 0.25em;
padding-top: 0.25em;
border: 1px solid #6A996A;
}
h1 {
background-color: #7BB37B;
color: #151515;
font-size: 1.2em;
padding-bottom: 0.3em;
padding-top: 0.3em;
}
h2 {
color: #313131;
font-size: 1.0em;
background-color: #ABE3AB;
}
h3 {
color: #313131;
font-size: 0.9em;
margin-bottom: -6px;
background-color: #BBF3BB;
}
h4 {
color: #313131;
font-size: 0.8em;
margin-bottom: -8px;
background-color: #D1FDD1;
}
img {
border: 0;
}
#navbar {
background-color: #738073;
border-bottom: 1px solid #5C665C;
border-top: 1px solid #5C665C;
margin-top: 12px;
padding: 0.3em;
position: relative;
text-align: center;
}
#navbar a, #navbar_secondary a {
color: white;
padding: 0.3em;
text-decoration: none;
}
#navbar a:hover, #navbar_secondary a:hover {
background-color: #313131;
color: white;
text-decoration: none;
}
#navbar_secondary {
background-color: #738073;
border-bottom: 1px solid #5C665C;
border-left: 1px solid #5C665C;
border-right: 1px solid #5C665C;
padding: 0.3em;
position: relative;
text-align: center;
}
p {
margin-left: 1em;
margin-right: 1em;
}
pre {
margin-left: 3em;
margin-right: 3em;
padding: 0.3em;
border: 1px solid #bbb;
background-color: #f7f7f7;
}
dl dt {
font-weight: bold;
}
#proj_desc {
font-size: 1.2em;
}
#repos {
margin-left: 1em;
margin-right: 1em;
border-collapse: collapse;
border: solid 1px #6A996A;
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#repos th {
background-color: #7BB37B;
border: solid 1px #6A996A;
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#repos td {
padding: 0.2em;
border: solid 1px #6A996A;
}

/contrib/sdk/sources/ffmpeg/doc/demuxers.texi
0,0 → 1,375
@chapter Demuxers
@c man begin DEMUXERS
Demuxers are configured elements in FFmpeg that can read the
multimedia streams from a particular type of file.
When you configure your FFmpeg build, all the supported demuxers
are enabled by default. You can list all available ones using the
configure option @code{--list-demuxers}.
You can disable all the demuxers using the configure option
@code{--disable-demuxers}, and selectively enable a single demuxer with
the option @code{--enable-demuxer=@var{DEMUXER}}, or disable it
with the option @code{--disable-demuxer=@var{DEMUXER}}.
The option @code{-formats} of the ff* tools will display the list of
enabled demuxers.
The description of some of the currently available demuxers follows.
@section applehttp
Apple HTTP Live Streaming demuxer.
This demuxer presents all AVStreams from all variant streams.
The id field is set to the bitrate variant index number. By setting
the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
the caller can decide which variant streams to actually receive.
The total bitrate of the variant that the stream belongs to is
available in a metadata key named "variant_bitrate".
@section asf
Advanced Systems Format demuxer.
This demuxer is used to demux ASF files and MMS network streams.
@table @option
@item -no_resync_search @var{bool}
Do not try to resynchronize by looking for a certain optional start code.
@end table
@anchor{concat}
@section concat
Virtual concatenation script demuxer.
This demuxer reads a list of files and other directives from a text file and
demuxes them one after the other, as if all their packet had been muxed
together.
The timestamps in the files are adjusted so that the first file starts at 0
and each next file starts where the previous one finishes. Note that it is
done globally and may cause gaps if all streams do not have exactly the same
length.
All files must have the same streams (same codecs, same time base, etc.).
The duration of each file is used to adjust the timestamps of the next file:
if the duration is incorrect (because it was computed using the bit-rate or
because the file is truncated, for example), it can cause artifacts. The
@code{duration} directive can be used to override the duration stored in
each file.
@subsection Syntax
The script is a text file in extended-ASCII, with one directive per line.
Empty lines, leading spaces and lines starting with '#' are ignored. The
following directive is recognized:
@table @option
@item @code{file @var{path}}
Path to a file to read; special characters and spaces must be escaped with
backslash or single quotes.
All subsequent directives apply to that file.
@item @code{ffconcat version 1.0}
Identify the script type and version. It also sets the @option{safe} option
to 1 if it was to its default -1.
To make FFmpeg recognize the format automatically, this directive must
appears exactly as is (no extra space or byte-order-mark) on the very first
line of the script.
@item @code{duration @var{dur}}
Duration of the file. This information can be specified from the file;
specifying it here may be more efficient or help if the information from the
file is not available or accurate.
If the duration is set for all files, then it is possible to seek in the
whole concatenated video.
@end table
@subsection Options
This demuxer accepts the following option:
@table @option
@item safe
If set to 1, reject unsafe file paths. A file path is considered safe if it
does not contain a protocol specification and is relative and all components
only contain characters from the portable character set (letters, digits,
period, underscore and hyphen) and have no period at the beginning of a
component.
If set to 0, any file name is accepted.
The default is -1, it is equivalent to 1 if the format was automatically
probed and 0 otherwise.
@end table
@section flv
Adobe Flash Video Format demuxer.
This demuxer is used to demux FLV files and RTMP network streams.
@table @option
@item -flv_metadata @var{bool}
Allocate the streams according to the onMetaData array content.
@end table
@section libgme
The Game Music Emu library is a collection of video game music file emulators.
See @url{http://code.google.com/p/game-music-emu/} for more information.
Some files have multiple tracks. The demuxer will pick the first track by
default. The @option{track_index} option can be used to select a different
track. Track indexes start at 0. The demuxer exports the number of tracks as
@var{tracks} meta data entry.
For very large files, the @option{max_size} option may have to be adjusted.
@section libquvi
Play media from Internet services using the quvi project.
The demuxer accepts a @option{format} option to request a specific quality. It
is by default set to @var{best}.
See @url{http://quvi.sourceforge.net/} for more information.
FFmpeg needs to be built with @code{--enable-libquvi} for this demuxer to be
enabled.
@section image2
Image file demuxer.
This demuxer reads from a list of image files specified by a pattern.
The syntax and meaning of the pattern is specified by the
option @var{pattern_type}.
The pattern may contain a suffix which is used to automatically
determine the format of the images contained in the files.
The size, the pixel format, and the format of each image must be the
same for all the files in the sequence.
This demuxer accepts the following options:
@table @option
@item framerate
Set the frame rate for the video stream. It defaults to 25.
@item loop
If set to 1, loop over the input. Default value is 0.
@item pattern_type
Select the pattern type used to interpret the provided filename.
@var{pattern_type} accepts one of the following values.
@table @option
@item sequence
Select a sequence pattern type, used to specify a sequence of files
indexed by sequential numbers.
A sequence pattern may contain the string "%d" or "%0@var{N}d", which
specifies the position of the characters representing a sequential
number in each filename matched by the pattern. If the form
"%d0@var{N}d" is used, the string representing the number in each
filename is 0-padded and @var{N} is the total number of 0-padded
digits representing the number. The literal character '%' can be
specified in the pattern with the string "%%".
If the sequence pattern contains "%d" or "%0@var{N}d", the first filename of
the file list specified by the pattern must contain a number
inclusively contained between @var{start_number} and
@var{start_number}+@var{start_number_range}-1, and all the following
numbers must be sequential.
For example the pattern "img-%03d.bmp" will match a sequence of
filenames of the form @file{img-001.bmp}, @file{img-002.bmp}, ...,
@file{img-010.bmp}, etc.; the pattern "i%%m%%g-%d.jpg" will match a
sequence of filenames of the form @file{i%m%g-1.jpg},
@file{i%m%g-2.jpg}, ..., @file{i%m%g-10.jpg}, etc.
Note that the pattern must not necessarily contain "%d" or
"%0@var{N}d", for example to convert a single image file
@file{img.jpeg} you can employ the command:
@example
ffmpeg -i img.jpeg img.png
@end example
@item glob
Select a glob wildcard pattern type.
The pattern is interpreted like a @code{glob()} pattern. This is only
selectable if libavformat was compiled with globbing support.
@item glob_sequence @emph{(deprecated, will be removed)}
Select a mixed glob wildcard/sequence pattern.
If your version of libavformat was compiled with globbing support, and
the provided pattern contains at least one glob meta character among
@code{%*?[]@{@}} that is preceded by an unescaped "%", the pattern is
interpreted like a @code{glob()} pattern, otherwise it is interpreted
like a sequence pattern.
All glob special characters @code{%*?[]@{@}} must be prefixed
with "%". To escape a literal "%" you shall use "%%".
For example the pattern @code{foo-%*.jpeg} will match all the
filenames prefixed by "foo-" and terminating with ".jpeg", and
@code{foo-%?%?%?.jpeg} will match all the filenames prefixed with
"foo-", followed by a sequence of three characters, and terminating
with ".jpeg".
This pattern type is deprecated in favor of @var{glob} and
@var{sequence}.
@end table
Default value is @var{glob_sequence}.
@item pixel_format
Set the pixel format of the images to read. If not specified the pixel
format is guessed from the first image file in the sequence.
@item start_number
Set the index of the file matched by the image file pattern to start
to read from. Default value is 0.
@item start_number_range
Set the index interval range to check when looking for the first image
file in the sequence, starting from @var{start_number}. Default value
is 5.
@item ts_from_file
If set to 1, will set frame timestamp to modification time of image file. Note
that monotonity of timestamps is not provided: images go in the same order as
without this option. Default value is 0.
@item video_size
Set the video size of the images to read. If not specified the video
size is guessed from the first image file in the sequence.
@end table
@subsection Examples
@itemize
@item
Use @command{ffmpeg} for creating a video from the images in the file
sequence @file{img-001.jpeg}, @file{img-002.jpeg}, ..., assuming an
input frame rate of 10 frames per second:
@example
ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv
@end example
@item
As above, but start by reading from a file with index 100 in the sequence:
@example
ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv
@end example
@item
Read images matching the "*.png" glob pattern , that is all the files
terminating with the ".png" suffix:
@example
ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
@end example
@end itemize
@section mpegts
MPEG-2 transport stream demuxer.
@table @option
@item fix_teletext_pts
Overrides teletext packet PTS and DTS values with the timestamps calculated
from the PCR of the first program which the teletext stream is part of and is
not discarded. Default value is 1, set this option to 0 if you want your
teletext packet PTS and DTS values untouched.
@end table
@section rawvideo
Raw video demuxer.
This demuxer allows to read raw video data. Since there is no header
specifying the assumed video parameters, the user must specify them
in order to be able to decode the data correctly.
This demuxer accepts the following options:
@table @option
@item framerate
Set input video frame rate. Default value is 25.
@item pixel_format
Set the input video pixel format. Default value is @code{yuv420p}.
@item video_size
Set the input video size. This value must be specified explicitly.
@end table
For example to read a rawvideo file @file{input.raw} with
@command{ffplay}, assuming a pixel format of @code{rgb24}, a video
size of @code{320x240}, and a frame rate of 10 images per second, use
the command:
@example
ffplay -f rawvideo -pixel_format rgb24 -video_size 320x240 -framerate 10 input.raw
@end example
@section sbg
SBaGen script demuxer.
This demuxer reads the script language used by SBaGen
@url{http://uazu.net/sbagen/} to generate binaural beats sessions. A SBG
script looks like that:
@example
-SE
a: 300-2.5/3 440+4.5/0
b: 300-2.5/0 440+4.5/3
off: -
NOW == a
+0:07:00 == b
+0:14:00 == a
+0:21:00 == b
+0:30:00 off
@end example
A SBG script can mix absolute and relative timestamps. If the script uses
either only absolute timestamps (including the script start time) or only
relative ones, then its layout is fixed, and the conversion is
straightforward. On the other hand, if the script mixes both kind of
timestamps, then the @var{NOW} reference for relative timestamps will be
taken from the current time of day at the time the script is read, and the
script layout will be frozen according to that reference. That means that if
the script is directly played, the actual times will match the absolute
timestamps up to the sound controller's clock accuracy, but if the user
somehow pauses the playback or seeks, all times will be shifted accordingly.
@section tedcaptions
JSON captions used for @url{http://www.ted.com/, TED Talks}.
TED does not provide links to the captions, but they can be guessed from the
page. The file @file{tools/bookmarklets.html} from the FFmpeg source tree
contains a bookmarklet to expose them.
This demuxer accepts the following option:
@table @option
@item start_time
Set the start time of the TED talk, in milliseconds. The default is 15000
(15s). It is used to sync the captions with the downloadable videos, because
they include a 15s intro.
@end table
Example: convert the captions to a format most players understand:
@example
ffmpeg -i http://www.ted.com/talks/subtitles/id/1/lang/en talk1-en.srt
@end example
@c man end DEMUXERS

/contrib/sdk/sources/ffmpeg/doc/developer.texi
0,0 → 1,797
\input texinfo @c -*- texinfo -*-
@settitle Developer Documentation
@titlepage
@center @titlefont{Developer Documentation}
@end titlepage
@top
@contents
@chapter Developers Guide
@section Notes for external developers
This document is mostly useful for internal FFmpeg developers.
External developers who need to use the API in their application should
refer to the API doxygen documentation in the public headers, and
check the examples in @file{doc/examples} and in the source code to
see how the public API is employed.
You can use the FFmpeg libraries in your commercial program, but you
are encouraged to @emph{publish any patch you make}. In this case the
best way to proceed is to send your patches to the ffmpeg-devel
mailing list following the guidelines illustrated in the remainder of
this document.
For more detailed legal information about the use of FFmpeg in
external programs read the @file{LICENSE} file in the source tree and
consult @url{http://ffmpeg.org/legal.html}.
@section Contributing
There are 3 ways by which code gets into ffmpeg.
@itemize @bullet
@item Submitting Patches to the main developer mailing list
see @ref{Submitting patches} for details.
@item Directly committing changes to the main tree.
@item Committing changes to a git clone, for example on github.com or
gitorious.org. And asking us to merge these changes.
@end itemize
Whichever way, changes should be reviewed by the maintainer of the code
before they are committed. And they should follow the @ref{Coding Rules}.
The developer making the commit and the author are responsible for their changes
and should try to fix issues their commit causes.
@anchor{Coding Rules}
@section Coding Rules
@subsection Code formatting conventions
There are the following guidelines regarding the indentation in files:
@itemize @bullet
@item
Indent size is 4.
@item
The TAB character is forbidden outside of Makefiles as is any
form of trailing whitespace. Commits containing either will be
rejected by the git repository.
@item
You should try to limit your code lines to 80 characters; however, do so if
and only if this improves readability.
@end itemize
The presentation is one inspired by 'indent -i4 -kr -nut'.
The main priority in FFmpeg is simplicity and small code size in order to
minimize the bug count.
@subsection Comments
Use the JavaDoc/Doxygen format (see examples below) so that code documentation
can be generated automatically. All nontrivial functions should have a comment
above them explaining what the function does, even if it is just one sentence.
All structures and their member variables should be documented, too.
Avoid Qt-style and similar Doxygen syntax with @code{!} in it, i.e. replace
@code{//!} with @code{///} and similar. Also @@ syntax should be employed
for markup commands, i.e. use @code{@@param} and not @code{\param}.
@example
/**
* @@file
* MPEG codec.
* @@author ...
*/
/**
* Summary sentence.
* more text ...
* ...
*/
typedef struct Foobar@{
int var1; /**< var1 description */
int var2; ///< var2 description
/** var3 description */
int var3;
@} Foobar;
/**
* Summary sentence.
* more text ...
* ...
* @@param my_parameter description of my_parameter
* @@return return value description
*/
int myfunc(int my_parameter)
...
@end example
@subsection C language features
FFmpeg is programmed in the ISO C90 language with a few additional
features from ISO C99, namely:
@itemize @bullet
@item
the @samp{inline} keyword;
@item
@samp{//} comments;
@item
designated struct initializers (@samp{struct s x = @{ .i = 17 @};})
@item
compound literals (@samp{x = (struct s) @{ 17, 23 @};})
@end itemize
These features are supported by all compilers we care about, so we will not
accept patches to remove their use unless they absolutely do not impair
clarity and performance.
All code must compile with recent versions of GCC and a number of other
currently supported compilers. To ensure compatibility, please do not use
additional C99 features or GCC extensions. Especially watch out for:
@itemize @bullet
@item
mixing statements and declarations;
@item
@samp{long long} (use @samp{int64_t} instead);
@item
@samp{__attribute__} not protected by @samp{#ifdef __GNUC__} or similar;
@item
GCC statement expressions (@samp{(x = (@{ int y = 4; y; @})}).
@end itemize
@subsection Naming conventions
All names should be composed with underscores (_), not CamelCase. For example,
@samp{avfilter_get_video_buffer} is an acceptable function name and
@samp{AVFilterGetVideo} is not. The exception from this are type names, like
for example structs and enums; they should always be in the CamelCase
There are the following conventions for naming variables and functions:
@itemize @bullet
@item
For local variables no prefix is required.
@item
For file-scope variables and functions declared as @code{static}, no prefix
is required.
@item
For variables and functions visible outside of file scope, but only used
internally by a library, an @code{ff_} prefix should be used,
e.g. @samp{ff_w64_demuxer}.
@item
For variables and functions visible outside of file scope, used internally
across multiple libraries, use @code{avpriv_} as prefix, for example,
@samp{avpriv_aac_parse_header}.
@item
Each library has its own prefix for public symbols, in addition to the
commonly used @code{av_} (@code{avformat_} for libavformat,
@code{avcodec_} for libavcodec, @code{swr_} for libswresample, etc).
Check the existing code and choose names accordingly.
Note that some symbols without these prefixes are also exported for
retro-compatibility reasons. These exceptions are declared in the
@code{lib<name>/lib<name>.v} files.
@end itemize
Furthermore, name space reserved for the system should not be invaded.
Identifiers ending in @code{_t} are reserved by
@url{http://pubs.opengroup.org/onlinepubs/007904975/functions/xsh_chap02_02.html#tag_02_02_02, POSIX}.
Also avoid names starting with @code{__} or @code{_} followed by an uppercase
letter as they are reserved by the C standard. Names starting with @code{_}
are reserved at the file level and may not be used for externally visible
symbols. If in doubt, just avoid names starting with @code{_} altogether.
@subsection Miscellaneous conventions
@itemize @bullet
@item
fprintf and printf are forbidden in libavformat and libavcodec,
please use av_log() instead.
@item
Casts should be used only when necessary. Unneeded parentheses
should also be avoided if they don't make the code easier to understand.
@end itemize
@subsection Editor configuration
In order to configure Vim to follow FFmpeg formatting conventions, paste
the following snippet into your @file{.vimrc}:
@example
" indentation rules for FFmpeg: 4 spaces, no tabs
set expandtab
set shiftwidth=4
set softtabstop=4
set cindent
set cinoptions=(0
" Allow tabs in Makefiles.
autocmd FileType make,automake set noexpandtab shiftwidth=8 softtabstop=8
" Trailing whitespace and tabs are forbidden, so highlight them.
highlight ForbiddenWhitespace ctermbg=red guibg=red
match ForbiddenWhitespace /\s\+$\|\t/
" Do not highlight spaces at the end of line while typing on that line.
autocmd InsertEnter * match ForbiddenWhitespace /\t\|\s\+\%#\@@<!$/
@end example
For Emacs, add these roughly equivalent lines to your @file{.emacs.d/init.el}:
@example
(c-add-style "ffmpeg"
'("k&r"
(c-basic-offset . 4)
(indent-tabs-mode . nil)
(show-trailing-whitespace . t)
(c-offsets-alist
(statement-cont . (c-lineup-assignments +)))
)
)
(setq c-default-style "ffmpeg")
@end example
@section Development Policy
@enumerate
@item
Contributions should be licensed under the
@uref{http://www.gnu.org/licenses/lgpl-2.1.html, LGPL 2.1},
including an "or any later version" clause, or, if you prefer
a gift-style license, the
@uref{http://www.isc.org/software/license/, ISC} or
@uref{http://mit-license.org/, MIT} license.
@uref{http://www.gnu.org/licenses/gpl-2.0.html, GPL 2} including
an "or any later version" clause is also acceptable, but LGPL is
preferred.
If you add a new file, give it a proper license header. Do not copy and
paste it from a random place, use an existing file as template.
@item
You must not commit code which breaks FFmpeg! (Meaning unfinished but
enabled code which breaks compilation or compiles but does not work or
breaks the regression tests)
You can commit unfinished stuff (for testing etc), but it must be disabled
(#ifdef etc) by default so it does not interfere with other developers'
work.
@item
The commit message should have a short first line in the form of
a @samp{topic: short description} as a header, separated by a newline
from the body consisting of an explanation of why the change is necessary.
If the commit fixes a known bug on the bug tracker, the commit message
should include its bug ID. Referring to the issue on the bug tracker does
not exempt you from writing an excerpt of the bug in the commit message.
@item
You do not have to over-test things. If it works for you, and you think it
should work for others, then commit. If your code has problems
(portability, triggers compiler bugs, unusual environment etc) they will be
reported and eventually fixed.
@item
Do not commit unrelated changes together, split them into self-contained
pieces. Also do not forget that if part B depends on part A, but A does not
depend on B, then A can and should be committed first and separate from B.
Keeping changes well split into self-contained parts makes reviewing and
understanding them on the commit log mailing list easier. This also helps
in case of debugging later on.
Also if you have doubts about splitting or not splitting, do not hesitate to
ask/discuss it on the developer mailing list.
@item
Do not change behavior of the programs (renaming options etc) or public
API or ABI without first discussing it on the ffmpeg-devel mailing list.
Do not remove functionality from the code. Just improve!
Note: Redundant code can be removed.
@item
Do not commit changes to the build system (Makefiles, configure script)
which change behavior, defaults etc, without asking first. The same
applies to compiler warning fixes, trivial looking fixes and to code
maintained by other developers. We usually have a reason for doing things
the way we do. Send your changes as patches to the ffmpeg-devel mailing
list, and if the code maintainers say OK, you may commit. This does not
apply to files you wrote and/or maintain.
@item
We refuse source indentation and other cosmetic changes if they are mixed
with functional changes, such commits will be rejected and removed. Every
developer has his own indentation style, you should not change it. Of course
if you (re)write something, you can use your own style, even though we would
prefer if the indentation throughout FFmpeg was consistent (Many projects
force a given indentation style - we do not.). If you really need to make
indentation changes (try to avoid this), separate them strictly from real
changes.
NOTE: If you had to put if()@{ .. @} over a large (> 5 lines) chunk of code,
then either do NOT change the indentation of the inner part within (do not
move it to the right)! or do so in a separate commit
@item
Always fill out the commit log message. Describe in a few lines what you
changed and why. You can refer to mailing list postings if you fix a
particular bug. Comments such as "fixed!" or "Changed it." are unacceptable.
Recommended format:
area changed: Short 1 line description
details describing what and why and giving references.
@item
Make sure the author of the commit is set correctly. (see git commit --author)
If you apply a patch, send an
answer to ffmpeg-devel (or wherever you got the patch from) saying that
you applied the patch.
@item
When applying patches that have been discussed (at length) on the mailing
list, reference the thread in the log message.
@item
Do NOT commit to code actively maintained by others without permission.
Send a patch to ffmpeg-devel instead. If no one answers within a reasonable
timeframe (12h for build failures and security fixes, 3 days small changes,
1 week for big patches) then commit your patch if you think it is OK.
Also note, the maintainer can simply ask for more time to review!
@item
Subscribe to the ffmpeg-cvslog mailing list. The diffs of all commits
are sent there and reviewed by all the other developers. Bugs and possible
improvements or general questions regarding commits are discussed there. We
expect you to react if problems with your code are uncovered.
@item
Update the documentation if you change behavior or add features. If you are
unsure how best to do this, send a patch to ffmpeg-devel, the documentation
maintainer(s) will review and commit your stuff.
@item
Try to keep important discussions and requests (also) on the public
developer mailing list, so that all developers can benefit from them.
@item
Never write to unallocated memory, never write over the end of arrays,
always check values read from some untrusted source before using them
as array index or other risky things.
@item
Remember to check if you need to bump versions for the specific libav*
parts (libavutil, libavcodec, libavformat) you are changing. You need
to change the version integer.
Incrementing the first component means no backward compatibility to
previous versions (e.g. removal of a function from the public API).
Incrementing the second component means backward compatible change
(e.g. addition of a function to the public API or extension of an
existing data structure).
Incrementing the third component means a noteworthy binary compatible
change (e.g. encoder bug fix that matters for the decoder). The third
component always starts at 100 to distinguish FFmpeg from Libav.
@item
Compiler warnings indicate potential bugs or code with bad style. If a type of
warning always points to correct and clean code, that warning should
be disabled, not the code changed.
Thus the remaining warnings can either be bugs or correct code.
If it is a bug, the bug has to be fixed. If it is not, the code should
be changed to not generate a warning unless that causes a slowdown
or obfuscates the code.
@item
Make sure that no parts of the codebase that you maintain are missing from the
@file{MAINTAINERS} file. If something that you want to maintain is missing add it with
your name after it.
If at some point you no longer want to maintain some code, then please help
finding a new maintainer and also don't forget updating the @file{MAINTAINERS} file.
@end enumerate
We think our rules are not too hard. If you have comments, contact us.
@anchor{Submitting patches}
@section Submitting patches
First, read the @ref{Coding Rules} above if you did not yet, in particular
the rules regarding patch submission.
When you submit your patch, please use @code{git format-patch} or
@code{git send-email}. We cannot read other diffs :-)
Also please do not submit a patch which contains several unrelated changes.
Split it into separate, self-contained pieces. This does not mean splitting
file by file. Instead, make the patch as small as possible while still
keeping it as a logical unit that contains an individual change, even
if it spans multiple files. This makes reviewing your patches much easier
for us and greatly increases your chances of getting your patch applied.
Use the patcheck tool of FFmpeg to check your patch.
The tool is located in the tools directory.
Run the @ref{Regression tests} before submitting a patch in order to verify
it does not cause unexpected problems.
It also helps quite a bit if you tell us what the patch does (for example
'replaces lrint by lrintf'), and why (for example '*BSD isn't C99 compliant
and has no lrint()')
Also please if you send several patches, send each patch as a separate mail,
do not attach several unrelated patches to the same mail.
Patches should be posted to the
@uref{http://lists.ffmpeg.org/mailman/listinfo/ffmpeg-devel, ffmpeg-devel}
mailing list. Use @code{git send-email} when possible since it will properly
send patches without requiring extra care. If you cannot, then send patches
as base64-encoded attachments, so your patch is not trashed during
transmission.
Your patch will be reviewed on the mailing list. You will likely be asked
to make some changes and are expected to send in an improved version that
incorporates the requests from the review. This process may go through
several iterations. Once your patch is deemed good enough, some developer
will pick it up and commit it to the official FFmpeg tree.
Give us a few days to react. But if some time passes without reaction,
send a reminder by email. Your patch should eventually be dealt with.
@section New codecs or formats checklist
@enumerate
@item
Did you use av_cold for codec initialization and close functions?
@item
Did you add a long_name under NULL_IF_CONFIG_SMALL to the AVCodec or
AVInputFormat/AVOutputFormat struct?
@item
Did you bump the minor version number (and reset the micro version
number) in @file{libavcodec/version.h} or @file{libavformat/version.h}?
@item
Did you register it in @file{allcodecs.c} or @file{allformats.c}?
@item
Did you add the AVCodecID to @file{avcodec.h}?
When adding new codec IDs, also add an entry to the codec descriptor
list in @file{libavcodec/codec_desc.c}.
@item
If it has a FourCC, did you add it to @file{libavformat/riff.c},
even if it is only a decoder?
@item
Did you add a rule to compile the appropriate files in the Makefile?
Remember to do this even if you're just adding a format to a file that is
already being compiled by some other rule, like a raw demuxer.
@item
Did you add an entry to the table of supported formats or codecs in
@file{doc/general.texi}?
@item
Did you add an entry in the Changelog?
@item
If it depends on a parser or a library, did you add that dependency in
configure?
@item
Did you @code{git add} the appropriate files before committing?
@item
Did you make sure it compiles standalone, i.e. with
@code{configure --disable-everything --enable-decoder=foo}
(or @code{--enable-demuxer} or whatever your component is)?
@end enumerate
@section patch submission checklist
@enumerate
@item
Does @code{make fate} pass with the patch applied?
@item
Was the patch generated with git format-patch or send-email?
@item
Did you sign off your patch? (git commit -s)
See @url{http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob_plain;f=Documentation/SubmittingPatches} for the meaning
of sign off.
@item
Did you provide a clear git commit log message?
@item
Is the patch against latest FFmpeg git master branch?
@item
Are you subscribed to ffmpeg-devel?
(the list is subscribers only due to spam)
@item
Have you checked that the changes are minimal, so that the same cannot be
achieved with a smaller patch and/or simpler final code?
@item
If the change is to speed critical code, did you benchmark it?
@item
If you did any benchmarks, did you provide them in the mail?
@item
Have you checked that the patch does not introduce buffer overflows or
other security issues?
@item
Did you test your decoder or demuxer against damaged data? If no, see
tools/trasher, the noise bitstream filter, and
@uref{http://caca.zoy.org/wiki/zzuf, zzuf}. Your decoder or demuxer
should not crash, end in a (near) infinite loop, or allocate ridiculous
amounts of memory when fed damaged data.
@item
Does the patch not mix functional and cosmetic changes?
@item
Did you add tabs or trailing whitespace to the code? Both are forbidden.
@item
Is the patch attached to the email you send?
@item
Is the mime type of the patch correct? It should be text/x-diff or
text/x-patch or at least text/plain and not application/octet-stream.
@item
If the patch fixes a bug, did you provide a verbose analysis of the bug?
@item
If the patch fixes a bug, did you provide enough information, including
a sample, so the bug can be reproduced and the fix can be verified?
Note please do not attach samples >100k to mails but rather provide a
URL, you can upload to ftp://upload.ffmpeg.org
@item
Did you provide a verbose summary about what the patch does change?
@item
Did you provide a verbose explanation why it changes things like it does?
@item
Did you provide a verbose summary of the user visible advantages and
disadvantages if the patch is applied?
@item
Did you provide an example so we can verify the new feature added by the
patch easily?
@item
If you added a new file, did you insert a license header? It should be
taken from FFmpeg, not randomly copied and pasted from somewhere else.
@item
You should maintain alphabetical order in alphabetically ordered lists as
long as doing so does not break API/ABI compatibility.
@item
Lines with similar content should be aligned vertically when doing so
improves readability.
@item
Consider to add a regression test for your code.
@item
If you added YASM code please check that things still work with --disable-yasm
@item
Make sure you check the return values of function and return appropriate
error codes. Especially memory allocation functions like @code{av_malloc()}
are notoriously left unchecked, which is a serious problem.
@item
Test your code with valgrind and or Address Sanitizer to ensure it's free
of leaks, out of array accesses, etc.
@end enumerate
@section Patch review process
All patches posted to ffmpeg-devel will be reviewed, unless they contain a
clear note that the patch is not for the git master branch.
Reviews and comments will be posted as replies to the patch on the
mailing list. The patch submitter then has to take care of every comment,
that can be by resubmitting a changed patch or by discussion. Resubmitted
patches will themselves be reviewed like any other patch. If at some point
a patch passes review with no comments then it is approved, that can for
simple and small patches happen immediately while large patches will generally
have to be changed and reviewed many times before they are approved.
After a patch is approved it will be committed to the repository.
We will review all submitted patches, but sometimes we are quite busy so
especially for large patches this can take several weeks.
If you feel that the review process is too slow and you are willing to try to
take over maintainership of the area of code you change then just clone
git master and maintain the area of code there. We will merge each area from
where its best maintained.
When resubmitting patches, please do not make any significant changes
not related to the comments received during review. Such patches will
be rejected. Instead, submit significant changes or new features as
separate patches.
@anchor{Regression tests}
@section Regression tests
Before submitting a patch (or committing to the repository), you should at least
test that you did not break anything.
Running 'make fate' accomplishes this, please see @url{fate.html} for details.
[Of course, some patches may change the results of the regression tests. In
this case, the reference results of the regression tests shall be modified
accordingly].
@subsection Adding files to the fate-suite dataset
When there is no muxer or encoder available to generate test media for a
specific test then the media has to be inlcuded in the fate-suite.
First please make sure that the sample file is as small as possible to test the
respective decoder or demuxer sufficiently. Large files increase network
bandwidth and disk space requirements.
Once you have a working fate test and fate sample, provide in the commit
message or introductionary message for the patch series that you post to
the ffmpeg-devel mailing list, a direct link to download the sample media.
@subsection Visualizing Test Coverage
The FFmpeg build system allows visualizing the test coverage in an easy
manner with the coverage tools @code{gcov}/@code{lcov}. This involves
the following steps:
@enumerate
@item
Configure to compile with instrumentation enabled:
@code{configure --toolchain=gcov}.
@item
Run your test case, either manually or via FATE. This can be either
the full FATE regression suite, or any arbitrary invocation of any
front-end tool provided by FFmpeg, in any combination.
@item
Run @code{make lcov} to generate coverage data in HTML format.
@item
View @code{lcov/index.html} in your preferred HTML viewer.
@end enumerate
You can use the command @code{make lcov-reset} to reset the coverage
measurements. You will need to rerun @code{make lcov} after running a
new test.
@subsection Using Valgrind
The configure script provides a shortcut for using valgrind to spot bugs
related to memory handling. Just add the option
@code{--toolchain=valgrind-memcheck} or @code{--toolchain=valgrind-massif}
to your configure line, and reasonable defaults will be set for running
FATE under the supervision of either the @strong{memcheck} or the
@strong{massif} tool of the valgrind suite.
In case you need finer control over how valgrind is invoked, use the
@code{--target-exec='valgrind <your_custom_valgrind_options>} option in
your configure line instead.
@anchor{Release process}
@section Release process
FFmpeg maintains a set of @strong{release branches}, which are the
recommended deliverable for system integrators and distributors (such as
Linux distributions, etc.). At regular times, a @strong{release
manager} prepares, tests and publishes tarballs on the
@url{http://ffmpeg.org} website.
There are two kinds of releases:
@enumerate
@item
@strong{Major releases} always include the latest and greatest
features and functionality.
@item
@strong{Point releases} are cut from @strong{release} branches,
which are named @code{release/X}, with @code{X} being the release
version number.
@end enumerate
Note that we promise to our users that shared libraries from any FFmpeg
release never break programs that have been @strong{compiled} against
previous versions of @strong{the same release series} in any case!
However, from time to time, we do make API changes that require adaptations
in applications. Such changes are only allowed in (new) major releases and
require further steps such as bumping library version numbers and/or
adjustments to the symbol versioning file. Please discuss such changes
on the @strong{ffmpeg-devel} mailing list in time to allow forward planning.
@anchor{Criteria for Point Releases}
@subsection Criteria for Point Releases
Changes that match the following criteria are valid candidates for
inclusion into a point release:
@enumerate
@item
Fixes a security issue, preferably identified by a @strong{CVE
number} issued by @url{http://cve.mitre.org/}.
@item
Fixes a documented bug in @url{https://trac.ffmpeg.org}.
@item
Improves the included documentation.
@item
Retains both source code and binary compatibility with previous
point releases of the same release branch.
@end enumerate
The order for checking the rules is (1 OR 2 OR 3) AND 4.
@subsection Release Checklist
The release process involves the following steps:
@enumerate
@item
Ensure that the @file{RELEASE} file contains the version number for
the upcoming release.
@item
Add the release at @url{https://trac.ffmpeg.org/admin/ticket/versions}.
@item
Announce the intent to do a release to the mailing list.
@item
Make sure all relevant security fixes have been backported. See
@url{https://ffmpeg.org/security.html}.
@item
Ensure that the FATE regression suite still passes in the release
branch on at least @strong{i386} and @strong{amd64}
(cf. @ref{Regression tests}).
@item
Prepare the release tarballs in @code{bz2} and @code{gz} formats, and
supplementing files that contain @code{gpg} signatures
@item
Publish the tarballs at @url{http://ffmpeg.org/releases}. Create and
push an annotated tag in the form @code{nX}, with @code{X}
containing the version number.
@item
Propose and send a patch to the @strong{ffmpeg-devel} mailing list
with a news entry for the website.
@item
Publish the news entry.
@item
Send announcement to the mailing list.
@end enumerate
@bye

/contrib/sdk/sources/ffmpeg/doc/devices.texi
0,0 → 1,21
@chapter Device Options
@c man begin DEVICE OPTIONS
The libavdevice library provides the same interface as
libavformat. Namely, an input device is considered like a demuxer, and
an output device like a muxer, and the interface and generic device
options are the same provided by libavformat (see the ffmpeg-formats
manual).
In addition each input or output device may support so-called private
options, which are specific for that component.
Options may be set by specifying -@var{option} @var{value} in the
FFmpeg tools, or by setting the value explicitly in the device
@code{AVFormatContext} options or using the @file{libavutil/opt.h} API
for programmatic use.
@c man end DEVICE OPTIONS
@include indevs.texi
@include outdevs.texi

/contrib/sdk/sources/ffmpeg/doc/doxy/doxy_stylesheet.css
0,0 → 1,2019
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* Copyright 2012 Twitter, Inc
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* Designed and built with all the love in the world @twitter by @mdo and @fat.
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border-radius: 0 4px 4px 0;
}
.tabs-right > .tablist-tabs > li > a:hover {
border-color: #eeeeee #eeeeee #eeeeee #dddddd;
}
.tabs-right > .tablist-tabs .current > a,
.tabs-right > .tablist-tabs .current > a:hover {
border-color: #ddd #ddd #ddd transparent;
*border-left-color: #ffffff;
}
.tablist > .disabled > a {
color: #999999;
}
.tablist > .disabled > a:hover {
text-decoration: none;
background-color: transparent;
cursor: default;
}
.tablistbar {
overflow: visible;
margin-bottom: 20px;
color: #ffffff;
*position: relative;
*z-index: 2;
}
.tablistbar-inner {
min-height: 40px;
padding-left: 20px;
padding-right: 20px;
background-color: #034c03;
background-image: -moz-linear-gradient(top, #024002, #045f04);
background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#024002), to(#045f04));
background-image: -webkit-linear-gradient(top, #024002, #045f04);
background-image: -o-linear-gradient(top, #024002, #045f04);
background-image: linear-gradient(to bottom, #024002, #045f04);
background-repeat: repeat-x;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff024002', endColorstr='#ff045f04', GradientType=0);
border: 1px solid #022402;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
-webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);
-moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);
*zoom: 1;
}
.tablistbar-inner:before,
.tablistbar-inner:after {
display: table;
content: "";
line-height: 0;
}
.tablistbar-inner:after {
clear: both;
}
.tablistbar .container {
width: auto;
}
.tablist-collapse.collapse {
height: auto;
}
.tablistbar .brand {
float: left;
display: block;
padding: 10px 20px 10px;
margin-left: -20px;
font-size: 20px;
font-weight: 200;
color: #ffffff;
text-shadow: 0 1px 0 #024002;
}
.tablistbar .brand:hover {
text-decoration: none;
}
.tablistbar-text {
margin-bottom: 0;
line-height: 40px;
}
.tablistbar-link {
color: #ffffff;
}
.tablistbar-link:hover {
color: #333333;
}
.tablistbar .tablist {
position: relative;
left: 0;
display: block;
float: left;
margin: 0 10px 0 0;
}
.tablistbar .tablist.pull-right {
float: right;
margin-right: 0;
}
.tablistbar .tablist > li {
float: left;
}
.tablistbar .tablist > li > a {
float: none;
padding: 10px 15px 10px;
color: #ffffff;
text-decoration: none;
text-shadow: 0 1px 0 #024002;
}
.tablistbar .tablist .dropdown-toggle .caret {
margin-top: 8px;
}
.tablistbar .tablist > li > a:focus,
.tablistbar .tablist > li > a:hover {
background-color: transparent;
color: white;
text-decoration: none;
}
.tablistbar .tablist > .current > a,
.tablistbar .tablist > .current > a:hover,
.tablistbar .tablist > .current > a:focus {
color: #555555;
text-decoration: none;
background-color: #034703;
-webkit-box-shadow: inset 0 3px 8px rgba(0, 0, 0, 0.125);
-moz-box-shadow: inset 0 3px 8px rgba(0, 0, 0, 0.125);
box-shadow: inset 0 3px 8px rgba(0, 0, 0, 0.125);
}
.tablistbar .btn-navbar {
display: none;
float: right;
padding: 7px 10px;
margin-left: 5px;
margin-right: 5px;
color: #ffffff;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
background-color: #023402;
background-image: -moz-linear-gradient(top, #012701, #034703);
background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#012701), to(#034703));
background-image: -webkit-linear-gradient(top, #012701, #034703);
background-image: -o-linear-gradient(top, #012701, #034703);
background-image: linear-gradient(to bottom, #012701, #034703);
background-repeat: repeat-x;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff012701', endColorstr='#ff034703', GradientType=0);
border-color: #034703 #034703 #000000;
border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
*background-color: #034703;
/* Darken IE7 buttons by default so they stand out more given they won't have borders */
filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
-webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
-moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.075);
}
.tablistbar .tablist > li > .dropdown-menu:before {
content: '';
display: inline-block;
border-left: 7px solid transparent;
border-right: 7px solid transparent;
border-bottom: 7px solid #ccc;
border-bottom-color: rgba(0, 0, 0, 0.2);
position: absolute;
top: -7px;
left: 9px;
}
.tablistbar .tablist > li > .dropdown-menu:after {
content: '';
display: inline-block;
border-left: 6px solid transparent;
border-right: 6px solid transparent;
border-bottom: 6px solid #ffffff;
position: absolute;
top: -6px;
left: 10px;
}
.tablistbar .tablist li.dropdown.open > .dropdown-toggle,
.tablistbar .tablist li.dropdown.current > .dropdown-toggle,
.tablistbar .tablist li.dropdown.open.current > .dropdown-toggle {
background-color: #034703;
color: #555555;
}
.tablistbar .tablist li.dropdown > .dropdown-toggle .caret {
border-top-color: #ffffff;
border-bottom-color: #ffffff;
}
.tablistbar .tablist li.dropdown.open > .dropdown-toggle .caret,
.tablistbar .tablist li.dropdown.current > .dropdown-toggle .caret,
.tablistbar .tablist li.dropdown.open.current > .dropdown-toggle .caret {
border-top-color: #555555;
border-bottom-color: #555555;
}
.tablistbar .pull-right > li > .dropdown-menu,
.tablistbar .tablist > li > .dropdown-menu.pull-right {
left: auto;
right: 0;
}
.tablistbar .pull-right > li > .dropdown-menu:before,
.tablistbar .tablist > li > .dropdown-menu.pull-right:before {
left: auto;
right: 12px;
}
.tablistbar .pull-right > li > .dropdown-menu:after,
.tablistbar .tablist > li > .dropdown-menu.pull-right:after {
left: auto;
right: 13px;
}
.tablistbar .pull-right > li > .dropdown-menu .dropdown-menu,
.tablistbar .tablist > li > .dropdown-menu.pull-right .dropdown-menu {
left: auto;
right: 100%;
margin-left: 0;
margin-right: -1px;
-webkit-border-radius: 6px 0 6px 6px;
-moz-border-radius: 6px 0 6px 6px;
border-radius: 6px 0 6px 6px;
}
.breadcrumb {
padding: 8px 15px;
margin: 0 0 20px;
list-style: none;
background-color: #f5f5f5;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.breadcrumb li {
display: inline-block;
*display: inline;
/* IE7 inline-block hack */
*zoom: 1;
text-shadow: 0 1px 0 #ffffff;
}
.breadcrumb .divider {
padding: 0 5px;
color: #ccc;
}
.breadcrumb .current {
color: #999999;
}
.pagination-right {
text-align: right;
}
.fade {
opacity: 0;
-webkit-transition: opacity 0.15s linear;
-moz-transition: opacity 0.15s linear;
-o-transition: opacity 0.15s linear;
transition: opacity 0.15s linear;
}
.fade.in {
opacity: 1;
}
.collapse {
position: relative;
height: 0;
overflow: hidden;
-webkit-transition: height 0.35s ease;
-moz-transition: height 0.35s ease;
-o-transition: height 0.35s ease;
transition: height 0.35s ease;
}
.collapse.in {
height: auto;
}
.hidden {
display: none;
visibility: hidden;
}
.visible-phone {
display: none !important;
}
.visible-tablet {
display: none !important;
}
.hidden-desktop {
display: none !important;
}
.visible-desktop {
display: inherit !important;
}
@media (min-width: 768px) and (max-width: 979px) {
.hidden-desktop {
display: inherit !important;
}
.visible-desktop {
display: none !important ;
}
.visible-tablet {
display: inherit !important;
}
.hidden-tablet {
display: none !important;
}
}
@media (max-width: 767px) {
.hidden-desktop {
display: inherit !important;
}
.visible-desktop {
display: none !important;
}
.visible-phone {
display: inherit !important;
}
.hidden-phone {
display: none !important;
}
}
@media (max-width: 767px) {
body {
padding-left: 20px;
padding-right: 20px;
}
.container {
width: auto;
}
.row,
.thumbnails {
margin-left: 0;
}
}
@media (max-width: 480px) {
.tablist-collapse {
-webkit-transform: translate3d(0, 0, 0);
}
.page-header h1 small {
display: block;
line-height: 20px;
}
}
@media (min-width: 768px) and (max-width: 979px) {
.row {
margin-left: -20px;
*zoom: 1;
}
.row:before,
.row:after {
display: table;
content: "";
line-height: 0;
}
.row:after {
clear: both;
}
[class*="span"] {
float: left;
min-height: 1px;
margin-left: 20px;
}
.container {
width: 724px;
}
}
@media (min-width: 1200px) {
.row {
margin-left: -30px;
*zoom: 1;
}
.row:before,
.row:after {
display: table;
content: "";
line-height: 0;
}
.row:after {
clear: both;
}
[class*="span"] {
float: left;
min-height: 1px;
margin-left: 30px;
}
.container {
width: 1070px;
}
}
@media (max-width: 979px) {
body {
padding-top: 0;
}
}
@media (min-width: 980px) {
.tablist-collapse.collapse {
height: auto !important;
overflow: visible !important;
}
}
.tablistbar .brand {
padding: 5px;
margin-left: 0;
}
.tablistbar .brand img {
width: 30px;
vertical-align: middle;
}
h1 small {
font-size: 18px;
}
h1 small,
h2 small,
h3 small,
h4 small,
h5 small,
h6 small,
.page-header small {
line-height: 0.8;
font-weight: normal;
color: #999999;
display:block;
vertical-align: middle;
}
.page-header h1, h1:first-child {
font-size: 40px;
padding-bottom: 5px;
}
.page-header h1 {
border-bottom: 1px solid #999999;
padding-bottom: 9px;
}
.page-header img {
height: 80px;
padding-bottom: 5px;
}
.page-header small {
line-height: 1.1;
font-size: 18px;
}
h2,
h3,
h4,
div.ah,
.title {
border-color: #D6E9C6;
color: #468847;
border-style: solid;
border-width: 0 0 1px;
padding-left: 0.5em;
}
.google {
color: white;
}
.breadcrumb {
font-size: 11px;
padding-top: 2px;
padding-bottom: 2px;
}
h1 a,
h2 a,
h3 a,
h4 a {
color: inherit;
}
.tablistbar-inner a {
font-weight: bold;
}
.list-2panes:before,
.list-2panes:after {
display: table;
content: "";
line-height: 0;
}
.list-2panes:after {
clear:both;
}
.list-2panes li {
width: 470px;
width: 470px;
float: left;
margin-left: 30px;
min-height: 1px;
}
/* The standard CSS for doxygen */
/* @group Heading Levels */
dt {
font-weight: bold;
}
div.multicol {
-moz-column-gap: 1em;
-webkit-column-gap: 1em;
-moz-column-count: 3;
-webkit-column-count: 3;
}
p.startli, p.startdd, p.starttd {
margin-top: 2px;
}
p.endli {
margin-bottom: 0px;
}
p.enddd {
margin-bottom: 4px;
}
p.endtd {
margin-bottom: 2px;
}
/* @end */
caption {
font-weight: bold;
}
span.legend {
font-size: 70%;
text-align: center;
}
h3.version {
font-size: 90%;
text-align: center;
}
div.qindex, div.tablisttab{
background-color: #EBF6EB;
border: 1px solid #A3D7A3;
text-align: center;
}
div.qindex, div.tablistpath {
width: 100%;
line-height: 140%;
}
div.tablisttab {
margin-right: 15px;
}
/* @group Link Styling */
a {
color: #3D8C3D;
font-weight: normal;
text-decoration: none;
}
.contents a:visited {
color: #46A246;
}
a:hover {
text-decoration: underline;
}
a.qindex {
font-weight: bold;
}
a.qindexHL {
font-weight: bold;
background-color: #9CD49C;
color: #ffffff;
border: 1px double #86CA86;
}
.contents a.qindexHL:visited {
color: #ffffff;
}
a.el {
font-weight: bold;
}
a.elRef {
}
a.code {
color: #4665A2;
}
a.codeRef {
color: #4665A2;
}
/* @end */
dl.el {
margin-left: -1cm;
}
.fragment {
font-family: monospace, fixed;
font-size: 105%;
}
pre.fragment {
border: 1px solid #C4E5C4;
background-color: #FBFDFB;
padding: 4px 6px;
margin: 4px 8px 4px 2px;
overflow: auto;
word-wrap: break-word;
font-size: 9pt;
line-height: 125%;
}
div.groupHeader {
margin-left: 16px;
margin-top: 12px;
font-weight: bold;
}
div.groupText {
margin-left: 16px;
font-style: italic;
}
div.contents {
margin-top: 10px;
margin-left: 8px;
margin-right: 8px;
}
td.indexkey {
white-space: nowrap;
vertical-align: top;
}
tr.memlist {
background-color: #EEF7EE;
}
p.formulaDsp {
text-align: center;
}
img.formulaDsp {
}
img.formulaInl {
vertical-align: middle;
}
div.center {
text-align: center;
margin-top: 0px;
margin-bottom: 0px;
padding: 0px;
}
div.center img {
border: 0px;
}
#footer {
margin: -10px 1em 0;
padding-top: 20px;
text-align: center;
font-size: small;
}
address.footer {
background-color: #ffffff;
text-align: center;
}
img.footer {
border: 0px;
vertical-align: middle;
}
/* @group Code Colorization */
span.keyword {
color: #008000
}
span.keywordtype {
color: #604020
}
span.keywordflow {
color: #e08000
}
span.comment {
color: #800000
}
span.preprocessor {
color: #806020
}
span.stringliteral {
color: #002080
}
span.charliteral {
color: #008080
}
span.vhdldigit {
color: #ff00ff
}
span.vhdlchar {
color: #000000
}
span.vhdlkeyword {
color: #700070
}
span.vhdllogic {
color: #ff0000
}
/* @end */
/*
.search {
color: #003399;
font-weight: bold;
}
form.search {
margin-bottom: 0px;
margin-top: 0px;
}
input.search {
font-size: 75%;
color: #000080;
font-weight: normal;
background-color: #e8eef2;
}
*/
td.tiny {
font-size: 75%;
}
.dirtab {
padding: 4px;
border-collapse: collapse;
border: 1px solid #A3D7A3;
}
th.dirtab {
background: #EBF6EB;
font-weight: bold;
}
hr {
height: 0px;
border: none;
border-top: 1px solid #4AAA4A;
}
hr.footer {
height: 1px;
}
/* @group Member Descriptions */
table.memberdecls {
border-spacing: 0px;
padding: 0px;
}
.mdescLeft, .mdescRight,
.memItemLeft, .memItemRight,
.memTemplItemLeft, .memTemplItemRight, .memTemplParams {
background-color: #F9FCF9;
border: none;
margin: 4px;
padding: 1px 0 0 8px;
}
.mdescLeft, .mdescRight {
padding: 0px 8px 4px 8px;
color: #555;
}
.memItemLeft, .memItemRight, .memTemplParams {
border-top: 1px solid #C4E5C4;
}
.memItemLeft, .memTemplItemLeft {
white-space: nowrap;
}
.memItemRight {
width: 100%;
}
.memTemplParams {
color: #46A246;
white-space: nowrap;
}
/* @end */
/* @group Member Details */
/* Styles for detailed member documentation */
.memtemplate {
font-size: 80%;
color: #46A246;
font-weight: normal;
margin-left: 9px;
}
.memnav {
background-color: #EBF6EB;
border: 1px solid #A3D7A3;
text-align: center;
margin: 2px;
margin-right: 15px;
padding: 2px;
}
.mempage {
width: 100%;
}
.memitem {
padding: 0;
margin-bottom: 10px;
margin-right: 5px;
}
.memname {
white-space: nowrap;
font-weight: bold;
margin-left: 6px;
}
.memproto, dl.reflist dt {
border-top: 1px solid #A8D9A8;
border-left: 1px solid #A8D9A8;
border-right: 1px solid #A8D9A8;
padding: 6px 0px 6px 0px;
color: #255525;
font-weight: bold;
text-shadow: 0px 1px 1px rgba(255, 255, 255, 0.9);
/* opera specific markup */
box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
border-top-right-radius: 8px;
border-top-left-radius: 8px;
/* firefox specific markup */
-moz-box-shadow: rgba(0, 0, 0, 0.15) 5px 5px 5px;
-moz-border-radius-topright: 8px;
-moz-border-radius-topleft: 8px;
/* webkit specific markup */
-webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
-webkit-border-top-right-radius: 8px;
-webkit-border-top-left-radius: 8px;
background-image:url('nav_f.png');
background-repeat:repeat-x;
background-color: #E2F2E2;
}
.memdoc, dl.reflist dd {
border-bottom: 1px solid #A8D9A8;
border-left: 1px solid #A8D9A8;
border-right: 1px solid #A8D9A8;
padding: 2px 5px;
background-color: #FBFDFB;
border-top-width: 0;
/* opera specific markup */
border-bottom-left-radius: 8px;
border-bottom-right-radius: 8px;
box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
/* firefox specific markup */
-moz-border-radius-bottomleft: 8px;
-moz-border-radius-bottomright: 8px;
-moz-box-shadow: rgba(0, 0, 0, 0.15) 5px 5px 5px;
background-image: -moz-linear-gradient(center top, #FFFFFF 0%, #FFFFFF 60%, #F7FBF7 95%, #EEF7EE);
/* webkit specific markup */
-webkit-border-bottom-left-radius: 8px;
-webkit-border-bottom-right-radius: 8px;
-webkit-box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.15);
background-image: -webkit-gradient(linear,center top,center bottom,from(#FFFFFF), color-stop(0.6,#FFFFFF), color-stop(0.60,#FFFFFF), color-stop(0.95,#F7FBF7), to(#EEF7EE));
}
dl.reflist dt {
padding: 5px;
}
dl.reflist dd {
margin: 0px 0px 10px 0px;
padding: 5px;
}
.paramkey {
text-align: right;
}
.paramtype {
white-space: nowrap;
}
.paramname {
color: #602020;
white-space: nowrap;
}
.paramname em {
font-style: normal;
}
.params, .retval, .exception, .tparams {
border-spacing: 6px 2px;
}
.params .paramname, .retval .paramname {
font-weight: bold;
vertical-align: top;
}
.params .paramtype {
font-style: italic;
vertical-align: top;
}
.params .paramdir {
font-family: "courier new",courier,monospace;
vertical-align: top;
}
/* @end */
/* @group Directory (tree) */
/* for the tree view */
.ftvtree {
font-family: sans-serif;
margin: 0px;
}
/* these are for tree view when used as main index */
.directory {
font-size: 9pt;
font-weight: bold;
margin: 5px;
}
.directory h3 {
margin: 0px;
margin-top: 1em;
font-size: 11pt;
}
/*
The following two styles can be used to replace the root node title
with an image of your choice. Simply uncomment the next two styles,
specify the name of your image and be sure to set 'height' to the
proper pixel height of your image.
*/
/*
.directory h3.swap {
height: 61px;
background-repeat: no-repeat;
background-image: url("yourimage.gif");
}
.directory h3.swap span {
display: none;
}
*/
.directory > h3 {
margin-top: 0;
}
.directory p {
margin: 0px;
white-space: nowrap;
}
.directory div {
display: none;
margin: 0px;
}
.directory img {
vertical-align: -30%;
}
/* these are for tree view when not used as main index */
.directory-alt {
font-size: 100%;
font-weight: bold;
}
.directory-alt h3 {
margin: 0px;
margin-top: 1em;
font-size: 11pt;
}
.directory-alt > h3 {
margin-top: 0;
}
.directory-alt p {
margin: 0px;
white-space: nowrap;
}
.directory-alt div {
display: none;
margin: 0px;
}
.directory-alt img {
vertical-align: -30%;
}
/* @end */
div.dynheader {
margin-top: 8px;
}
address {
font-style: normal;
color: #2A612A;
}
table.doxtable {
border-collapse:collapse;
}
table.doxtable td, table.doxtable th {
border: 1px solid #2D682D;
padding: 3px 7px 2px;
}
table.doxtable th {
background-color: #377F37;
color: #FFFFFF;
font-size: 110%;
padding-bottom: 4px;
padding-top: 5px;
text-align:left;
}
table.fieldtable {
width: 100%;
margin-bottom: 10px;
border: 1px solid #A8D9A8;
border-spacing: 0px;
-moz-border-radius: 4px;
-webkit-border-radius: 4px;
border-radius: 4px;
-moz-box-shadow: rgba(0, 0, 0, 0.15) 2px 2px 2px;
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Generated on $datetime for $projectname by&#160;<a href="http://www.doxygen.org/index.html">doxygen</a> $doxygenversion
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@chapter Encoders
@c man begin ENCODERS
Encoders are configured elements in FFmpeg which allow the encoding of
multimedia streams.
When you configure your FFmpeg build, all the supported native encoders
are enabled by default. Encoders requiring an external library must be enabled
manually via the corresponding @code{--enable-lib} option. You can list all
available encoders using the configure option @code{--list-encoders}.
You can disable all the encoders with the configure option
@code{--disable-encoders} and selectively enable / disable single encoders
with the options @code{--enable-encoder=@var{ENCODER}} /
@code{--disable-encoder=@var{ENCODER}}.
The option @code{-codecs} of the ff* tools will display the list of
enabled encoders.
@c man end ENCODERS
@chapter Audio Encoders
@c man begin AUDIO ENCODERS
A description of some of the currently available audio encoders
follows.
@anchor{aacenc}
@section aac
Advanced Audio Coding (AAC) encoder.
This encoder is an experimental FFmpeg-native AAC encoder. Currently only the
low complexity (AAC-LC) profile is supported. To use this encoder, you must set
@option{strict} option to @samp{experimental} or lower.
As this encoder is experimental, unexpected behavior may exist from time to
time. For a more stable AAC encoder, see @ref{libvo-aacenc}. However, be warned
that it has a worse quality reported by some users.
@c Comment this out until somebody writes the respective documentation.
@c See also @ref{libfaac}, @ref{libaacplus}, and @ref{libfdk-aac-enc}.
@subsection Options
@table @option
@item b
Set bit rate in bits/s. Setting this automatically activates constant bit rate
(CBR) mode.
@item q
Set quality for variable bit rate (VBR) mode. This option is valid only using
the @command{ffmpeg} command-line tool. For library interface users, use
@option{global_quality}.
@item stereo_mode
Set stereo encoding mode. Possible values:
@table @samp
@item auto
Automatically selected by the encoder.
@item ms_off
Disable middle/side encoding. This is the default.
@item ms_force
Force middle/side encoding.
@end table
@item aac_coder
Set AAC encoder coding method. Possible values:
@table @samp
@item faac
FAAC-inspired method.
This method is a simplified reimplementation of the method used in FAAC, which
sets thresholds proportional to the band energies, and then decreases all the
thresholds with quantizer steps to find the appropriate quantization with
distortion below threshold band by band.
The quality of this method is comparable to the two loop searching method
descibed below, but somewhat a little better and slower.
@item anmr
Average noise to mask ratio (ANMR) trellis-based solution.
This has a theoretic best quality out of all the coding methods, but at the
cost of the slowest speed.
@item twoloop
Two loop searching (TLS) method.
This method first sets quantizers depending on band thresholds and then tries
to find an optimal combination by adding or subtracting a specific value from
all quantizers and adjusting some individual quantizer a little.
This method produces similar quality with the FAAC method and is the default.
@item fast
Constant quantizer method.
This method sets a constant quantizer for all bands. This is the fastest of all
the methods, yet produces the worst quality.
@end table
@end table
@section ac3 and ac3_fixed
AC-3 audio encoders.
These encoders implement part of ATSC A/52:2010 and ETSI TS 102 366, as well as
the undocumented RealAudio 3 (a.k.a. dnet).
The @var{ac3} encoder uses floating-point math, while the @var{ac3_fixed}
encoder only uses fixed-point integer math. This does not mean that one is
always faster, just that one or the other may be better suited to a
particular system. The floating-point encoder will generally produce better
quality audio for a given bitrate. The @var{ac3_fixed} encoder is not the
default codec for any of the output formats, so it must be specified explicitly
using the option @code{-acodec ac3_fixed} in order to use it.
@subsection AC-3 Metadata
The AC-3 metadata options are used to set parameters that describe the audio,
but in most cases do not affect the audio encoding itself. Some of the options
do directly affect or influence the decoding and playback of the resulting
bitstream, while others are just for informational purposes. A few of the
options will add bits to the output stream that could otherwise be used for
audio data, and will thus affect the quality of the output. Those will be
indicated accordingly with a note in the option list below.
These parameters are described in detail in several publicly-available
documents.
@itemize
@item @uref{http://www.atsc.org/cms/standards/a_52-2010.pdf,A/52:2010 - Digital Audio Compression (AC-3) (E-AC-3) Standard}
@item @uref{http://www.atsc.org/cms/standards/a_54a_with_corr_1.pdf,A/54 - Guide to the Use of the ATSC Digital Television Standard}
@item @uref{http://www.dolby.com/uploadedFiles/zz-_Shared_Assets/English_PDFs/Professional/18_Metadata.Guide.pdf,Dolby Metadata Guide}
@item @uref{http://www.dolby.com/uploadedFiles/zz-_Shared_Assets/English_PDFs/Professional/46_DDEncodingGuidelines.pdf,Dolby Digital Professional Encoding Guidelines}
@end itemize
@subsubsection Metadata Control Options
@table @option
@item -per_frame_metadata @var{boolean}
Allow Per-Frame Metadata. Specifies if the encoder should check for changing
metadata for each frame.
@table @option
@item 0
The metadata values set at initialization will be used for every frame in the
stream. (default)
@item 1
Metadata values can be changed before encoding each frame.
@end table
@end table
@subsubsection Downmix Levels
@table @option
@item -center_mixlev @var{level}
Center Mix Level. The amount of gain the decoder should apply to the center
channel when downmixing to stereo. This field will only be written to the
bitstream if a center channel is present. The value is specified as a scale
factor. There are 3 valid values:
@table @option
@item 0.707
Apply -3dB gain
@item 0.595
Apply -4.5dB gain (default)
@item 0.500
Apply -6dB gain
@end table
@item -surround_mixlev @var{level}
Surround Mix Level. The amount of gain the decoder should apply to the surround
channel(s) when downmixing to stereo. This field will only be written to the
bitstream if one or more surround channels are present. The value is specified
as a scale factor. There are 3 valid values:
@table @option
@item 0.707
Apply -3dB gain
@item 0.500
Apply -6dB gain (default)
@item 0.000
Silence Surround Channel(s)
@end table
@end table
@subsubsection Audio Production Information
Audio Production Information is optional information describing the mixing
environment. Either none or both of the fields are written to the bitstream.
@table @option
@item -mixing_level @var{number}
Mixing Level. Specifies peak sound pressure level (SPL) in the production
environment when the mix was mastered. Valid values are 80 to 111, or -1 for
unknown or not indicated. The default value is -1, but that value cannot be
used if the Audio Production Information is written to the bitstream. Therefore,
if the @code{room_type} option is not the default value, the @code{mixing_level}
option must not be -1.
@item -room_type @var{type}
Room Type. Describes the equalization used during the final mixing session at
the studio or on the dubbing stage. A large room is a dubbing stage with the
industry standard X-curve equalization; a small room has flat equalization.
This field will not be written to the bitstream if both the @code{mixing_level}
option and the @code{room_type} option have the default values.
@table @option
@item 0
@itemx notindicated
Not Indicated (default)
@item 1
@itemx large
Large Room
@item 2
@itemx small
Small Room
@end table
@end table
@subsubsection Other Metadata Options
@table @option
@item -copyright @var{boolean}
Copyright Indicator. Specifies whether a copyright exists for this audio.
@table @option
@item 0
@itemx off
No Copyright Exists (default)
@item 1
@itemx on
Copyright Exists
@end table
@item -dialnorm @var{value}
Dialogue Normalization. Indicates how far the average dialogue level of the
program is below digital 100% full scale (0 dBFS). This parameter determines a
level shift during audio reproduction that sets the average volume of the
dialogue to a preset level. The goal is to match volume level between program
sources. A value of -31dB will result in no volume level change, relative to
the source volume, during audio reproduction. Valid values are whole numbers in
the range -31 to -1, with -31 being the default.
@item -dsur_mode @var{mode}
Dolby Surround Mode. Specifies whether the stereo signal uses Dolby Surround
(Pro Logic). This field will only be written to the bitstream if the audio
stream is stereo. Using this option does @b{NOT} mean the encoder will actually
apply Dolby Surround processing.
@table @option
@item 0
@itemx notindicated
Not Indicated (default)
@item 1
@itemx off
Not Dolby Surround Encoded
@item 2
@itemx on
Dolby Surround Encoded
@end table
@item -original @var{boolean}
Original Bit Stream Indicator. Specifies whether this audio is from the
original source and not a copy.
@table @option
@item 0
@itemx off
Not Original Source
@item 1
@itemx on
Original Source (default)
@end table
@end table
@subsection Extended Bitstream Information
The extended bitstream options are part of the Alternate Bit Stream Syntax as
specified in Annex D of the A/52:2010 standard. It is grouped into 2 parts.
If any one parameter in a group is specified, all values in that group will be
written to the bitstream. Default values are used for those that are written
but have not been specified. If the mixing levels are written, the decoder
will use these values instead of the ones specified in the @code{center_mixlev}
and @code{surround_mixlev} options if it supports the Alternate Bit Stream
Syntax.
@subsubsection Extended Bitstream Information - Part 1
@table @option
@item -dmix_mode @var{mode}
Preferred Stereo Downmix Mode. Allows the user to select either Lt/Rt
(Dolby Surround) or Lo/Ro (normal stereo) as the preferred stereo downmix mode.
@table @option
@item 0
@itemx notindicated
Not Indicated (default)
@item 1
@itemx ltrt
Lt/Rt Downmix Preferred
@item 2
@itemx loro
Lo/Ro Downmix Preferred
@end table
@item -ltrt_cmixlev @var{level}
Lt/Rt Center Mix Level. The amount of gain the decoder should apply to the
center channel when downmixing to stereo in Lt/Rt mode.
@table @option
@item 1.414
Apply +3dB gain
@item 1.189
Apply +1.5dB gain
@item 1.000
Apply 0dB gain
@item 0.841
Apply -1.5dB gain
@item 0.707
Apply -3.0dB gain
@item 0.595
Apply -4.5dB gain (default)
@item 0.500
Apply -6.0dB gain
@item 0.000
Silence Center Channel
@end table
@item -ltrt_surmixlev @var{level}
Lt/Rt Surround Mix Level. The amount of gain the decoder should apply to the
surround channel(s) when downmixing to stereo in Lt/Rt mode.
@table @option
@item 0.841
Apply -1.5dB gain
@item 0.707
Apply -3.0dB gain
@item 0.595
Apply -4.5dB gain
@item 0.500
Apply -6.0dB gain (default)
@item 0.000
Silence Surround Channel(s)
@end table
@item -loro_cmixlev @var{level}
Lo/Ro Center Mix Level. The amount of gain the decoder should apply to the
center channel when downmixing to stereo in Lo/Ro mode.
@table @option
@item 1.414
Apply +3dB gain
@item 1.189
Apply +1.5dB gain
@item 1.000
Apply 0dB gain
@item 0.841
Apply -1.5dB gain
@item 0.707
Apply -3.0dB gain
@item 0.595
Apply -4.5dB gain (default)
@item 0.500
Apply -6.0dB gain
@item 0.000
Silence Center Channel
@end table
@item -loro_surmixlev @var{level}
Lo/Ro Surround Mix Level. The amount of gain the decoder should apply to the
surround channel(s) when downmixing to stereo in Lo/Ro mode.
@table @option
@item 0.841
Apply -1.5dB gain
@item 0.707
Apply -3.0dB gain
@item 0.595
Apply -4.5dB gain
@item 0.500
Apply -6.0dB gain (default)
@item 0.000
Silence Surround Channel(s)
@end table
@end table
@subsubsection Extended Bitstream Information - Part 2
@table @option
@item -dsurex_mode @var{mode}
Dolby Surround EX Mode. Indicates whether the stream uses Dolby Surround EX
(7.1 matrixed to 5.1). Using this option does @b{NOT} mean the encoder will actually
apply Dolby Surround EX processing.
@table @option
@item 0
@itemx notindicated
Not Indicated (default)
@item 1
@itemx on
Dolby Surround EX Off
@item 2
@itemx off
Dolby Surround EX On
@end table
@item -dheadphone_mode @var{mode}
Dolby Headphone Mode. Indicates whether the stream uses Dolby Headphone
encoding (multi-channel matrixed to 2.0 for use with headphones). Using this
option does @b{NOT} mean the encoder will actually apply Dolby Headphone
processing.
@table @option
@item 0
@itemx notindicated
Not Indicated (default)
@item 1
@itemx on
Dolby Headphone Off
@item 2
@itemx off
Dolby Headphone On
@end table
@item -ad_conv_type @var{type}
A/D Converter Type. Indicates whether the audio has passed through HDCD A/D
conversion.
@table @option
@item 0
@itemx standard
Standard A/D Converter (default)
@item 1
@itemx hdcd
HDCD A/D Converter
@end table
@end table
@subsection Other AC-3 Encoding Options
@table @option
@item -stereo_rematrixing @var{boolean}
Stereo Rematrixing. Enables/Disables use of rematrixing for stereo input. This
is an optional AC-3 feature that increases quality by selectively encoding
the left/right channels as mid/side. This option is enabled by default, and it
is highly recommended that it be left as enabled except for testing purposes.
@end table
@subsection Floating-Point-Only AC-3 Encoding Options
These options are only valid for the floating-point encoder and do not exist
for the fixed-point encoder due to the corresponding features not being
implemented in fixed-point.
@table @option
@item -channel_coupling @var{boolean}
Enables/Disables use of channel coupling, which is an optional AC-3 feature
that increases quality by combining high frequency information from multiple
channels into a single channel. The per-channel high frequency information is
sent with less accuracy in both the frequency and time domains. This allows
more bits to be used for lower frequencies while preserving enough information
to reconstruct the high frequencies. This option is enabled by default for the
floating-point encoder and should generally be left as enabled except for
testing purposes or to increase encoding speed.
@table @option
@item -1
@itemx auto
Selected by Encoder (default)
@item 0
@itemx off
Disable Channel Coupling
@item 1
@itemx on
Enable Channel Coupling
@end table
@item -cpl_start_band @var{number}
Coupling Start Band. Sets the channel coupling start band, from 1 to 15. If a
value higher than the bandwidth is used, it will be reduced to 1 less than the
coupling end band. If @var{auto} is used, the start band will be determined by
the encoder based on the bit rate, sample rate, and channel layout. This option
has no effect if channel coupling is disabled.
@table @option
@item -1
@itemx auto
Selected by Encoder (default)
@end table
@end table
@anchor{libmp3lame}
@section libmp3lame
LAME (Lame Ain't an MP3 Encoder) MP3 encoder wrapper.
Requires the presence of the libmp3lame headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libmp3lame}.
See @ref{libshine} for a fixed-point MP3 encoder, although with a
lower quality.
@subsection Options
The following options are supported by the libmp3lame wrapper. The
@command{lame}-equivalent of the options are listed in parentheses.
@table @option
@item b (@emph{-b})
Set bitrate expressed in bits/s for CBR. LAME @code{bitrate} is
expressed in kilobits/s.
@item q (@emph{-V})
Set constant quality setting for VBR. This option is valid only
using the @command{ffmpeg} command-line tool. For library interface
users, use @option{global_quality}.
@item compression_level (@emph{-q})
Set algorithm quality. Valid arguments are integers in the 0-9 range,
with 0 meaning highest quality but slowest, and 9 meaning fastest
while producing the worst quality.
@item reservoir
Enable use of bit reservoir when set to 1. Default value is 1. LAME
has this enabled by default, but can be overriden by use
@option{--nores} option.
@item joint_stereo (@emph{-m j})
Enable the encoder to use (on a frame by frame basis) either L/R
stereo or mid/side stereo. Default value is 1.
@end table
@section libopencore-amrnb
OpenCORE Adaptive Multi-Rate Narrowband encoder.
Requires the presence of the libopencore-amrnb headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libopencore-amrnb --enable-version3}.
This is a mono-only encoder. Officially it only supports 8000Hz sample rate,
but you can override it by setting @option{strict} to @samp{unofficial} or
lower.
@subsection Options
@table @option
@item b
Set bitrate in bits per second. Only the following bitrates are supported,
otherwise libavcodec will round to the nearest valid bitrate.
@table @option
@item 4750
@item 5150
@item 5900
@item 6700
@item 7400
@item 7950
@item 10200
@item 12200
@end table
@item dtx
Allow discontinuous transmission (generate comfort noise) when set to 1. The
default value is 0 (disabled).
@end table
@anchor{libshine}
@section libshine
Shine Fixed-Point MP3 encoder wrapper.
Shine is a fixed-point MP3 encoder. It has a far better performance on
platforms without an FPU, e.g. armel CPUs, and some phones and tablets.
However, as it is more targeted on performance than quality, it is not on par
with LAME and other production-grade encoders quality-wise. Also, according to
the project's homepage, this encoder may not be free of bugs as the code was
written a long time ago and the project was dead for at least 5 years.
This encoder only supports stereo and mono input. This is also CBR-only.
The original project (last updated in early 2007) is at
@url{http://sourceforge.net/projects/libshine-fxp/}. We only support the
updated fork by the Savonet/Liquidsoap project at @url{https://github.com/savonet/shine}.
Requires the presence of the libshine headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libshine}.
See also @ref{libmp3lame}.
@subsection Options
The following options are supported by the libshine wrapper. The
@command{shineenc}-equivalent of the options are listed in parentheses.
@table @option
@item b (@emph{-b})
Set bitrate expressed in bits/s for CBR. @command{shineenc} @option{-b} option
is expressed in kilobits/s.
@end table
@section libtwolame
TwoLAME MP2 encoder wrapper.
Requires the presence of the libtwolame headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libtwolame}.
@subsection Options
The following options are supported by the libtwolame wrapper. The
@command{twolame}-equivalent options follow the FFmpeg ones and are in
parentheses.
@table @option
@item b (@emph{-b})
Set bitrate expressed in bits/s for CBR. @command{twolame} @option{b}
option is expressed in kilobits/s. Default value is 128k.
@item q (@emph{-V})
Set quality for experimental VBR support. Maximum value range is
from -50 to 50, useful range is from -10 to 10. The higher the
value, the better the quality. This option is valid only using the
@command{ffmpeg} command-line tool. For library interface users,
use @option{global_quality}.
@item mode (@emph{--mode})
Set the mode of the resulting audio. Possible values:
@table @samp
@item auto
Choose mode automatically based on the input. This is the default.
@item stereo
Stereo
@item joint_stereo
Joint stereo
@item dual_channel
Dual channel
@item mono
Mono
@end table
@item psymodel (@emph{--psyc-mode})
Set psychoacoustic model to use in encoding. The argument must be
an integer between -1 and 4, inclusive. The higher the value, the
better the quality. The default value is 3.
@item energy_levels (@emph{--energy})
Enable energy levels extensions when set to 1. The default value is
0 (disabled).
@item error_protection (@emph{--protect})
Enable CRC error protection when set to 1. The default value is 0
(disabled).
@item copyright (@emph{--copyright})
Set MPEG audio copyright flag when set to 1. The default value is 0
(disabled).
@item original (@emph{--original})
Set MPEG audio original flag when set to 1. The default value is 0
(disabled).
@end table
@anchor{libvo-aacenc}
@section libvo-aacenc
VisualOn AAC encoder.
Requires the presence of the libvo-aacenc headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libvo-aacenc --enable-version3}.
This encoder is considered to be worse than the
@ref{aacenc,,native experimental FFmpeg AAC encoder}, according to
multiple sources.
@subsection Options
The VisualOn AAC encoder only support encoding AAC-LC and up to 2
channels. It is also CBR-only.
@table @option
@item b
Set bit rate in bits/s.
@end table
@section libvo-amrwbenc
VisualOn Adaptive Multi-Rate Wideband encoder.
Requires the presence of the libvo-amrwbenc headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libvo-amrwbenc --enable-version3}.
This is a mono-only encoder. Officially it only supports 16000Hz sample
rate, but you can override it by setting @option{strict} to
@samp{unofficial} or lower.
@subsection Options
@table @option
@item b
Set bitrate in bits/s. Only the following bitrates are supported, otherwise
libavcodec will round to the nearest valid bitrate.
@table @samp
@item 6600
@item 8850
@item 12650
@item 14250
@item 15850
@item 18250
@item 19850
@item 23050
@item 23850
@end table
@item dtx
Allow discontinuous transmission (generate comfort noise) when set to 1. The
default value is 0 (disabled).
@end table
@section libopus
libopus Opus Interactive Audio Codec encoder wrapper.
Requires the presence of the libopus headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libopus}.
@subsection Option Mapping
Most libopus options are modeled after the @command{opusenc} utility from
opus-tools. The following is an option mapping chart describing options
supported by the libopus wrapper, and their @command{opusenc}-equivalent
in parentheses.
@table @option
@item b (@emph{bitrate})
Set the bit rate in bits/s. FFmpeg's @option{b} option is
expressed in bits/s, while @command{opusenc}'s @option{bitrate} in
kilobits/s.
@item vbr (@emph{vbr}, @emph{hard-cbr}, and @emph{cvbr})
Set VBR mode. The FFmpeg @option{vbr} option has the following
valid arguments, with the their @command{opusenc} equivalent options
in parentheses:
@table @samp
@item off (@emph{hard-cbr})
Use constant bit rate encoding.
@item on (@emph{vbr})
Use variable bit rate encoding (the default).
@item constrained (@emph{cvbr})
Use constrained variable bit rate encoding.
@end table
@item compression_level (@emph{comp})
Set encoding algorithm complexity. Valid options are integers in
the 0-10 range. 0 gives the fastest encodes but lower quality, while 10
gives the highest quality but slowest encoding. The default is 10.
@item frame_duration (@emph{framesize})
Set maximum frame size, or duration of a frame in milliseconds. The
argument must be exactly the following: 2.5, 5, 10, 20, 40, 60. Smaller
frame sizes achieve lower latency but less quality at a given bitrate.
Sizes greater than 20ms are only interesting at fairly low bitrates.
The default of FFmpeg is 10ms, but is 20ms in @command{opusenc}.
@item packet_loss (@emph{expect-loss})
Set expected packet loss percentage. The default is 0.
@item application (N.A.)
Set intended application type. Valid options are listed below:
@table @samp
@item voip
Favor improved speech intelligibility.
@item audio
Favor faithfulness to the input (the default).
@item lowdelay
Restrict to only the lowest delay modes.
@end table
@item cutoff (N.A.)
Set cutoff bandwidth in Hz. The argument must be exactly one of the
following: 4000, 6000, 8000, 12000, or 20000, corresponding to
narrowband, mediumband, wideband, super wideband, and fullband
respectively. The default is 0 (cutoff disabled).
@end table
@section libvorbis
libvorbis encoder wrapper.
Requires the presence of the libvorbisenc headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libvorbis}.
@subsection Options
The following options are supported by the libvorbis wrapper. The
@command{oggenc}-equivalent of the options are listed in parentheses.
To get a more accurate and extensive documentation of the libvorbis
options, consult the libvorbisenc's and @command{oggenc}'s documentations.
See @url{http://xiph.org/vorbis/},
@url{http://wiki.xiph.org/Vorbis-tools}, and oggenc(1).
@table @option
@item b (@emph{-b})
Set bitrate expressed in bits/s for ABR. @command{oggenc} @option{-b} is
expressed in kilobits/s.
@item q (@emph{-q})
Set constant quality setting for VBR. The value should be a float
number in the range of -1.0 to 10.0. The higher the value, the better
the quality. The default value is @samp{3.0}.
This option is valid only using the @command{ffmpeg} command-line tool.
For library interface users, use @option{global_quality}.
@item cutoff (@emph{--advanced-encode-option lowpass_frequency=N})
Set cutoff bandwidth in Hz, a value of 0 disables cutoff. @command{oggenc}'s
related option is expressed in kHz. The default value is @samp{0} (cutoff
disabled).
@item minrate (@emph{-m})
Set minimum bitrate expressed in bits/s. @command{oggenc} @option{-m} is
expressed in kilobits/s.
@item maxrate (@emph{-M})
Set maximum bitrate expressed in bits/s. @command{oggenc} @option{-M} is
expressed in kilobits/s. This only has effect on ABR mode.
@item iblock (@emph{--advanced-encode-option impulse_noisetune=N})
Set noise floor bias for impulse blocks. The value is a float number from
-15.0 to 0.0. A negative bias instructs the encoder to pay special attention
to the crispness of transients in the encoded audio. The tradeoff for better
transient response is a higher bitrate.
@end table
@section libwavpack
A wrapper providing WavPack encoding through libwavpack.
Only lossless mode using 32-bit integer samples is supported currently.
The @option{compression_level} option can be used to control speed vs.
compression tradeoff, with the values mapped to libwavpack as follows:
@table @option
@item 0
Fast mode - corresponding to the wavpack @option{-f} option.
@item 1
Normal (default) settings.
@item 2
High quality - corresponding to the wavpack @option{-h} option.
@item 3
Very high quality - corresponding to the wavpack @option{-hh} option.
@item 4-8
Same as 3, but with extra processing enabled - corresponding to the wavpack
@option{-x} option. I.e. 4 is the same as @option{-x2} and 8 is the same as
@option{-x6}.
@end table
@c man end AUDIO ENCODERS
@chapter Video Encoders
@c man begin VIDEO ENCODERS
A description of some of the currently available video encoders
follows.
@section libtheora
Theora format supported through libtheora.
Requires the presence of the libtheora headers and library during
configuration. You need to explicitly configure the build with
@code{--enable-libtheora}.
@subsection Options
The following global options are mapped to internal libtheora options
which affect the quality and the bitrate of the encoded stream.
@table @option
@item b
Set the video bitrate, only works if the @code{qscale} flag in
@option{flags} is not enabled.
@item flags
Used to enable constant quality mode encoding through the
@option{qscale} flag, and to enable the @code{pass1} and @code{pass2}
modes.
@item g
Set the GOP size.
@item global_quality
Set the global quality in lambda units, only works if the
@code{qscale} flag in @option{flags} is enabled. The value is clipped
in the [0 - 10*@code{FF_QP2LAMBDA}] range, and then multiplied for 6.3
to get a value in the native libtheora range [0-63]. A higher value
corresponds to a higher quality.
For example, to set maximum constant quality encoding with
@command{ffmpeg}:
@example
ffmpeg -i INPUT -flags:v qscale -global_quality:v "10*QP2LAMBDA" -codec:v libtheora OUTPUT.ogg
@end example
@end table
@section libvpx
VP8 format supported through libvpx.
Requires the presence of the libvpx headers and library during configuration.
You need to explicitly configure the build with @code{--enable-libvpx}.
@subsection Options
Mapping from FFmpeg to libvpx options with conversion notes in parentheses.
@table @option
@item threads
g_threads
@item profile
g_profile
@item vb
rc_target_bitrate
@item g
kf_max_dist
@item keyint_min
kf_min_dist
@item qmin
rc_min_quantizer
@item qmax
rc_max_quantizer
@item bufsize, vb
rc_buf_sz
@code{(bufsize * 1000 / vb)}
rc_buf_optimal_sz
@code{(bufsize * 1000 / vb * 5 / 6)}
@item rc_init_occupancy, vb
rc_buf_initial_sz
@code{(rc_init_occupancy * 1000 / vb)}
@item rc_buffer_aggressivity
rc_undershoot_pct
@item skip_threshold
rc_dropframe_thresh
@item qcomp
rc_2pass_vbr_bias_pct
@item maxrate, vb
rc_2pass_vbr_maxsection_pct
@code{(maxrate * 100 / vb)}
@item minrate, vb
rc_2pass_vbr_minsection_pct
@code{(minrate * 100 / vb)}
@item minrate, maxrate, vb
@code{VPX_CBR}
@code{(minrate == maxrate == vb)}
@item crf
@code{VPX_CQ}, @code{VP8E_SET_CQ_LEVEL}
@item quality
@table @option
@item @var{best}
@code{VPX_DL_BEST_QUALITY}
@item @var{good}
@code{VPX_DL_GOOD_QUALITY}
@item @var{realtime}
@code{VPX_DL_REALTIME}
@end table
@item speed
@code{VP8E_SET_CPUUSED}
@item nr
@code{VP8E_SET_NOISE_SENSITIVITY}
@item mb_threshold
@code{VP8E_SET_STATIC_THRESHOLD}
@item slices
@code{VP8E_SET_TOKEN_PARTITIONS}
@item max-intra-rate
@code{VP8E_SET_MAX_INTRA_BITRATE_PCT}
@item force_key_frames
@code{VPX_EFLAG_FORCE_KF}
@item Alternate reference frame related
@table @option
@item vp8flags altref
@code{VP8E_SET_ENABLEAUTOALTREF}
@item @var{arnr_max_frames}
@code{VP8E_SET_ARNR_MAXFRAMES}
@item @var{arnr_type}
@code{VP8E_SET_ARNR_TYPE}
@item @var{arnr_strength}
@code{VP8E_SET_ARNR_STRENGTH}
@item @var{rc_lookahead}
g_lag_in_frames
@end table
@item vp8flags error_resilient
g_error_resilient
@end table
For more information about libvpx see:
@url{http://www.webmproject.org/}
@section libx264
x264 H.264/MPEG-4 AVC encoder wrapper.
This encoder requires the presence of the libx264 headers and library
during configuration. You need to explicitly configure the build with
@code{--enable-libx264}.
libx264 supports an impressive number of features, including 8x8 and
4x4 adaptive spatial transform, adaptive B-frame placement, CAVLC/CABAC
entropy coding, interlacing (MBAFF), lossless mode, psy optimizations
for detail retention (adaptive quantization, psy-RD, psy-trellis).
Many libx264 encoder options are mapped to FFmpeg global codec
options, while unique encoder options are provided through private
options. Additionally the @option{x264opts} and @option{x264-params}
private options allows to pass a list of key=value tuples as accepted
by the libx264 @code{x264_param_parse} function.
The x264 project website is at
@url{http://www.videolan.org/developers/x264.html}.
@subsection Options
The following options are supported by the libx264 wrapper. The
@command{x264}-equivalent options or values are listed in parentheses
for easy migration.
To reduce the duplication of documentation, only the private options
and some others requiring special attention are documented here. For
the documentation of the undocumented generic options, see
@ref{codec-options,,the Codec Options chapter}.
To get a more accurate and extensive documentation of the libx264
options, invoke the command @command{x264 --full-help} or consult
the libx264 documentation.
@table @option
@item b (@emph{bitrate})
Set bitrate in bits/s. Note that FFmpeg's @option{b} option is
expressed in bits/s, while @command{x264}'s @option{bitrate} is in
kilobits/s.
@item bf (@emph{bframes})
@item g (@emph{keyint})
@item qmax (@emph{qpmax})
@item qmin (@emph{qpmin})
@item qdiff (@emph{qpstep})
@item qblur (@emph{qblur})
@item qcomp (@emph{qcomp})
@item refs (@emph{ref})
@item sc_threshold (@emph{scenecut})
@item trellis (@emph{trellis})
@item nr (@emph{nr})
@item me_range (@emph{merange})
@item me_method (@emph{me})
Set motion estimation method. Possible values in the decreasing order
of speed:
@table @samp
@item dia (@emph{dia})
@item epzs (@emph{dia})
Diamond search with radius 1 (fastest). @samp{epzs} is an alias for
@samp{dia}.
@item hex (@emph{hex})
Hexagonal search with radius 2.
@item umh (@emph{umh})
Uneven multi-hexagon search.
@item esa (@emph{esa})
Exhaustive search.
@item tesa (@emph{tesa})
Hadamard exhaustive search (slowest).
@end table
@item subq (@emph{subme})
@item b_strategy (@emph{b-adapt})
@item keyint_min (@emph{min-keyint})
@item coder
Set entropy encoder. Possible values:
@table @samp
@item ac
Enable CABAC.
@item vlc
Enable CAVLC and disable CABAC. It generates the same effect as
@command{x264}'s @option{--no-cabac} option.
@end table
@item cmp
Set full pixel motion estimation comparation algorithm. Possible values:
@table @samp
@item chroma
Enable chroma in motion estimation.
@item sad
Ignore chroma in motion estimation. It generates the same effect as
@command{x264}'s @option{--no-chroma-me} option.
@end table
@item threads (@emph{threads})
@item thread_type
Set multithreading technique. Possible values:
@table @samp
@item slice
Slice-based multithreading. It generates the same effect as
@command{x264}'s @option{--sliced-threads} option.
@item frame
Frame-based multithreading.
@end table
@item flags
Set encoding flags. It can be used to disable closed GOP and enable
open GOP by setting it to @code{-cgop}. The result is similar to
the behavior of @command{x264}'s @option{--open-gop} option.
@item rc_init_occupancy (@emph{vbv-init})
@item preset (@emph{preset})
Set the encoding preset.
@item tune (@emph{tune})
Set tuning of the encoding params.
@item profile (@emph{profile})
Set profile restrictions.
@item fastfirstpass
Enable fast settings when encoding first pass, when set to 1. When set
to 0, it has the same effect of @command{x264}'s
@option{--slow-firstpass} option.
@item crf (@emph{crf})
Set the quality for constant quality mode.
@item crf_max (@emph{crf-max})
In CRF mode, prevents VBV from lowering quality beyond this point.
@item qp (@emph{qp})
Set constant quantization rate control method parameter.
@item aq-mode (@emph{aq-mode})
Set AQ method. Possible values:
@table @samp
@item none (@emph{0})
Disabled.
@item variance (@emph{1})
Variance AQ (complexity mask).
@item autovariance (@emph{2})
Auto-variance AQ (experimental).
@end table
@item aq-strength (@emph{aq-strength})
Set AQ strength, reduce blocking and blurring in flat and textured areas.
@item psy
Use psychovisual optimizations when set to 1. When set to 0, it has the
same effect as @command{x264}'s @option{--no-psy} option.
@item psy-rd (@emph{psy-rd})
Set strength of psychovisual optimization, in
@var{psy-rd}:@var{psy-trellis} format.
@item rc-lookahead (@emph{rc-lookahead})
Set number of frames to look ahead for frametype and ratecontrol.
@item weightb
Enable weighted prediction for B-frames when set to 1. When set to 0,
it has the same effect as @command{x264}'s @option{--no-weightb} option.
@item weightp (@emph{weightp})
Set weighted prediction method for P-frames. Possible values:
@table @samp
@item none (@emph{0})
Disabled
@item simple (@emph{1})
Enable only weighted refs
@item smart (@emph{2})
Enable both weighted refs and duplicates
@end table
@item ssim (@emph{ssim})
Enable calculation and printing SSIM stats after the encoding.
@item intra-refresh (@emph{intra-refresh})
Enable the use of Periodic Intra Refresh instead of IDR frames when set
to 1.
@item bluray-compat (@emph{bluray-compat})
Configure the encoder to be compatible with the bluray standard.
It is a shorthand for setting "bluray-compat=1 force-cfr=1".
@item b-bias (@emph{b-bias})
Set the influence on how often B-frames are used.
@item b-pyramid (@emph{b-pyramid})
Set method for keeping of some B-frames as references. Possible values:
@table @samp
@item none (@emph{none})
Disabled.
@item strict (@emph{strict})
Strictly hierarchical pyramid.
@item normal (@emph{normal})
Non-strict (not Blu-ray compatible).
@end table
@item mixed-refs
Enable the use of one reference per partition, as opposed to one
reference per macroblock when set to 1. When set to 0, it has the
same effect as @command{x264}'s @option{--no-mixed-refs} option.
@item 8x8dct
Enable adaptive spatial transform (high profile 8x8 transform)
when set to 1. When set to 0, it has the same effect as
@command{x264}'s @option{--no-8x8dct} option.
@item fast-pskip
Enable early SKIP detection on P-frames when set to 1. When set
to 0, it has the same effect as @command{x264}'s
@option{--no-fast-pskip} option.
@item aud (@emph{aud})
Enable use of access unit delimiters when set to 1.
@item mbtree
Enable use macroblock tree ratecontrol when set to 1. When set
to 0, it has the same effect as @command{x264}'s
@option{--no-mbtree} option.
@item deblock (@emph{deblock})
Set loop filter parameters, in @var{alpha}:@var{beta} form.
@item cplxblur (@emph{cplxblur})
Set fluctuations reduction in QP (before curve compression).
@item partitions (@emph{partitions})
Set partitions to consider as a comma-separated list of. Possible
values in the list:
@table @samp
@item p8x8
8x8 P-frame partition.
@item p4x4
4x4 P-frame partition.
@item b8x8
4x4 B-frame partition.
@item i8x8
8x8 I-frame partition.
@item i4x4
4x4 I-frame partition.
(Enabling @samp{p4x4} requires @samp{p8x8} to be enabled. Enabling
@samp{i8x8} requires adaptive spatial transform (@option{8x8dct}
option) to be enabled.)
@item none (@emph{none})
Do not consider any partitions.
@item all (@emph{all})
Consider every partition.
@end table
@item direct-pred (@emph{direct})
Set direct MV prediction mode. Possible values:
@table @samp
@item none (@emph{none})
Disable MV prediction.
@item spatial (@emph{spatial})
Enable spatial predicting.
@item temporal (@emph{temporal})
Enable temporal predicting.
@item auto (@emph{auto})
Automatically decided.
@end table
@item slice-max-size (@emph{slice-max-size})
Set the limit of the size of each slice in bytes. If not specified
but RTP payload size (@option{ps}) is specified, that is used.
@item stats (@emph{stats})
Set the file name for multi-pass stats.
@item nal-hrd (@emph{nal-hrd})
Set signal HRD information (requires @option{vbv-bufsize} to be set).
Possible values:
@table @samp
@item none (@emph{none})
Disable HRD information signaling.
@item vbr (@emph{vbr})
Variable bit rate.
@item cbr (@emph{cbr})
Constant bit rate (not allowed in MP4 container).
@end table
@item x264opts (N.A.)
Set any x264 option, see @command{x264 --fullhelp} for a list.
Argument is a list of @var{key}=@var{value} couples separated by
":". In @var{filter} and @var{psy-rd} options that use ":" as a separator
themselves, use "," instead. They accept it as well since long ago but this
is kept undocumented for some reason.
For example to specify libx264 encoding options with @command{ffmpeg}:
@example
ffmpeg -i foo.mpg -vcodec libx264 -x264opts keyint=123:min-keyint=20 -an out.mkv
@end example
@item x264-params (N.A.)
Override the x264 configuration using a :-separated list of key=value
parameters.
This option is functionally the same as the @option{x264opts}, but is
duplicated for compability with the Libav fork.
For example to specify libx264 encoding options with @command{ffmpeg}:
@example
ffmpeg -i INPUT -c:v libx264 -x264-params level=30:bframes=0:weightp=0:\
cabac=0:ref=1:vbv-maxrate=768:vbv-bufsize=2000:analyse=all:me=umh:\
no-fast-pskip=1:subq=6:8x8dct=0:trellis=0 OUTPUT
@end example
@end table
Encoding ffpresets for common usages are provided so they can be used with the
general presets system (e.g. passing the @option{pre} option).
@section libxvid
Xvid MPEG-4 Part 2 encoder wrapper.
This encoder requires the presence of the libxvidcore headers and library
during configuration. You need to explicitly configure the build with
@code{--enable-libxvid --enable-gpl}.
The native @code{mpeg4} encoder supports the MPEG-4 Part 2 format, so
users can encode to this format without this library.
@subsection Options
The following options are supported by the libxvid wrapper. Some of
the following options are listed but are not documented, and
correspond to shared codec options. See @ref{codec-options,,the Codec
Options chapter} for their documentation. The other shared options
which are not listed have no effect for the libxvid encoder.
@table @option
@item b
@item g
@item qmin
@item qmax
@item mpeg_quant
@item threads
@item bf
@item b_qfactor
@item b_qoffset
@item flags
Set specific encoding flags. Possible values:
@table @samp
@item mv4
Use four motion vector by macroblock.
@item aic
Enable high quality AC prediction.
@item gray
Only encode grayscale.
@item gmc
Enable the use of global motion compensation (GMC).
@item qpel
Enable quarter-pixel motion compensation.
@item cgop
Enable closed GOP.
@item global_header
Place global headers in extradata instead of every keyframe.
@end table
@item trellis
@item me_method
Set motion estimation method. Possible values in decreasing order of
speed and increasing order of quality:
@table @samp
@item zero
Use no motion estimation (default).
@item phods
@item x1
@item log
Enable advanced diamond zonal search for 16x16 blocks and half-pixel
refinement for 16x16 blocks. @samp{x1} and @samp{log} are aliases for
@samp{phods}.
@item epzs
Enable all of the things described above, plus advanced diamond zonal
search for 8x8 blocks, half-pixel refinement for 8x8 blocks, and motion
estimation on chroma planes.
@item full
Enable all of the things described above, plus extended 16x16 and 8x8
blocks search.
@end table
@item mbd
Set macroblock decision algorithm. Possible values in the increasing
order of quality:
@table @samp
@item simple
Use macroblock comparing function algorithm (default).
@item bits
Enable rate distortion-based half pixel and quarter pixel refinement for
16x16 blocks.
@item rd
Enable all of the things described above, plus rate distortion-based
half pixel and quarter pixel refinement for 8x8 blocks, and rate
distortion-based search using square pattern.
@end table
@item lumi_aq
Enable lumi masking adaptive quantization when set to 1. Default is 0
(disabled).
@item variance_aq
Enable variance adaptive quantization when set to 1. Default is 0
(disabled).
When combined with @option{lumi_aq}, the resulting quality will not
be better than any of the two specified individually. In other
words, the resulting quality will be the worse one of the two
effects.
@item ssim
Set structural similarity (SSIM) displaying method. Possible values:
@table @samp
@item off
Disable displaying of SSIM information.
@item avg
Output average SSIM at the end of encoding to stdout. The format of
showing the average SSIM is:
@example
Average SSIM: %f
@end example
For users who are not familiar with C, %f means a float number, or
a decimal (e.g. 0.939232).
@item frame
Output both per-frame SSIM data during encoding and average SSIM at
the end of encoding to stdout. The format of per-frame information
is:
@example
SSIM: avg: %1.3f min: %1.3f max: %1.3f
@end example
For users who are not familiar with C, %1.3f means a float number
rounded to 3 digits after the dot (e.g. 0.932).
@end table
@item ssim_acc
Set SSIM accuracy. Valid options are integers within the range of
0-4, while 0 gives the most accurate result and 4 computes the
fastest.
@end table
@section png
PNG image encoder.
@subsection Private options
@table @option
@item dpi @var{integer}
Set physical density of pixels, in dots per inch, unset by default
@item dpm @var{integer}
Set physical density of pixels, in dots per meter, unset by default
@end table
@section ProRes
Apple ProRes encoder.
FFmpeg contains 2 ProRes encoders, the prores-aw and prores-ks encoder.
The used encoder can be choosen with the @code{-vcodec} option.
@subsection Private Options for prores-ks
@table @option
@item profile @var{integer}
Select the ProRes profile to encode
@table @samp
@item proxy
@item lt
@item standard
@item hq
@item 4444
@end table
@item quant_mat @var{integer}
Select quantization matrix.
@table @samp
@item auto
@item default
@item proxy
@item lt
@item standard
@item hq
@end table
If set to @var{auto}, the matrix matching the profile will be picked.
If not set, the matrix providing the highest quality, @var{default}, will be
picked.
@item bits_per_mb @var{integer}
How many bits to allot for coding one macroblock. Different profiles use
between 200 and 2400 bits per macroblock, the maximum is 8000.
@item mbs_per_slice @var{integer}
Number of macroblocks in each slice (1-8); the default value (8)
should be good in almost all situations.
@item vendor @var{string}
Override the 4-byte vendor ID.
A custom vendor ID like @var{apl0} would claim the stream was produced by
the Apple encoder.
@item alpha_bits @var{integer}
Specify number of bits for alpha component.
Possible values are @var{0}, @var{8} and @var{16}.
Use @var{0} to disable alpha plane coding.
@end table
@subsection Speed considerations
In the default mode of operation the encoder has to honor frame constraints
(i.e. not produc frames with size bigger than requested) while still making
output picture as good as possible.
A frame containing a lot of small details is harder to compress and the encoder
would spend more time searching for appropriate quantizers for each slice.
Setting a higher @option{bits_per_mb} limit will improve the speed.
For the fastest encoding speed set the @option{qscale} parameter (4 is the
recommended value) and do not set a size constraint.
@c man end VIDEO ENCODERS

/contrib/sdk/sources/ffmpeg/doc/errno.txt
0,0 → 1,174
The following table lists most error codes found in various operating
systems supported by FFmpeg.
OS
Code Std F LBMWwb Text (YMMV)
E2BIG POSIX ++++++ Argument list too long
EACCES POSIX ++++++ Permission denied
EADDRINUSE POSIX +++..+ Address in use
EADDRNOTAVAIL POSIX +++..+ Cannot assign requested address
EADV +..... Advertise error
EAFNOSUPPORT POSIX +++..+ Address family not supported
EAGAIN POSIX + ++++++ Resource temporarily unavailable
EALREADY POSIX +++..+ Operation already in progress
EAUTH .++... Authentication error
EBADARCH ..+... Bad CPU type in executable
EBADE +..... Invalid exchange
EBADEXEC ..+... Bad executable
EBADF POSIX ++++++ Bad file descriptor
EBADFD +..... File descriptor in bad state
EBADMACHO ..+... Malformed Macho file
EBADMSG POSIX ++4... Bad message
EBADR +..... Invalid request descriptor
EBADRPC .++... RPC struct is bad
EBADRQC +..... Invalid request code
EBADSLT +..... Invalid slot
EBFONT +..... Bad font file format
EBUSY POSIX - ++++++ Device or resource busy
ECANCELED POSIX +++... Operation canceled
ECHILD POSIX ++++++ No child processes
ECHRNG +..... Channel number out of range
ECOMM +..... Communication error on send
ECONNABORTED POSIX +++..+ Software caused connection abort
ECONNREFUSED POSIX - +++ss+ Connection refused
ECONNRESET POSIX +++..+ Connection reset
EDEADLK POSIX ++++++ Resource deadlock avoided
EDEADLOCK +..++. File locking deadlock error
EDESTADDRREQ POSIX +++... Destination address required
EDEVERR ..+... Device error
EDOM C89 - ++++++ Numerical argument out of domain
EDOOFUS .F.... Programming error
EDOTDOT +..... RFS specific error
EDQUOT POSIX +++... Disc quota exceeded
EEXIST POSIX ++++++ File exists
EFAULT POSIX - ++++++ Bad address
EFBIG POSIX - ++++++ File too large
EFTYPE .++... Inappropriate file type or format
EHOSTDOWN +++... Host is down
EHOSTUNREACH POSIX +++..+ No route to host
EHWPOISON +..... Memory page has hardware error
EIDRM POSIX +++... Identifier removed
EILSEQ C99 ++++++ Illegal byte sequence
EINPROGRESS POSIX - +++ss+ Operation in progress
EINTR POSIX - ++++++ Interrupted system call
EINVAL POSIX + ++++++ Invalid argument
EIO POSIX + ++++++ I/O error
EISCONN POSIX +++..+ Socket is already connected
EISDIR POSIX ++++++ Is a directory
EISNAM +..... Is a named type file
EKEYEXPIRED +..... Key has expired
EKEYREJECTED +..... Key was rejected by service
EKEYREVOKED +..... Key has been revoked
EL2HLT +..... Level 2 halted
EL2NSYNC +..... Level 2 not synchronized
EL3HLT +..... Level 3 halted
EL3RST +..... Level 3 reset
ELIBACC +..... Can not access a needed shared library
ELIBBAD +..... Accessing a corrupted shared library
ELIBEXEC +..... Cannot exec a shared library directly
ELIBMAX +..... Too many shared libraries
ELIBSCN +..... .lib section in a.out corrupted
ELNRNG +..... Link number out of range
ELOOP POSIX +++..+ Too many levels of symbolic links
EMEDIUMTYPE +..... Wrong medium type
EMFILE POSIX ++++++ Too many open files
EMLINK POSIX ++++++ Too many links
EMSGSIZE POSIX +++..+ Message too long
EMULTIHOP POSIX ++4... Multihop attempted
ENAMETOOLONG POSIX - ++++++ Filen ame too long
ENAVAIL +..... No XENIX semaphores available
ENEEDAUTH .++... Need authenticator
ENETDOWN POSIX +++..+ Network is down
ENETRESET SUSv3 +++..+ Network dropped connection on reset
ENETUNREACH POSIX +++..+ Network unreachable
ENFILE POSIX ++++++ Too many open files in system
ENOANO +..... No anode
ENOATTR .++... Attribute not found
ENOBUFS POSIX - +++..+ No buffer space available
ENOCSI +..... No CSI structure available
ENODATA XSR +N4... No message available
ENODEV POSIX - ++++++ No such device
ENOENT POSIX - ++++++ No such file or directory
ENOEXEC POSIX ++++++ Exec format error
ENOFILE ...++. No such file or directory
ENOKEY +..... Required key not available
ENOLCK POSIX ++++++ No locks available
ENOLINK POSIX ++4... Link has been severed
ENOMEDIUM +..... No medium found
ENOMEM POSIX ++++++ Not enough space
ENOMSG POSIX +++..+ No message of desired type
ENONET +..... Machine is not on the network
ENOPKG +..... Package not installed
ENOPROTOOPT POSIX +++..+ Protocol not available
ENOSPC POSIX ++++++ No space left on device
ENOSR XSR +N4... No STREAM resources
ENOSTR XSR +N4... Not a STREAM
ENOSYS POSIX + ++++++ Function not implemented
ENOTBLK +++... Block device required
ENOTCONN POSIX +++..+ Socket is not connected
ENOTDIR POSIX ++++++ Not a directory
ENOTEMPTY POSIX ++++++ Directory not empty
ENOTNAM +..... Not a XENIX named type file
ENOTRECOVERABLE SUSv4 - +..... State not recoverable
ENOTSOCK POSIX +++..+ Socket operation on non-socket
ENOTSUP POSIX +++... Operation not supported
ENOTTY POSIX ++++++ Inappropriate I/O control operation
ENOTUNIQ +..... Name not unique on network
ENXIO POSIX ++++++ No such device or address
EOPNOTSUPP POSIX +++..+ Operation not supported (on socket)
EOVERFLOW POSIX +++..+ Value too large to be stored in data type
EOWNERDEAD SUSv4 +..... Owner died
EPERM POSIX - ++++++ Operation not permitted
EPFNOSUPPORT +++..+ Protocol family not supported
EPIPE POSIX - ++++++ Broken pipe
EPROCLIM .++... Too many processes
EPROCUNAVAIL .++... Bad procedure for program
EPROGMISMATCH .++... Program version wrong
EPROGUNAVAIL .++... RPC prog. not avail
EPROTO POSIX ++4... Protocol error
EPROTONOSUPPORT POSIX - +++ss+ Protocol not supported
EPROTOTYPE POSIX +++..+ Protocol wrong type for socket
EPWROFF ..+... Device power is off
ERANGE C89 - ++++++ Result too large
EREMCHG +..... Remote address changed
EREMOTE +++... Object is remote
EREMOTEIO +..... Remote I/O error
ERESTART +..... Interrupted system call should be restarted
ERFKILL +..... Operation not possible due to RF-kill
EROFS POSIX ++++++ Read-only file system
ERPCMISMATCH .++... RPC version wrong
ESHLIBVERS ..+... Shared library version mismatch
ESHUTDOWN +++..+ Cannot send after socket shutdown
ESOCKTNOSUPPORT +++... Socket type not supported
ESPIPE POSIX ++++++ Illegal seek
ESRCH POSIX ++++++ No such process
ESRMNT +..... Srmount error
ESTALE POSIX +++..+ Stale NFS file handle
ESTRPIPE +..... Streams pipe error
ETIME XSR +N4... Stream ioctl timeout
ETIMEDOUT POSIX - +++ss+ Connection timed out
ETOOMANYREFS +++... Too many references: cannot splice
ETXTBSY POSIX +++... Text file busy
EUCLEAN +..... Structure needs cleaning
EUNATCH +..... Protocol driver not attached
EUSERS +++... Too many users
EWOULDBLOCK POSIX +++..+ Operation would block
EXDEV POSIX ++++++ Cross-device link
EXFULL +..... Exchange full
Notations:
F: used in FFmpeg (-: a few times, +: a lot)
SUSv3: Single Unix Specification, version 3
SUSv4: Single Unix Specification, version 4
XSR: XSI STREAMS (obsolete)
OS: availability on some supported operating systems
L: GNU/Linux
B: BSD (F: FreeBSD, N: NetBSD)
M: MacOS X
W: Microsoft Windows (s: emulated with winsock, see libavformat/network.h)
w: Mingw32 (3.17) and Mingw64 (2.0.1)
b: BeOS

/contrib/sdk/sources/ffmpeg/doc/examples/Makefile
0,0 → 1,38
# use pkg-config for getting CFLAGS and LDLIBS
FFMPEG_LIBS= libavdevice \
libavformat \
libavfilter \
libavcodec \
libswresample \
libswscale \
libavutil \
CFLAGS += -Wall -g
CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
EXAMPLES= decoding_encoding \
demuxing \
filtering_video \
filtering_audio \
metadata \
muxing \
resampling_audio \
scaling_video \
OBJS=$(addsuffix .o,$(EXAMPLES))
# the following examples make explicit use of the math library
decoding_encoding: LDLIBS += -lm
muxing: LDLIBS += -lm
resampling_audio: LDLIBS += -lm
.phony: all clean-test clean
all: $(OBJS) $(EXAMPLES)
clean-test:
$(RM) test*.pgm test.h264 test.mp2 test.sw test.mpg
clean: clean-test
$(RM) $(EXAMPLES) $(OBJS)

/contrib/sdk/sources/ffmpeg/doc/examples/README
0,0 → 1,18
FFmpeg examples README
----------------------
Both following use cases rely on pkg-config and make, thus make sure
that you have them installed and working on your system.
1) Build the installed examples in a generic read/write user directory
Copy to a read/write user directory and just use "make", it will link
to the libraries on your system, assuming the PKG_CONFIG_PATH is
correctly configured.
2) Build the examples in-tree
Assuming you are in the source FFmpeg checkout directory, you need to build
FFmpeg (no need to make install in any prefix). Then you can go into
doc/examples and run a command such as PKG_CONFIG_PATH=pc-uninstalled make.

/contrib/sdk/sources/ffmpeg/doc/examples/decoding_encoding.c
0,0 → 1,650
/*
* Copyright (c) 2001 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* libavcodec API use example.
*
* Note that libavcodec only handles codecs (mpeg, mpeg4, etc...),
* not file formats (avi, vob, mp4, mov, mkv, mxf, flv, mpegts, mpegps, etc...). See library 'libavformat' for the
* format handling
* @example doc/examples/decoding_encoding.c
*/
#include <math.h>
#include <libavutil/opt.h>
#include <libavcodec/avcodec.h>
#include <libavutil/channel_layout.h>
#include <libavutil/common.h>
#include <libavutil/imgutils.h>
#include <libavutil/mathematics.h>
#include <libavutil/samplefmt.h>
#define INBUF_SIZE 4096
#define AUDIO_INBUF_SIZE 20480
#define AUDIO_REFILL_THRESH 4096
/* check that a given sample format is supported by the encoder */
static int check_sample_fmt(AVCodec *codec, enum AVSampleFormat sample_fmt)
{
const enum AVSampleFormat *p = codec->sample_fmts;
while (*p != AV_SAMPLE_FMT_NONE) {
if (*p == sample_fmt)
return 1;
p++;
}
return 0;
}
/* just pick the highest supported samplerate */
static int select_sample_rate(AVCodec *codec)
{
const int *p;
int best_samplerate = 0;
if (!codec->supported_samplerates)
return 44100;
p = codec->supported_samplerates;
while (*p) {
best_samplerate = FFMAX(*p, best_samplerate);
p++;
}
return best_samplerate;
}
/* select layout with the highest channel count */
static int select_channel_layout(AVCodec *codec)
{
const uint64_t *p;
uint64_t best_ch_layout = 0;
int best_nb_channels = 0;
if (!codec->channel_layouts)
return AV_CH_LAYOUT_STEREO;
p = codec->channel_layouts;
while (*p) {
int nb_channels = av_get_channel_layout_nb_channels(*p);
if (nb_channels > best_nb_channels) {
best_ch_layout = *p;
best_nb_channels = nb_channels;
}
p++;
}
return best_ch_layout;
}
/*
* Audio encoding example
*/
static void audio_encode_example(const char *filename)
{
AVCodec *codec;
AVCodecContext *c= NULL;
AVFrame *frame;
AVPacket pkt;
int i, j, k, ret, got_output;
int buffer_size;
FILE *f;
uint16_t *samples;
float t, tincr;
printf("Encode audio file %s\n", filename);
/* find the MP2 encoder */
codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
if (!codec) {
fprintf(stderr, "Codec not found\n");
exit(1);
}
c = avcodec_alloc_context3(codec);
if (!c) {
fprintf(stderr, "Could not allocate audio codec context\n");
exit(1);
}
/* put sample parameters */
c->bit_rate = 64000;
/* check that the encoder supports s16 pcm input */
c->sample_fmt = AV_SAMPLE_FMT_S16;
if (!check_sample_fmt(codec, c->sample_fmt)) {
fprintf(stderr, "Encoder does not support sample format %s",
av_get_sample_fmt_name(c->sample_fmt));
exit(1);
}
/* select other audio parameters supported by the encoder */
c->sample_rate = select_sample_rate(codec);
c->channel_layout = select_channel_layout(codec);
c->channels = av_get_channel_layout_nb_channels(c->channel_layout);
/* open it */
if (avcodec_open2(c, codec, NULL) < 0) {
fprintf(stderr, "Could not open codec\n");
exit(1);
}
f = fopen(filename, "wb");
if (!f) {
fprintf(stderr, "Could not open %s\n", filename);
exit(1);
}
/* frame containing input raw audio */
frame = avcodec_alloc_frame();
if (!frame) {
fprintf(stderr, "Could not allocate audio frame\n");
exit(1);
}
frame->nb_samples = c->frame_size;
frame->format = c->sample_fmt;
frame->channel_layout = c->channel_layout;
/* the codec gives us the frame size, in samples,
* we calculate the size of the samples buffer in bytes */
buffer_size = av_samples_get_buffer_size(NULL, c->channels, c->frame_size,
c->sample_fmt, 0);
samples = av_malloc(buffer_size);
if (!samples) {
fprintf(stderr, "Could not allocate %d bytes for samples buffer\n",
buffer_size);
exit(1);
}
/* setup the data pointers in the AVFrame */
ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
(const uint8_t*)samples, buffer_size, 0);
if (ret < 0) {
fprintf(stderr, "Could not setup audio frame\n");
exit(1);
}
/* encode a single tone sound */
t = 0;
tincr = 2 * M_PI * 440.0 / c->sample_rate;
for(i=0;i<200;i++) {
av_init_packet(&pkt);
pkt.data = NULL; // packet data will be allocated by the encoder
pkt.size = 0;
for (j = 0; j < c->frame_size; j++) {
samples[2*j] = (int)(sin(t) * 10000);
for (k = 1; k < c->channels; k++)
samples[2*j + k] = samples[2*j];
t += tincr;
}
/* encode the samples */
ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
if (ret < 0) {
fprintf(stderr, "Error encoding audio frame\n");
exit(1);
}
if (got_output) {
fwrite(pkt.data, 1, pkt.size, f);
av_free_packet(&pkt);
}
}
/* get the delayed frames */
for (got_output = 1; got_output; i++) {
ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
if (ret < 0) {
fprintf(stderr, "Error encoding frame\n");
exit(1);
}
if (got_output) {
fwrite(pkt.data, 1, pkt.size, f);
av_free_packet(&pkt);
}
}
fclose(f);
av_freep(&samples);
avcodec_free_frame(&frame);
avcodec_close(c);
av_free(c);
}
/*
* Audio decoding.
*/
static void audio_decode_example(const char *outfilename, const char *filename)
{
AVCodec *codec;
AVCodecContext *c= NULL;
int len;
FILE *f, *outfile;
uint8_t inbuf[AUDIO_INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
AVPacket avpkt;
AVFrame *decoded_frame = NULL;
av_init_packet(&avpkt);
printf("Decode audio file %s to %s\n", filename, outfilename);
/* find the mpeg audio decoder */
codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
if (!codec) {
fprintf(stderr, "Codec not found\n");
exit(1);
}
c = avcodec_alloc_context3(codec);
if (!c) {
fprintf(stderr, "Could not allocate audio codec context\n");
exit(1);
}
/* open it */
if (avcodec_open2(c, codec, NULL) < 0) {
fprintf(stderr, "Could not open codec\n");
exit(1);
}
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Could not open %s\n", filename);
exit(1);
}
outfile = fopen(outfilename, "wb");
if (!outfile) {
av_free(c);
exit(1);
}
/* decode until eof */
avpkt.data = inbuf;
avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);
while (avpkt.size > 0) {
int got_frame = 0;
if (!decoded_frame) {
if (!(decoded_frame = avcodec_alloc_frame())) {
fprintf(stderr, "Could not allocate audio frame\n");
exit(1);
}
} else
avcodec_get_frame_defaults(decoded_frame);
len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
if (len < 0) {
fprintf(stderr, "Error while decoding\n");
exit(1);
}
if (got_frame) {
/* if a frame has been decoded, output it */
int data_size = av_samples_get_buffer_size(NULL, c->channels,
decoded_frame->nb_samples,
c->sample_fmt, 1);
fwrite(decoded_frame->data[0], 1, data_size, outfile);
}
avpkt.size -= len;
avpkt.data += len;
avpkt.dts =
avpkt.pts = AV_NOPTS_VALUE;
if (avpkt.size < AUDIO_REFILL_THRESH) {
/* Refill the input buffer, to avoid trying to decode
* incomplete frames. Instead of this, one could also use
* a parser, or use a proper container format through
* libavformat. */
memmove(inbuf, avpkt.data, avpkt.size);
avpkt.data = inbuf;
len = fread(avpkt.data + avpkt.size, 1,
AUDIO_INBUF_SIZE - avpkt.size, f);
if (len > 0)
avpkt.size += len;
}
}
fclose(outfile);
fclose(f);
avcodec_close(c);
av_free(c);
avcodec_free_frame(&decoded_frame);
}
/*
* Video encoding example
*/
static void video_encode_example(const char *filename, int codec_id)
{
AVCodec *codec;
AVCodecContext *c= NULL;
int i, ret, x, y, got_output;
FILE *f;
AVFrame *frame;
AVPacket pkt;
uint8_t endcode[] = { 0, 0, 1, 0xb7 };
printf("Encode video file %s\n", filename);
/* find the mpeg1 video encoder */
codec = avcodec_find_encoder(codec_id);
if (!codec) {
fprintf(stderr, "Codec not found\n");
exit(1);
}
c = avcodec_alloc_context3(codec);
if (!c) {
fprintf(stderr, "Could not allocate video codec context\n");
exit(1);
}
/* put sample parameters */
c->bit_rate = 400000;
/* resolution must be a multiple of two */
c->width = 352;
c->height = 288;
/* frames per second */
c->time_base= (AVRational){1,25};
c->gop_size = 10; /* emit one intra frame every ten frames */
c->max_b_frames=1;
c->pix_fmt = AV_PIX_FMT_YUV420P;
if(codec_id == AV_CODEC_ID_H264)
av_opt_set(c->priv_data, "preset", "slow", 0);
/* open it */
if (avcodec_open2(c, codec, NULL) < 0) {
fprintf(stderr, "Could not open codec\n");
exit(1);
}
f = fopen(filename, "wb");
if (!f) {
fprintf(stderr, "Could not open %s\n", filename);
exit(1);
}
frame = avcodec_alloc_frame();
if (!frame) {
fprintf(stderr, "Could not allocate video frame\n");
exit(1);
}
frame->format = c->pix_fmt;
frame->width = c->width;
frame->height = c->height;
/* the image can be allocated by any means and av_image_alloc() is
* just the most convenient way if av_malloc() is to be used */
ret = av_image_alloc(frame->data, frame->linesize, c->width, c->height,
c->pix_fmt, 32);
if (ret < 0) {
fprintf(stderr, "Could not allocate raw picture buffer\n");
exit(1);
}
/* encode 1 second of video */
for(i=0;i<25;i++) {
av_init_packet(&pkt);
pkt.data = NULL; // packet data will be allocated by the encoder
pkt.size = 0;
fflush(stdout);
/* prepare a dummy image */
/* Y */
for(y=0;y<c->height;y++) {
for(x=0;x<c->width;x++) {
frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
}
}
/* Cb and Cr */
for(y=0;y<c->height/2;y++) {
for(x=0;x<c->width/2;x++) {
frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
}
}
frame->pts = i;
/* encode the image */
ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
if (ret < 0) {
fprintf(stderr, "Error encoding frame\n");
exit(1);
}
if (got_output) {
printf("Write frame %3d (size=%5d)\n", i, pkt.size);
fwrite(pkt.data, 1, pkt.size, f);
av_free_packet(&pkt);
}
}
/* get the delayed frames */
for (got_output = 1; got_output; i++) {
fflush(stdout);
ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
if (ret < 0) {
fprintf(stderr, "Error encoding frame\n");
exit(1);
}
if (got_output) {
printf("Write frame %3d (size=%5d)\n", i, pkt.size);
fwrite(pkt.data, 1, pkt.size, f);
av_free_packet(&pkt);
}
}
/* add sequence end code to have a real mpeg file */
fwrite(endcode, 1, sizeof(endcode), f);
fclose(f);
avcodec_close(c);
av_free(c);
av_freep(&frame->data[0]);
avcodec_free_frame(&frame);
printf("\n");
}
/*
* Video decoding example
*/
static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
char *filename)
{
FILE *f;
int i;
f=fopen(filename,"w");
fprintf(f,"P5\n%d %d\n%d\n",xsize,ysize,255);
for(i=0;i<ysize;i++)
fwrite(buf + i * wrap,1,xsize,f);
fclose(f);
}
static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
{
int len, got_frame;
char buf[1024];
len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
if (len < 0) {
fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
return len;
}
if (got_frame) {
printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
fflush(stdout);
/* the picture is allocated by the decoder, no need to free it */
snprintf(buf, sizeof(buf), outfilename, *frame_count);
pgm_save(frame->data[0], frame->linesize[0],
avctx->width, avctx->height, buf);
(*frame_count)++;
}
if (pkt->data) {
pkt->size -= len;
pkt->data += len;
}
return 0;
}
static void video_decode_example(const char *outfilename, const char *filename)
{
AVCodec *codec;
AVCodecContext *c= NULL;
int frame_count;
FILE *f;
AVFrame *frame;
uint8_t inbuf[INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];
AVPacket avpkt;
av_init_packet(&avpkt);
/* set end of buffer to 0 (this ensures that no overreading happens for damaged mpeg streams) */
memset(inbuf + INBUF_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE);
printf("Decode video file %s to %s\n", filename, outfilename);
/* find the mpeg1 video decoder */
codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
if (!codec) {
fprintf(stderr, "Codec not found\n");
exit(1);
}
c = avcodec_alloc_context3(codec);
if (!c) {
fprintf(stderr, "Could not allocate video codec context\n");
exit(1);
}
if(codec->capabilities&CODEC_CAP_TRUNCATED)
c->flags|= CODEC_FLAG_TRUNCATED; /* we do not send complete frames */
/* For some codecs, such as msmpeg4 and mpeg4, width and height
MUST be initialized there because this information is not
available in the bitstream. */
/* open it */
if (avcodec_open2(c, codec, NULL) < 0) {
fprintf(stderr, "Could not open codec\n");
exit(1);
}
f = fopen(filename, "rb");
if (!f) {
fprintf(stderr, "Could not open %s\n", filename);
exit(1);
}
frame = avcodec_alloc_frame();
if (!frame) {
fprintf(stderr, "Could not allocate video frame\n");
exit(1);
}
frame_count = 0;
for(;;) {
avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
if (avpkt.size == 0)
break;
/* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
and this is the only method to use them because you cannot
know the compressed data size before analysing it.
BUT some other codecs (msmpeg4, mpeg4) are inherently frame
based, so you must call them with all the data for one
frame exactly. You must also initialize 'width' and
'height' before initializing them. */
/* NOTE2: some codecs allow the raw parameters (frame size,
sample rate) to be changed at any frame. We handle this, so
you should also take care of it */
/* here, we use a stream based decoder (mpeg1video), so we
feed decoder and see if it could decode a frame */
avpkt.data = inbuf;
while (avpkt.size > 0)
if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
exit(1);
}
/* some codecs, such as MPEG, transmit the I and P frame with a
latency of one frame. You must do the following to have a
chance to get the last frame of the video */
avpkt.data = NULL;
avpkt.size = 0;
decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);
fclose(f);
avcodec_close(c);
av_free(c);
avcodec_free_frame(&frame);
printf("\n");
}
int main(int argc, char **argv)
{
const char *output_type;
/* register all the codecs */
avcodec_register_all();
if (argc < 2) {
printf("usage: %s output_type\n"
"API example program to decode/encode a media stream with libavcodec.\n"
"This program generates a synthetic stream and encodes it to a file\n"
"named test.h264, test.mp2 or test.mpg depending on output_type.\n"
"The encoded stream is then decoded and written to a raw data output.\n"
"output_type must be choosen between 'h264', 'mp2', 'mpg'.\n",
argv[0]);
return 1;
}
output_type = argv[1];
if (!strcmp(output_type, "h264")) {
video_encode_example("test.h264", AV_CODEC_ID_H264);
} else if (!strcmp(output_type, "mp2")) {
audio_encode_example("test.mp2");
audio_decode_example("test.sw", "test.mp2");
} else if (!strcmp(output_type, "mpg")) {
video_encode_example("test.mpg", AV_CODEC_ID_MPEG1VIDEO);
video_decode_example("test%02d.pgm", "test.mpg");
} else {
fprintf(stderr, "Invalid output type '%s', choose between 'h264', 'mp2', or 'mpg'\n",
output_type);
return 1;
}
return 0;
}

/contrib/sdk/sources/ffmpeg/doc/examples/demuxing.c
0,0 → 1,341
/*
* Copyright (c) 2012 Stefano Sabatini
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* libavformat demuxing API use example.
*
* Show how to use the libavformat and libavcodec API to demux and
* decode audio and video data.
* @example doc/examples/demuxing.c
*/
#include <libavutil/imgutils.h>
#include <libavutil/samplefmt.h>
#include <libavutil/timestamp.h>
#include <libavformat/avformat.h>
static AVFormatContext *fmt_ctx = NULL;
static AVCodecContext *video_dec_ctx = NULL, *audio_dec_ctx;
static AVStream *video_stream = NULL, *audio_stream = NULL;
static const char *src_filename = NULL;
static const char *video_dst_filename = NULL;
static const char *audio_dst_filename = NULL;
static FILE *video_dst_file = NULL;
static FILE *audio_dst_file = NULL;
static uint8_t *video_dst_data[4] = {NULL};
static int video_dst_linesize[4];
static int video_dst_bufsize;
static int video_stream_idx = -1, audio_stream_idx = -1;
static AVFrame *frame = NULL;
static AVPacket pkt;
static int video_frame_count = 0;
static int audio_frame_count = 0;
static int decode_packet(int *got_frame, int cached)
{
int ret = 0;
int decoded = pkt.size;
if (pkt.stream_index == video_stream_idx) {
/* decode video frame */
ret = avcodec_decode_video2(video_dec_ctx, frame, got_frame, &pkt);
if (ret < 0) {
fprintf(stderr, "Error decoding video frame\n");
return ret;
}
if (*got_frame) {
printf("video_frame%s n:%d coded_n:%d pts:%s\n",
cached ? "(cached)" : "",
video_frame_count++, frame->coded_picture_number,
av_ts2timestr(frame->pts, &video_dec_ctx->time_base));
/* copy decoded frame to destination buffer:
* this is required since rawvideo expects non aligned data */
av_image_copy(video_dst_data, video_dst_linesize,
(const uint8_t **)(frame->data), frame->linesize,
video_dec_ctx->pix_fmt, video_dec_ctx->width, video_dec_ctx->height);
/* write to rawvideo file */
fwrite(video_dst_data[0], 1, video_dst_bufsize, video_dst_file);
}
} else if (pkt.stream_index == audio_stream_idx) {
/* decode audio frame */
ret = avcodec_decode_audio4(audio_dec_ctx, frame, got_frame, &pkt);
if (ret < 0) {
fprintf(stderr, "Error decoding audio frame\n");
return ret;
}
/* Some audio decoders decode only part of the packet, and have to be
* called again with the remainder of the packet data.
* Sample: fate-suite/lossless-audio/luckynight-partial.shn
* Also, some decoders might over-read the packet. */
decoded = FFMIN(ret, pkt.size);
if (*got_frame) {
size_t unpadded_linesize = frame->nb_samples * av_get_bytes_per_sample(frame->format);
printf("audio_frame%s n:%d nb_samples:%d pts:%s\n",
cached ? "(cached)" : "",
audio_frame_count++, frame->nb_samples,
av_ts2timestr(frame->pts, &audio_dec_ctx->time_base));
/* Write the raw audio data samples of the first plane. This works
* fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,
* most audio decoders output planar audio, which uses a separate
* plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).
* In other words, this code will write only the first audio channel
* in these cases.
* You should use libswresample or libavfilter to convert the frame
* to packed data. */
fwrite(frame->extended_data[0], 1, unpadded_linesize, audio_dst_file);
}
}
return decoded;
}
static int open_codec_context(int *stream_idx,
AVFormatContext *fmt_ctx, enum AVMediaType type)
{
int ret;
AVStream *st;
AVCodecContext *dec_ctx = NULL;
AVCodec *dec = NULL;
ret = av_find_best_stream(fmt_ctx, type, -1, -1, NULL, 0);
if (ret < 0) {
fprintf(stderr, "Could not find %s stream in input file '%s'\n",
av_get_media_type_string(type), src_filename);
return ret;
} else {
*stream_idx = ret;
st = fmt_ctx->streams[*stream_idx];
/* find decoder for the stream */
dec_ctx = st->codec;
dec = avcodec_find_decoder(dec_ctx->codec_id);
if (!dec) {
fprintf(stderr, "Failed to find %s codec\n",
av_get_media_type_string(type));
return ret;
}
if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
fprintf(stderr, "Failed to open %s codec\n",
av_get_media_type_string(type));
return ret;
}
}
return 0;
}
static int get_format_from_sample_fmt(const char **fmt,
enum AVSampleFormat sample_fmt)
{
int i;
struct sample_fmt_entry {
enum AVSampleFormat sample_fmt; const char *fmt_be, *fmt_le;
} sample_fmt_entries[] = {
{ AV_SAMPLE_FMT_U8, "u8", "u8" },
{ AV_SAMPLE_FMT_S16, "s16be", "s16le" },
{ AV_SAMPLE_FMT_S32, "s32be", "s32le" },
{ AV_SAMPLE_FMT_FLT, "f32be", "f32le" },
{ AV_SAMPLE_FMT_DBL, "f64be", "f64le" },
};
*fmt = NULL;
for (i = 0; i < FF_ARRAY_ELEMS(sample_fmt_entries); i++) {
struct sample_fmt_entry *entry = &sample_fmt_entries[i];
if (sample_fmt == entry->sample_fmt) {
*fmt = AV_NE(entry->fmt_be, entry->fmt_le);
return 0;
}
}
fprintf(stderr,
"sample format %s is not supported as output format\n",
av_get_sample_fmt_name(sample_fmt));
return -1;
}
int main (int argc, char **argv)
{
int ret = 0, got_frame;
if (argc != 4) {
fprintf(stderr, "usage: %s input_file video_output_file audio_output_file\n"
"API example program to show how to read frames from an input file.\n"
"This program reads frames from a file, decodes them, and writes decoded\n"
"video frames to a rawvideo file named video_output_file, and decoded\n"
"audio frames to a rawaudio file named audio_output_file.\n"
"\n", argv[0]);
exit(1);
}
src_filename = argv[1];
video_dst_filename = argv[2];
audio_dst_filename = argv[3];
/* register all formats and codecs */
av_register_all();
/* open input file, and allocate format context */
if (avformat_open_input(&fmt_ctx, src_filename, NULL, NULL) < 0) {
fprintf(stderr, "Could not open source file %s\n", src_filename);
exit(1);
}
/* retrieve stream information */
if (avformat_find_stream_info(fmt_ctx, NULL) < 0) {
fprintf(stderr, "Could not find stream information\n");
exit(1);
}
if (open_codec_context(&video_stream_idx, fmt_ctx, AVMEDIA_TYPE_VIDEO) >= 0) {
video_stream = fmt_ctx->streams[video_stream_idx];
video_dec_ctx = video_stream->codec;
video_dst_file = fopen(video_dst_filename, "wb");
if (!video_dst_file) {
fprintf(stderr, "Could not open destination file %s\n", video_dst_filename);
ret = 1;
goto end;
}
/* allocate image where the decoded image will be put */
ret = av_image_alloc(video_dst_data, video_dst_linesize,
video_dec_ctx->width, video_dec_ctx->height,
video_dec_ctx->pix_fmt, 1);
if (ret < 0) {
fprintf(stderr, "Could not allocate raw video buffer\n");
goto end;
}
video_dst_bufsize = ret;
}
if (open_codec_context(&audio_stream_idx, fmt_ctx, AVMEDIA_TYPE_AUDIO) >= 0) {
audio_stream = fmt_ctx->streams[audio_stream_idx];
audio_dec_ctx = audio_stream->codec;
audio_dst_file = fopen(audio_dst_filename, "wb");
if (!audio_dst_file) {
fprintf(stderr, "Could not open destination file %s\n", video_dst_filename);
ret = 1;
goto end;
}
}
/* dump input information to stderr */
av_dump_format(fmt_ctx, 0, src_filename, 0);
if (!audio_stream && !video_stream) {
fprintf(stderr, "Could not find audio or video stream in the input, aborting\n");
ret = 1;
goto end;
}
frame = avcodec_alloc_frame();
if (!frame) {
fprintf(stderr, "Could not allocate frame\n");
ret = AVERROR(ENOMEM);
goto end;
}
/* initialize packet, set data to NULL, let the demuxer fill it */
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
if (video_stream)
printf("Demuxing video from file '%s' into '%s'\n", src_filename, video_dst_filename);
if (audio_stream)
printf("Demuxing audio from file '%s' into '%s'\n", src_filename, audio_dst_filename);
/* read frames from the file */
while (av_read_frame(fmt_ctx, &pkt) >= 0) {
AVPacket orig_pkt = pkt;
do {
ret = decode_packet(&got_frame, 0);
if (ret < 0)
break;
pkt.data += ret;
pkt.size -= ret;
} while (pkt.size > 0);
av_free_packet(&orig_pkt);
}
/* flush cached frames */
pkt.data = NULL;
pkt.size = 0;
do {
decode_packet(&got_frame, 1);
} while (got_frame);
printf("Demuxing succeeded.\n");
if (video_stream) {
printf("Play the output video file with the command:\n"
"ffplay -f rawvideo -pix_fmt %s -video_size %dx%d %s\n",
av_get_pix_fmt_name(video_dec_ctx->pix_fmt), video_dec_ctx->width, video_dec_ctx->height,
video_dst_filename);
}
if (audio_stream) {
enum AVSampleFormat sfmt = audio_dec_ctx->sample_fmt;
int n_channels = audio_dec_ctx->channels;
const char *fmt;
if (av_sample_fmt_is_planar(sfmt)) {
const char *packed = av_get_sample_fmt_name(sfmt);
printf("Warning: the sample format the decoder produced is planar "
"(%s). This example will output the first channel only.\n",
packed ? packed : "?");
sfmt = av_get_packed_sample_fmt(sfmt);
n_channels = 1;
}
if ((ret = get_format_from_sample_fmt(&fmt, sfmt)) < 0)
goto end;
printf("Play the output audio file with the command:\n"
"ffplay -f %s -ac %d -ar %d %s\n",
fmt, n_channels, audio_dec_ctx->sample_rate,
audio_dst_filename);
}
end:
if (video_dec_ctx)
avcodec_close(video_dec_ctx);
if (audio_dec_ctx)
avcodec_close(audio_dec_ctx);
avformat_close_input(&fmt_ctx);
if (video_dst_file)
fclose(video_dst_file);
if (audio_dst_file)
fclose(audio_dst_file);
av_free(frame);
av_free(video_dst_data[0]);
return ret < 0;
}

/contrib/sdk/sources/ffmpeg/doc/examples/filtering_audio.c
0,0 → 1,265
/*
* Copyright (c) 2010 Nicolas George
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2012 Clément Bœsch
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* API example for audio decoding and filtering
* @example doc/examples/filtering_audio.c
*/
#include <unistd.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/avfiltergraph.h>
#include <libavfilter/avcodec.h>
#include <libavfilter/buffersink.h>
#include <libavfilter/buffersrc.h>
#include <libavutil/opt.h>
static const char *filter_descr = "aresample=8000,aformat=sample_fmts=s16:channel_layouts=mono";
static const char *player = "ffplay -f s16le -ar 8000 -ac 1 -";
static AVFormatContext *fmt_ctx;
static AVCodecContext *dec_ctx;
AVFilterContext *buffersink_ctx;
AVFilterContext *buffersrc_ctx;
AVFilterGraph *filter_graph;
static int audio_stream_index = -1;
static int open_input_file(const char *filename)
{
int ret;
AVCodec *dec;
if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
return ret;
}
if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
return ret;
}
/* select the audio stream */
ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &dec, 0);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find a audio stream in the input file\n");
return ret;
}
audio_stream_index = ret;
dec_ctx = fmt_ctx->streams[audio_stream_index]->codec;
av_opt_set_int(dec_ctx, "refcounted_frames", 1, 0);
/* init the audio decoder */
if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open audio decoder\n");
return ret;
}
return 0;
}
static int init_filters(const char *filters_descr)
{
char args[512];
int ret;
AVFilter *abuffersrc = avfilter_get_by_name("abuffer");
AVFilter *abuffersink = avfilter_get_by_name("abuffersink");
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
static const enum AVSampleFormat out_sample_fmts[] = { AV_SAMPLE_FMT_S16, -1 };
static const int64_t out_channel_layouts[] = { AV_CH_LAYOUT_MONO, -1 };
static const int out_sample_rates[] = { 8000, -1 };
const AVFilterLink *outlink;
AVRational time_base = fmt_ctx->streams[audio_stream_index]->time_base;
filter_graph = avfilter_graph_alloc();
/* buffer audio source: the decoded frames from the decoder will be inserted here. */
if (!dec_ctx->channel_layout)
dec_ctx->channel_layout = av_get_default_channel_layout(dec_ctx->channels);
snprintf(args, sizeof(args),
"time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64,
time_base.num, time_base.den, dec_ctx->sample_rate,
av_get_sample_fmt_name(dec_ctx->sample_fmt), dec_ctx->channel_layout);
ret = avfilter_graph_create_filter(&buffersrc_ctx, abuffersrc, "in",
args, NULL, filter_graph);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer source\n");
return ret;
}
/* buffer audio sink: to terminate the filter chain. */
ret = avfilter_graph_create_filter(&buffersink_ctx, abuffersink, "out",
NULL, NULL, filter_graph);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer sink\n");
return ret;
}
ret = av_opt_set_int_list(buffersink_ctx, "sample_fmts", out_sample_fmts, -1,
AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot set output sample format\n");
return ret;
}
ret = av_opt_set_int_list(buffersink_ctx, "channel_layouts", out_channel_layouts, -1,
AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot set output channel layout\n");
return ret;
}
ret = av_opt_set_int_list(buffersink_ctx, "sample_rates", out_sample_rates, -1,
AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot set output sample rate\n");
return ret;
}
/* Endpoints for the filter graph. */
outputs->name = av_strdup("in");
outputs->filter_ctx = buffersrc_ctx;
outputs->pad_idx = 0;
outputs->next = NULL;
inputs->name = av_strdup("out");
inputs->filter_ctx = buffersink_ctx;
inputs->pad_idx = 0;
inputs->next = NULL;
if ((ret = avfilter_graph_parse_ptr(filter_graph, filters_descr,
&inputs, &outputs, NULL)) < 0)
return ret;
if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
return ret;
/* Print summary of the sink buffer
* Note: args buffer is reused to store channel layout string */
outlink = buffersink_ctx->inputs[0];
av_get_channel_layout_string(args, sizeof(args), -1, outlink->channel_layout);
av_log(NULL, AV_LOG_INFO, "Output: srate:%dHz fmt:%s chlayout:%s\n",
(int)outlink->sample_rate,
(char *)av_x_if_null(av_get_sample_fmt_name(outlink->format), "?"),
args);
return 0;
}
static void print_frame(const AVFrame *frame)
{
const int n = frame->nb_samples * av_get_channel_layout_nb_channels(av_frame_get_channel_layout(frame));
const uint16_t *p = (uint16_t*)frame->data[0];
const uint16_t *p_end = p + n;
while (p < p_end) {
fputc(*p & 0xff, stdout);
fputc(*p>>8 & 0xff, stdout);
p++;
}
fflush(stdout);
}
int main(int argc, char **argv)
{
int ret;
AVPacket packet;
AVFrame *frame = av_frame_alloc();
AVFrame *filt_frame = av_frame_alloc();
int got_frame;
if (!frame || !filt_frame) {
perror("Could not allocate frame");
exit(1);
}
if (argc != 2) {
fprintf(stderr, "Usage: %s file | %s\n", argv[0], player);
exit(1);
}
avcodec_register_all();
av_register_all();
avfilter_register_all();
if ((ret = open_input_file(argv[1])) < 0)
goto end;
if ((ret = init_filters(filter_descr)) < 0)
goto end;
/* read all packets */
while (1) {
if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
break;
if (packet.stream_index == audio_stream_index) {
avcodec_get_frame_defaults(frame);
got_frame = 0;
ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, &packet);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error decoding audio\n");
continue;
}
if (got_frame) {
/* push the audio data from decoded frame into the filtergraph */
if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, 0) < 0) {
av_log(NULL, AV_LOG_ERROR, "Error while feeding the audio filtergraph\n");
break;
}
/* pull filtered audio from the filtergraph */
while (1) {
ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
if(ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
break;
if(ret < 0)
goto end;
print_frame(filt_frame);
av_frame_unref(filt_frame);
}
}
}
av_free_packet(&packet);
}
end:
avfilter_graph_free(&filter_graph);
if (dec_ctx)
avcodec_close(dec_ctx);
avformat_close_input(&fmt_ctx);
av_frame_free(&frame);
av_frame_free(&filt_frame);
if (ret < 0 && ret != AVERROR_EOF) {
char buf[1024];
av_strerror(ret, buf, sizeof(buf));
fprintf(stderr, "Error occurred: %s\n", buf);
exit(1);
}
exit(0);
}

/contrib/sdk/sources/ffmpeg/doc/examples/filtering_video.c
0,0 → 1,251
/*
* Copyright (c) 2010 Nicolas George
* Copyright (c) 2011 Stefano Sabatini
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* API example for decoding and filtering
* @example doc/examples/filtering_video.c
*/
#define _XOPEN_SOURCE 600 /* for usleep */
#include <unistd.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/avfiltergraph.h>
#include <libavfilter/avcodec.h>
#include <libavfilter/buffersink.h>
#include <libavfilter/buffersrc.h>
const char *filter_descr = "scale=78:24";
static AVFormatContext *fmt_ctx;
static AVCodecContext *dec_ctx;
AVFilterContext *buffersink_ctx;
AVFilterContext *buffersrc_ctx;
AVFilterGraph *filter_graph;
static int video_stream_index = -1;
static int64_t last_pts = AV_NOPTS_VALUE;
static int open_input_file(const char *filename)
{
int ret;
AVCodec *dec;
if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
return ret;
}
if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
return ret;
}
/* select the video stream */
ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &dec, 0);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot find a video stream in the input file\n");
return ret;
}
video_stream_index = ret;
dec_ctx = fmt_ctx->streams[video_stream_index]->codec;
/* init the video decoder */
if ((ret = avcodec_open2(dec_ctx, dec, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open video decoder\n");
return ret;
}
return 0;
}
static int init_filters(const char *filters_descr)
{
char args[512];
int ret;
AVFilter *buffersrc = avfilter_get_by_name("buffer");
AVFilter *buffersink = avfilter_get_by_name("buffersink");
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
AVBufferSinkParams *buffersink_params;
filter_graph = avfilter_graph_alloc();
/* buffer video source: the decoded frames from the decoder will be inserted here. */
snprintf(args, sizeof(args),
"video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
dec_ctx->time_base.num, dec_ctx->time_base.den,
dec_ctx->sample_aspect_ratio.num, dec_ctx->sample_aspect_ratio.den);
ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in",
args, NULL, filter_graph);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create buffer source\n");
return ret;
}
/* buffer video sink: to terminate the filter chain. */
buffersink_params = av_buffersink_params_alloc();
buffersink_params->pixel_fmts = pix_fmts;
ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out",
NULL, buffersink_params, filter_graph);
av_free(buffersink_params);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink\n");
return ret;
}
/* Endpoints for the filter graph. */
outputs->name = av_strdup("in");
outputs->filter_ctx = buffersrc_ctx;
outputs->pad_idx = 0;
outputs->next = NULL;
inputs->name = av_strdup("out");
inputs->filter_ctx = buffersink_ctx;
inputs->pad_idx = 0;
inputs->next = NULL;
if ((ret = avfilter_graph_parse_ptr(filter_graph, filters_descr,
&inputs, &outputs, NULL)) < 0)
return ret;
if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
return ret;
return 0;
}
static void display_frame(const AVFrame *frame, AVRational time_base)
{
int x, y;
uint8_t *p0, *p;
int64_t delay;
if (frame->pts != AV_NOPTS_VALUE) {
if (last_pts != AV_NOPTS_VALUE) {
/* sleep roughly the right amount of time;
* usleep is in microseconds, just like AV_TIME_BASE. */
delay = av_rescale_q(frame->pts - last_pts,
time_base, AV_TIME_BASE_Q);
if (delay > 0 && delay < 1000000)
usleep(delay);
}
last_pts = frame->pts;
}
/* Trivial ASCII grayscale display. */
p0 = frame->data[0];
puts("\033c");
for (y = 0; y < frame->height; y++) {
p = p0;
for (x = 0; x < frame->width; x++)
putchar(" .-+#"[*(p++) / 52]);
putchar('\n');
p0 += frame->linesize[0];
}
fflush(stdout);
}
int main(int argc, char **argv)
{
int ret;
AVPacket packet;
AVFrame *frame = av_frame_alloc();
AVFrame *filt_frame = av_frame_alloc();
int got_frame;
if (!frame || !filt_frame) {
perror("Could not allocate frame");
exit(1);
}
if (argc != 2) {
fprintf(stderr, "Usage: %s file\n", argv[0]);
exit(1);
}
avcodec_register_all();
av_register_all();
avfilter_register_all();
if ((ret = open_input_file(argv[1])) < 0)
goto end;
if ((ret = init_filters(filter_descr)) < 0)
goto end;
/* read all packets */
while (1) {
if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
break;
if (packet.stream_index == video_stream_index) {
avcodec_get_frame_defaults(frame);
got_frame = 0;
ret = avcodec_decode_video2(dec_ctx, frame, &got_frame, &packet);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error decoding video\n");
break;
}
if (got_frame) {
frame->pts = av_frame_get_best_effort_timestamp(frame);
/* push the decoded frame into the filtergraph */
if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
break;
}
/* pull filtered frames from the filtergraph */
while (1) {
ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
break;
if (ret < 0)
goto end;
display_frame(filt_frame, buffersink_ctx->inputs[0]->time_base);
av_frame_unref(filt_frame);
}
}
}
av_free_packet(&packet);
}
end:
avfilter_graph_free(&filter_graph);
if (dec_ctx)
avcodec_close(dec_ctx);
avformat_close_input(&fmt_ctx);
av_frame_free(&frame);
av_frame_free(&filt_frame);
if (ret < 0 && ret != AVERROR_EOF) {
char buf[1024];
av_strerror(ret, buf, sizeof(buf));
fprintf(stderr, "Error occurred: %s\n", buf);
exit(1);
}
exit(0);
}

/contrib/sdk/sources/ffmpeg/doc/examples/metadata.c
0,0 → 1,56
/*
* Copyright (c) 2011 Reinhard Tartler
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* Shows how the metadata API can be used in application programs.
* @example doc/examples/metadata.c
*/
#include <stdio.h>
#include <libavformat/avformat.h>
#include <libavutil/dict.h>
int main (int argc, char **argv)
{
AVFormatContext *fmt_ctx = NULL;
AVDictionaryEntry *tag = NULL;
int ret;
if (argc != 2) {
printf("usage: %s <input_file>\n"
"example program to demonstrate the use of the libavformat metadata API.\n"
"\n", argv[0]);
return 1;
}
av_register_all();
if ((ret = avformat_open_input(&fmt_ctx, argv[1], NULL, NULL)))
return ret;
while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
printf("%s=%s\n", tag->key, tag->value);
avformat_close_input(&fmt_ctx);
return 0;
}

/contrib/sdk/sources/ffmpeg/doc/examples/muxing.c
0,0 → 1,564
/*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* libavformat API example.
*
* Output a media file in any supported libavformat format.
* The default codecs are used.
* @example doc/examples/muxing.c
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <libavutil/opt.h>
#include <libavutil/mathematics.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libswresample/swresample.h>
/* 5 seconds stream duration */
#define STREAM_DURATION 200.0
#define STREAM_FRAME_RATE 25 /* 25 images/s */
#define STREAM_NB_FRAMES ((int)(STREAM_DURATION * STREAM_FRAME_RATE))
#define STREAM_PIX_FMT AV_PIX_FMT_YUV420P /* default pix_fmt */
static int sws_flags = SWS_BICUBIC;
/* Add an output stream. */
static AVStream *add_stream(AVFormatContext *oc, AVCodec **codec,
enum AVCodecID codec_id)
{
AVCodecContext *c;
AVStream *st;
/* find the encoder */
*codec = avcodec_find_encoder(codec_id);
if (!(*codec)) {
fprintf(stderr, "Could not find encoder for '%s'\n",
avcodec_get_name(codec_id));
exit(1);
}
st = avformat_new_stream(oc, *codec);
if (!st) {
fprintf(stderr, "Could not allocate stream\n");
exit(1);
}
st->id = oc->nb_streams-1;
c = st->codec;
switch ((*codec)->type) {
case AVMEDIA_TYPE_AUDIO:
c->sample_fmt = AV_SAMPLE_FMT_FLTP;
c->bit_rate = 64000;
c->sample_rate = 44100;
c->channels = 2;
break;
case AVMEDIA_TYPE_VIDEO:
c->codec_id = codec_id;
c->bit_rate = 400000;
/* Resolution must be a multiple of two. */
c->width = 352;
c->height = 288;
/* timebase: This is the fundamental unit of time (in seconds) in terms
* of which frame timestamps are represented. For fixed-fps content,
* timebase should be 1/framerate and timestamp increments should be
* identical to 1. */
c->time_base.den = STREAM_FRAME_RATE;
c->time_base.num = 1;
c->gop_size = 12; /* emit one intra frame every twelve frames at most */
c->pix_fmt = STREAM_PIX_FMT;
if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
/* just for testing, we also add B frames */
c->max_b_frames = 2;
}
if (c->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
/* Needed to avoid using macroblocks in which some coeffs overflow.
* This does not happen with normal video, it just happens here as
* the motion of the chroma plane does not match the luma plane. */
c->mb_decision = 2;
}
break;
default:
break;
}
/* Some formats want stream headers to be separate. */
if (oc->oformat->flags & AVFMT_GLOBALHEADER)
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
return st;
}
/**************************************************************/
/* audio output */
static float t, tincr, tincr2;
static uint8_t **src_samples_data;
static int src_samples_linesize;
static int src_nb_samples;
static int max_dst_nb_samples;
uint8_t **dst_samples_data;
int dst_samples_linesize;
int dst_samples_size;
struct SwrContext *swr_ctx = NULL;
static void open_audio(AVFormatContext *oc, AVCodec *codec, AVStream *st)
{
AVCodecContext *c;
int ret;
c = st->codec;
/* open it */
ret = avcodec_open2(c, codec, NULL);
if (ret < 0) {
fprintf(stderr, "Could not open audio codec: %s\n", av_err2str(ret));
exit(1);
}
/* init signal generator */
t = 0;
tincr = 2 * M_PI * 110.0 / c->sample_rate;
/* increment frequency by 110 Hz per second */
tincr2 = 2 * M_PI * 110.0 / c->sample_rate / c->sample_rate;
src_nb_samples = c->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE ?
10000 : c->frame_size;
ret = av_samples_alloc_array_and_samples(&src_samples_data, &src_samples_linesize, c->channels,
src_nb_samples, c->sample_fmt, 0);
if (ret < 0) {
fprintf(stderr, "Could not allocate source samples\n");
exit(1);
}
/* create resampler context */
if (c->sample_fmt != AV_SAMPLE_FMT_S16) {
swr_ctx = swr_alloc();
if (!swr_ctx) {
fprintf(stderr, "Could not allocate resampler context\n");
exit(1);
}
/* set options */
av_opt_set_int (swr_ctx, "in_channel_count", c->channels, 0);
av_opt_set_int (swr_ctx, "in_sample_rate", c->sample_rate, 0);
av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", AV_SAMPLE_FMT_S16, 0);
av_opt_set_int (swr_ctx, "out_channel_count", c->channels, 0);
av_opt_set_int (swr_ctx, "out_sample_rate", c->sample_rate, 0);
av_opt_set_sample_fmt(swr_ctx, "out_sample_fmt", c->sample_fmt, 0);
/* initialize the resampling context */
if ((ret = swr_init(swr_ctx)) < 0) {
fprintf(stderr, "Failed to initialize the resampling context\n");
exit(1);
}
}
/* compute the number of converted samples: buffering is avoided
* ensuring that the output buffer will contain at least all the
* converted input samples */
max_dst_nb_samples = src_nb_samples;
ret = av_samples_alloc_array_and_samples(&dst_samples_data, &dst_samples_linesize, c->channels,
max_dst_nb_samples, c->sample_fmt, 0);
if (ret < 0) {
fprintf(stderr, "Could not allocate destination samples\n");
exit(1);
}
dst_samples_size = av_samples_get_buffer_size(NULL, c->channels, max_dst_nb_samples,
c->sample_fmt, 0);
}
/* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
* 'nb_channels' channels. */
static void get_audio_frame(int16_t *samples, int frame_size, int nb_channels)
{
int j, i, v;
int16_t *q;
q = samples;
for (j = 0; j < frame_size; j++) {
v = (int)(sin(t) * 10000);
for (i = 0; i < nb_channels; i++)
*q++ = v;
t += tincr;
tincr += tincr2;
}
}
static void write_audio_frame(AVFormatContext *oc, AVStream *st)
{
AVCodecContext *c;
AVPacket pkt = { 0 }; // data and size must be 0;
AVFrame *frame = avcodec_alloc_frame();
int got_packet, ret, dst_nb_samples;
av_init_packet(&pkt);
c = st->codec;
get_audio_frame((int16_t *)src_samples_data[0], src_nb_samples, c->channels);
/* convert samples from native format to destination codec format, using the resampler */
if (swr_ctx) {
/* compute destination number of samples */
dst_nb_samples = av_rescale_rnd(swr_get_delay(swr_ctx, c->sample_rate) + src_nb_samples,
c->sample_rate, c->sample_rate, AV_ROUND_UP);
if (dst_nb_samples > max_dst_nb_samples) {
av_free(dst_samples_data[0]);
ret = av_samples_alloc(dst_samples_data, &dst_samples_linesize, c->channels,
dst_nb_samples, c->sample_fmt, 0);
if (ret < 0)
exit(1);
max_dst_nb_samples = dst_nb_samples;
dst_samples_size = av_samples_get_buffer_size(NULL, c->channels, dst_nb_samples,
c->sample_fmt, 0);
}
/* convert to destination format */
ret = swr_convert(swr_ctx,
dst_samples_data, dst_nb_samples,
(const uint8_t **)src_samples_data, src_nb_samples);
if (ret < 0) {
fprintf(stderr, "Error while converting\n");
exit(1);
}
} else {
dst_samples_data[0] = src_samples_data[0];
dst_nb_samples = src_nb_samples;
}
frame->nb_samples = dst_nb_samples;
avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
dst_samples_data[0], dst_samples_size, 0);
ret = avcodec_encode_audio2(c, &pkt, frame, &got_packet);
if (ret < 0) {
fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
exit(1);
}
if (!got_packet)
return;
pkt.stream_index = st->index;
/* Write the compressed frame to the media file. */
ret = av_interleaved_write_frame(oc, &pkt);
if (ret != 0) {
fprintf(stderr, "Error while writing audio frame: %s\n",
av_err2str(ret));
exit(1);
}
avcodec_free_frame(&frame);
}
static void close_audio(AVFormatContext *oc, AVStream *st)
{
avcodec_close(st->codec);
av_free(src_samples_data[0]);
av_free(dst_samples_data[0]);
}
/**************************************************************/
/* video output */
static AVFrame *frame;
static AVPicture src_picture, dst_picture;
static int frame_count;
static void open_video(AVFormatContext *oc, AVCodec *codec, AVStream *st)
{
int ret;
AVCodecContext *c = st->codec;
/* open the codec */
ret = avcodec_open2(c, codec, NULL);
if (ret < 0) {
fprintf(stderr, "Could not open video codec: %s\n", av_err2str(ret));
exit(1);
}
/* allocate and init a re-usable frame */
frame = avcodec_alloc_frame();
if (!frame) {
fprintf(stderr, "Could not allocate video frame\n");
exit(1);
}
/* Allocate the encoded raw picture. */
ret = avpicture_alloc(&dst_picture, c->pix_fmt, c->width, c->height);
if (ret < 0) {
fprintf(stderr, "Could not allocate picture: %s\n", av_err2str(ret));
exit(1);
}
/* If the output format is not YUV420P, then a temporary YUV420P
* picture is needed too. It is then converted to the required
* output format. */
if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
ret = avpicture_alloc(&src_picture, AV_PIX_FMT_YUV420P, c->width, c->height);
if (ret < 0) {
fprintf(stderr, "Could not allocate temporary picture: %s\n",
av_err2str(ret));
exit(1);
}
}
/* copy data and linesize picture pointers to frame */
*((AVPicture *)frame) = dst_picture;
}
/* Prepare a dummy image. */
static void fill_yuv_image(AVPicture *pict, int frame_index,
int width, int height)
{
int x, y, i;
i = frame_index;
/* Y */
for (y = 0; y < height; y++)
for (x = 0; x < width; x++)
pict->data[0][y * pict->linesize[0] + x] = x + y + i * 3;
/* Cb and Cr */
for (y = 0; y < height / 2; y++) {
for (x = 0; x < width / 2; x++) {
pict->data[1][y * pict->linesize[1] + x] = 128 + y + i * 2;
pict->data[2][y * pict->linesize[2] + x] = 64 + x + i * 5;
}
}
}
static void write_video_frame(AVFormatContext *oc, AVStream *st)
{
int ret;
static struct SwsContext *sws_ctx;
AVCodecContext *c = st->codec;
if (frame_count >= STREAM_NB_FRAMES) {
/* No more frames to compress. The codec has a latency of a few
* frames if using B-frames, so we get the last frames by
* passing the same picture again. */
} else {
if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
/* as we only generate a YUV420P picture, we must convert it
* to the codec pixel format if needed */
if (!sws_ctx) {
sws_ctx = sws_getContext(c->width, c->height, AV_PIX_FMT_YUV420P,
c->width, c->height, c->pix_fmt,
sws_flags, NULL, NULL, NULL);
if (!sws_ctx) {
fprintf(stderr,
"Could not initialize the conversion context\n");
exit(1);
}
}
fill_yuv_image(&src_picture, frame_count, c->width, c->height);
sws_scale(sws_ctx,
(const uint8_t * const *)src_picture.data, src_picture.linesize,
0, c->height, dst_picture.data, dst_picture.linesize);
} else {
fill_yuv_image(&dst_picture, frame_count, c->width, c->height);
}
}
if (oc->oformat->flags & AVFMT_RAWPICTURE) {
/* Raw video case - directly store the picture in the packet */
AVPacket pkt;
av_init_packet(&pkt);
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index = st->index;
pkt.data = dst_picture.data[0];
pkt.size = sizeof(AVPicture);
ret = av_interleaved_write_frame(oc, &pkt);
} else {
AVPacket pkt = { 0 };
int got_packet;
av_init_packet(&pkt);
/* encode the image */
ret = avcodec_encode_video2(c, &pkt, frame, &got_packet);
if (ret < 0) {
fprintf(stderr, "Error encoding video frame: %s\n", av_err2str(ret));
exit(1);
}
/* If size is zero, it means the image was buffered. */
if (!ret && got_packet && pkt.size) {
pkt.stream_index = st->index;
/* Write the compressed frame to the media file. */
ret = av_interleaved_write_frame(oc, &pkt);
} else {
ret = 0;
}
}
if (ret != 0) {
fprintf(stderr, "Error while writing video frame: %s\n", av_err2str(ret));
exit(1);
}
frame_count++;
}
static void close_video(AVFormatContext *oc, AVStream *st)
{
avcodec_close(st->codec);
av_free(src_picture.data[0]);
av_free(dst_picture.data[0]);
av_free(frame);
}
/**************************************************************/
/* media file output */
int main(int argc, char **argv)
{
const char *filename;
AVOutputFormat *fmt;
AVFormatContext *oc;
AVStream *audio_st, *video_st;
AVCodec *audio_codec, *video_codec;
double audio_time, video_time;
int ret;
/* Initialize libavcodec, and register all codecs and formats. */
av_register_all();
if (argc != 2) {
printf("usage: %s output_file\n"
"API example program to output a media file with libavformat.\n"
"This program generates a synthetic audio and video stream, encodes and\n"
"muxes them into a file named output_file.\n"
"The output format is automatically guessed according to the file extension.\n"
"Raw images can also be output by using '%%d' in the filename.\n"
"\n", argv[0]);
return 1;
}
filename = argv[1];
/* allocate the output media context */
avformat_alloc_output_context2(&oc, NULL, NULL, filename);
if (!oc) {
printf("Could not deduce output format from file extension: using MPEG.\n");
avformat_alloc_output_context2(&oc, NULL, "mpeg", filename);
}
if (!oc) {
return 1;
}
fmt = oc->oformat;
/* Add the audio and video streams using the default format codecs
* and initialize the codecs. */
video_st = NULL;
audio_st = NULL;
if (fmt->video_codec != AV_CODEC_ID_NONE) {
video_st = add_stream(oc, &video_codec, fmt->video_codec);
}
if (fmt->audio_codec != AV_CODEC_ID_NONE) {
audio_st = add_stream(oc, &audio_codec, fmt->audio_codec);
}
/* Now that all the parameters are set, we can open the audio and
* video codecs and allocate the necessary encode buffers. */
if (video_st)
open_video(oc, video_codec, video_st);
if (audio_st)
open_audio(oc, audio_codec, audio_st);
av_dump_format(oc, 0, filename, 1);
/* open the output file, if needed */
if (!(fmt->flags & AVFMT_NOFILE)) {
ret = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE);
if (ret < 0) {
fprintf(stderr, "Could not open '%s': %s\n", filename,
av_err2str(ret));
return 1;
}
}
/* Write the stream header, if any. */
ret = avformat_write_header(oc, NULL);
if (ret < 0) {
fprintf(stderr, "Error occurred when opening output file: %s\n",
av_err2str(ret));
return 1;
}
if (frame)
frame->pts = 0;
for (;;) {
/* Compute current audio and video time. */
audio_time = audio_st ? audio_st->pts.val * av_q2d(audio_st->time_base) : 0.0;
video_time = video_st ? video_st->pts.val * av_q2d(video_st->time_base) : 0.0;
if ((!audio_st || audio_time >= STREAM_DURATION) &&
(!video_st || video_time >= STREAM_DURATION))
break;
/* write interleaved audio and video frames */
if (!video_st || (video_st && audio_st && audio_time < video_time)) {
write_audio_frame(oc, audio_st);
} else {
write_video_frame(oc, video_st);
frame->pts += av_rescale_q(1, video_st->codec->time_base, video_st->time_base);
}
}
/* Write the trailer, if any. The trailer must be written before you
* close the CodecContexts open when you wrote the header; otherwise
* av_write_trailer() may try to use memory that was freed on
* av_codec_close(). */
av_write_trailer(oc);
/* Close each codec. */
if (video_st)
close_video(oc, video_st);
if (audio_st)
close_audio(oc, audio_st);
if (!(fmt->flags & AVFMT_NOFILE))
/* Close the output file. */
avio_close(oc->pb);
/* free the stream */
avformat_free_context(oc);
return 0;
}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libavcodec.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libavcodec
includedir=${pcfiledir}/../../..
Name: libavcodec
Description: FFmpeg codec library
Version: 55.39.101
Requires: libavutil = 52.48.101
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lavcodec
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libavdevice.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libavdevice
includedir=${pcfiledir}/../../..
Name: libavdevice
Description: FFmpeg device handling library
Version: 55.5.100
Requires: libavformat = 55.19.104
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lavdevice
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libavformat.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libavformat
includedir=${pcfiledir}/../../..
Name: libavformat
Description: FFmpeg container format library
Version: 55.19.104
Requires: libavcodec = 55.39.101
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lavformat
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libavutil.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libavutil
includedir=${pcfiledir}/../../..
Name: libavutil
Description: FFmpeg utility library
Version: 52.48.101
Requires:
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lavutil
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libswresample.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libswresample
includedir=${pcfiledir}/../../..
Name: libswresample
Description: FFmpeg audio resampling library
Version: 0.17.104
Requires: libavutil = 52.48.101
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lswresample
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/pc-uninstalled/libswscale.pc
0,0 → 1,12
prefix=
exec_prefix=
libdir=${pcfiledir}/../../../libswscale
includedir=${pcfiledir}/../../..
Name: libswscale
Description: FFmpeg image rescaling library
Version: 2.5.101
Requires: libavutil = 52.48.101
Conflicts:
Libs: -L${libdir} -Wl,-rpath,${libdir} -lswscale
Cflags: -I${includedir}

/contrib/sdk/sources/ffmpeg/doc/examples/resampling_audio.c
0,0 → 1,211
/*
* Copyright (c) 2012 Stefano Sabatini
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @example doc/examples/resampling_audio.c
* libswresample API use example.
*/
#include <libavutil/opt.h>
#include <libavutil/channel_layout.h>
#include <libavutil/samplefmt.h>
#include <libswresample/swresample.h>
static int get_format_from_sample_fmt(const char **fmt,
enum AVSampleFormat sample_fmt)
{
int i;
struct sample_fmt_entry {
enum AVSampleFormat sample_fmt; const char *fmt_be, *fmt_le;
} sample_fmt_entries[] = {
{ AV_SAMPLE_FMT_U8, "u8", "u8" },
{ AV_SAMPLE_FMT_S16, "s16be", "s16le" },
{ AV_SAMPLE_FMT_S32, "s32be", "s32le" },
{ AV_SAMPLE_FMT_FLT, "f32be", "f32le" },
{ AV_SAMPLE_FMT_DBL, "f64be", "f64le" },
};
*fmt = NULL;
for (i = 0; i < FF_ARRAY_ELEMS(sample_fmt_entries); i++) {
struct sample_fmt_entry *entry = &sample_fmt_entries[i];
if (sample_fmt == entry->sample_fmt) {
*fmt = AV_NE(entry->fmt_be, entry->fmt_le);
return 0;
}
}
fprintf(stderr,
"Sample format %s not supported as output format\n",
av_get_sample_fmt_name(sample_fmt));
return AVERROR(EINVAL);
}
/**
* Fill dst buffer with nb_samples, generated starting from t.
*/
void fill_samples(double *dst, int nb_samples, int nb_channels, int sample_rate, double *t)
{
int i, j;
double tincr = 1.0 / sample_rate, *dstp = dst;
const double c = 2 * M_PI * 440.0;
/* generate sin tone with 440Hz frequency and duplicated channels */
for (i = 0; i < nb_samples; i++) {
*dstp = sin(c * *t);
for (j = 1; j < nb_channels; j++)
dstp[j] = dstp[0];
dstp += nb_channels;
*t += tincr;
}
}
int main(int argc, char **argv)
{
int64_t src_ch_layout = AV_CH_LAYOUT_STEREO, dst_ch_layout = AV_CH_LAYOUT_SURROUND;
int src_rate = 48000, dst_rate = 44100;
uint8_t **src_data = NULL, **dst_data = NULL;
int src_nb_channels = 0, dst_nb_channels = 0;
int src_linesize, dst_linesize;
int src_nb_samples = 1024, dst_nb_samples, max_dst_nb_samples;
enum AVSampleFormat src_sample_fmt = AV_SAMPLE_FMT_DBL, dst_sample_fmt = AV_SAMPLE_FMT_S16;
const char *dst_filename = NULL;
FILE *dst_file;
int dst_bufsize;
const char *fmt;
struct SwrContext *swr_ctx;
double t;
int ret;
if (argc != 2) {
fprintf(stderr, "Usage: %s output_file\n"
"API example program to show how to resample an audio stream with libswresample.\n"
"This program generates a series of audio frames, resamples them to a specified "
"output format and rate and saves them to an output file named output_file.\n",
argv[0]);
exit(1);
}
dst_filename = argv[1];
dst_file = fopen(dst_filename, "wb");
if (!dst_file) {
fprintf(stderr, "Could not open destination file %s\n", dst_filename);
exit(1);
}
/* create resampler context */
swr_ctx = swr_alloc();
if (!swr_ctx) {
fprintf(stderr, "Could not allocate resampler context\n");
ret = AVERROR(ENOMEM);
goto end;
}
/* set options */
av_opt_set_int(swr_ctx, "in_channel_layout", src_ch_layout, 0);
av_opt_set_int(swr_ctx, "in_sample_rate", src_rate, 0);
av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", src_sample_fmt, 0);
av_opt_set_int(swr_ctx, "out_channel_layout", dst_ch_layout, 0);
av_opt_set_int(swr_ctx, "out_sample_rate", dst_rate, 0);
av_opt_set_sample_fmt(swr_ctx, "out_sample_fmt", dst_sample_fmt, 0);
/* initialize the resampling context */
if ((ret = swr_init(swr_ctx)) < 0) {
fprintf(stderr, "Failed to initialize the resampling context\n");
goto end;
}
/* allocate source and destination samples buffers */
src_nb_channels = av_get_channel_layout_nb_channels(src_ch_layout);
ret = av_samples_alloc_array_and_samples(&src_data, &src_linesize, src_nb_channels,
src_nb_samples, src_sample_fmt, 0);
if (ret < 0) {
fprintf(stderr, "Could not allocate source samples\n");
goto end;
}
/* compute the number of converted samples: buffering is avoided
* ensuring that the output buffer will contain at least all the
* converted input samples */
max_dst_nb_samples = dst_nb_samples =
av_rescale_rnd(src_nb_samples, dst_rate, src_rate, AV_ROUND_UP);
/* buffer is going to be directly written to a rawaudio file, no alignment */
dst_nb_channels = av_get_channel_layout_nb_channels(dst_ch_layout);
ret = av_samples_alloc_array_and_samples(&dst_data, &dst_linesize, dst_nb_channels,
dst_nb_samples, dst_sample_fmt, 0);
if (ret < 0) {
fprintf(stderr, "Could not allocate destination samples\n");
goto end;
}
t = 0;
do {
/* generate synthetic audio */
fill_samples((double *)src_data[0], src_nb_samples, src_nb_channels, src_rate, &t);
/* compute destination number of samples */
dst_nb_samples = av_rescale_rnd(swr_get_delay(swr_ctx, src_rate) +
src_nb_samples, dst_rate, src_rate, AV_ROUND_UP);
if (dst_nb_samples > max_dst_nb_samples) {
av_free(dst_data[0]);
ret = av_samples_alloc(dst_data, &dst_linesize, dst_nb_channels,
dst_nb_samples, dst_sample_fmt, 1);
if (ret < 0)
break;
max_dst_nb_samples = dst_nb_samples;
}
/* convert to destination format */
ret = swr_convert(swr_ctx, dst_data, dst_nb_samples, (const uint8_t **)src_data, src_nb_samples);
if (ret < 0) {
fprintf(stderr, "Error while converting\n");
goto end;
}
dst_bufsize = av_samples_get_buffer_size(&dst_linesize, dst_nb_channels,
ret, dst_sample_fmt, 1);
printf("t:%f in:%d out:%d\n", t, src_nb_samples, ret);
fwrite(dst_data[0], 1, dst_bufsize, dst_file);
} while (t < 10);
if ((ret = get_format_from_sample_fmt(&fmt, dst_sample_fmt)) < 0)
goto end;
fprintf(stderr, "Resampling succeeded. Play the output file with the command:\n"
"ffplay -f %s -channel_layout %"PRId64" -channels %d -ar %d %s\n",
fmt, dst_ch_layout, dst_nb_channels, dst_rate, dst_filename);
end:
if (dst_file)
fclose(dst_file);
if (src_data)
av_freep(&src_data[0]);
av_freep(&src_data);
if (dst_data)
av_freep(&dst_data[0]);
av_freep(&dst_data);
swr_free(&swr_ctx);
return ret < 0;
}

/contrib/sdk/sources/ffmpeg/doc/examples/scaling_video.c
0,0 → 1,141
/*
* Copyright (c) 2012 Stefano Sabatini
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* libswscale API use example.
* @example doc/examples/scaling_video.c
*/
#include <libavutil/imgutils.h>
#include <libavutil/parseutils.h>
#include <libswscale/swscale.h>
static void fill_yuv_image(uint8_t *data[4], int linesize[4],
int width, int height, int frame_index)
{
int x, y;
/* Y */
for (y = 0; y < height; y++)
for (x = 0; x < width; x++)
data[0][y * linesize[0] + x] = x + y + frame_index * 3;
/* Cb and Cr */
for (y = 0; y < height / 2; y++) {
for (x = 0; x < width / 2; x++) {
data[1][y * linesize[1] + x] = 128 + y + frame_index * 2;
data[2][y * linesize[2] + x] = 64 + x + frame_index * 5;
}
}
}
int main(int argc, char **argv)
{
uint8_t *src_data[4], *dst_data[4];
int src_linesize[4], dst_linesize[4];
int src_w = 320, src_h = 240, dst_w, dst_h;
enum AVPixelFormat src_pix_fmt = AV_PIX_FMT_YUV420P, dst_pix_fmt = AV_PIX_FMT_RGB24;
const char *dst_size = NULL;
const char *dst_filename = NULL;
FILE *dst_file;
int dst_bufsize;
struct SwsContext *sws_ctx;
int i, ret;
if (argc != 3) {
fprintf(stderr, "Usage: %s output_file output_size\n"
"API example program to show how to scale an image with libswscale.\n"
"This program generates a series of pictures, rescales them to the given "
"output_size and saves them to an output file named output_file\n."
"\n", argv[0]);
exit(1);
}
dst_filename = argv[1];
dst_size = argv[2];
if (av_parse_video_size(&dst_w, &dst_h, dst_size) < 0) {
fprintf(stderr,
"Invalid size '%s', must be in the form WxH or a valid size abbreviation\n",
dst_size);
exit(1);
}
dst_file = fopen(dst_filename, "wb");
if (!dst_file) {
fprintf(stderr, "Could not open destination file %s\n", dst_filename);
exit(1);
}
/* create scaling context */
sws_ctx = sws_getContext(src_w, src_h, src_pix_fmt,
dst_w, dst_h, dst_pix_fmt,
SWS_BILINEAR, NULL, NULL, NULL);
if (!sws_ctx) {
fprintf(stderr,
"Impossible to create scale context for the conversion "
"fmt:%s s:%dx%d -> fmt:%s s:%dx%d\n",
av_get_pix_fmt_name(src_pix_fmt), src_w, src_h,
av_get_pix_fmt_name(dst_pix_fmt), dst_w, dst_h);
ret = AVERROR(EINVAL);
goto end;
}
/* allocate source and destination image buffers */
if ((ret = av_image_alloc(src_data, src_linesize,
src_w, src_h, src_pix_fmt, 16)) < 0) {
fprintf(stderr, "Could not allocate source image\n");
goto end;
}
/* buffer is going to be written to rawvideo file, no alignment */
if ((ret = av_image_alloc(dst_data, dst_linesize,
dst_w, dst_h, dst_pix_fmt, 1)) < 0) {
fprintf(stderr, "Could not allocate destination image\n");
goto end;
}
dst_bufsize = ret;
for (i = 0; i < 100; i++) {
/* generate synthetic video */
fill_yuv_image(src_data, src_linesize, src_w, src_h, i);
/* convert to destination format */
sws_scale(sws_ctx, (const uint8_t * const*)src_data,
src_linesize, 0, src_h, dst_data, dst_linesize);
/* write scaled image to file */
fwrite(dst_data[0], 1, dst_bufsize, dst_file);
}
fprintf(stderr, "Scaling succeeded. Play the output file with the command:\n"
"ffplay -f rawvideo -pix_fmt %s -video_size %dx%d %s\n",
av_get_pix_fmt_name(dst_pix_fmt), dst_w, dst_h, dst_filename);
end:
if (dst_file)
fclose(dst_file);
av_freep(&src_data[0]);
av_freep(&dst_data[0]);
sws_freeContext(sws_ctx);
return ret < 0;
}

/contrib/sdk/sources/ffmpeg/doc/faq.texi
0,0 → 1,556
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg FAQ
@titlepage
@center @titlefont{FFmpeg FAQ}
@end titlepage
@top
@contents
@chapter General Questions
@section Why doesn't FFmpeg support feature [xyz]?
Because no one has taken on that task yet. FFmpeg development is
driven by the tasks that are important to the individual developers.
If there is a feature that is important to you, the best way to get
it implemented is to undertake the task yourself or sponsor a developer.
@section FFmpeg does not support codec XXX. Can you include a Windows DLL loader to support it?
No. Windows DLLs are not portable, bloated and often slow.
Moreover FFmpeg strives to support all codecs natively.
A DLL loader is not conducive to that goal.
@section I cannot read this file although this format seems to be supported by ffmpeg.
Even if ffmpeg can read the container format, it may not support all its
codecs. Please consult the supported codec list in the ffmpeg
documentation.
@section Which codecs are supported by Windows?
Windows does not support standard formats like MPEG very well, unless you
install some additional codecs.
The following list of video codecs should work on most Windows systems:
@table @option
@item msmpeg4v2
.avi/.asf
@item msmpeg4
.asf only
@item wmv1
.asf only
@item wmv2
.asf only
@item mpeg4
Only if you have some MPEG-4 codec like ffdshow or Xvid installed.
@item mpeg1video
.mpg only
@end table
Note, ASF files often have .wmv or .wma extensions in Windows. It should also
be mentioned that Microsoft claims a patent on the ASF format, and may sue
or threaten users who create ASF files with non-Microsoft software. It is
strongly advised to avoid ASF where possible.
The following list of audio codecs should work on most Windows systems:
@table @option
@item adpcm_ima_wav
@item adpcm_ms
@item pcm_s16le
always
@item libmp3lame
If some MP3 codec like LAME is installed.
@end table
@chapter Compilation
@section @code{error: can't find a register in class 'GENERAL_REGS' while reloading 'asm'}
This is a bug in gcc. Do not report it to us. Instead, please report it to
the gcc developers. Note that we will not add workarounds for gcc bugs.
Also note that (some of) the gcc developers believe this is not a bug or
not a bug they should fix:
@url{http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11203}.
Then again, some of them do not know the difference between an undecidable
problem and an NP-hard problem...
@section I have installed this library with my distro's package manager. Why does @command{configure} not see it?
Distributions usually split libraries in several packages. The main package
contains the files necessary to run programs using the library. The
development package contains the files necessary to build programs using the
library. Sometimes, docs and/or data are in a separate package too.
To build FFmpeg, you need to install the development package. It is usually
called @file{libfoo-dev} or @file{libfoo-devel}. You can remove it after the
build is finished, but be sure to keep the main package.
@chapter Usage
@section ffmpeg does not work; what is wrong?
Try a @code{make distclean} in the ffmpeg source directory before the build.
If this does not help see
(@url{http://ffmpeg.org/bugreports.html}).
@section How do I encode single pictures into movies?
First, rename your pictures to follow a numerical sequence.
For example, img1.jpg, img2.jpg, img3.jpg,...
Then you may run:
@example
ffmpeg -f image2 -i img%d.jpg /tmp/a.mpg
@end example
Notice that @samp{%d} is replaced by the image number.
@file{img%03d.jpg} means the sequence @file{img001.jpg}, @file{img002.jpg}, etc.
Use the @option{-start_number} option to declare a starting number for
the sequence. This is useful if your sequence does not start with
@file{img001.jpg} but is still in a numerical order. The following
example will start with @file{img100.jpg}:
@example
ffmpeg -f image2 -start_number 100 -i img%d.jpg /tmp/a.mpg
@end example
If you have large number of pictures to rename, you can use the
following command to ease the burden. The command, using the bourne
shell syntax, symbolically links all files in the current directory
that match @code{*jpg} to the @file{/tmp} directory in the sequence of
@file{img001.jpg}, @file{img002.jpg} and so on.
@example
x=1; for i in *jpg; do counter=$(printf %03d $x); ln -s "$i" /tmp/img"$counter".jpg; x=$(($x+1)); done
@end example
If you want to sequence them by oldest modified first, substitute
@code{$(ls -r -t *jpg)} in place of @code{*jpg}.
Then run:
@example
ffmpeg -f image2 -i /tmp/img%03d.jpg /tmp/a.mpg
@end example
The same logic is used for any image format that ffmpeg reads.
You can also use @command{cat} to pipe images to ffmpeg:
@example
cat *.jpg | ffmpeg -f image2pipe -c:v mjpeg -i - output.mpg
@end example
@section How do I encode movie to single pictures?
Use:
@example
ffmpeg -i movie.mpg movie%d.jpg
@end example
The @file{movie.mpg} used as input will be converted to
@file{movie1.jpg}, @file{movie2.jpg}, etc...
Instead of relying on file format self-recognition, you may also use
@table @option
@item -c:v ppm
@item -c:v png
@item -c:v mjpeg
@end table
to force the encoding.
Applying that to the previous example:
@example
ffmpeg -i movie.mpg -f image2 -c:v mjpeg menu%d.jpg
@end example
Beware that there is no "jpeg" codec. Use "mjpeg" instead.
@section Why do I see a slight quality degradation with multithreaded MPEG* encoding?
For multithreaded MPEG* encoding, the encoded slices must be independent,
otherwise thread n would practically have to wait for n-1 to finish, so it's
quite logical that there is a small reduction of quality. This is not a bug.
@section How can I read from the standard input or write to the standard output?
Use @file{-} as file name.
@section -f jpeg doesn't work.
Try '-f image2 test%d.jpg'.
@section Why can I not change the frame rate?
Some codecs, like MPEG-1/2, only allow a small number of fixed frame rates.
Choose a different codec with the -c:v command line option.
@section How do I encode Xvid or DivX video with ffmpeg?
Both Xvid and DivX (version 4+) are implementations of the ISO MPEG-4
standard (note that there are many other coding formats that use this
same standard). Thus, use '-c:v mpeg4' to encode in these formats. The
default fourcc stored in an MPEG-4-coded file will be 'FMP4'. If you want
a different fourcc, use the '-vtag' option. E.g., '-vtag xvid' will
force the fourcc 'xvid' to be stored as the video fourcc rather than the
default.
@section Which are good parameters for encoding high quality MPEG-4?
'-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2',
things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd'.
@section Which are good parameters for encoding high quality MPEG-1/MPEG-2?
'-mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 100 -pass 1/2'
but beware the '-g 100' might cause problems with some decoders.
Things to try: '-bf 2', '-flags qprd', '-flags mv0', '-flags skiprd.
@section Interlaced video looks very bad when encoded with ffmpeg, what is wrong?
You should use '-flags +ilme+ildct' and maybe '-flags +alt' for interlaced
material, and try '-top 0/1' if the result looks really messed-up.
@section How can I read DirectShow files?
If you have built FFmpeg with @code{./configure --enable-avisynth}
(only possible on MinGW/Cygwin platforms),
then you may use any file that DirectShow can read as input.
Just create an "input.avs" text file with this single line ...
@example
DirectShowSource("C:\path to your file\yourfile.asf")
@end example
... and then feed that text file to ffmpeg:
@example
ffmpeg -i input.avs
@end example
For ANY other help on AviSynth, please visit the
@uref{http://www.avisynth.org/, AviSynth homepage}.
@section How can I join video files?
To "join" video files is quite ambiguous. The following list explains the
different kinds of "joining" and points out how those are addressed in
FFmpeg. To join video files may mean:
@itemize
@item
To put them one after the other: this is called to @emph{concatenate} them
(in short: concat) and is addressed
@ref{How can I concatenate video files, in this very faq}.
@item
To put them together in the same file, to let the user choose between the
different versions (example: different audio languages): this is called to
@emph{multiplex} them together (in short: mux), and is done by simply
invoking ffmpeg with several @option{-i} options.
@item
For audio, to put all channels together in a single stream (example: two
mono streams into one stereo stream): this is sometimes called to
@emph{merge} them, and can be done using the
@url{http://ffmpeg.org/ffmpeg-filters.html#amerge, @code{amerge}} filter.
@item
For audio, to play one on top of the other: this is called to @emph{mix}
them, and can be done by first merging them into a single stream and then
using the @url{http://ffmpeg.org/ffmpeg-filters.html#pan, @code{pan}} filter to mix
the channels at will.
@item
For video, to display both together, side by side or one on top of a part of
the other; it can be done using the
@url{http://ffmpeg.org/ffmpeg-filters.html#overlay, @code{overlay}} video filter.
@end itemize
@anchor{How can I concatenate video files}
@section How can I concatenate video files?
There are several solutions, depending on the exact circumstances.
@subsection Concatenating using the concat @emph{filter}
FFmpeg has a @url{http://ffmpeg.org/ffmpeg-filters.html#concat,
@code{concat}} filter designed specifically for that, with examples in the
documentation. This operation is recommended if you need to re-encode.
@subsection Concatenating using the concat @emph{demuxer}
FFmpeg has a @url{http://www.ffmpeg.org/ffmpeg-formats.html#concat,
@code{concat}} demuxer which you can use when you want to avoid a re-encode and
your format doesn't support file level concatenation.
@subsection Concatenating using the concat @emph{protocol} (file level)
FFmpeg has a @url{http://ffmpeg.org/ffmpeg-protocols.html#concat,
@code{concat}} protocol designed specifically for that, with examples in the
documentation.
A few multimedia containers (MPEG-1, MPEG-2 PS, DV) allow to concatenate
video by merely concatenating the files containing them.
Hence you may concatenate your multimedia files by first transcoding them to
these privileged formats, then using the humble @code{cat} command (or the
equally humble @code{copy} under Windows), and finally transcoding back to your
format of choice.
@example
ffmpeg -i input1.avi -qscale:v 1 intermediate1.mpg
ffmpeg -i input2.avi -qscale:v 1 intermediate2.mpg
cat intermediate1.mpg intermediate2.mpg > intermediate_all.mpg
ffmpeg -i intermediate_all.mpg -qscale:v 2 output.avi
@end example
Additionally, you can use the @code{concat} protocol instead of @code{cat} or
@code{copy} which will avoid creation of a potentially huge intermediate file.
@example
ffmpeg -i input1.avi -qscale:v 1 intermediate1.mpg
ffmpeg -i input2.avi -qscale:v 1 intermediate2.mpg
ffmpeg -i concat:"intermediate1.mpg|intermediate2.mpg" -c copy intermediate_all.mpg
ffmpeg -i intermediate_all.mpg -qscale:v 2 output.avi
@end example
Note that you may need to escape the character "|" which is special for many
shells.
Another option is usage of named pipes, should your platform support it:
@example
mkfifo intermediate1.mpg
mkfifo intermediate2.mpg
ffmpeg -i input1.avi -qscale:v 1 -y intermediate1.mpg < /dev/null &
ffmpeg -i input2.avi -qscale:v 1 -y intermediate2.mpg < /dev/null &
cat intermediate1.mpg intermediate2.mpg |\
ffmpeg -f mpeg -i - -c:v mpeg4 -acodec libmp3lame output.avi
@end example
@subsection Concatenating using raw audio and video
Similarly, the yuv4mpegpipe format, and the raw video, raw audio codecs also
allow concatenation, and the transcoding step is almost lossless.
When using multiple yuv4mpegpipe(s), the first line needs to be discarded
from all but the first stream. This can be accomplished by piping through
@code{tail} as seen below. Note that when piping through @code{tail} you
must use command grouping, @code{@{ ;@}}, to background properly.
For example, let's say we want to concatenate two FLV files into an
output.flv file:
@example
mkfifo temp1.a
mkfifo temp1.v
mkfifo temp2.a
mkfifo temp2.v
mkfifo all.a
mkfifo all.v
ffmpeg -i input1.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp1.a < /dev/null &
ffmpeg -i input2.flv -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 - > temp2.a < /dev/null &
ffmpeg -i input1.flv -an -f yuv4mpegpipe - > temp1.v < /dev/null &
@{ ffmpeg -i input2.flv -an -f yuv4mpegpipe - < /dev/null | tail -n +2 > temp2.v ; @} &
cat temp1.a temp2.a > all.a &
cat temp1.v temp2.v > all.v &
ffmpeg -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \
-f yuv4mpegpipe -i all.v \
-y output.flv
rm temp[12].[av] all.[av]
@end example
@section -profile option fails when encoding H.264 video with AAC audio
@command{ffmpeg} prints an error like
@example
Undefined constant or missing '(' in 'baseline'
Unable to parse option value "baseline"
Error setting option profile to value baseline.
@end example
Short answer: write @option{-profile:v} instead of @option{-profile}.
Long answer: this happens because the @option{-profile} option can apply to both
video and audio. Specifically the AAC encoder also defines some profiles, none
of which are named @var{baseline}.
The solution is to apply the @option{-profile} option to the video stream only
by using @url{http://ffmpeg.org/ffmpeg.html#Stream-specifiers-1, Stream specifiers}.
Appending @code{:v} to it will do exactly that.
@section Using @option{-f lavfi}, audio becomes mono for no apparent reason.
Use @option{-dumpgraph -} to find out exactly where the channel layout is
lost.
Most likely, it is through @code{auto-inserted aresample}. Try to understand
why the converting filter was needed at that place.
Just before the output is a likely place, as @option{-f lavfi} currently
only support packed S16.
Then insert the correct @code{aformat} explicitly in the filtergraph,
specifying the exact format.
@example
aformat=sample_fmts=s16:channel_layouts=stereo
@end example
@section Why does FFmpeg not see the subtitles in my VOB file?
VOB and a few other formats do not have a global header that describes
everything present in the file. Instead, applications are supposed to scan
the file to see what it contains. Since VOB files are frequently large, only
the beginning is scanned. If the subtitles happen only later in the file,
they will not be initally detected.
Some applications, including the @code{ffmpeg} command-line tool, can only
work with streams that were detected during the initial scan; streams that
are detected later are ignored.
The size of the initial scan is controlled by two options: @code{probesize}
(default ~5 Mo) and @code{analyzeduration} (default 5,000,000 µs = 5 s). For
the subtitle stream to be detected, both values must be large enough.
@section Why was the @command{ffmpeg} @option{-sameq} option removed? What to use instead?
The @option{-sameq} option meant "same quantizer", and made sense only in a
very limited set of cases. Unfortunately, a lot of people mistook it for
"same quality" and used it in places where it did not make sense: it had
roughly the expected visible effect, but achieved it in a very inefficient
way.
Each encoder has its own set of options to set the quality-vs-size balance,
use the options for the encoder you are using to set the quality level to a
point acceptable for your tastes. The most common options to do that are
@option{-qscale} and @option{-qmax}, but you should peruse the documentation
of the encoder you chose.
@chapter Development
@section Are there examples illustrating how to use the FFmpeg libraries, particularly libavcodec and libavformat?
Yes. Check the @file{doc/examples} directory in the source
repository, also available online at:
@url{https://github.com/FFmpeg/FFmpeg/tree/master/doc/examples}.
Examples are also installed by default, usually in
@code{$PREFIX/share/ffmpeg/examples}.
Also you may read the Developers Guide of the FFmpeg documentation. Alternatively,
examine the source code for one of the many open source projects that
already incorporate FFmpeg at (@url{projects.html}).
@section Can you support my C compiler XXX?
It depends. If your compiler is C99-compliant, then patches to support
it are likely to be welcome if they do not pollute the source code
with @code{#ifdef}s related to the compiler.
@section Is Microsoft Visual C++ supported?
Yes. Please see the @uref{platform.html, Microsoft Visual C++}
section in the FFmpeg documentation.
@section Can you add automake, libtool or autoconf support?
No. These tools are too bloated and they complicate the build.
@section Why not rewrite FFmpeg in object-oriented C++?
FFmpeg is already organized in a highly modular manner and does not need to
be rewritten in a formal object language. Further, many of the developers
favor straight C; it works for them. For more arguments on this matter,
read @uref{http://www.tux.org/lkml/#s15, "Programming Religion"}.
@section Why are the ffmpeg programs devoid of debugging symbols?
The build process creates @command{ffmpeg_g}, @command{ffplay_g}, etc. which
contain full debug information. Those binaries are stripped to create
@command{ffmpeg}, @command{ffplay}, etc. If you need the debug information, use
the *_g versions.
@section I do not like the LGPL, can I contribute code under the GPL instead?
Yes, as long as the code is optional and can easily and cleanly be placed
under #if CONFIG_GPL without breaking anything. So, for example, a new codec
or filter would be OK under GPL while a bug fix to LGPL code would not.
@section I'm using FFmpeg from within my C application but the linker complains about missing symbols from the libraries themselves.
FFmpeg builds static libraries by default. In static libraries, dependencies
are not handled. That has two consequences. First, you must specify the
libraries in dependency order: @code{-lavdevice} must come before
@code{-lavformat}, @code{-lavutil} must come after everything else, etc.
Second, external libraries that are used in FFmpeg have to be specified too.
An easy way to get the full list of required libraries in dependency order
is to use @code{pkg-config}.
@example
c99 -o program program.c $(pkg-config --cflags --libs libavformat libavcodec)
@end example
See @file{doc/example/Makefile} and @file{doc/example/pc-uninstalled} for
more details.
@section I'm using FFmpeg from within my C++ application but the linker complains about missing symbols which seem to be available.
FFmpeg is a pure C project, so to use the libraries within your C++ application
you need to explicitly state that you are using a C library. You can do this by
encompassing your FFmpeg includes using @code{extern "C"}.
See @url{http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html#faq-32.3}
@section I'm using libavutil from within my C++ application but the compiler complains about 'UINT64_C' was not declared in this scope
FFmpeg is a pure C project using C99 math features, in order to enable C++
to use them you have to append -D__STDC_CONSTANT_MACROS to your CXXFLAGS
@section I have a file in memory / a API different from *open/*read/ libc how do I use it with libavformat?
You have to create a custom AVIOContext using @code{avio_alloc_context},
see @file{libavformat/aviobuf.c} in FFmpeg and @file{libmpdemux/demux_lavf.c} in MPlayer or MPlayer2 sources.
@section Where is the documentation about ffv1, msmpeg4, asv1, 4xm?
see @url{http://www.ffmpeg.org/~michael/}
@section How do I feed H.263-RTP (and other codecs in RTP) to libavcodec?
Even if peculiar since it is network oriented, RTP is a container like any
other. You have to @emph{demux} RTP before feeding the payload to libavcodec.
In this specific case please look at RFC 4629 to see how it should be done.
@section AVStream.r_frame_rate is wrong, it is much larger than the frame rate.
@code{r_frame_rate} is NOT the average frame rate, it is the smallest frame rate
that can accurately represent all timestamps. So no, it is not
wrong if it is larger than the average!
For example, if you have mixed 25 and 30 fps content, then @code{r_frame_rate}
will be 150 (it is the least common multiple).
If you are looking for the average frame rate, see @code{AVStream.avg_frame_rate}.
@section Why is @code{make fate} not running all tests?
Make sure you have the fate-suite samples and the @code{SAMPLES} Make variable
or @code{FATE_SAMPLES} environment variable or the @code{--samples}
@command{configure} option is set to the right path.
@section Why is @code{make fate} not finding the samples?
Do you happen to have a @code{~} character in the samples path to indicate a
home directory? The value is used in ways where the shell cannot expand it,
causing FATE to not find files. Just replace @code{~} by the full path.
@bye

/contrib/sdk/sources/ffmpeg/doc/fate.texi
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\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Automated Testing Environment
@titlepage
@center @titlefont{FFmpeg Automated Testing Environment}
@end titlepage
@node Top
@top
@contents
@chapter Introduction
FATE is an extended regression suite on the client-side and a means
for results aggregation and presentation on the server-side.
The first part of this document explains how you can use FATE from
your FFmpeg source directory to test your ffmpeg binary. The second
part describes how you can run FATE to submit the results to FFmpeg's
FATE server.
In any way you can have a look at the publicly viewable FATE results
by visiting this website:
@url{http://fate.ffmpeg.org/}
This is especially recommended for all people contributing source
code to FFmpeg, as it can be seen if some test on some platform broke
with their recent contribution. This usually happens on the platforms
the developers could not test on.
The second part of this document describes how you can run FATE to
submit your results to FFmpeg's FATE server. If you want to submit your
results be sure to check that your combination of CPU, OS and compiler
is not already listed on the above mentioned website.
In the third part you can find a comprehensive listing of FATE makefile
targets and variables.
@chapter Using FATE from your FFmpeg source directory
If you want to run FATE on your machine you need to have the samples
in place. You can get the samples via the build target fate-rsync.
Use this command from the top-level source directory:
@example
make fate-rsync SAMPLES=fate-suite/
make fate SAMPLES=fate-suite/
@end example
The above commands set the samples location by passing a makefile
variable via command line. It is also possible to set the samples
location at source configuration time by invoking configure with
`--samples=<path to the samples directory>'. Afterwards you can
invoke the makefile targets without setting the SAMPLES makefile
variable. This is illustrated by the following commands:
@example
./configure --samples=fate-suite/
make fate-rsync
make fate
@end example
Yet another way to tell FATE about the location of the sample
directory is by making sure the environment variable FATE_SAMPLES
contains the path to your samples directory. This can be achieved
by e.g. putting that variable in your shell profile or by setting
it in your interactive session.
@example
FATE_SAMPLES=fate-suite/ make fate
@end example
@float NOTE
Do not put a '~' character in the samples path to indicate a home
directory. Because of shell nuances, this will cause FATE to fail.
@end float
To use a custom wrapper to run the test, pass @option{--target-exec} to
@command{configure} or set the @var{TARGET_EXEC} Make variable.
@chapter Submitting the results to the FFmpeg result aggregation server
To submit your results to the server you should run fate through the
shell script @file{tests/fate.sh} from the FFmpeg sources. This script needs
to be invoked with a configuration file as its first argument.
@example
tests/fate.sh /path/to/fate_config
@end example
A configuration file template with comments describing the individual
configuration variables can be found at @file{doc/fate_config.sh.template}.
@ifhtml
The mentioned configuration template is also available here:
@verbatiminclude fate_config.sh.template
@end ifhtml
Create a configuration that suits your needs, based on the configuration
template. The `slot' configuration variable can be any string that is not
yet used, but it is suggested that you name it adhering to the following
pattern <arch>-<os>-<compiler>-<compiler version>. The configuration file
itself will be sourced in a shell script, therefore all shell features may
be used. This enables you to setup the environment as you need it for your
build.
For your first test runs the `fate_recv' variable should be empty or
commented out. This will run everything as normal except that it will omit
the submission of the results to the server. The following files should be
present in $workdir as specified in the configuration file:
@itemize
@item configure.log
@item compile.log
@item test.log
@item report
@item version
@end itemize
When you have everything working properly you can create an SSH key pair
and send the public key to the FATE server administrator who can be contacted
at the email address @email{fate-admin@@ffmpeg.org}.
Configure your SSH client to use public key authentication with that key
when connecting to the FATE server. Also do not forget to check the identity
of the server and to accept its host key. This can usually be achieved by
running your SSH client manually and killing it after you accepted the key.
The FATE server's fingerprint is:
@table @option
@item RSA
d3:f1:83:97:a4:75:2b:a6:fb:d6:e8:aa:81:93:97:51
@item ECDSA
76:9f:68:32:04:1e:d5:d4:ec:47:3f:dc:fc:18:17:86
@end table
If you have problems connecting to the FATE server, it may help to try out
the @command{ssh} command with one or more @option{-v} options. You should
get detailed output concerning your SSH configuration and the authentication
process.
The only thing left is to automate the execution of the fate.sh script and
the synchronisation of the samples directory.
@chapter FATE makefile targets and variables
@section Makefile targets
@table @option
@item fate-rsync
Download/synchronize sample files to the configured samples directory.
@item fate-list
Will list all fate/regression test targets.
@item fate
Run the FATE test suite (requires the fate-suite dataset).
@end table
@section Makefile variables
@table @option
@item V
Verbosity level, can be set to 0, 1 or 2.
@itemize
@item 0: show just the test arguments
@item 1: show just the command used in the test
@item 2: show everything
@end itemize
@item SAMPLES
Specify or override the path to the FATE samples at make time, it has a
meaning only while running the regression tests.
@item THREADS
Specify how many threads to use while running regression tests, it is
quite useful to detect thread-related regressions.
@item THREAD_TYPE
Specify which threading strategy test, either @var{slice} or @var{frame},
by default @var{slice+frame}
@item CPUFLAGS
Specify CPU flags.
@item TARGET_EXEC
Specify or override the wrapper used to run the tests.
The @var{TARGET_EXEC} option provides a way to run FATE wrapped in
@command{valgrind}, @command{qemu-user} or @command{wine} or on remote targets
through @command{ssh}.
@item GEN
Set to @var{1} to generate the missing or mismatched references.
@end table
@section Examples
@example
make V=1 SAMPLES=/var/fate/samples THREADS=2 CPUFLAGS=mmx fate
@end example

/contrib/sdk/sources/ffmpeg/doc/fate.txt
0,0 → 1,197
FFmpeg Automated Testing Environment
************************************
Table of Contents
*****************
FFmpeg Automated Testing Environment
1 Introduction
2 Using FATE from your FFmpeg source directory
3 Submitting the results to the FFmpeg result aggregation server
4 FATE makefile targets and variables
4.1 Makefile targets
4.2 Makefile variables
4.3 Examples
1 Introduction
**************
FATE is an extended regression suite on the client-side and a means for
results aggregation and presentation on the server-side.
The first part of this document explains how you can use FATE from
your FFmpeg source directory to test your ffmpeg binary. The second
part describes how you can run FATE to submit the results to FFmpeg's
FATE server.
In any way you can have a look at the publicly viewable FATE results
by visiting this website:
`http://fate.ffmpeg.org/'
This is especially recommended for all people contributing source
code to FFmpeg, as it can be seen if some test on some platform broke
with their recent contribution. This usually happens on the platforms
the developers could not test on.
The second part of this document describes how you can run FATE to
submit your results to FFmpeg's FATE server. If you want to submit your
results be sure to check that your combination of CPU, OS and compiler
is not already listed on the above mentioned website.
In the third part you can find a comprehensive listing of FATE
makefile targets and variables.
2 Using FATE from your FFmpeg source directory
**********************************************
If you want to run FATE on your machine you need to have the samples in
place. You can get the samples via the build target fate-rsync. Use
this command from the top-level source directory:
make fate-rsync SAMPLES=fate-suite/
make fate SAMPLES=fate-suite/
The above commands set the samples location by passing a makefile
variable via command line. It is also possible to set the samples
location at source configuration time by invoking configure with
`-samples=<path to the samples directory>'. Afterwards you can invoke
the makefile targets without setting the SAMPLES makefile variable.
This is illustrated by the following commands:
./configure --samples=fate-suite/
make fate-rsync
make fate
Yet another way to tell FATE about the location of the sample
directory is by making sure the environment variable FATE_SAMPLES
contains the path to your samples directory. This can be achieved by
e.g. putting that variable in your shell profile or by setting it in
your interactive session.
FATE_SAMPLES=fate-suite/ make fate
Do not put a '~' character in the samples path to indicate a home
directory. Because of shell nuances, this will cause FATE to fail.
NOTE
To use a custom wrapper to run the test, pass `--target-exec' to
`configure' or set the TARGET_EXEC Make variable.
3 Submitting the results to the FFmpeg result aggregation server
****************************************************************
To submit your results to the server you should run fate through the
shell script `tests/fate.sh' from the FFmpeg sources. This script needs
to be invoked with a configuration file as its first argument.
tests/fate.sh /path/to/fate_config
A configuration file template with comments describing the individual
configuration variables can be found at `doc/fate_config.sh.template'.
Create a configuration that suits your needs, based on the
configuration template. The `slot' configuration variable can be any
string that is not yet used, but it is suggested that you name it
adhering to the following pattern <arch>-<os>-<compiler>-<compiler
version>. The configuration file itself will be sourced in a shell
script, therefore all shell features may be used. This enables you to
setup the environment as you need it for your build.
For your first test runs the `fate_recv' variable should be empty or
commented out. This will run everything as normal except that it will
omit the submission of the results to the server. The following files
should be present in $workdir as specified in the configuration file:
* configure.log
* compile.log
* test.log
* report
* version
When you have everything working properly you can create an SSH key
pair and send the public key to the FATE server administrator who can
be contacted at the email address <fate-admin@ffmpeg.org>.
Configure your SSH client to use public key authentication with that
key when connecting to the FATE server. Also do not forget to check the
identity of the server and to accept its host key. This can usually be
achieved by running your SSH client manually and killing it after you
accepted the key. The FATE server's fingerprint is:
`RSA'
d3:f1:83:97:a4:75:2b:a6:fb:d6:e8:aa:81:93:97:51
`ECDSA'
76:9f:68:32:04:1e:d5:d4:ec:47:3f:dc:fc:18:17:86
If you have problems connecting to the FATE server, it may help to
try out the `ssh' command with one or more `-v' options. You should get
detailed output concerning your SSH configuration and the authentication
process.
The only thing left is to automate the execution of the fate.sh
script and the synchronisation of the samples directory.
4 FATE makefile targets and variables
*************************************
4.1 Makefile targets
====================
`fate-rsync'
Download/synchronize sample files to the configured samples
directory.
`fate-list'
Will list all fate/regression test targets.
`fate'
Run the FATE test suite (requires the fate-suite dataset).
4.2 Makefile variables
======================
`V'
Verbosity level, can be set to 0, 1 or 2.
* 0: show just the test arguments
* 1: show just the command used in the test
* 2: show everything
`SAMPLES'
Specify or override the path to the FATE samples at make time, it
has a meaning only while running the regression tests.
`THREADS'
Specify how many threads to use while running regression tests, it
is quite useful to detect thread-related regressions.
`THREAD_TYPE'
Specify which threading strategy test, either SLICE or FRAME, by
default SLICE+FRAME
`CPUFLAGS'
Specify CPU flags.
`TARGET_EXEC'
Specify or override the wrapper used to run the tests. The
TARGET_EXEC option provides a way to run FATE wrapped in
`valgrind', `qemu-user' or `wine' or on remote targets through
`ssh'.
`GEN'
Set to 1 to generate the missing or mismatched references.
4.3 Examples
============
make V=1 SAMPLES=/var/fate/samples THREADS=2 CPUFLAGS=mmx fate

/contrib/sdk/sources/ffmpeg/doc/fate_config.sh.template
0,0 → 1,29
slot= # some unique identifier
repo=git://source.ffmpeg.org/ffmpeg.git # the source repository
samples= # path to samples directory
workdir= # directory in which to do all the work
#fate_recv="ssh -T fate@fate.ffmpeg.org" # command to submit report
comment= # optional description
build_only= # set to "yes" for a compile-only instance that skips tests
# the following are optional and map to configure options
arch=
cpu=
cross_prefix=
as=
cc=
ld=
target_os=
sysroot=
target_exec=
target_path=
target_samples=
extra_cflags=
extra_ldflags=
extra_libs=
extra_conf= # extra configure options not covered above
#make= # name of GNU make if not 'make'
makeopts= # extra options passed to 'make'
#tar= # command to create a tar archive from its arguments on stdout,
# defaults to 'tar c'

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-bitstream-filters.pod
0,0 → 1,200
=head1 NAME
ffmpeg-bitstream-filters - FFmpeg bitstream filters
=head1 DESCRIPTION
This document describes the bitstream filters provided by the
libavcodec library.
A bitstream filter operates on the encoded stream data, and performs
bitstream level modifications without performing decoding.
=head1 BITSTREAM FILTERS
When you configure your FFmpeg build, all the supported bitstream
filters are enabled by default. You can list all available ones using
the configure option C<--list-bsfs>.
You can disable all the bitstream filters using the configure option
C<--disable-bsfs>, and selectively enable any bitstream filter using
the option C<--enable-bsf=BSF>, or you can disable a particular
bitstream filter using the option C<--disable-bsf=BSF>.
The option C<-bsfs> of the ff* tools will display the list of
all the supported bitstream filters included in your build.
Below is a description of the currently available bitstream filters.
=head2 aac_adtstoasc
Convert MPEG-2/4 AAC ADTS to MPEG-4 Audio Specific Configuration
bitstream filter.
This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
ADTS header and removes the ADTS header.
This is required for example when copying an AAC stream from a raw
ADTS AAC container to a FLV or a MOV/MP4 file.
=head2 chomp
Remove zero padding at the end of a packet.
=head2 dump_extra
Add extradata to the beginning of the filtered packets.
The additional argument specifies which packets should be filtered.
It accepts the values:
=over 4
=item B<a>
add extradata to all key packets, but only if I<local_header> is
set in the B<flags2> codec context field
=item B<k>
add extradata to all key packets
=item B<e>
add extradata to all packets
=back
If not specified it is assumed B<k>.
For example the following B<ffmpeg> command forces a global
header (thus disabling individual packet headers) in the H.264 packets
generated by the C<libx264> encoder, but corrects them by adding
the header stored in extradata to the key packets:
ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
=head2 h264_mp4toannexb
Convert an H.264 bitstream from length prefixed mode to start code
prefixed mode (as defined in the Annex B of the ITU-T H.264
specification).
This is required by some streaming formats, typically the MPEG-2
transport stream format ("mpegts").
For example to remux an MP4 file containing an H.264 stream to mpegts
format with B<ffmpeg>, you can use the command:
ffmpeg -i INPUT.mp4 -codec copy -bsf:v h264_mp4toannexb OUTPUT.ts
=head2 imx_dump_header
=head2 mjpeg2jpeg
Convert MJPEG/AVI1 packets to full JPEG/JFIF packets.
MJPEG is a video codec wherein each video frame is essentially a
JPEG image. The individual frames can be extracted without loss,
e.g. by
ffmpeg -i ../some_mjpeg.avi -c:v copy frames_%d.jpg
Unfortunately, these chunks are incomplete JPEG images, because
they lack the DHT segment required for decoding. Quoting from
E<lt>B<http://www.digitalpreservation.gov/formats/fdd/fdd000063.shtml>E<gt>:
Avery Lee, writing in the rec.video.desktop newsgroup in 2001,
commented that "MJPEG, or at least the MJPEG in AVIs having the
MJPG fourcc, is restricted JPEG with a fixed -- and *omitted* --
Huffman table. The JPEG must be YCbCr colorspace, it must be 4:2:2,
and it must use basic Huffman encoding, not arithmetic or
progressive. . . . You can indeed extract the MJPEG frames and
decode them with a regular JPEG decoder, but you have to prepend
the DHT segment to them, or else the decoder won't have any idea
how to decompress the data. The exact table necessary is given in
the OpenDML spec."
This bitstream filter patches the header of frames extracted from an MJPEG
stream (carrying the AVI1 header ID and lacking a DHT segment) to
produce fully qualified JPEG images.
ffmpeg -i mjpeg-movie.avi -c:v copy -bsf:v mjpeg2jpeg frame_%d.jpg
exiftran -i -9 frame*.jpg
ffmpeg -i frame_%d.jpg -c:v copy rotated.avi
=head2 mjpega_dump_header
=head2 movsub
=head2 mp3_header_compress
=head2 mp3_header_decompress
=head2 noise
=head2 remove_extra
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-bitstream-filters.texi
0,0 → 1,45
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Bitstream Filters Documentation
@titlepage
@center @titlefont{FFmpeg Bitstream Filters Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes the bitstream filters provided by the
libavcodec library.
A bitstream filter operates on the encoded stream data, and performs
bitstream level modifications without performing decoding.
@c man end DESCRIPTION
@include bitstream_filters.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavcodec.html,libavcodec}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-bitstream-filters
@settitle FFmpeg bitstream filters
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-codecs.pod
0,0 → 1,5074
=head1 NAME
ffmpeg-codecs - FFmpeg codecs
=head1 DESCRIPTION
This document describes the codecs (decoders and encoders) provided by
the libavcodec library.
=head1 CODEC OPTIONS
libavcodec provides some generic global options, which can be set on
all the encoders and decoders. In addition each codec may support
so-called private options, which are specific for a given codec.
Sometimes, a global option may only affect a specific kind of codec,
and may be unsensical or ignored by another, so you need to be aware
of the meaning of the specified options. Also some options are
meant only for decoding or encoding.
Options may be set by specifying -I<option> I<value> in the
FFmpeg tools, or by setting the value explicitly in the
C<AVCodecContext> options or using the F<libavutil/opt.h> API
for programmatic use.
The list of supported options follow:
=over 4
=item B<b> I<integer> B<(>I<encoding,audio,video>B<)>
Set bitrate in bits/s. Default value is 200K.
=item B<ab> I<integer> B<(>I<encoding,audio>B<)>
Set audio bitrate (in bits/s). Default value is 128K.
=item B<bt> I<integer> B<(>I<encoding,video>B<)>
Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate
tolerance specifies how far ratecontrol is willing to deviate from the
target average bitrate value. This is not related to min/max
bitrate. Lowering tolerance too much has an adverse effect on quality.
=item B<flags> I<flags> B<(>I<decoding/encoding,audio,video,subtitles>B<)>
Set generic flags.
Possible values:
=over 4
=item B<mv4>
Use four motion vector by macroblock (mpeg4).
=item B<qpel>
Use 1/4 pel motion compensation.
=item B<loop>
Use loop filter.
=item B<qscale>
Use fixed qscale.
=item B<gmc>
Use gmc.
=item B<mv0>
Always try a mb with mv=E<lt>0,0E<gt>.
=item B<input_preserved>
=item B<pass1>
Use internal 2pass ratecontrol in first pass mode.
=item B<pass2>
Use internal 2pass ratecontrol in second pass mode.
=item B<gray>
Only decode/encode grayscale.
=item B<emu_edge>
Do not draw edges.
=item B<psnr>
Set error[?] variables during encoding.
=item B<truncated>
=item B<naq>
Normalize adaptive quantization.
=item B<ildct>
Use interlaced DCT.
=item B<low_delay>
Force low delay.
=item B<global_header>
Place global headers in extradata instead of every keyframe.
=item B<bitexact>
Use only bitexact stuff (except (I)DCT).
=item B<aic>
Apply H263 advanced intra coding / mpeg4 ac prediction.
=item B<cbp>
Deprecated, use mpegvideo private options instead.
=item B<qprd>
Deprecated, use mpegvideo private options instead.
=item B<ilme>
Apply interlaced motion estimation.
=item B<cgop>
Use closed gop.
=back
=item B<me_method> I<integer> B<(>I<encoding,video>B<)>
Set motion estimation method.
Possible values:
=over 4
=item B<zero>
zero motion estimation (fastest)
=item B<full>
full motion estimation (slowest)
=item B<epzs>
EPZS motion estimation (default)
=item B<esa>
esa motion estimation (alias for full)
=item B<tesa>
tesa motion estimation
=item B<dia>
dia motion estimation (alias for epzs)
=item B<log>
log motion estimation
=item B<phods>
phods motion estimation
=item B<x1>
X1 motion estimation
=item B<hex>
hex motion estimation
=item B<umh>
umh motion estimation
=item B<iter>
iter motion estimation
=back
=item B<extradata_size> I<integer>
Set extradata size.
=item B<time_base> I<rational number>
Set codec time base.
It is the fundamental unit of time (in seconds) in terms of which
frame timestamps are represented. For fixed-fps content, timebase
should be C<1 / frame_rate> and timestamp increments should be
identically 1.
=item B<g> I<integer> B<(>I<encoding,video>B<)>
Set the group of picture size. Default value is 12.
=item B<ar> I<integer> B<(>I<decoding/encoding,audio>B<)>
Set audio sampling rate (in Hz).
=item B<ac> I<integer> B<(>I<decoding/encoding,audio>B<)>
Set number of audio channels.
=item B<cutoff> I<integer> B<(>I<encoding,audio>B<)>
Set cutoff bandwidth.
=item B<frame_size> I<integer> B<(>I<encoding,audio>B<)>
Set audio frame size.
Each submitted frame except the last must contain exactly frame_size
samples per channel. May be 0 when the codec has
CODEC_CAP_VARIABLE_FRAME_SIZE set, in that case the frame size is not
restricted. It is set by some decoders to indicate constant frame
size.
=item B<frame_number> I<integer>
Set the frame number.
=item B<delay> I<integer>
=item B<qcomp> I<float> B<(>I<encoding,video>B<)>
Set video quantizer scale compression (VBR). It is used as a constant
in the ratecontrol equation. Recommended range for default rc_eq:
0.0-1.0.
=item B<qblur> I<float> B<(>I<encoding,video>B<)>
Set video quantizer scale blur (VBR).
=item B<qmin> I<integer> B<(>I<encoding,video>B<)>
Set min video quantizer scale (VBR). Must be included between -1 and
69, default value is 2.
=item B<qmax> I<integer> B<(>I<encoding,video>B<)>
Set max video quantizer scale (VBR). Must be included between -1 and
1024, default value is 31.
=item B<qdiff> I<integer> B<(>I<encoding,video>B<)>
Set max difference between the quantizer scale (VBR).
=item B<bf> I<integer> B<(>I<encoding,video>B<)>
Set max number of B frames.
=item B<b_qfactor> I<float> B<(>I<encoding,video>B<)>
Set qp factor between P and B frames.
=item B<rc_strategy> I<integer> B<(>I<encoding,video>B<)>
Set ratecontrol method.
=item B<b_strategy> I<integer> B<(>I<encoding,video>B<)>
Set strategy to choose between I/P/B-frames.
=item B<ps> I<integer> B<(>I<encoding,video>B<)>
Set RTP payload size in bytes.
=item B<mv_bits> I<integer>
=item B<header_bits> I<integer>
=item B<i_tex_bits> I<integer>
=item B<p_tex_bits> I<integer>
=item B<i_count> I<integer>
=item B<p_count> I<integer>
=item B<skip_count> I<integer>
=item B<misc_bits> I<integer>
=item B<frame_bits> I<integer>
=item B<codec_tag> I<integer>
=item B<bug> I<flags> B<(>I<decoding,video>B<)>
Workaround not auto detected encoder bugs.
Possible values:
=over 4
=item B<autodetect>
=item B<old_msmpeg4>
some old lavc generated msmpeg4v3 files (no autodetection)
=item B<xvid_ilace>
Xvid interlacing bug (autodetected if fourcc==XVIX)
=item B<ump4>
(autodetected if fourcc==UMP4)
=item B<no_padding>
padding bug (autodetected)
=item B<amv>
=item B<ac_vlc>
illegal vlc bug (autodetected per fourcc)
=item B<qpel_chroma>
=item B<std_qpel>
old standard qpel (autodetected per fourcc/version)
=item B<qpel_chroma2>
=item B<direct_blocksize>
direct-qpel-blocksize bug (autodetected per fourcc/version)
=item B<edge>
edge padding bug (autodetected per fourcc/version)
=item B<hpel_chroma>
=item B<dc_clip>
=item B<ms>
Workaround various bugs in microsoft broken decoders.
=item B<trunc>
trancated frames
=back
=item B<lelim> I<integer> B<(>I<encoding,video>B<)>
Set single coefficient elimination threshold for luminance (negative
values also consider DC coefficient).
=item B<celim> I<integer> B<(>I<encoding,video>B<)>
Set single coefficient elimination threshold for chrominance (negative
values also consider dc coefficient)
=item B<strict> I<integer> B<(>I<decoding/encoding,audio,video>B<)>
Specify how strictly to follow the standards.
Possible values:
=over 4
=item B<very>
strictly conform to a older more strict version of the spec or reference software
=item B<strict>
strictly conform to all the things in the spec no matter what consequences
=item B<normal>
=item B<unofficial>
allow unofficial extensions
=item B<experimental>
allow non standardized experimental things, experimental
(unfinished/work in progress/not well tested) decoders and encoders.
Note: experimental decoders can pose a security risk, do not use this for
decoding untrusted input.
=back
=item B<b_qoffset> I<float> B<(>I<encoding,video>B<)>
Set QP offset between P and B frames.
=item B<err_detect> I<flags> B<(>I<decoding,audio,video>B<)>
Set error detection flags.
Possible values:
=over 4
=item B<crccheck>
verify embedded CRCs
=item B<bitstream>
detect bitstream specification deviations
=item B<buffer>
detect improper bitstream length
=item B<explode>
abort decoding on minor error detection
=item B<careful>
consider things that violate the spec and have not been seen in the wild as errors
=item B<compliant>
consider all spec non compliancies as errors
=item B<aggressive>
consider things that a sane encoder should not do as an error
=back
=item B<has_b_frames> I<integer>
=item B<block_align> I<integer>
=item B<mpeg_quant> I<integer> B<(>I<encoding,video>B<)>
Use MPEG quantizers instead of H.263.
=item B<qsquish> I<float> B<(>I<encoding,video>B<)>
How to keep quantizer between qmin and qmax (0 = clip, 1 = use
differentiable function).
=item B<rc_qmod_amp> I<float> B<(>I<encoding,video>B<)>
Set experimental quantizer modulation.
=item B<rc_qmod_freq> I<integer> B<(>I<encoding,video>B<)>
Set experimental quantizer modulation.
=item B<rc_override_count> I<integer>
=item B<rc_eq> I<string> B<(>I<encoding,video>B<)>
Set rate control equation. When computing the expression, besides the
standard functions defined in the section 'Expression Evaluation', the
following functions are available: bits2qp(bits), qp2bits(qp). Also
the following constants are available: iTex pTex tex mv fCode iCount
mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
avgTex.
=item B<maxrate> I<integer> B<(>I<encoding,audio,video>B<)>
Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
=item B<minrate> I<integer> B<(>I<encoding,audio,video>B<)>
Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR
encode. It is of little use elsewise.
=item B<bufsize> I<integer> B<(>I<encoding,audio,video>B<)>
Set ratecontrol buffer size (in bits).
=item B<rc_buf_aggressivity> I<float> B<(>I<encoding,video>B<)>
Currently useless.
=item B<i_qfactor> I<float> B<(>I<encoding,video>B<)>
Set QP factor between P and I frames.
=item B<i_qoffset> I<float> B<(>I<encoding,video>B<)>
Set QP offset between P and I frames.
=item B<rc_init_cplx> I<float> B<(>I<encoding,video>B<)>
Set initial complexity for 1-pass encoding.
=item B<dct> I<integer> B<(>I<encoding,video>B<)>
Set DCT algorithm.
Possible values:
=over 4
=item B<auto>
autoselect a good one (default)
=item B<fastint>
fast integer
=item B<int>
accurate integer
=item B<mmx>
=item B<altivec>
=item B<faan>
floating point AAN DCT
=back
=item B<lumi_mask> I<float> B<(>I<encoding,video>B<)>
Compress bright areas stronger than medium ones.
=item B<tcplx_mask> I<float> B<(>I<encoding,video>B<)>
Set temporal complexity masking.
=item B<scplx_mask> I<float> B<(>I<encoding,video>B<)>
Set spatial complexity masking.
=item B<p_mask> I<float> B<(>I<encoding,video>B<)>
Set inter masking.
=item B<dark_mask> I<float> B<(>I<encoding,video>B<)>
Compress dark areas stronger than medium ones.
=item B<idct> I<integer> B<(>I<decoding/encoding,video>B<)>
Select IDCT implementation.
Possible values:
=over 4
=item B<auto>
=item B<int>
=item B<simple>
=item B<simplemmx>
=item B<arm>
=item B<altivec>
=item B<sh4>
=item B<simplearm>
=item B<simplearmv5te>
=item B<simplearmv6>
=item B<simpleneon>
=item B<simplealpha>
=item B<ipp>
=item B<xvidmmx>
=item B<faani>
floating point AAN IDCT
=back
=item B<slice_count> I<integer>
=item B<ec> I<flags> B<(>I<decoding,video>B<)>
Set error concealment strategy.
Possible values:
=over 4
=item B<guess_mvs>
iterative motion vector (MV) search (slow)
=item B<deblock>
use strong deblock filter for damaged MBs
=back
=item B<bits_per_coded_sample> I<integer>
=item B<pred> I<integer> B<(>I<encoding,video>B<)>
Set prediction method.
Possible values:
=over 4
=item B<left>
=item B<plane>
=item B<median>
=back
=item B<aspect> I<rational number> B<(>I<encoding,video>B<)>
Set sample aspect ratio.
=item B<debug> I<flags> B<(>I<decoding/encoding,audio,video,subtitles>B<)>
Print specific debug info.
Possible values:
=over 4
=item B<pict>
picture info
=item B<rc>
rate control
=item B<bitstream>
=item B<mb_type>
macroblock (MB) type
=item B<qp>
per-block quantization parameter (QP)
=item B<mv>
motion vector
=item B<dct_coeff>
=item B<skip>
=item B<startcode>
=item B<pts>
=item B<er>
error recognition
=item B<mmco>
memory management control operations (H.264)
=item B<bugs>
=item B<vis_qp>
visualize quantization parameter (QP), lower QP are tinted greener
=item B<vis_mb_type>
visualize block types
=item B<buffers>
picture buffer allocations
=item B<thread_ops>
threading operations
=back
=item B<vismv> I<integer> B<(>I<decoding,video>B<)>
Visualize motion vectors (MVs).
Possible values:
=over 4
=item B<pf>
forward predicted MVs of P-frames
=item B<bf>
forward predicted MVs of B-frames
=item B<bb>
backward predicted MVs of B-frames
=back
=item B<cmp> I<integer> B<(>I<encoding,video>B<)>
Set full pel me compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<subcmp> I<integer> B<(>I<encoding,video>B<)>
Set sub pel me compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<mbcmp> I<integer> B<(>I<encoding,video>B<)>
Set macroblock compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<ildctcmp> I<integer> B<(>I<encoding,video>B<)>
Set interlaced dct compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<dia_size> I<integer> B<(>I<encoding,video>B<)>
Set diamond type & size for motion estimation.
=item B<last_pred> I<integer> B<(>I<encoding,video>B<)>
Set amount of motion predictors from the previous frame.
=item B<preme> I<integer> B<(>I<encoding,video>B<)>
Set pre motion estimation.
=item B<precmp> I<integer> B<(>I<encoding,video>B<)>
Set pre motion estimation compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<pre_dia_size> I<integer> B<(>I<encoding,video>B<)>
Set diamond type & size for motion estimation pre-pass.
=item B<subq> I<integer> B<(>I<encoding,video>B<)>
Set sub pel motion estimation quality.
=item B<dtg_active_format> I<integer>
=item B<me_range> I<integer> B<(>I<encoding,video>B<)>
Set limit motion vectors range (1023 for DivX player).
=item B<ibias> I<integer> B<(>I<encoding,video>B<)>
Set intra quant bias.
=item B<pbias> I<integer> B<(>I<encoding,video>B<)>
Set inter quant bias.
=item B<color_table_id> I<integer>
=item B<global_quality> I<integer> B<(>I<encoding,audio,video>B<)>
=item B<coder> I<integer> B<(>I<encoding,video>B<)>
Possible values:
=over 4
=item B<vlc>
variable length coder / huffman coder
=item B<ac>
arithmetic coder
=item B<raw>
raw (no encoding)
=item B<rle>
run-length coder
=item B<deflate>
deflate-based coder
=back
=item B<context> I<integer> B<(>I<encoding,video>B<)>
Set context model.
=item B<slice_flags> I<integer>
=item B<xvmc_acceleration> I<integer>
=item B<mbd> I<integer> B<(>I<encoding,video>B<)>
Set macroblock decision algorithm (high quality mode).
Possible values:
=over 4
=item B<simple>
use mbcmp (default)
=item B<bits>
use fewest bits
=item B<rd>
use best rate distortion
=back
=item B<stream_codec_tag> I<integer>
=item B<sc_threshold> I<integer> B<(>I<encoding,video>B<)>
Set scene change threshold.
=item B<lmin> I<integer> B<(>I<encoding,video>B<)>
Set min lagrange factor (VBR).
=item B<lmax> I<integer> B<(>I<encoding,video>B<)>
Set max lagrange factor (VBR).
=item B<nr> I<integer> B<(>I<encoding,video>B<)>
Set noise reduction.
=item B<rc_init_occupancy> I<integer> B<(>I<encoding,video>B<)>
Set number of bits which should be loaded into the rc buffer before
decoding starts.
=item B<flags2> I<flags> B<(>I<decoding/encoding,audio,video>B<)>
Possible values:
=over 4
=item B<fast>
Allow non spec compliant speedup tricks.
=item B<sgop>
Deprecated, use mpegvideo private options instead.
=item B<noout>
Skip bitstream encoding.
=item B<ignorecrop>
Ignore cropping information from sps.
=item B<local_header>
Place global headers at every keyframe instead of in extradata.
=item B<chunks>
Frame data might be split into multiple chunks.
=item B<showall>
Show all frames before the first keyframe.
=item B<skiprd>
Deprecated, use mpegvideo private options instead.
=back
=item B<error> I<integer> B<(>I<encoding,video>B<)>
=item B<qns> I<integer> B<(>I<encoding,video>B<)>
Deprecated, use mpegvideo private options instead.
=item B<threads> I<integer> B<(>I<decoding/encoding,video>B<)>
Possible values:
=over 4
=item B<auto>
detect a good number of threads
=back
=item B<me_threshold> I<integer> B<(>I<encoding,video>B<)>
Set motion estimation threshold.
=item B<mb_threshold> I<integer> B<(>I<encoding,video>B<)>
Set macroblock threshold.
=item B<dc> I<integer> B<(>I<encoding,video>B<)>
Set intra_dc_precision.
=item B<nssew> I<integer> B<(>I<encoding,video>B<)>
Set nsse weight.
=item B<skip_top> I<integer> B<(>I<decoding,video>B<)>
Set number of macroblock rows at the top which are skipped.
=item B<skip_bottom> I<integer> B<(>I<decoding,video>B<)>
Set number of macroblock rows at the bottom which are skipped.
=item B<profile> I<integer> B<(>I<encoding,audio,video>B<)>
Possible values:
=over 4
=item B<unknown>
=item B<aac_main>
=item B<aac_low>
=item B<aac_ssr>
=item B<aac_ltp>
=item B<aac_he>
=item B<aac_he_v2>
=item B<aac_ld>
=item B<aac_eld>
=item B<mpeg2_aac_low>
=item B<mpeg2_aac_he>
=item B<dts>
=item B<dts_es>
=item B<dts_96_24>
=item B<dts_hd_hra>
=item B<dts_hd_ma>
=back
=item B<level> I<integer> B<(>I<encoding,audio,video>B<)>
Possible values:
=over 4
=item B<unknown>
=back
=item B<lowres> I<integer> B<(>I<decoding,audio,video>B<)>
Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
=item B<skip_threshold> I<integer> B<(>I<encoding,video>B<)>
Set frame skip threshold.
=item B<skip_factor> I<integer> B<(>I<encoding,video>B<)>
Set frame skip factor.
=item B<skip_exp> I<integer> B<(>I<encoding,video>B<)>
Set frame skip exponent.
=item B<skipcmp> I<integer> B<(>I<encoding,video>B<)>
Set frame skip compare function.
Possible values:
=over 4
=item B<sad>
sum of absolute differences, fast (default)
=item B<sse>
sum of squared errors
=item B<satd>
sum of absolute Hadamard transformed differences
=item B<dct>
sum of absolute DCT transformed differences
=item B<psnr>
sum of squared quantization errors (avoid, low quality)
=item B<bit>
number of bits needed for the block
=item B<rd>
rate distortion optimal, slow
=item B<zero>
=item B<vsad>
sum of absolute vertical differences
=item B<vsse>
sum of squared vertical differences
=item B<nsse>
noise preserving sum of squared differences
=item B<w53>
5/3 wavelet, only used in snow
=item B<w97>
9/7 wavelet, only used in snow
=item B<dctmax>
=item B<chroma>
=back
=item B<border_mask> I<float> B<(>I<encoding,video>B<)>
Increase the quantizer for macroblocks close to borders.
=item B<mblmin> I<integer> B<(>I<encoding,video>B<)>
Set min macroblock lagrange factor (VBR).
=item B<mblmax> I<integer> B<(>I<encoding,video>B<)>
Set max macroblock lagrange factor (VBR).
=item B<mepc> I<integer> B<(>I<encoding,video>B<)>
Set motion estimation bitrate penalty compensation (1.0 = 256).
=item B<skip_loop_filter> I<integer> B<(>I<decoding,video>B<)>
=item B<skip_idct> I<integer> B<(>I<decoding,video>B<)>
=item B<skip_frame> I<integer> B<(>I<decoding,video>B<)>
Make decoder discard processing depending on the frame type selected
by the option value.
B<skip_loop_filter> skips frame loop filtering, B<skip_idct>
skips frame IDCT/dequantization, B<skip_frame> skips decoding.
Possible values:
=over 4
=item B<none>
Discard no frame.
=item B<default>
Discard useless frames like 0-sized frames.
=item B<noref>
Discard all non-reference frames.
=item B<bidir>
Discard all bidirectional frames.
=item B<nokey>
Discard all frames excepts keyframes.
=item B<all>
Discard all frames.
=back
Default value is B<default>.
=item B<bidir_refine> I<integer> B<(>I<encoding,video>B<)>
Refine the two motion vectors used in bidirectional macroblocks.
=item B<brd_scale> I<integer> B<(>I<encoding,video>B<)>
Downscale frames for dynamic B-frame decision.
=item B<keyint_min> I<integer> B<(>I<encoding,video>B<)>
Set minimum interval between IDR-frames.
=item B<refs> I<integer> B<(>I<encoding,video>B<)>
Set reference frames to consider for motion compensation.
=item B<chromaoffset> I<integer> B<(>I<encoding,video>B<)>
Set chroma qp offset from luma.
=item B<trellis> I<integer> B<(>I<encoding,audio,video>B<)>
Set rate-distortion optimal quantization.
=item B<sc_factor> I<integer> B<(>I<encoding,video>B<)>
Set value multiplied by qscale for each frame and added to
scene_change_score.
=item B<mv0_threshold> I<integer> B<(>I<encoding,video>B<)>
=item B<b_sensitivity> I<integer> B<(>I<encoding,video>B<)>
Adjust sensitivity of b_frame_strategy 1.
=item B<compression_level> I<integer> B<(>I<encoding,audio,video>B<)>
=item B<min_prediction_order> I<integer> B<(>I<encoding,audio>B<)>
=item B<max_prediction_order> I<integer> B<(>I<encoding,audio>B<)>
=item B<timecode_frame_start> I<integer> B<(>I<encoding,video>B<)>
Set GOP timecode frame start number, in non drop frame format.
=item B<request_channels> I<integer> B<(>I<decoding,audio>B<)>
Set desired number of audio channels.
=item B<bits_per_raw_sample> I<integer>
=item B<channel_layout> I<integer> B<(>I<decoding/encoding,audio>B<)>
Possible values:
=over 4
=back
=item B<request_channel_layout> I<integer> B<(>I<decoding,audio>B<)>
Possible values:
=over 4
=back
=item B<rc_max_vbv_use> I<float> B<(>I<encoding,video>B<)>
=item B<rc_min_vbv_use> I<float> B<(>I<encoding,video>B<)>
=item B<ticks_per_frame> I<integer> B<(>I<decoding/encoding,audio,video>B<)>
=item B<color_primaries> I<integer> B<(>I<decoding/encoding,video>B<)>
=item B<color_trc> I<integer> B<(>I<decoding/encoding,video>B<)>
=item B<colorspace> I<integer> B<(>I<decoding/encoding,video>B<)>
=item B<color_range> I<integer> B<(>I<decoding/encoding,video>B<)>
=item B<chroma_sample_location> I<integer> B<(>I<decoding/encoding,video>B<)>
=item B<log_level_offset> I<integer>
Set the log level offset.
=item B<slices> I<integer> B<(>I<encoding,video>B<)>
Number of slices, used in parallelized encoding.
=item B<thread_type> I<flags> B<(>I<decoding/encoding,video>B<)>
Select multithreading type.
Possible values:
=over 4
=item B<slice>
=item B<frame>
=back
=item B<audio_service_type> I<integer> B<(>I<encoding,audio>B<)>
Set audio service type.
Possible values:
=over 4
=item B<ma>
Main Audio Service
=item B<ef>
Effects
=item B<vi>
Visually Impaired
=item B<hi>
Hearing Impaired
=item B<di>
Dialogue
=item B<co>
Commentary
=item B<em>
Emergency
=item B<vo>
Voice Over
=item B<ka>
Karaoke
=back
=item B<request_sample_fmt> I<sample_fmt> B<(>I<decoding,audio>B<)>
Set sample format audio decoders should prefer. Default value is
C<none>.
=item B<pkt_timebase> I<rational number>
=item B<sub_charenc> I<encoding> B<(>I<decoding,subtitles>B<)>
Set the input subtitles character encoding.
=item B<field_order> I<field_order> B<(>I<video>B<)>
Set/override the field order of the video.
Possible values:
=over 4
=item B<progressive>
Progressive video
=item B<tt>
Interlaced video, top field coded and displayed first
=item B<bb>
Interlaced video, bottom field coded and displayed first
=item B<tb>
Interlaced video, top coded first, bottom displayed first
=item B<bt>
Interlaced video, bottom coded first, top displayed first
=back
=item B<skip_alpha> I<integer> B<(>I<decoding,video>B<)>
Set to 1 to disable processing alpha (transparency). This works like the
B<gray> flag in the B<flags> option which skips chroma information
instead of alpha. Default is 0.
=back
=head1 DECODERS
Decoders are configured elements in FFmpeg which allow the decoding of
multimedia streams.
When you configure your FFmpeg build, all the supported native decoders
are enabled by default. Decoders requiring an external library must be enabled
manually via the corresponding C<--enable-lib> option. You can list all
available decoders using the configure option C<--list-decoders>.
You can disable all the decoders with the configure option
C<--disable-decoders> and selectively enable / disable single decoders
with the options C<--enable-decoder=I<DECODER>> /
C<--disable-decoder=I<DECODER>>.
The option C<-codecs> of the ff* tools will display the list of
enabled decoders.
=head1 VIDEO DECODERS
A description of some of the currently available video decoders
follows.
=head2 rawvideo
Raw video decoder.
This decoder decodes rawvideo streams.
=head3 Options
=over 4
=item B<top> I<top_field_first>
Specify the assumed field type of the input video.
=over 4
=item B<-1>
the video is assumed to be progressive (default)
=item B<0>
bottom-field-first is assumed
=item B<1>
top-field-first is assumed
=back
=back
=head1 AUDIO DECODERS
=head2 ffwavesynth
Internal wave synthetizer.
This decoder generates wave patterns according to predefined sequences. Its
use is purely internal and the format of the data it accepts is not publicly
documented.
=head2 libcelt
libcelt decoder wrapper.
libcelt allows libavcodec to decode the Xiph CELT ultra-low delay audio codec.
Requires the presence of the libcelt headers and library during configuration.
You need to explicitly configure the build with C<--enable-libcelt>.
=head2 libgsm
libgsm decoder wrapper.
libgsm allows libavcodec to decode the GSM full rate audio codec. Requires
the presence of the libgsm headers and library during configuration. You need
to explicitly configure the build with C<--enable-libgsm>.
This decoder supports both the ordinary GSM and the Microsoft variant.
=head2 libilbc
libilbc decoder wrapper.
libilbc allows libavcodec to decode the Internet Low Bitrate Codec (iLBC)
audio codec. Requires the presence of the libilbc headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libilbc>.
=head3 Options
The following option is supported by the libilbc wrapper.
=over 4
=item B<enhance>
Enable the enhancement of the decoded audio when set to 1. The default
value is 0 (disabled).
=back
=head2 libopencore-amrnb
libopencore-amrnb decoder wrapper.
libopencore-amrnb allows libavcodec to decode the Adaptive Multi-Rate
Narrowband audio codec. Using it requires the presence of the
libopencore-amrnb headers and library during configuration. You need to
explicitly configure the build with C<--enable-libopencore-amrnb>.
An FFmpeg native decoder for AMR-NB exists, so users can decode AMR-NB
without this library.
=head2 libopencore-amrwb
libopencore-amrwb decoder wrapper.
libopencore-amrwb allows libavcodec to decode the Adaptive Multi-Rate
Wideband audio codec. Using it requires the presence of the
libopencore-amrwb headers and library during configuration. You need to
explicitly configure the build with C<--enable-libopencore-amrwb>.
An FFmpeg native decoder for AMR-WB exists, so users can decode AMR-WB
without this library.
=head2 libopus
libopus decoder wrapper.
libopus allows libavcodec to decode the Opus Interactive Audio Codec.
Requires the presence of the libopus headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libopus>.
=head1 SUBTITLES DECODERS
=head2 dvdsub
This codec decodes the bitmap subtitles used in DVDs; the same subtitles can
also be found in VobSub file pairs and in some Matroska files.
=head3 Options
=over 4
=item B<palette>
Specify the global palette used by the bitmaps. When stored in VobSub, the
palette is normally specified in the index file; in Matroska, the palette is
stored in the codec extra-data in the same format as in VobSub. In DVDs, the
palette is stored in the IFO file, and therefore not available when reading
from dumped VOB files.
The format for this option is a string containing 16 24-bits hexadecimal
numbers (without 0x prefix) separated by comas, for example C<0d00ee,
ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b>.
=back
=head2 libzvbi-teletext
Libzvbi allows libavcodec to decode DVB teletext pages and DVB teletext
subtitles. Requires the presence of the libzvbi headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libzvbi>.
=head3 Options
=over 4
=item B<txt_page>
List of teletext page numbers to decode. You may use the special * string to
match all pages. Pages that do not match the specified list are dropped.
Default value is *.
=item B<txt_chop_top>
Discards the top teletext line. Default value is 1.
=item B<txt_format>
Specifies the format of the decoded subtitles. The teletext decoder is capable
of decoding the teletext pages to bitmaps or to simple text, you should use
"bitmap" for teletext pages, because certain graphics and colors cannot be
expressed in simple text. You might use "text" for teletext based subtitles if
your application can handle simple text based subtitles. Default value is
bitmap.
=item B<txt_left>
X offset of generated bitmaps, default is 0.
=item B<txt_top>
Y offset of generated bitmaps, default is 0.
=item B<txt_chop_spaces>
Chops leading and trailing spaces and removes empty lines from the generated
text. This option is useful for teletext based subtitles where empty spaces may
be present at the start or at the end of the lines or empty lines may be
present between the subtitle lines because of double-sized teletext charactes.
Default value is 1.
=item B<txt_duration>
Sets the display duration of the decoded teletext pages or subtitles in
miliseconds. Default value is 30000 which is 30 seconds.
=item B<txt_transparent>
Force transparent background of the generated teletext bitmaps. Default value
is 0 which means an opaque (black) background.
=back
=head1 ENCODERS
Encoders are configured elements in FFmpeg which allow the encoding of
multimedia streams.
When you configure your FFmpeg build, all the supported native encoders
are enabled by default. Encoders requiring an external library must be enabled
manually via the corresponding C<--enable-lib> option. You can list all
available encoders using the configure option C<--list-encoders>.
You can disable all the encoders with the configure option
C<--disable-encoders> and selectively enable / disable single encoders
with the options C<--enable-encoder=I<ENCODER>> /
C<--disable-encoder=I<ENCODER>>.
The option C<-codecs> of the ff* tools will display the list of
enabled encoders.
=head1 AUDIO ENCODERS
A description of some of the currently available audio encoders
follows.
=head2 aac
Advanced Audio Coding (AAC) encoder.
This encoder is an experimental FFmpeg-native AAC encoder. Currently only the
low complexity (AAC-LC) profile is supported. To use this encoder, you must set
B<strict> option to B<experimental> or lower.
As this encoder is experimental, unexpected behavior may exist from time to
time. For a more stable AAC encoder, see libvo-aacenc. However, be warned
that it has a worse quality reported by some users.
=head3 Options
=over 4
=item B<b>
Set bit rate in bits/s. Setting this automatically activates constant bit rate
(CBR) mode.
=item B<q>
Set quality for variable bit rate (VBR) mode. This option is valid only using
the B<ffmpeg> command-line tool. For library interface users, use
B<global_quality>.
=item B<stereo_mode>
Set stereo encoding mode. Possible values:
=over 4
=item B<auto>
Automatically selected by the encoder.
=item B<ms_off>
Disable middle/side encoding. This is the default.
=item B<ms_force>
Force middle/side encoding.
=back
=item B<aac_coder>
Set AAC encoder coding method. Possible values:
=over 4
=item B<faac>
FAAC-inspired method.
This method is a simplified reimplementation of the method used in FAAC, which
sets thresholds proportional to the band energies, and then decreases all the
thresholds with quantizer steps to find the appropriate quantization with
distortion below threshold band by band.
The quality of this method is comparable to the two loop searching method
descibed below, but somewhat a little better and slower.
=item B<anmr>
Average noise to mask ratio (ANMR) trellis-based solution.
This has a theoretic best quality out of all the coding methods, but at the
cost of the slowest speed.
=item B<twoloop>
Two loop searching (TLS) method.
This method first sets quantizers depending on band thresholds and then tries
to find an optimal combination by adding or subtracting a specific value from
all quantizers and adjusting some individual quantizer a little.
This method produces similar quality with the FAAC method and is the default.
=item B<fast>
Constant quantizer method.
This method sets a constant quantizer for all bands. This is the fastest of all
the methods, yet produces the worst quality.
=back
=back
=head2 ac3 and ac3_fixed
AC-3 audio encoders.
These encoders implement part of ATSC A/52:2010 and ETSI TS 102 366, as well as
the undocumented RealAudio 3 (a.k.a. dnet).
The I<ac3> encoder uses floating-point math, while the I<ac3_fixed>
encoder only uses fixed-point integer math. This does not mean that one is
always faster, just that one or the other may be better suited to a
particular system. The floating-point encoder will generally produce better
quality audio for a given bitrate. The I<ac3_fixed> encoder is not the
default codec for any of the output formats, so it must be specified explicitly
using the option C<-acodec ac3_fixed> in order to use it.
=head3 AC-3 Metadata
The AC-3 metadata options are used to set parameters that describe the audio,
but in most cases do not affect the audio encoding itself. Some of the options
do directly affect or influence the decoding and playback of the resulting
bitstream, while others are just for informational purposes. A few of the
options will add bits to the output stream that could otherwise be used for
audio data, and will thus affect the quality of the output. Those will be
indicated accordingly with a note in the option list below.
These parameters are described in detail in several publicly-available
documents.
=over 4
=item *<E<lt>B<http://www.atsc.org/cms/standards/a_52-2010.pdf>E<gt>>
=item *<E<lt>B<http://www.atsc.org/cms/standards/a_54a_with_corr_1.pdf>E<gt>>
=item *<E<lt>B<http://www.dolby.com/uploadedFiles/zz-_Shared_Assets/English_PDFs/Professional/18_Metadata.Guide.pdf>E<gt>>
=item *<E<lt>B<http://www.dolby.com/uploadedFiles/zz-_Shared_Assets/English_PDFs/Professional/46_DDEncodingGuidelines.pdf>E<gt>>
=back
=head4 Metadata Control Options
=over 4
=item B<-per_frame_metadata> I<boolean>
Allow Per-Frame Metadata. Specifies if the encoder should check for changing
metadata for each frame.
=over 4
=item B<0>
The metadata values set at initialization will be used for every frame in the
stream. (default)
=item B<1>
Metadata values can be changed before encoding each frame.
=back
=back
=head4 Downmix Levels
=over 4
=item B<-center_mixlev> I<level>
Center Mix Level. The amount of gain the decoder should apply to the center
channel when downmixing to stereo. This field will only be written to the
bitstream if a center channel is present. The value is specified as a scale
factor. There are 3 valid values:
=over 4
=item B<0.707>
Apply -3dB gain
=item B<0.595>
Apply -4.5dB gain (default)
=item B<0.500>
Apply -6dB gain
=back
=item B<-surround_mixlev> I<level>
Surround Mix Level. The amount of gain the decoder should apply to the surround
channel(s) when downmixing to stereo. This field will only be written to the
bitstream if one or more surround channels are present. The value is specified
as a scale factor. There are 3 valid values:
=over 4
=item B<0.707>
Apply -3dB gain
=item B<0.500>
Apply -6dB gain (default)
=item B<0.000>
Silence Surround Channel(s)
=back
=back
=head4 Audio Production Information
Audio Production Information is optional information describing the mixing
environment. Either none or both of the fields are written to the bitstream.
=over 4
=item B<-mixing_level> I<number>
Mixing Level. Specifies peak sound pressure level (SPL) in the production
environment when the mix was mastered. Valid values are 80 to 111, or -1 for
unknown or not indicated. The default value is -1, but that value cannot be
used if the Audio Production Information is written to the bitstream. Therefore,
if the C<room_type> option is not the default value, the C<mixing_level>
option must not be -1.
=item B<-room_type> I<type>
Room Type. Describes the equalization used during the final mixing session at
the studio or on the dubbing stage. A large room is a dubbing stage with the
industry standard X-curve equalization; a small room has flat equalization.
This field will not be written to the bitstream if both the C<mixing_level>
option and the C<room_type> option have the default values.
=over 4
=item B<0>
=item B<notindicated>
Not Indicated (default)
=item B<1>
=item B<large>
Large Room
=item B<2>
=item B<small>
Small Room
=back
=back
=head4 Other Metadata Options
=over 4
=item B<-copyright> I<boolean>
Copyright Indicator. Specifies whether a copyright exists for this audio.
=over 4
=item B<0>
=item B<off>
No Copyright Exists (default)
=item B<1>
=item B<on>
Copyright Exists
=back
=item B<-dialnorm> I<value>
Dialogue Normalization. Indicates how far the average dialogue level of the
program is below digital 100% full scale (0 dBFS). This parameter determines a
level shift during audio reproduction that sets the average volume of the
dialogue to a preset level. The goal is to match volume level between program
sources. A value of -31dB will result in no volume level change, relative to
the source volume, during audio reproduction. Valid values are whole numbers in
the range -31 to -1, with -31 being the default.
=item B<-dsur_mode> I<mode>
Dolby Surround Mode. Specifies whether the stereo signal uses Dolby Surround
(Pro Logic). This field will only be written to the bitstream if the audio
stream is stereo. Using this option does B<NOT> mean the encoder will actually
apply Dolby Surround processing.
=over 4
=item B<0>
=item B<notindicated>
Not Indicated (default)
=item B<1>
=item B<off>
Not Dolby Surround Encoded
=item B<2>
=item B<on>
Dolby Surround Encoded
=back
=item B<-original> I<boolean>
Original Bit Stream Indicator. Specifies whether this audio is from the
original source and not a copy.
=over 4
=item B<0>
=item B<off>
Not Original Source
=item B<1>
=item B<on>
Original Source (default)
=back
=back
=head3 Extended Bitstream Information
The extended bitstream options are part of the Alternate Bit Stream Syntax as
specified in Annex D of the A/52:2010 standard. It is grouped into 2 parts.
If any one parameter in a group is specified, all values in that group will be
written to the bitstream. Default values are used for those that are written
but have not been specified. If the mixing levels are written, the decoder
will use these values instead of the ones specified in the C<center_mixlev>
and C<surround_mixlev> options if it supports the Alternate Bit Stream
Syntax.
=head4 Extended Bitstream Information - Part 1
=over 4
=item B<-dmix_mode> I<mode>
Preferred Stereo Downmix Mode. Allows the user to select either Lt/Rt
(Dolby Surround) or Lo/Ro (normal stereo) as the preferred stereo downmix mode.
=over 4
=item B<0>
=item B<notindicated>
Not Indicated (default)
=item B<1>
=item B<ltrt>
Lt/Rt Downmix Preferred
=item B<2>
=item B<loro>
Lo/Ro Downmix Preferred
=back
=item B<-ltrt_cmixlev> I<level>
Lt/Rt Center Mix Level. The amount of gain the decoder should apply to the
center channel when downmixing to stereo in Lt/Rt mode.
=over 4
=item B<1.414>
Apply +3dB gain
=item B<1.189>
Apply +1.5dB gain
=item B<1.000>
Apply 0dB gain
=item B<0.841>
Apply -1.5dB gain
=item B<0.707>
Apply -3.0dB gain
=item B<0.595>
Apply -4.5dB gain (default)
=item B<0.500>
Apply -6.0dB gain
=item B<0.000>
Silence Center Channel
=back
=item B<-ltrt_surmixlev> I<level>
Lt/Rt Surround Mix Level. The amount of gain the decoder should apply to the
surround channel(s) when downmixing to stereo in Lt/Rt mode.
=over 4
=item B<0.841>
Apply -1.5dB gain
=item B<0.707>
Apply -3.0dB gain
=item B<0.595>
Apply -4.5dB gain
=item B<0.500>
Apply -6.0dB gain (default)
=item B<0.000>
Silence Surround Channel(s)
=back
=item B<-loro_cmixlev> I<level>
Lo/Ro Center Mix Level. The amount of gain the decoder should apply to the
center channel when downmixing to stereo in Lo/Ro mode.
=over 4
=item B<1.414>
Apply +3dB gain
=item B<1.189>
Apply +1.5dB gain
=item B<1.000>
Apply 0dB gain
=item B<0.841>
Apply -1.5dB gain
=item B<0.707>
Apply -3.0dB gain
=item B<0.595>
Apply -4.5dB gain (default)
=item B<0.500>
Apply -6.0dB gain
=item B<0.000>
Silence Center Channel
=back
=item B<-loro_surmixlev> I<level>
Lo/Ro Surround Mix Level. The amount of gain the decoder should apply to the
surround channel(s) when downmixing to stereo in Lo/Ro mode.
=over 4
=item B<0.841>
Apply -1.5dB gain
=item B<0.707>
Apply -3.0dB gain
=item B<0.595>
Apply -4.5dB gain
=item B<0.500>
Apply -6.0dB gain (default)
=item B<0.000>
Silence Surround Channel(s)
=back
=back
=head4 Extended Bitstream Information - Part 2
=over 4
=item B<-dsurex_mode> I<mode>
Dolby Surround EX Mode. Indicates whether the stream uses Dolby Surround EX
(7.1 matrixed to 5.1). Using this option does B<NOT> mean the encoder will actually
apply Dolby Surround EX processing.
=over 4
=item B<0>
=item B<notindicated>
Not Indicated (default)
=item B<1>
=item B<on>
Dolby Surround EX Off
=item B<2>
=item B<off>
Dolby Surround EX On
=back
=item B<-dheadphone_mode> I<mode>
Dolby Headphone Mode. Indicates whether the stream uses Dolby Headphone
encoding (multi-channel matrixed to 2.0 for use with headphones). Using this
option does B<NOT> mean the encoder will actually apply Dolby Headphone
processing.
=over 4
=item B<0>
=item B<notindicated>
Not Indicated (default)
=item B<1>
=item B<on>
Dolby Headphone Off
=item B<2>
=item B<off>
Dolby Headphone On
=back
=item B<-ad_conv_type> I<type>
A/D Converter Type. Indicates whether the audio has passed through HDCD A/D
conversion.
=over 4
=item B<0>
=item B<standard>
Standard A/D Converter (default)
=item B<1>
=item B<hdcd>
HDCD A/D Converter
=back
=back
=head3 Other AC-3 Encoding Options
=over 4
=item B<-stereo_rematrixing> I<boolean>
Stereo Rematrixing. Enables/Disables use of rematrixing for stereo input. This
is an optional AC-3 feature that increases quality by selectively encoding
the left/right channels as mid/side. This option is enabled by default, and it
is highly recommended that it be left as enabled except for testing purposes.
=back
=head3 Floating-Point-Only AC-3 Encoding Options
These options are only valid for the floating-point encoder and do not exist
for the fixed-point encoder due to the corresponding features not being
implemented in fixed-point.
=over 4
=item B<-channel_coupling> I<boolean>
Enables/Disables use of channel coupling, which is an optional AC-3 feature
that increases quality by combining high frequency information from multiple
channels into a single channel. The per-channel high frequency information is
sent with less accuracy in both the frequency and time domains. This allows
more bits to be used for lower frequencies while preserving enough information
to reconstruct the high frequencies. This option is enabled by default for the
floating-point encoder and should generally be left as enabled except for
testing purposes or to increase encoding speed.
=over 4
=item B<-1>
=item B<auto>
Selected by Encoder (default)
=item B<0>
=item B<off>
Disable Channel Coupling
=item B<1>
=item B<on>
Enable Channel Coupling
=back
=item B<-cpl_start_band> I<number>
Coupling Start Band. Sets the channel coupling start band, from 1 to 15. If a
value higher than the bandwidth is used, it will be reduced to 1 less than the
coupling end band. If I<auto> is used, the start band will be determined by
the encoder based on the bit rate, sample rate, and channel layout. This option
has no effect if channel coupling is disabled.
=over 4
=item B<-1>
=item B<auto>
Selected by Encoder (default)
=back
=back
=head2 libmp3lame
LAME (Lame Ain't an MP3 Encoder) MP3 encoder wrapper.
Requires the presence of the libmp3lame headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libmp3lame>.
See libshine for a fixed-point MP3 encoder, although with a
lower quality.
=head3 Options
The following options are supported by the libmp3lame wrapper. The
B<lame>-equivalent of the options are listed in parentheses.
=over 4
=item B<b (>I<-b>B<)>
Set bitrate expressed in bits/s for CBR. LAME C<bitrate> is
expressed in kilobits/s.
=item B<q (>I<-V>B<)>
Set constant quality setting for VBR. This option is valid only
using the B<ffmpeg> command-line tool. For library interface
users, use B<global_quality>.
=item B<compression_level (>I<-q>B<)>
Set algorithm quality. Valid arguments are integers in the 0-9 range,
with 0 meaning highest quality but slowest, and 9 meaning fastest
while producing the worst quality.
=item B<reservoir>
Enable use of bit reservoir when set to 1. Default value is 1. LAME
has this enabled by default, but can be overriden by use
B<--nores> option.
=item B<joint_stereo (>I<-m j>B<)>
Enable the encoder to use (on a frame by frame basis) either L/R
stereo or mid/side stereo. Default value is 1.
=back
=head2 libopencore-amrnb
OpenCORE Adaptive Multi-Rate Narrowband encoder.
Requires the presence of the libopencore-amrnb headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libopencore-amrnb --enable-version3>.
This is a mono-only encoder. Officially it only supports 8000Hz sample rate,
but you can override it by setting B<strict> to B<unofficial> or
lower.
=head3 Options
=over 4
=item B<b>
Set bitrate in bits per second. Only the following bitrates are supported,
otherwise libavcodec will round to the nearest valid bitrate.
=over 4
=item B<4750>
=item B<5150>
=item B<5900>
=item B<6700>
=item B<7400>
=item B<7950>
=item B<10200>
=item B<12200>
=back
=item B<dtx>
Allow discontinuous transmission (generate comfort noise) when set to 1. The
default value is 0 (disabled).
=back
=head2 libshine
Shine Fixed-Point MP3 encoder wrapper.
Shine is a fixed-point MP3 encoder. It has a far better performance on
platforms without an FPU, e.g. armel CPUs, and some phones and tablets.
However, as it is more targeted on performance than quality, it is not on par
with LAME and other production-grade encoders quality-wise. Also, according to
the project's homepage, this encoder may not be free of bugs as the code was
written a long time ago and the project was dead for at least 5 years.
This encoder only supports stereo and mono input. This is also CBR-only.
The original project (last updated in early 2007) is at
E<lt>B<http://sourceforge.net/projects/libshine-fxp/>E<gt>. We only support the
updated fork by the Savonet/Liquidsoap project at E<lt>B<https://github.com/savonet/shine>E<gt>.
Requires the presence of the libshine headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libshine>.
See also libmp3lame.
=head3 Options
The following options are supported by the libshine wrapper. The
B<shineenc>-equivalent of the options are listed in parentheses.
=over 4
=item B<b (>I<-b>B<)>
Set bitrate expressed in bits/s for CBR. B<shineenc> B<-b> option
is expressed in kilobits/s.
=back
=head2 libtwolame
TwoLAME MP2 encoder wrapper.
Requires the presence of the libtwolame headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libtwolame>.
=head3 Options
The following options are supported by the libtwolame wrapper. The
B<twolame>-equivalent options follow the FFmpeg ones and are in
parentheses.
=over 4
=item B<b (>I<-b>B<)>
Set bitrate expressed in bits/s for CBR. B<twolame> B<b>
option is expressed in kilobits/s. Default value is 128k.
=item B<q (>I<-V>B<)>
Set quality for experimental VBR support. Maximum value range is
from -50 to 50, useful range is from -10 to 10. The higher the
value, the better the quality. This option is valid only using the
B<ffmpeg> command-line tool. For library interface users,
use B<global_quality>.
=item B<mode (>I<--mode>B<)>
Set the mode of the resulting audio. Possible values:
=over 4
=item B<auto>
Choose mode automatically based on the input. This is the default.
=item B<stereo>
Stereo
=item B<joint_stereo>
Joint stereo
=item B<dual_channel>
Dual channel
=item B<mono>
Mono
=back
=item B<psymodel (>I<--psyc-mode>B<)>
Set psychoacoustic model to use in encoding. The argument must be
an integer between -1 and 4, inclusive. The higher the value, the
better the quality. The default value is 3.
=item B<energy_levels (>I<--energy>B<)>
Enable energy levels extensions when set to 1. The default value is
0 (disabled).
=item B<error_protection (>I<--protect>B<)>
Enable CRC error protection when set to 1. The default value is 0
(disabled).
=item B<copyright (>I<--copyright>B<)>
Set MPEG audio copyright flag when set to 1. The default value is 0
(disabled).
=item B<original (>I<--original>B<)>
Set MPEG audio original flag when set to 1. The default value is 0
(disabled).
=back
=head2 libvo-aacenc
VisualOn AAC encoder.
Requires the presence of the libvo-aacenc headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libvo-aacenc --enable-version3>.
This encoder is considered to be worse than the
native experimental FFmpeg AAC encoder, according to
multiple sources.
=head3 Options
The VisualOn AAC encoder only support encoding AAC-LC and up to 2
channels. It is also CBR-only.
=over 4
=item B<b>
Set bit rate in bits/s.
=back
=head2 libvo-amrwbenc
VisualOn Adaptive Multi-Rate Wideband encoder.
Requires the presence of the libvo-amrwbenc headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libvo-amrwbenc --enable-version3>.
This is a mono-only encoder. Officially it only supports 16000Hz sample
rate, but you can override it by setting B<strict> to
B<unofficial> or lower.
=head3 Options
=over 4
=item B<b>
Set bitrate in bits/s. Only the following bitrates are supported, otherwise
libavcodec will round to the nearest valid bitrate.
=over 4
=item B<6600>
=item B<8850>
=item B<12650>
=item B<14250>
=item B<15850>
=item B<18250>
=item B<19850>
=item B<23050>
=item B<23850>
=back
=item B<dtx>
Allow discontinuous transmission (generate comfort noise) when set to 1. The
default value is 0 (disabled).
=back
=head2 libopus
libopus Opus Interactive Audio Codec encoder wrapper.
Requires the presence of the libopus headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libopus>.
=head3 Option Mapping
Most libopus options are modeled after the B<opusenc> utility from
opus-tools. The following is an option mapping chart describing options
supported by the libopus wrapper, and their B<opusenc>-equivalent
in parentheses.
=over 4
=item B<b (>I<bitrate>B<)>
Set the bit rate in bits/s. FFmpeg's B<b> option is
expressed in bits/s, while B<opusenc>'s B<bitrate> in
kilobits/s.
=item B<vbr (>I<vbr>B<,> I<hard-cbr>B<, and> I<cvbr>B<)>
Set VBR mode. The FFmpeg B<vbr> option has the following
valid arguments, with the their B<opusenc> equivalent options
in parentheses:
=over 4
=item B<off (>I<hard-cbr>B<)>
Use constant bit rate encoding.
=item B<on (>I<vbr>B<)>
Use variable bit rate encoding (the default).
=item B<constrained (>I<cvbr>B<)>
Use constrained variable bit rate encoding.
=back
=item B<compression_level (>I<comp>B<)>
Set encoding algorithm complexity. Valid options are integers in
the 0-10 range. 0 gives the fastest encodes but lower quality, while 10
gives the highest quality but slowest encoding. The default is 10.
=item B<frame_duration (>I<framesize>B<)>
Set maximum frame size, or duration of a frame in milliseconds. The
argument must be exactly the following: 2.5, 5, 10, 20, 40, 60. Smaller
frame sizes achieve lower latency but less quality at a given bitrate.
Sizes greater than 20ms are only interesting at fairly low bitrates.
The default of FFmpeg is 10ms, but is 20ms in B<opusenc>.
=item B<packet_loss (>I<expect-loss>B<)>
Set expected packet loss percentage. The default is 0.
=item B<application (N.A.)>
Set intended application type. Valid options are listed below:
=over 4
=item B<voip>
Favor improved speech intelligibility.
=item B<audio>
Favor faithfulness to the input (the default).
=item B<lowdelay>
Restrict to only the lowest delay modes.
=back
=item B<cutoff (N.A.)>
Set cutoff bandwidth in Hz. The argument must be exactly one of the
following: 4000, 6000, 8000, 12000, or 20000, corresponding to
narrowband, mediumband, wideband, super wideband, and fullband
respectively. The default is 0 (cutoff disabled).
=back
=head2 libvorbis
libvorbis encoder wrapper.
Requires the presence of the libvorbisenc headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libvorbis>.
=head3 Options
The following options are supported by the libvorbis wrapper. The
B<oggenc>-equivalent of the options are listed in parentheses.
To get a more accurate and extensive documentation of the libvorbis
options, consult the libvorbisenc's and B<oggenc>'s documentations.
See E<lt>B<http://xiph.org/vorbis/>E<gt>,
E<lt>B<http://wiki.xiph.org/Vorbis-tools>E<gt>, and oggenc(1).
=over 4
=item B<b (>I<-b>B<)>
Set bitrate expressed in bits/s for ABR. B<oggenc> B<-b> is
expressed in kilobits/s.
=item B<q (>I<-q>B<)>
Set constant quality setting for VBR. The value should be a float
number in the range of -1.0 to 10.0. The higher the value, the better
the quality. The default value is B<3.0>.
This option is valid only using the B<ffmpeg> command-line tool.
For library interface users, use B<global_quality>.
=item B<cutoff (>I<--advanced-encode-option lowpass_frequency=N>B<)>
Set cutoff bandwidth in Hz, a value of 0 disables cutoff. B<oggenc>'s
related option is expressed in kHz. The default value is B<0> (cutoff
disabled).
=item B<minrate (>I<-m>B<)>
Set minimum bitrate expressed in bits/s. B<oggenc> B<-m> is
expressed in kilobits/s.
=item B<maxrate (>I<-M>B<)>
Set maximum bitrate expressed in bits/s. B<oggenc> B<-M> is
expressed in kilobits/s. This only has effect on ABR mode.
=item B<iblock (>I<--advanced-encode-option impulse_noisetune=N>B<)>
Set noise floor bias for impulse blocks. The value is a float number from
-15.0 to 0.0. A negative bias instructs the encoder to pay special attention
to the crispness of transients in the encoded audio. The tradeoff for better
transient response is a higher bitrate.
=back
=head2 libwavpack
A wrapper providing WavPack encoding through libwavpack.
Only lossless mode using 32-bit integer samples is supported currently.
The B<compression_level> option can be used to control speed vs.
compression tradeoff, with the values mapped to libwavpack as follows:
=over 4
=item B<0>
Fast mode - corresponding to the wavpack B<-f> option.
=item B<1>
Normal (default) settings.
=item B<2>
High quality - corresponding to the wavpack B<-h> option.
=item B<3>
Very high quality - corresponding to the wavpack B<-hh> option.
=item B<4-8>
Same as 3, but with extra processing enabled - corresponding to the wavpack
B<-x> option. I.e. 4 is the same as B<-x2> and 8 is the same as
B<-x6>.
=back
=head1 VIDEO ENCODERS
A description of some of the currently available video encoders
follows.
=head2 libtheora
Theora format supported through libtheora.
Requires the presence of the libtheora headers and library during
configuration. You need to explicitly configure the build with
C<--enable-libtheora>.
=head3 Options
The following global options are mapped to internal libtheora options
which affect the quality and the bitrate of the encoded stream.
=over 4
=item B<b>
Set the video bitrate, only works if the C<qscale> flag in
B<flags> is not enabled.
=item B<flags>
Used to enable constant quality mode encoding through the
B<qscale> flag, and to enable the C<pass1> and C<pass2>
modes.
=item B<g>
Set the GOP size.
=item B<global_quality>
Set the global quality in lambda units, only works if the
C<qscale> flag in B<flags> is enabled. The value is clipped
in the [0 - 10*C<FF_QP2LAMBDA>] range, and then multiplied for 6.3
to get a value in the native libtheora range [0-63]. A higher value
corresponds to a higher quality.
For example, to set maximum constant quality encoding with
B<ffmpeg>:
ffmpeg -i INPUT -flags:v qscale -global_quality:v "10*QP2LAMBDA" -codec:v libtheora OUTPUT.ogg
=back
=head2 libvpx
VP8 format supported through libvpx.
Requires the presence of the libvpx headers and library during configuration.
You need to explicitly configure the build with C<--enable-libvpx>.
=head3 Options
Mapping from FFmpeg to libvpx options with conversion notes in parentheses.
=over 4
=item B<threads>
g_threads
=item B<profile>
g_profile
=item B<vb>
rc_target_bitrate
=item B<g>
kf_max_dist
=item B<keyint_min>
kf_min_dist
=item B<qmin>
rc_min_quantizer
=item B<qmax>
rc_max_quantizer
=item B<bufsize, vb>
rc_buf_sz
C<(bufsize * 1000 / vb)>
rc_buf_optimal_sz
C<(bufsize * 1000 / vb * 5 / 6)>
=item B<rc_init_occupancy, vb>
rc_buf_initial_sz
C<(rc_init_occupancy * 1000 / vb)>
=item B<rc_buffer_aggressivity>
rc_undershoot_pct
=item B<skip_threshold>
rc_dropframe_thresh
=item B<qcomp>
rc_2pass_vbr_bias_pct
=item B<maxrate, vb>
rc_2pass_vbr_maxsection_pct
C<(maxrate * 100 / vb)>
=item B<minrate, vb>
rc_2pass_vbr_minsection_pct
C<(minrate * 100 / vb)>
=item B<minrate, maxrate, vb>
C<VPX_CBR>
C<(minrate == maxrate == vb)>
=item B<crf>
C<VPX_CQ>, C<VP8E_SET_CQ_LEVEL>
=item B<quality>
=over 4
=item I<best>
C<VPX_DL_BEST_QUALITY>
=item I<good>
C<VPX_DL_GOOD_QUALITY>
=item I<realtime>
C<VPX_DL_REALTIME>
=back
=item B<speed>
C<VP8E_SET_CPUUSED>
=item B<nr>
C<VP8E_SET_NOISE_SENSITIVITY>
=item B<mb_threshold>
C<VP8E_SET_STATIC_THRESHOLD>
=item B<slices>
C<VP8E_SET_TOKEN_PARTITIONS>
=item B<max-intra-rate>
C<VP8E_SET_MAX_INTRA_BITRATE_PCT>
=item B<force_key_frames>
C<VPX_EFLAG_FORCE_KF>
=item B<Alternate reference frame related>
=over 4
=item B<vp8flags altref>
C<VP8E_SET_ENABLEAUTOALTREF>
=item I<arnr_max_frames>
C<VP8E_SET_ARNR_MAXFRAMES>
=item I<arnr_type>
C<VP8E_SET_ARNR_TYPE>
=item I<arnr_strength>
C<VP8E_SET_ARNR_STRENGTH>
=item I<rc_lookahead>
g_lag_in_frames
=back
=item B<vp8flags error_resilient>
g_error_resilient
=back
For more information about libvpx see:
E<lt>B<http://www.webmproject.org/>E<gt>
=head2 libx264
x264 H.264/MPEG-4 AVC encoder wrapper.
This encoder requires the presence of the libx264 headers and library
during configuration. You need to explicitly configure the build with
C<--enable-libx264>.
libx264 supports an impressive number of features, including 8x8 and
4x4 adaptive spatial transform, adaptive B-frame placement, CAVLC/CABAC
entropy coding, interlacing (MBAFF), lossless mode, psy optimizations
for detail retention (adaptive quantization, psy-RD, psy-trellis).
Many libx264 encoder options are mapped to FFmpeg global codec
options, while unique encoder options are provided through private
options. Additionally the B<x264opts> and B<x264-params>
private options allows to pass a list of key=value tuples as accepted
by the libx264 C<x264_param_parse> function.
The x264 project website is at
E<lt>B<http://www.videolan.org/developers/x264.html>E<gt>.
=head3 Options
The following options are supported by the libx264 wrapper. The
B<x264>-equivalent options or values are listed in parentheses
for easy migration.
To reduce the duplication of documentation, only the private options
and some others requiring special attention are documented here. For
the documentation of the undocumented generic options, see
the Codec Options chapter.
To get a more accurate and extensive documentation of the libx264
options, invoke the command B<x264 --full-help> or consult
the libx264 documentation.
=over 4
=item B<b (>I<bitrate>B<)>
Set bitrate in bits/s. Note that FFmpeg's B<b> option is
expressed in bits/s, while B<x264>'s B<bitrate> is in
kilobits/s.
=item B<bf (>I<bframes>B<)>
=item B<g (>I<keyint>B<)>
=item B<qmax (>I<qpmax>B<)>
=item B<qmin (>I<qpmin>B<)>
=item B<qdiff (>I<qpstep>B<)>
=item B<qblur (>I<qblur>B<)>
=item B<qcomp (>I<qcomp>B<)>
=item B<refs (>I<ref>B<)>
=item B<sc_threshold (>I<scenecut>B<)>
=item B<trellis (>I<trellis>B<)>
=item B<nr (>I<nr>B<)>
=item B<me_range (>I<merange>B<)>
=item B<me_method (>I<me>B<)>
Set motion estimation method. Possible values in the decreasing order
of speed:
=over 4
=item B<dia (>I<dia>B<)>
=item B<epzs (>I<dia>B<)>
Diamond search with radius 1 (fastest). B<epzs> is an alias for
B<dia>.
=item B<hex (>I<hex>B<)>
Hexagonal search with radius 2.
=item B<umh (>I<umh>B<)>
Uneven multi-hexagon search.
=item B<esa (>I<esa>B<)>
Exhaustive search.
=item B<tesa (>I<tesa>B<)>
Hadamard exhaustive search (slowest).
=back
=item B<subq (>I<subme>B<)>
=item B<b_strategy (>I<b-adapt>B<)>
=item B<keyint_min (>I<min-keyint>B<)>
=item B<coder>
Set entropy encoder. Possible values:
=over 4
=item B<ac>
Enable CABAC.
=item B<vlc>
Enable CAVLC and disable CABAC. It generates the same effect as
B<x264>'s B<--no-cabac> option.
=back
=item B<cmp>
Set full pixel motion estimation comparation algorithm. Possible values:
=over 4
=item B<chroma>
Enable chroma in motion estimation.
=item B<sad>
Ignore chroma in motion estimation. It generates the same effect as
B<x264>'s B<--no-chroma-me> option.
=back
=item B<threads (>I<threads>B<)>
=item B<thread_type>
Set multithreading technique. Possible values:
=over 4
=item B<slice>
Slice-based multithreading. It generates the same effect as
B<x264>'s B<--sliced-threads> option.
=item B<frame>
Frame-based multithreading.
=back
=item B<flags>
Set encoding flags. It can be used to disable closed GOP and enable
open GOP by setting it to C<-cgop>. The result is similar to
the behavior of B<x264>'s B<--open-gop> option.
=item B<rc_init_occupancy (>I<vbv-init>B<)>
=item B<preset (>I<preset>B<)>
Set the encoding preset.
=item B<tune (>I<tune>B<)>
Set tuning of the encoding params.
=item B<profile (>I<profile>B<)>
Set profile restrictions.
=item B<fastfirstpass>
Enable fast settings when encoding first pass, when set to 1. When set
to 0, it has the same effect of B<x264>'s
B<--slow-firstpass> option.
=item B<crf (>I<crf>B<)>
Set the quality for constant quality mode.
=item B<crf_max (>I<crf-max>B<)>
In CRF mode, prevents VBV from lowering quality beyond this point.
=item B<qp (>I<qp>B<)>
Set constant quantization rate control method parameter.
=item B<aq-mode (>I<aq-mode>B<)>
Set AQ method. Possible values:
=over 4
=item B<none (>I<0>B<)>
Disabled.
=item B<variance (>I<1>B<)>
Variance AQ (complexity mask).
=item B<autovariance (>I<2>B<)>
Auto-variance AQ (experimental).
=back
=item B<aq-strength (>I<aq-strength>B<)>
Set AQ strength, reduce blocking and blurring in flat and textured areas.
=item B<psy>
Use psychovisual optimizations when set to 1. When set to 0, it has the
same effect as B<x264>'s B<--no-psy> option.
=item B<psy-rd (>I<psy-rd>B<)>
Set strength of psychovisual optimization, in
I<psy-rd>:I<psy-trellis> format.
=item B<rc-lookahead (>I<rc-lookahead>B<)>
Set number of frames to look ahead for frametype and ratecontrol.
=item B<weightb>
Enable weighted prediction for B-frames when set to 1. When set to 0,
it has the same effect as B<x264>'s B<--no-weightb> option.
=item B<weightp (>I<weightp>B<)>
Set weighted prediction method for P-frames. Possible values:
=over 4
=item B<none (>I<0>B<)>
Disabled
=item B<simple (>I<1>B<)>
Enable only weighted refs
=item B<smart (>I<2>B<)>
Enable both weighted refs and duplicates
=back
=item B<ssim (>I<ssim>B<)>
Enable calculation and printing SSIM stats after the encoding.
=item B<intra-refresh (>I<intra-refresh>B<)>
Enable the use of Periodic Intra Refresh instead of IDR frames when set
to 1.
=item B<bluray-compat (>I<bluray-compat>B<)>
Configure the encoder to be compatible with the bluray standard.
It is a shorthand for setting "bluray-compat=1 force-cfr=1".
=item B<b-bias (>I<b-bias>B<)>
Set the influence on how often B-frames are used.
=item B<b-pyramid (>I<b-pyramid>B<)>
Set method for keeping of some B-frames as references. Possible values:
=over 4
=item B<none (>I<none>B<)>
Disabled.
=item B<strict (>I<strict>B<)>
Strictly hierarchical pyramid.
=item B<normal (>I<normal>B<)>
Non-strict (not Blu-ray compatible).
=back
=item B<mixed-refs>
Enable the use of one reference per partition, as opposed to one
reference per macroblock when set to 1. When set to 0, it has the
same effect as B<x264>'s B<--no-mixed-refs> option.
=item B<8x8dct>
Enable adaptive spatial transform (high profile 8x8 transform)
when set to 1. When set to 0, it has the same effect as
B<x264>'s B<--no-8x8dct> option.
=item B<fast-pskip>
Enable early SKIP detection on P-frames when set to 1. When set
to 0, it has the same effect as B<x264>'s
B<--no-fast-pskip> option.
=item B<aud (>I<aud>B<)>
Enable use of access unit delimiters when set to 1.
=item B<mbtree>
Enable use macroblock tree ratecontrol when set to 1. When set
to 0, it has the same effect as B<x264>'s
B<--no-mbtree> option.
=item B<deblock (>I<deblock>B<)>
Set loop filter parameters, in I<alpha>:I<beta> form.
=item B<cplxblur (>I<cplxblur>B<)>
Set fluctuations reduction in QP (before curve compression).
=item B<partitions (>I<partitions>B<)>
Set partitions to consider as a comma-separated list of. Possible
values in the list:
=over 4
=item B<p8x8>
8x8 P-frame partition.
=item B<p4x4>
4x4 P-frame partition.
=item B<b8x8>
4x4 B-frame partition.
=item B<i8x8>
8x8 I-frame partition.
=item B<i4x4>
4x4 I-frame partition.
(Enabling B<p4x4> requires B<p8x8> to be enabled. Enabling
B<i8x8> requires adaptive spatial transform (B<8x8dct>
option) to be enabled.)
=item B<none (>I<none>B<)>
Do not consider any partitions.
=item B<all (>I<all>B<)>
Consider every partition.
=back
=item B<direct-pred (>I<direct>B<)>
Set direct MV prediction mode. Possible values:
=over 4
=item B<none (>I<none>B<)>
Disable MV prediction.
=item B<spatial (>I<spatial>B<)>
Enable spatial predicting.
=item B<temporal (>I<temporal>B<)>
Enable temporal predicting.
=item B<auto (>I<auto>B<)>
Automatically decided.
=back
=item B<slice-max-size (>I<slice-max-size>B<)>
Set the limit of the size of each slice in bytes. If not specified
but RTP payload size (B<ps>) is specified, that is used.
=item B<stats (>I<stats>B<)>
Set the file name for multi-pass stats.
=item B<nal-hrd (>I<nal-hrd>B<)>
Set signal HRD information (requires B<vbv-bufsize> to be set).
Possible values:
=over 4
=item B<none (>I<none>B<)>
Disable HRD information signaling.
=item B<vbr (>I<vbr>B<)>
Variable bit rate.
=item B<cbr (>I<cbr>B<)>
Constant bit rate (not allowed in MP4 container).
=back
=item B<x264opts (N.A.)>
Set any x264 option, see B<x264 --fullhelp> for a list.
Argument is a list of I<key>=I<value> couples separated by
":". In I<filter> and I<psy-rd> options that use ":" as a separator
themselves, use "," instead. They accept it as well since long ago but this
is kept undocumented for some reason.
For example to specify libx264 encoding options with B<ffmpeg>:
ffmpeg -i foo.mpg -vcodec libx264 -x264opts keyint=123:min-keyint=20 -an out.mkv
=item B<x264-params (N.A.)>
Override the x264 configuration using a :-separated list of key=value
parameters.
This option is functionally the same as the B<x264opts>, but is
duplicated for compability with the Libav fork.
For example to specify libx264 encoding options with B<ffmpeg>:
ffmpeg -i INPUT -c:v libx264 -x264-params level=30:bframes=0:weightp=0:\
cabac=0:ref=1:vbv-maxrate=768:vbv-bufsize=2000:analyse=all:me=umh:\
no-fast-pskip=1:subq=6:8x8dct=0:trellis=0 OUTPUT
=back
Encoding ffpresets for common usages are provided so they can be used with the
general presets system (e.g. passing the B<pre> option).
=head2 libxvid
Xvid MPEG-4 Part 2 encoder wrapper.
This encoder requires the presence of the libxvidcore headers and library
during configuration. You need to explicitly configure the build with
C<--enable-libxvid --enable-gpl>.
The native C<mpeg4> encoder supports the MPEG-4 Part 2 format, so
users can encode to this format without this library.
=head3 Options
The following options are supported by the libxvid wrapper. Some of
the following options are listed but are not documented, and
correspond to shared codec options. See the Codec
Options chapter for their documentation. The other shared options
which are not listed have no effect for the libxvid encoder.
=over 4
=item B<b>
=item B<g>
=item B<qmin>
=item B<qmax>
=item B<mpeg_quant>
=item B<threads>
=item B<bf>
=item B<b_qfactor>
=item B<b_qoffset>
=item B<flags>
Set specific encoding flags. Possible values:
=over 4
=item B<mv4>
Use four motion vector by macroblock.
=item B<aic>
Enable high quality AC prediction.
=item B<gray>
Only encode grayscale.
=item B<gmc>
Enable the use of global motion compensation (GMC).
=item B<qpel>
Enable quarter-pixel motion compensation.
=item B<cgop>
Enable closed GOP.
=item B<global_header>
Place global headers in extradata instead of every keyframe.
=back
=item B<trellis>
=item B<me_method>
Set motion estimation method. Possible values in decreasing order of
speed and increasing order of quality:
=over 4
=item B<zero>
Use no motion estimation (default).
=item B<phods>
=item B<x1>
=item B<log>
Enable advanced diamond zonal search for 16x16 blocks and half-pixel
refinement for 16x16 blocks. B<x1> and B<log> are aliases for
B<phods>.
=item B<epzs>
Enable all of the things described above, plus advanced diamond zonal
search for 8x8 blocks, half-pixel refinement for 8x8 blocks, and motion
estimation on chroma planes.
=item B<full>
Enable all of the things described above, plus extended 16x16 and 8x8
blocks search.
=back
=item B<mbd>
Set macroblock decision algorithm. Possible values in the increasing
order of quality:
=over 4
=item B<simple>
Use macroblock comparing function algorithm (default).
=item B<bits>
Enable rate distortion-based half pixel and quarter pixel refinement for
16x16 blocks.
=item B<rd>
Enable all of the things described above, plus rate distortion-based
half pixel and quarter pixel refinement for 8x8 blocks, and rate
distortion-based search using square pattern.
=back
=item B<lumi_aq>
Enable lumi masking adaptive quantization when set to 1. Default is 0
(disabled).
=item B<variance_aq>
Enable variance adaptive quantization when set to 1. Default is 0
(disabled).
When combined with B<lumi_aq>, the resulting quality will not
be better than any of the two specified individually. In other
words, the resulting quality will be the worse one of the two
effects.
=item B<ssim>
Set structural similarity (SSIM) displaying method. Possible values:
=over 4
=item B<off>
Disable displaying of SSIM information.
=item B<avg>
Output average SSIM at the end of encoding to stdout. The format of
showing the average SSIM is:
Average SSIM: %f
For users who are not familiar with C, %f means a float number, or
a decimal (e.g. 0.939232).
=item B<frame>
Output both per-frame SSIM data during encoding and average SSIM at
the end of encoding to stdout. The format of per-frame information
is:
SSIM: avg: %1.3f min: %1.3f max: %1.3f
For users who are not familiar with C, %1.3f means a float number
rounded to 3 digits after the dot (e.g. 0.932).
=back
=item B<ssim_acc>
Set SSIM accuracy. Valid options are integers within the range of
0-4, while 0 gives the most accurate result and 4 computes the
fastest.
=back
=head2 png
PNG image encoder.
=head3 Private options
=over 4
=item B<dpi> I<integer>
Set physical density of pixels, in dots per inch, unset by default
=item B<dpm> I<integer>
Set physical density of pixels, in dots per meter, unset by default
=back
=head2 ProRes
Apple ProRes encoder.
FFmpeg contains 2 ProRes encoders, the prores-aw and prores-ks encoder.
The used encoder can be choosen with the C<-vcodec> option.
=head3 Private Options for prores-ks
=over 4
=item B<profile> I<integer>
Select the ProRes profile to encode
=over 4
=item B<proxy>
=item B<lt>
=item B<standard>
=item B<hq>
=item B<4444>
=back
=item B<quant_mat> I<integer>
Select quantization matrix.
=over 4
=item B<auto>
=item B<default>
=item B<proxy>
=item B<lt>
=item B<standard>
=item B<hq>
=back
If set to I<auto>, the matrix matching the profile will be picked.
If not set, the matrix providing the highest quality, I<default>, will be
picked.
=item B<bits_per_mb> I<integer>
How many bits to allot for coding one macroblock. Different profiles use
between 200 and 2400 bits per macroblock, the maximum is 8000.
=item B<mbs_per_slice> I<integer>
Number of macroblocks in each slice (1-8); the default value (8)
should be good in almost all situations.
=item B<vendor> I<string>
Override the 4-byte vendor ID.
A custom vendor ID like I<apl0> would claim the stream was produced by
the Apple encoder.
=item B<alpha_bits> I<integer>
Specify number of bits for alpha component.
Possible values are I<0>, I<8> and I<16>.
Use I<0> to disable alpha plane coding.
=back
=head3 Speed considerations
In the default mode of operation the encoder has to honor frame constraints
(i.e. not produc frames with size bigger than requested) while still making
output picture as good as possible.
A frame containing a lot of small details is harder to compress and the encoder
would spend more time searching for appropriate quantizers for each slice.
Setting a higher B<bits_per_mb> limit will improve the speed.
For the fastest encoding speed set the B<qscale> parameter (4 is the
recommended value) and do not set a size constraint.
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-codecs.texi
0,0 → 1,42
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Codecs Documentation
@titlepage
@center @titlefont{FFmpeg Codecs Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes the codecs (decoders and encoders) provided by
the libavcodec library.
@c man end DESCRIPTION
@include codecs.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavcodec.html,libavcodec}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavcodec(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-codecs
@settitle FFmpeg codecs
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-devices.pod
0,0 → 1,1474
=head1 NAME
ffmpeg-devices - FFmpeg devices
=head1 DESCRIPTION
This document describes the input and output devices provided by the
libavdevice library.
=head1 DEVICE OPTIONS
The libavdevice library provides the same interface as
libavformat. Namely, an input device is considered like a demuxer, and
an output device like a muxer, and the interface and generic device
options are the same provided by libavformat (see the ffmpeg-formats
manual).
In addition each input or output device may support so-called private
options, which are specific for that component.
Options may be set by specifying -I<option> I<value> in the
FFmpeg tools, or by setting the value explicitly in the device
C<AVFormatContext> options or using the F<libavutil/opt.h> API
for programmatic use.
=head1 INPUT DEVICES
Input devices are configured elements in FFmpeg which allow to access
the data coming from a multimedia device attached to your system.
When you configure your FFmpeg build, all the supported input devices
are enabled by default. You can list all available ones using the
configure option "--list-indevs".
You can disable all the input devices using the configure option
"--disable-indevs", and selectively enable an input device using the
option "--enable-indev=I<INDEV>", or you can disable a particular
input device using the option "--disable-indev=I<INDEV>".
The option "-formats" of the ff* tools will display the list of
supported input devices (amongst the demuxers).
A description of the currently available input devices follows.
=head2 alsa
ALSA (Advanced Linux Sound Architecture) input device.
To enable this input device during configuration you need libasound
installed on your system.
This device allows capturing from an ALSA device. The name of the
device to capture has to be an ALSA card identifier.
An ALSA identifier has the syntax:
hw:<CARD>[,<DEV>[,<SUBDEV>]]
where the I<DEV> and I<SUBDEV> components are optional.
The three arguments (in order: I<CARD>,I<DEV>,I<SUBDEV>)
specify card number or identifier, device number and subdevice number
(-1 means any).
To see the list of cards currently recognized by your system check the
files F</proc/asound/cards> and F</proc/asound/devices>.
For example to capture with B<ffmpeg> from an ALSA device with
card id 0, you may run the command:
ffmpeg -f alsa -i hw:0 alsaout.wav
For more information see:
E<lt>B<http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html>E<gt>
=head2 bktr
BSD video input device.
=head2 dshow
Windows DirectShow input device.
DirectShow support is enabled when FFmpeg is built with the mingw-w64 project.
Currently only audio and video devices are supported.
Multiple devices may be opened as separate inputs, but they may also be
opened on the same input, which should improve synchronism between them.
The input name should be in the format:
<TYPE>=<NAME>[:<TYPE>=<NAME>]
where I<TYPE> can be either I<audio> or I<video>,
and I<NAME> is the device's name.
=head3 Options
If no options are specified, the device's defaults are used.
If the device does not support the requested options, it will
fail to open.
=over 4
=item B<video_size>
Set the video size in the captured video.
=item B<framerate>
Set the frame rate in the captured video.
=item B<sample_rate>
Set the sample rate (in Hz) of the captured audio.
=item B<sample_size>
Set the sample size (in bits) of the captured audio.
=item B<channels>
Set the number of channels in the captured audio.
=item B<list_devices>
If set to B<true>, print a list of devices and exit.
=item B<list_options>
If set to B<true>, print a list of selected device's options
and exit.
=item B<video_device_number>
Set video device number for devices with same name (starts at 0,
defaults to 0).
=item B<audio_device_number>
Set audio device number for devices with same name (starts at 0,
defaults to 0).
=item B<pixel_format>
Select pixel format to be used by DirectShow. This may only be set when
the video codec is not set or set to rawvideo.
=item B<audio_buffer_size>
Set audio device buffer size in milliseconds (which can directly
impact latency, depending on the device).
Defaults to using the audio device's
default buffer size (typically some multiple of 500ms).
Setting this value too low can degrade performance.
See also
E<lt>B<http://msdn.microsoft.com/en-us/library/windows/desktop/dd377582(v=vs.85).aspx>E<gt>
=back
=head3 Examples
=over 4
=item *
Print the list of DirectShow supported devices and exit:
$ ffmpeg -list_devices true -f dshow -i dummy
=item *
Open video device I<Camera>:
$ ffmpeg -f dshow -i video="Camera"
=item *
Open second video device with name I<Camera>:
$ ffmpeg -f dshow -video_device_number 1 -i video="Camera"
=item *
Open video device I<Camera> and audio device I<Microphone>:
$ ffmpeg -f dshow -i video="Camera":audio="Microphone"
=item *
Print the list of supported options in selected device and exit:
$ ffmpeg -list_options true -f dshow -i video="Camera"
=back
=head2 dv1394
Linux DV 1394 input device.
=head2 fbdev
Linux framebuffer input device.
The Linux framebuffer is a graphic hardware-independent abstraction
layer to show graphics on a computer monitor, typically on the
console. It is accessed through a file device node, usually
F</dev/fb0>.
For more detailed information read the file
Documentation/fb/framebuffer.txt included in the Linux source tree.
To record from the framebuffer device F</dev/fb0> with
B<ffmpeg>:
ffmpeg -f fbdev -r 10 -i /dev/fb0 out.avi
You can take a single screenshot image with the command:
ffmpeg -f fbdev -frames:v 1 -r 1 -i /dev/fb0 screenshot.jpeg
See also E<lt>B<http://linux-fbdev.sourceforge.net/>E<gt>, and fbset(1).
=head2 iec61883
FireWire DV/HDV input device using libiec61883.
To enable this input device, you need libiec61883, libraw1394 and
libavc1394 installed on your system. Use the configure option
C<--enable-libiec61883> to compile with the device enabled.
The iec61883 capture device supports capturing from a video device
connected via IEEE1394 (FireWire), using libiec61883 and the new Linux
FireWire stack (juju). This is the default DV/HDV input method in Linux
Kernel 2.6.37 and later, since the old FireWire stack was removed.
Specify the FireWire port to be used as input file, or "auto"
to choose the first port connected.
=head3 Options
=over 4
=item B<dvtype>
Override autodetection of DV/HDV. This should only be used if auto
detection does not work, or if usage of a different device type
should be prohibited. Treating a DV device as HDV (or vice versa) will
not work and result in undefined behavior.
The values B<auto>, B<dv> and B<hdv> are supported.
=item B<dvbuffer>
Set maxiumum size of buffer for incoming data, in frames. For DV, this
is an exact value. For HDV, it is not frame exact, since HDV does
not have a fixed frame size.
=item B<dvguid>
Select the capture device by specifying it's GUID. Capturing will only
be performed from the specified device and fails if no device with the
given GUID is found. This is useful to select the input if multiple
devices are connected at the same time.
Look at /sys/bus/firewire/devices to find out the GUIDs.
=back
=head3 Examples
=over 4
=item *
Grab and show the input of a FireWire DV/HDV device.
ffplay -f iec61883 -i auto
=item *
Grab and record the input of a FireWire DV/HDV device,
using a packet buffer of 100000 packets if the source is HDV.
ffmpeg -f iec61883 -i auto -hdvbuffer 100000 out.mpg
=back
=head2 jack
JACK input device.
To enable this input device during configuration you need libjack
installed on your system.
A JACK input device creates one or more JACK writable clients, one for
each audio channel, with name I<client_name>:input_I<N>, where
I<client_name> is the name provided by the application, and I<N>
is a number which identifies the channel.
Each writable client will send the acquired data to the FFmpeg input
device.
Once you have created one or more JACK readable clients, you need to
connect them to one or more JACK writable clients.
To connect or disconnect JACK clients you can use the B<jack_connect>
and B<jack_disconnect> programs, or do it through a graphical interface,
for example with B<qjackctl>.
To list the JACK clients and their properties you can invoke the command
B<jack_lsp>.
Follows an example which shows how to capture a JACK readable client
with B<ffmpeg>.
# Create a JACK writable client with name "ffmpeg".
$ ffmpeg -f jack -i ffmpeg -y out.wav
# Start the sample jack_metro readable client.
$ jack_metro -b 120 -d 0.2 -f 4000
# List the current JACK clients.
$ jack_lsp -c
system:capture_1
system:capture_2
system:playback_1
system:playback_2
ffmpeg:input_1
metro:120_bpm
# Connect metro to the ffmpeg writable client.
$ jack_connect metro:120_bpm ffmpeg:input_1
For more information read:
E<lt>B<http://jackaudio.org/>E<gt>
=head2 lavfi
Libavfilter input virtual device.
This input device reads data from the open output pads of a libavfilter
filtergraph.
For each filtergraph open output, the input device will create a
corresponding stream which is mapped to the generated output. Currently
only video data is supported. The filtergraph is specified through the
option B<graph>.
=head3 Options
=over 4
=item B<graph>
Specify the filtergraph to use as input. Each video open output must be
labelled by a unique string of the form "outI<N>", where I<N> is a
number starting from 0 corresponding to the mapped input stream
generated by the device.
The first unlabelled output is automatically assigned to the "out0"
label, but all the others need to be specified explicitly.
If not specified defaults to the filename specified for the input
device.
=item B<graph_file>
Set the filename of the filtergraph to be read and sent to the other
filters. Syntax of the filtergraph is the same as the one specified by
the option I<graph>.
=back
=head3 Examples
=over 4
=item *
Create a color video stream and play it back with B<ffplay>:
ffplay -f lavfi -graph "color=c=pink [out0]" dummy
=item *
As the previous example, but use filename for specifying the graph
description, and omit the "out0" label:
ffplay -f lavfi color=c=pink
=item *
Create three different video test filtered sources and play them:
ffplay -f lavfi -graph "testsrc [out0]; testsrc,hflip [out1]; testsrc,negate [out2]" test3
=item *
Read an audio stream from a file using the amovie source and play it
back with B<ffplay>:
ffplay -f lavfi "amovie=test.wav"
=item *
Read an audio stream and a video stream and play it back with
B<ffplay>:
ffplay -f lavfi "movie=test.avi[out0];amovie=test.wav[out1]"
=back
=head2 libdc1394
IIDC1394 input device, based on libdc1394 and libraw1394.
=head2 openal
The OpenAL input device provides audio capture on all systems with a
working OpenAL 1.1 implementation.
To enable this input device during configuration, you need OpenAL
headers and libraries installed on your system, and need to configure
FFmpeg with C<--enable-openal>.
OpenAL headers and libraries should be provided as part of your OpenAL
implementation, or as an additional download (an SDK). Depending on your
installation you may need to specify additional flags via the
C<--extra-cflags> and C<--extra-ldflags> for allowing the build
system to locate the OpenAL headers and libraries.
An incomplete list of OpenAL implementations follows:
=over 4
=item B<Creative>
The official Windows implementation, providing hardware acceleration
with supported devices and software fallback.
See E<lt>B<http://openal.org/>E<gt>.
=item B<OpenAL Soft>
Portable, open source (LGPL) software implementation. Includes
backends for the most common sound APIs on the Windows, Linux,
Solaris, and BSD operating systems.
See E<lt>B<http://kcat.strangesoft.net/openal.html>E<gt>.
=item B<Apple>
OpenAL is part of Core Audio, the official Mac OS X Audio interface.
See E<lt>B<http://developer.apple.com/technologies/mac/audio-and-video.html>E<gt>
=back
This device allows to capture from an audio input device handled
through OpenAL.
You need to specify the name of the device to capture in the provided
filename. If the empty string is provided, the device will
automatically select the default device. You can get the list of the
supported devices by using the option I<list_devices>.
=head3 Options
=over 4
=item B<channels>
Set the number of channels in the captured audio. Only the values
B<1> (monaural) and B<2> (stereo) are currently supported.
Defaults to B<2>.
=item B<sample_size>
Set the sample size (in bits) of the captured audio. Only the values
B<8> and B<16> are currently supported. Defaults to
B<16>.
=item B<sample_rate>
Set the sample rate (in Hz) of the captured audio.
Defaults to B<44.1k>.
=item B<list_devices>
If set to B<true>, print a list of devices and exit.
Defaults to B<false>.
=back
=head3 Examples
Print the list of OpenAL supported devices and exit:
$ ffmpeg -list_devices true -f openal -i dummy out.ogg
Capture from the OpenAL device F<DR-BT101 via PulseAudio>:
$ ffmpeg -f openal -i 'DR-BT101 via PulseAudio' out.ogg
Capture from the default device (note the empty string '' as filename):
$ ffmpeg -f openal -i '' out.ogg
Capture from two devices simultaneously, writing to two different files,
within the same B<ffmpeg> command:
$ ffmpeg -f openal -i 'DR-BT101 via PulseAudio' out1.ogg -f openal -i 'ALSA Default' out2.ogg
Note: not all OpenAL implementations support multiple simultaneous capture -
try the latest OpenAL Soft if the above does not work.
=head2 oss
Open Sound System input device.
The filename to provide to the input device is the device node
representing the OSS input device, and is usually set to
F</dev/dsp>.
For example to grab from F</dev/dsp> using B<ffmpeg> use the
command:
ffmpeg -f oss -i /dev/dsp /tmp/oss.wav
For more information about OSS see:
E<lt>B<http://manuals.opensound.com/usersguide/dsp.html>E<gt>
=head2 pulse
PulseAudio input device.
To enable this output device you need to configure FFmpeg with C<--enable-libpulse>.
The filename to provide to the input device is a source device or the
string "default"
To list the PulseAudio source devices and their properties you can invoke
the command B<pactl list sources>.
More information about PulseAudio can be found on E<lt>B<http://www.pulseaudio.org>E<gt>.
=head3 Options
=over 4
=item B<server>
Connect to a specific PulseAudio server, specified by an IP address.
Default server is used when not provided.
=item B<name>
Specify the application name PulseAudio will use when showing active clients,
by default it is the C<LIBAVFORMAT_IDENT> string.
=item B<stream_name>
Specify the stream name PulseAudio will use when showing active streams,
by default it is "record".
=item B<sample_rate>
Specify the samplerate in Hz, by default 48kHz is used.
=item B<channels>
Specify the channels in use, by default 2 (stereo) is set.
=item B<frame_size>
Specify the number of bytes per frame, by default it is set to 1024.
=item B<fragment_size>
Specify the minimal buffering fragment in PulseAudio, it will affect the
audio latency. By default it is unset.
=back
=head3 Examples
Record a stream from default device:
ffmpeg -f pulse -i default /tmp/pulse.wav
=head2 sndio
sndio input device.
To enable this input device during configuration you need libsndio
installed on your system.
The filename to provide to the input device is the device node
representing the sndio input device, and is usually set to
F</dev/audio0>.
For example to grab from F</dev/audio0> using B<ffmpeg> use the
command:
ffmpeg -f sndio -i /dev/audio0 /tmp/oss.wav
=head2 video4linux2, v4l2
Video4Linux2 input video device.
"v4l2" can be used as alias for "video4linux2".
If FFmpeg is built with v4l-utils support (by using the
C<--enable-libv4l2> configure option), it is possible to use it with the
C<-use_libv4l2> input device option.
The name of the device to grab is a file device node, usually Linux
systems tend to automatically create such nodes when the device
(e.g. an USB webcam) is plugged into the system, and has a name of the
kind F</dev/videoI<N>>, where I<N> is a number associated to
the device.
Video4Linux2 devices usually support a limited set of
I<width>xI<height> sizes and frame rates. You can check which are
supported using B<-list_formats all> for Video4Linux2 devices.
Some devices, like TV cards, support one or more standards. It is possible
to list all the supported standards using B<-list_standards all>.
The time base for the timestamps is 1 microsecond. Depending on the kernel
version and configuration, the timestamps may be derived from the real time
clock (origin at the Unix Epoch) or the monotonic clock (origin usually at
boot time, unaffected by NTP or manual changes to the clock). The
B<-timestamps abs> or B<-ts abs> option can be used to force
conversion into the real time clock.
Some usage examples of the video4linux2 device with B<ffmpeg>
and B<ffplay>:
=over 4
=item *
Grab and show the input of a video4linux2 device:
ffplay -f video4linux2 -framerate 30 -video_size hd720 /dev/video0
=item *
Grab and record the input of a video4linux2 device, leave the
frame rate and size as previously set:
ffmpeg -f video4linux2 -input_format mjpeg -i /dev/video0 out.mpeg
=back
For more information about Video4Linux, check E<lt>B<http://linuxtv.org/>E<gt>.
=head3 Options
=over 4
=item B<standard>
Set the standard. Must be the name of a supported standard. To get a
list of the supported standards, use the B<list_standards>
option.
=item B<channel>
Set the input channel number. Default to -1, which means using the
previously selected channel.
=item B<video_size>
Set the video frame size. The argument must be a string in the form
I<WIDTH>xI<HEIGHT> or a valid size abbreviation.
=item B<pixel_format>
Select the pixel format (only valid for raw video input).
=item B<input_format>
Set the preferred pixel format (for raw video) or a codec name.
This option allows to select the input format, when several are
available.
=item B<framerate>
Set the preferred video frame rate.
=item B<list_formats>
List available formats (supported pixel formats, codecs, and frame
sizes) and exit.
Available values are:
=over 4
=item B<all>
Show all available (compressed and non-compressed) formats.
=item B<raw>
Show only raw video (non-compressed) formats.
=item B<compressed>
Show only compressed formats.
=back
=item B<list_standards>
List supported standards and exit.
Available values are:
=over 4
=item B<all>
Show all supported standards.
=back
=item B<timestamps, ts>
Set type of timestamps for grabbed frames.
Available values are:
=over 4
=item B<default>
Use timestamps from the kernel.
=item B<abs>
Use absolute timestamps (wall clock).
=item B<mono2abs>
Force conversion from monotonic to absolute timestamps.
=back
Default value is C<default>.
=back
=head2 vfwcap
VfW (Video for Windows) capture input device.
The filename passed as input is the capture driver number, ranging from
0 to 9. You may use "list" as filename to print a list of drivers. Any
other filename will be interpreted as device number 0.
=head2 x11grab
X11 video input device.
This device allows to capture a region of an X11 display.
The filename passed as input has the syntax:
[<hostname>]:<display_number>.<screen_number>[+<x_offset>,<y_offset>]
I<hostname>:I<display_number>.I<screen_number> specifies the
X11 display name of the screen to grab from. I<hostname> can be
omitted, and defaults to "localhost". The environment variable
B<DISPLAY> contains the default display name.
I<x_offset> and I<y_offset> specify the offsets of the grabbed
area with respect to the top-left border of the X11 screen. They
default to 0.
Check the X11 documentation (e.g. man X) for more detailed information.
Use the B<dpyinfo> program for getting basic information about the
properties of your X11 display (e.g. grep for "name" or "dimensions").
For example to grab from F<:0.0> using B<ffmpeg>:
ffmpeg -f x11grab -framerate 25 -video_size cif -i :0.0 out.mpg
Grab at position C<10,20>:
ffmpeg -f x11grab -framerate 25 -video_size cif -i :0.0+10,20 out.mpg
=head3 Options
=over 4
=item B<draw_mouse>
Specify whether to draw the mouse pointer. A value of C<0> specify
not to draw the pointer. Default value is C<1>.
=item B<follow_mouse>
Make the grabbed area follow the mouse. The argument can be
C<centered> or a number of pixels I<PIXELS>.
When it is specified with "centered", the grabbing region follows the mouse
pointer and keeps the pointer at the center of region; otherwise, the region
follows only when the mouse pointer reaches within I<PIXELS> (greater than
zero) to the edge of region.
For example:
ffmpeg -f x11grab -follow_mouse centered -framerate 25 -video_size cif -i :0.0 out.mpg
To follow only when the mouse pointer reaches within 100 pixels to edge:
ffmpeg -f x11grab -follow_mouse 100 -framerate 25 -video_size cif -i :0.0 out.mpg
=item B<framerate>
Set the grabbing frame rate. Default value is C<ntsc>,
corresponding to a frame rate of C<30000/1001>.
=item B<show_region>
Show grabbed region on screen.
If I<show_region> is specified with C<1>, then the grabbing
region will be indicated on screen. With this option, it is easy to
know what is being grabbed if only a portion of the screen is grabbed.
For example:
ffmpeg -f x11grab -show_region 1 -framerate 25 -video_size cif -i :0.0+10,20 out.mpg
With I<follow_mouse>:
ffmpeg -f x11grab -follow_mouse centered -show_region 1 -framerate 25 -video_size cif -i :0.0 out.mpg
=item B<video_size>
Set the video frame size. Default value is C<vga>.
=back
=head1 OUTPUT DEVICES
Output devices are configured elements in FFmpeg that can write
multimedia data to an output device attached to your system.
When you configure your FFmpeg build, all the supported output devices
are enabled by default. You can list all available ones using the
configure option "--list-outdevs".
You can disable all the output devices using the configure option
"--disable-outdevs", and selectively enable an output device using the
option "--enable-outdev=I<OUTDEV>", or you can disable a particular
input device using the option "--disable-outdev=I<OUTDEV>".
The option "-formats" of the ff* tools will display the list of
enabled output devices (amongst the muxers).
A description of the currently available output devices follows.
=head2 alsa
ALSA (Advanced Linux Sound Architecture) output device.
=head2 caca
CACA output device.
This output device allows to show a video stream in CACA window.
Only one CACA window is allowed per application, so you can
have only one instance of this output device in an application.
To enable this output device you need to configure FFmpeg with
C<--enable-libcaca>.
libcaca is a graphics library that outputs text instead of pixels.
For more information about libcaca, check:
E<lt>B<http://caca.zoy.org/wiki/libcaca>E<gt>
=head3 Options
=over 4
=item B<window_title>
Set the CACA window title, if not specified default to the filename
specified for the output device.
=item B<window_size>
Set the CACA window size, can be a string of the form
I<width>xI<height> or a video size abbreviation.
If not specified it defaults to the size of the input video.
=item B<driver>
Set display driver.
=item B<algorithm>
Set dithering algorithm. Dithering is necessary
because the picture being rendered has usually far more colours than
the available palette.
The accepted values are listed with C<-list_dither algorithms>.
=item B<antialias>
Set antialias method. Antialiasing smoothens the rendered
image and avoids the commonly seen staircase effect.
The accepted values are listed with C<-list_dither antialiases>.
=item B<charset>
Set which characters are going to be used when rendering text.
The accepted values are listed with C<-list_dither charsets>.
=item B<color>
Set color to be used when rendering text.
The accepted values are listed with C<-list_dither colors>.
=item B<list_drivers>
If set to B<true>, print a list of available drivers and exit.
=item B<list_dither>
List available dither options related to the argument.
The argument must be one of C<algorithms>, C<antialiases>,
C<charsets>, C<colors>.
=back
=head3 Examples
=over 4
=item *
The following command shows the B<ffmpeg> output is an
CACA window, forcing its size to 80x25:
ffmpeg -i INPUT -vcodec rawvideo -pix_fmt rgb24 -window_size 80x25 -f caca -
=item *
Show the list of available drivers and exit:
ffmpeg -i INPUT -pix_fmt rgb24 -f caca -list_drivers true -
=item *
Show the list of available dither colors and exit:
ffmpeg -i INPUT -pix_fmt rgb24 -f caca -list_dither colors -
=back
=head2 fbdev
Linux framebuffer output device.
The Linux framebuffer is a graphic hardware-independent abstraction
layer to show graphics on a computer monitor, typically on the
console. It is accessed through a file device node, usually
F</dev/fb0>.
For more detailed information read the file
F<Documentation/fb/framebuffer.txt> included in the Linux source tree.
=head3 Options
=over 4
=item B<xoffset>
=item B<yoffset>
Set x/y coordinate of top left corner. Default is 0.
=back
=head3 Examples
Play a file on framebuffer device F</dev/fb0>.
Required pixel format depends on current framebuffer settings.
ffmpeg -re -i INPUT -vcodec rawvideo -pix_fmt bgra -f fbdev /dev/fb0
See also E<lt>B<http://linux-fbdev.sourceforge.net/>E<gt>, and fbset(1).
=head2 oss
OSS (Open Sound System) output device.
=head2 pulse
PulseAudio output device.
To enable this output device you need to configure FFmpeg with C<--enable-libpulse>.
More information about PulseAudio can be found on E<lt>B<http://www.pulseaudio.org>E<gt>
=head3 Options
=over 4
=item B<server>
Connect to a specific PulseAudio server, specified by an IP address.
Default server is used when not provided.
=item B<name>
Specify the application name PulseAudio will use when showing active clients,
by default it is the C<LIBAVFORMAT_IDENT> string.
=item B<stream_name>
Specify the stream name PulseAudio will use when showing active streams,
by default it is set to the specified output name.
=item B<device>
Specify the device to use. Default device is used when not provided.
List of output devices can be obtained with command B<pactl list sinks>.
=back
=head3 Examples
Play a file on default device on default server:
ffmpeg -i INPUT -f pulse "stream name"
=head2 sdl
SDL (Simple DirectMedia Layer) output device.
This output device allows to show a video stream in an SDL
window. Only one SDL window is allowed per application, so you can
have only one instance of this output device in an application.
To enable this output device you need libsdl installed on your system
when configuring your build.
For more information about SDL, check:
E<lt>B<http://www.libsdl.org/>E<gt>
=head3 Options
=over 4
=item B<window_title>
Set the SDL window title, if not specified default to the filename
specified for the output device.
=item B<icon_title>
Set the name of the iconified SDL window, if not specified it is set
to the same value of I<window_title>.
=item B<window_size>
Set the SDL window size, can be a string of the form
I<width>xI<height> or a video size abbreviation.
If not specified it defaults to the size of the input video,
downscaled according to the aspect ratio.
=item B<window_fullscreen>
Set fullscreen mode when non-zero value is provided.
Zero is a default.
=back
=head3 Examples
The following command shows the B<ffmpeg> output is an
SDL window, forcing its size to the qcif format:
ffmpeg -i INPUT -vcodec rawvideo -pix_fmt yuv420p -window_size qcif -f sdl "SDL output"
=head2 sndio
sndio audio output device.
=head2 xv
XV (XVideo) output device.
This output device allows to show a video stream in a X Window System
window.
=head3 Options
=over 4
=item B<display_name>
Specify the hardware display name, which determines the display and
communications domain to be used.
The display name or DISPLAY environment variable can be a string in
the format I<hostname>[:I<number>[.I<screen_number>]].
I<hostname> specifies the name of the host machine on which the
display is physically attached. I<number> specifies the number of
the display server on that host machine. I<screen_number> specifies
the screen to be used on that server.
If unspecified, it defaults to the value of the DISPLAY environment
variable.
For example, C<dual-headed:0.1> would specify screen 1 of display
0 on the machine named ``dual-headed''.
Check the X11 specification for more detailed information about the
display name format.
=item B<window_size>
Set the created window size, can be a string of the form
I<width>xI<height> or a video size abbreviation. If not
specified it defaults to the size of the input video.
=item B<window_x>
=item B<window_y>
Set the X and Y window offsets for the created window. They are both
set to 0 by default. The values may be ignored by the window manager.
=item B<window_title>
Set the window title, if not specified default to the filename
specified for the output device.
=back
For more information about XVideo see E<lt>B<http://www.x.org/>E<gt>.
=head3 Examples
=over 4
=item *
Decode, display and encode video input with B<ffmpeg> at the
same time:
ffmpeg -i INPUT OUTPUT -f xv display
=item *
Decode and display the input video to multiple X11 windows:
ffmpeg -i INPUT -f xv normal -vf negate -f xv negated
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavdevice(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

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\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Devices Documentation
@titlepage
@center @titlefont{FFmpeg Devices Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes the input and output devices provided by the
libavdevice library.
@c man end DESCRIPTION
@include devices.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavdevice.html,libavdevice}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavdevice(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-devices
@settitle FFmpeg devices
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-filters.texi
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\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Filters Documentation
@titlepage
@center @titlefont{FFmpeg Filters Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes filters, sources, and sinks provided by the
libavfilter library.
@c man end DESCRIPTION
@include filters.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavfilter.html,libavfilter}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavfilter(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-filters
@settitle FFmpeg filters
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-formats.pod
0,0 → 1,2131
=head1 NAME
ffmpeg-formats - FFmpeg formats
=head1 DESCRIPTION
This document describes the supported formats (muxers and demuxers)
provided by the libavformat library.
=head1 FORMAT OPTIONS
The libavformat library provides some generic global options, which
can be set on all the muxers and demuxers. In addition each muxer or
demuxer may support so-called private options, which are specific for
that component.
Options may be set by specifying -I<option> I<value> in the
FFmpeg tools, or by setting the value explicitly in the
C<AVFormatContext> options or using the F<libavutil/opt.h> API
for programmatic use.
The list of supported options follows:
=over 4
=item B<avioflags> I<flags> B<(>I<input/output>B<)>
Possible values:
=over 4
=item B<direct>
Reduce buffering.
=back
=item B<probesize> I<integer> B<(>I<input>B<)>
Set probing size in bytes, i.e. the size of the data to analyze to get
stream information. A higher value will allow to detect more
information in case it is dispersed into the stream, but will increase
latency. Must be an integer not lesser than 32. It is 5000000 by default.
=item B<packetsize> I<integer> B<(>I<output>B<)>
Set packet size.
=item B<fflags> I<flags> B<(>I<input/output>B<)>
Set format flags.
Possible values:
=over 4
=item B<ignidx>
Ignore index.
=item B<genpts>
Generate PTS.
=item B<nofillin>
Do not fill in missing values that can be exactly calculated.
=item B<noparse>
Disable AVParsers, this needs C<+nofillin> too.
=item B<igndts>
Ignore DTS.
=item B<discardcorrupt>
Discard corrupted frames.
=item B<sortdts>
Try to interleave output packets by DTS.
=item B<keepside>
Do not merge side data.
=item B<latm>
Enable RTP MP4A-LATM payload.
=item B<nobuffer>
Reduce the latency introduced by optional buffering
=back
=item B<seek2any> I<integer> B<(>I<input>B<)>
Allow seeking to non-keyframes on demuxer level when supported if set to 1.
Default is 0.
=item B<analyzeduration> I<integer> B<(>I<input>B<)>
Specify how many microseconds are analyzed to probe the input. A
higher value will allow to detect more accurate information, but will
increase latency. It defaults to 5,000,000 microseconds = 5 seconds.
=item B<cryptokey> I<hexadecimal string> B<(>I<input>B<)>
Set decryption key.
=item B<indexmem> I<integer> B<(>I<input>B<)>
Set max memory used for timestamp index (per stream).
=item B<rtbufsize> I<integer> B<(>I<input>B<)>
Set max memory used for buffering real-time frames.
=item B<fdebug> I<flags> B<(>I<input/output>B<)>
Print specific debug info.
Possible values:
=over 4
=item B<ts>
=back
=item B<max_delay> I<integer> B<(>I<input/output>B<)>
Set maximum muxing or demuxing delay in microseconds.
=item B<fpsprobesize> I<integer> B<(>I<input>B<)>
Set number of frames used to probe fps.
=item B<audio_preload> I<integer> B<(>I<output>B<)>
Set microseconds by which audio packets should be interleaved earlier.
=item B<chunk_duration> I<integer> B<(>I<output>B<)>
Set microseconds for each chunk.
=item B<chunk_size> I<integer> B<(>I<output>B<)>
Set size in bytes for each chunk.
=item B<err_detect, f_err_detect> I<flags> B<(>I<input>B<)>
Set error detection flags. C<f_err_detect> is deprecated and
should be used only via the B<ffmpeg> tool.
Possible values:
=over 4
=item B<crccheck>
Verify embedded CRCs.
=item B<bitstream>
Detect bitstream specification deviations.
=item B<buffer>
Detect improper bitstream length.
=item B<explode>
Abort decoding on minor error detection.
=item B<careful>
Consider things that violate the spec and have not been seen in the
wild as errors.
=item B<compliant>
Consider all spec non compliancies as errors.
=item B<aggressive>
Consider things that a sane encoder should not do as an error.
=back
=item B<use_wallclock_as_timestamps> I<integer> B<(>I<input>B<)>
Use wallclock as timestamps.
=item B<avoid_negative_ts> I<integer> B<(>I<output>B<)>
Shift timestamps to make them non-negative. A value of 1 enables shifting,
a value of 0 disables it, the default value of -1 enables shifting
when required by the target format.
When shifting is enabled, all output timestamps are shifted by the
same amount. Audio, video, and subtitles desynching and relative
timestamp differences are preserved compared to how they would have
been without shifting.
Also note that this affects only leading negative timestamps, and not
non-monotonic negative timestamps.
=item B<skip_initial_bytes> I<integer> B<(>I<input>B<)>
Set number of bytes to skip before reading header and frames if set to 1.
Default is 0.
=item B<correct_ts_overflow> I<integer> B<(>I<input>B<)>
Correct single timestamp overflows if set to 1. Default is 1.
=item B<flush_packets> I<integer> B<(>I<output>B<)>
Flush the underlying I/O stream after each packet. Default 1 enables it, and
has the effect of reducing the latency; 0 disables it and may slightly
increase performance in some cases.
=back
=head2 Format stream specifiers
Format stream specifiers allow selection of one or more streams that
match specific properties.
Possible forms of stream specifiers are:
=over 4
=item I<stream_index>
Matches the stream with this index.
=item I<stream_type>B<[:>I<stream_index>B<]>
I<stream_type> is one of following: 'v' for video, 'a' for audio,
's' for subtitle, 'd' for data, and 't' for attachments. If
I<stream_index> is given, then it matches the stream number
I<stream_index> of this type. Otherwise, it matches all streams of
this type.
=item B<p:>I<program_id>B<[:>I<stream_index>B<]>
If I<stream_index> is given, then it matches the stream with number
I<stream_index> in the program with the id
I<program_id>. Otherwise, it matches all streams in the program.
=item B<#>I<stream_id>
Matches the stream by a format-specific ID.
=back
The exact semantics of stream specifiers is defined by the
C<avformat_match_stream_specifier()> function declared in the
F<libavformat/avformat.h> header.
=head1 DEMUXERS
Demuxers are configured elements in FFmpeg that can read the
multimedia streams from a particular type of file.
When you configure your FFmpeg build, all the supported demuxers
are enabled by default. You can list all available ones using the
configure option C<--list-demuxers>.
You can disable all the demuxers using the configure option
C<--disable-demuxers>, and selectively enable a single demuxer with
the option C<--enable-demuxer=I<DEMUXER>>, or disable it
with the option C<--disable-demuxer=I<DEMUXER>>.
The option C<-formats> of the ff* tools will display the list of
enabled demuxers.
The description of some of the currently available demuxers follows.
=head2 applehttp
Apple HTTP Live Streaming demuxer.
This demuxer presents all AVStreams from all variant streams.
The id field is set to the bitrate variant index number. By setting
the discard flags on AVStreams (by pressing 'a' or 'v' in ffplay),
the caller can decide which variant streams to actually receive.
The total bitrate of the variant that the stream belongs to is
available in a metadata key named "variant_bitrate".
=head2 asf
Advanced Systems Format demuxer.
This demuxer is used to demux ASF files and MMS network streams.
=over 4
=item B<-no_resync_search> I<bool>
Do not try to resynchronize by looking for a certain optional start code.
=back
=head2 concat
Virtual concatenation script demuxer.
This demuxer reads a list of files and other directives from a text file and
demuxes them one after the other, as if all their packet had been muxed
together.
The timestamps in the files are adjusted so that the first file starts at 0
and each next file starts where the previous one finishes. Note that it is
done globally and may cause gaps if all streams do not have exactly the same
length.
All files must have the same streams (same codecs, same time base, etc.).
The duration of each file is used to adjust the timestamps of the next file:
if the duration is incorrect (because it was computed using the bit-rate or
because the file is truncated, for example), it can cause artifacts. The
C<duration> directive can be used to override the duration stored in
each file.
=head3 Syntax
The script is a text file in extended-ASCII, with one directive per line.
Empty lines, leading spaces and lines starting with '#' are ignored. The
following directive is recognized:
=over 4
=item B<C<file I<path>>>
Path to a file to read; special characters and spaces must be escaped with
backslash or single quotes.
All subsequent directives apply to that file.
=item B<C<ffconcat version 1.0>>
Identify the script type and version. It also sets the B<safe> option
to 1 if it was to its default -1.
To make FFmpeg recognize the format automatically, this directive must
appears exactly as is (no extra space or byte-order-mark) on the very first
line of the script.
=item B<C<duration I<dur>>>
Duration of the file. This information can be specified from the file;
specifying it here may be more efficient or help if the information from the
file is not available or accurate.
If the duration is set for all files, then it is possible to seek in the
whole concatenated video.
=back
=head3 Options
This demuxer accepts the following option:
=over 4
=item B<safe>
If set to 1, reject unsafe file paths. A file path is considered safe if it
does not contain a protocol specification and is relative and all components
only contain characters from the portable character set (letters, digits,
period, underscore and hyphen) and have no period at the beginning of a
component.
If set to 0, any file name is accepted.
The default is -1, it is equivalent to 1 if the format was automatically
probed and 0 otherwise.
=back
=head2 flv
Adobe Flash Video Format demuxer.
This demuxer is used to demux FLV files and RTMP network streams.
=over 4
=item B<-flv_metadata> I<bool>
Allocate the streams according to the onMetaData array content.
=back
=head2 libgme
The Game Music Emu library is a collection of video game music file emulators.
See E<lt>B<http://code.google.com/p/game-music-emu/>E<gt> for more information.
Some files have multiple tracks. The demuxer will pick the first track by
default. The B<track_index> option can be used to select a different
track. Track indexes start at 0. The demuxer exports the number of tracks as
I<tracks> meta data entry.
For very large files, the B<max_size> option may have to be adjusted.
=head2 libquvi
Play media from Internet services using the quvi project.
The demuxer accepts a B<format> option to request a specific quality. It
is by default set to I<best>.
See E<lt>B<http://quvi.sourceforge.net/>E<gt> for more information.
FFmpeg needs to be built with C<--enable-libquvi> for this demuxer to be
enabled.
=head2 image2
Image file demuxer.
This demuxer reads from a list of image files specified by a pattern.
The syntax and meaning of the pattern is specified by the
option I<pattern_type>.
The pattern may contain a suffix which is used to automatically
determine the format of the images contained in the files.
The size, the pixel format, and the format of each image must be the
same for all the files in the sequence.
This demuxer accepts the following options:
=over 4
=item B<framerate>
Set the frame rate for the video stream. It defaults to 25.
=item B<loop>
If set to 1, loop over the input. Default value is 0.
=item B<pattern_type>
Select the pattern type used to interpret the provided filename.
I<pattern_type> accepts one of the following values.
=over 4
=item B<sequence>
Select a sequence pattern type, used to specify a sequence of files
indexed by sequential numbers.
A sequence pattern may contain the string "%d" or "%0I<N>d", which
specifies the position of the characters representing a sequential
number in each filename matched by the pattern. If the form
"%d0I<N>d" is used, the string representing the number in each
filename is 0-padded and I<N> is the total number of 0-padded
digits representing the number. The literal character '%' can be
specified in the pattern with the string "%%".
If the sequence pattern contains "%d" or "%0I<N>d", the first filename of
the file list specified by the pattern must contain a number
inclusively contained between I<start_number> and
I<start_number>+I<start_number_range>-1, and all the following
numbers must be sequential.
For example the pattern "img-%03d.bmp" will match a sequence of
filenames of the form F<img-001.bmp>, F<img-002.bmp>, ...,
F<img-010.bmp>, etc.; the pattern "i%%m%%g-%d.jpg" will match a
sequence of filenames of the form F<i%m%g-1.jpg>,
F<i%m%g-2.jpg>, ..., F<i%m%g-10.jpg>, etc.
Note that the pattern must not necessarily contain "%d" or
"%0I<N>d", for example to convert a single image file
F<img.jpeg> you can employ the command:
ffmpeg -i img.jpeg img.png
=item B<glob>
Select a glob wildcard pattern type.
The pattern is interpreted like a C<glob()> pattern. This is only
selectable if libavformat was compiled with globbing support.
=item B<glob_sequence> I<(deprecated, will be removed)>
Select a mixed glob wildcard/sequence pattern.
If your version of libavformat was compiled with globbing support, and
the provided pattern contains at least one glob meta character among
C<%*?[]{}> that is preceded by an unescaped "%", the pattern is
interpreted like a C<glob()> pattern, otherwise it is interpreted
like a sequence pattern.
All glob special characters C<%*?[]{}> must be prefixed
with "%". To escape a literal "%" you shall use "%%".
For example the pattern C<foo-%*.jpeg> will match all the
filenames prefixed by "foo-" and terminating with ".jpeg", and
C<foo-%?%?%?.jpeg> will match all the filenames prefixed with
"foo-", followed by a sequence of three characters, and terminating
with ".jpeg".
This pattern type is deprecated in favor of I<glob> and
I<sequence>.
=back
Default value is I<glob_sequence>.
=item B<pixel_format>
Set the pixel format of the images to read. If not specified the pixel
format is guessed from the first image file in the sequence.
=item B<start_number>
Set the index of the file matched by the image file pattern to start
to read from. Default value is 0.
=item B<start_number_range>
Set the index interval range to check when looking for the first image
file in the sequence, starting from I<start_number>. Default value
is 5.
=item B<ts_from_file>
If set to 1, will set frame timestamp to modification time of image file. Note
that monotonity of timestamps is not provided: images go in the same order as
without this option. Default value is 0.
=item B<video_size>
Set the video size of the images to read. If not specified the video
size is guessed from the first image file in the sequence.
=back
=head3 Examples
=over 4
=item *
Use B<ffmpeg> for creating a video from the images in the file
sequence F<img-001.jpeg>, F<img-002.jpeg>, ..., assuming an
input frame rate of 10 frames per second:
ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv
=item *
As above, but start by reading from a file with index 100 in the sequence:
ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv
=item *
Read images matching the "*.png" glob pattern , that is all the files
terminating with the ".png" suffix:
ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
=back
=head2 mpegts
MPEG-2 transport stream demuxer.
=over 4
=item B<fix_teletext_pts>
Overrides teletext packet PTS and DTS values with the timestamps calculated
from the PCR of the first program which the teletext stream is part of and is
not discarded. Default value is 1, set this option to 0 if you want your
teletext packet PTS and DTS values untouched.
=back
=head2 rawvideo
Raw video demuxer.
This demuxer allows to read raw video data. Since there is no header
specifying the assumed video parameters, the user must specify them
in order to be able to decode the data correctly.
This demuxer accepts the following options:
=over 4
=item B<framerate>
Set input video frame rate. Default value is 25.
=item B<pixel_format>
Set the input video pixel format. Default value is C<yuv420p>.
=item B<video_size>
Set the input video size. This value must be specified explicitly.
=back
For example to read a rawvideo file F<input.raw> with
B<ffplay>, assuming a pixel format of C<rgb24>, a video
size of C<320x240>, and a frame rate of 10 images per second, use
the command:
ffplay -f rawvideo -pixel_format rgb24 -video_size 320x240 -framerate 10 input.raw
=head2 sbg
SBaGen script demuxer.
This demuxer reads the script language used by SBaGen
E<lt>B<http://uazu.net/sbagen/>E<gt> to generate binaural beats sessions. A SBG
script looks like that:
-SE
a: 300-2.5/3 440+4.5/0
b: 300-2.5/0 440+4.5/3
off: -
NOW == a
+0:07:00 == b
+0:14:00 == a
+0:21:00 == b
+0:30:00 off
A SBG script can mix absolute and relative timestamps. If the script uses
either only absolute timestamps (including the script start time) or only
relative ones, then its layout is fixed, and the conversion is
straightforward. On the other hand, if the script mixes both kind of
timestamps, then the I<NOW> reference for relative timestamps will be
taken from the current time of day at the time the script is read, and the
script layout will be frozen according to that reference. That means that if
the script is directly played, the actual times will match the absolute
timestamps up to the sound controller's clock accuracy, but if the user
somehow pauses the playback or seeks, all times will be shifted accordingly.
=head2 tedcaptions
JSON captions used for E<lt>B<http://www.ted.com/>E<gt>.
TED does not provide links to the captions, but they can be guessed from the
page. The file F<tools/bookmarklets.html> from the FFmpeg source tree
contains a bookmarklet to expose them.
This demuxer accepts the following option:
=over 4
=item B<start_time>
Set the start time of the TED talk, in milliseconds. The default is 15000
(15s). It is used to sync the captions with the downloadable videos, because
they include a 15s intro.
=back
Example: convert the captions to a format most players understand:
ffmpeg -i http://www.ted.com/talks/subtitles/id/1/lang/en talk1-en.srt
=head1 MUXERS
Muxers are configured elements in FFmpeg which allow writing
multimedia streams to a particular type of file.
When you configure your FFmpeg build, all the supported muxers
are enabled by default. You can list all available muxers using the
configure option C<--list-muxers>.
You can disable all the muxers with the configure option
C<--disable-muxers> and selectively enable / disable single muxers
with the options C<--enable-muxer=I<MUXER>> /
C<--disable-muxer=I<MUXER>>.
The option C<-formats> of the ff* tools will display the list of
enabled muxers.
A description of some of the currently available muxers follows.
=head2 aiff
Audio Interchange File Format muxer.
It accepts the following options:
=over 4
=item B<write_id3v2>
Enable ID3v2 tags writing when set to 1. Default is 0 (disabled).
=item B<id3v2_version>
Select ID3v2 version to write. Currently only version 3 and 4 (aka.
ID3v2.3 and ID3v2.4) are supported. The default is version 4.
=back
=head2 crc
CRC (Cyclic Redundancy Check) testing format.
This muxer computes and prints the Adler-32 CRC of all the input audio
and video frames. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
CRC.
The output of the muxer consists of a single line of the form:
CRC=0xI<CRC>, where I<CRC> is a hexadecimal number 0-padded to
8 digits containing the CRC for all the decoded input frames.
For example to compute the CRC of the input, and store it in the file
F<out.crc>:
ffmpeg -i INPUT -f crc out.crc
You can print the CRC to stdout with the command:
ffmpeg -i INPUT -f crc -
You can select the output format of each frame with B<ffmpeg> by
specifying the audio and video codec and format. For example to
compute the CRC of the input audio converted to PCM unsigned 8-bit
and the input video converted to MPEG-2 video, use the command:
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f crc -
See also the framecrc muxer.
=head2 framecrc
Per-packet CRC (Cyclic Redundancy Check) testing format.
This muxer computes and prints the Adler-32 CRC for each audio
and video packet. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
CRC.
The output of the muxer consists of a line for each audio and video
packet of the form:
<stream_index>, <packet_dts>, <packet_pts>, <packet_duration>, <packet_size>, 0x<CRC>
I<CRC> is a hexadecimal number 0-padded to 8 digits containing the
CRC of the packet.
For example to compute the CRC of the audio and video frames in
F<INPUT>, converted to raw audio and video packets, and store it
in the file F<out.crc>:
ffmpeg -i INPUT -f framecrc out.crc
To print the information to stdout, use the command:
ffmpeg -i INPUT -f framecrc -
With B<ffmpeg>, you can select the output format to which the
audio and video frames are encoded before computing the CRC for each
packet by specifying the audio and video codec. For example, to
compute the CRC of each decoded input audio frame converted to PCM
unsigned 8-bit and of each decoded input video frame converted to
MPEG-2 video, use the command:
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f framecrc -
See also the crc muxer.
=head2 framemd5
Per-packet MD5 testing format.
This muxer computes and prints the MD5 hash for each audio
and video packet. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
hash.
The output of the muxer consists of a line for each audio and video
packet of the form:
<stream_index>, <packet_dts>, <packet_pts>, <packet_duration>, <packet_size>, <MD5>
I<MD5> is a hexadecimal number representing the computed MD5 hash
for the packet.
For example to compute the MD5 of the audio and video frames in
F<INPUT>, converted to raw audio and video packets, and store it
in the file F<out.md5>:
ffmpeg -i INPUT -f framemd5 out.md5
To print the information to stdout, use the command:
ffmpeg -i INPUT -f framemd5 -
See also the md5 muxer.
=head2 hls
Apple HTTP Live Streaming muxer that segments MPEG-TS according to
the HTTP Live Streaming specification.
It creates a playlist file and numbered segment files. The output
filename specifies the playlist filename; the segment filenames
receive the same basename as the playlist, a sequential number and
a .ts extension.
ffmpeg -i in.nut out.m3u8
=over 4
=item B<-hls_time> I<seconds>
Set the segment length in seconds.
=item B<-hls_list_size> I<size>
Set the maximum number of playlist entries.
=item B<-hls_wrap> I<wrap>
Set the number after which index wraps.
=item B<-start_number> I<number>
Start the sequence from I<number>.
=back
=head2 ico
ICO file muxer.
Microsoft's icon file format (ICO) has some strict limitations that should be noted:
=over 4
=item *
Size cannot exceed 256 pixels in any dimension
=item *
Only BMP and PNG images can be stored
=item *
If a BMP image is used, it must be one of the following pixel formats:
BMP Bit Depth FFmpeg Pixel Format
1bit pal8
4bit pal8
8bit pal8
16bit rgb555le
24bit bgr24
32bit bgra
=item *
If a BMP image is used, it must use the BITMAPINFOHEADER DIB header
=item *
If a PNG image is used, it must use the rgba pixel format
=back
=head2 image2
Image file muxer.
The image file muxer writes video frames to image files.
The output filenames are specified by a pattern, which can be used to
produce sequentially numbered series of files.
The pattern may contain the string "%d" or "%0I<N>d", this string
specifies the position of the characters representing a numbering in
the filenames. If the form "%0I<N>d" is used, the string
representing the number in each filename is 0-padded to I<N>
digits. The literal character '%' can be specified in the pattern with
the string "%%".
If the pattern contains "%d" or "%0I<N>d", the first filename of
the file list specified will contain the number 1, all the following
numbers will be sequential.
The pattern may contain a suffix which is used to automatically
determine the format of the image files to write.
For example the pattern "img-%03d.bmp" will specify a sequence of
filenames of the form F<img-001.bmp>, F<img-002.bmp>, ...,
F<img-010.bmp>, etc.
The pattern "img%%-%d.jpg" will specify a sequence of filenames of the
form F<img%-1.jpg>, F<img%-2.jpg>, ..., F<img%-10.jpg>,
etc.
The following example shows how to use B<ffmpeg> for creating a
sequence of files F<img-001.jpeg>, F<img-002.jpeg>, ...,
taking one image every second from the input video:
ffmpeg -i in.avi -vsync 1 -r 1 -f image2 'img-%03d.jpeg'
Note that with B<ffmpeg>, if the format is not specified with the
C<-f> option and the output filename specifies an image file
format, the image2 muxer is automatically selected, so the previous
command can be written as:
ffmpeg -i in.avi -vsync 1 -r 1 'img-%03d.jpeg'
Note also that the pattern must not necessarily contain "%d" or
"%0I<N>d", for example to create a single image file
F<img.jpeg> from the input video you can employ the command:
ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg
=over 4
=item B<start_number> I<number>
Start the sequence from I<number>. Default value is 1. Must be a
non-negative number.
=item B<-update> I<number>
If I<number> is nonzero, the filename will always be interpreted as just a
filename, not a pattern, and this file will be continuously overwritten with new
images.
=back
The image muxer supports the .Y.U.V image file format. This format is
special in that that each image frame consists of three files, for
each of the YUV420P components. To read or write this image file format,
specify the name of the '.Y' file. The muxer will automatically open the
'.U' and '.V' files as required.
=head2 matroska
Matroska container muxer.
This muxer implements the matroska and webm container specs.
The recognized metadata settings in this muxer are:
=over 4
=item B<title=>I<title name>
Name provided to a single track
=back
=over 4
=item B<language=>I<language name>
Specifies the language of the track in the Matroska languages form
=back
=over 4
=item B<stereo_mode=>I<mode>
Stereo 3D video layout of two views in a single video track
=over 4
=item B<mono>
video is not stereo
=item B<left_right>
Both views are arranged side by side, Left-eye view is on the left
=item B<bottom_top>
Both views are arranged in top-bottom orientation, Left-eye view is at bottom
=item B<top_bottom>
Both views are arranged in top-bottom orientation, Left-eye view is on top
=item B<checkerboard_rl>
Each view is arranged in a checkerboard interleaved pattern, Left-eye view being first
=item B<checkerboard_lr>
Each view is arranged in a checkerboard interleaved pattern, Right-eye view being first
=item B<row_interleaved_rl>
Each view is constituted by a row based interleaving, Right-eye view is first row
=item B<row_interleaved_lr>
Each view is constituted by a row based interleaving, Left-eye view is first row
=item B<col_interleaved_rl>
Both views are arranged in a column based interleaving manner, Right-eye view is first column
=item B<col_interleaved_lr>
Both views are arranged in a column based interleaving manner, Left-eye view is first column
=item B<anaglyph_cyan_red>
All frames are in anaglyph format viewable through red-cyan filters
=item B<right_left>
Both views are arranged side by side, Right-eye view is on the left
=item B<anaglyph_green_magenta>
All frames are in anaglyph format viewable through green-magenta filters
=item B<block_lr>
Both eyes laced in one Block, Left-eye view is first
=item B<block_rl>
Both eyes laced in one Block, Right-eye view is first
=back
=back
For example a 3D WebM clip can be created using the following command line:
ffmpeg -i sample_left_right_clip.mpg -an -c:v libvpx -metadata stereo_mode=left_right -y stereo_clip.webm
This muxer supports the following options:
=over 4
=item B<reserve_index_space>
By default, this muxer writes the index for seeking (called cues in Matroska
terms) at the end of the file, because it cannot know in advance how much space
to leave for the index at the beginning of the file. However for some use cases
-- e.g. streaming where seeking is possible but slow -- it is useful to put the
index at the beginning of the file.
If this option is set to a non-zero value, the muxer will reserve a given amount
of space in the file header and then try to write the cues there when the muxing
finishes. If the available space does not suffice, muxing will fail. A safe size
for most use cases should be about 50kB per hour of video.
Note that cues are only written if the output is seekable and this option will
have no effect if it is not.
=back
=head2 md5
MD5 testing format.
This muxer computes and prints the MD5 hash of all the input audio
and video frames. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
hash.
The output of the muxer consists of a single line of the form:
MD5=I<MD5>, where I<MD5> is a hexadecimal number representing
the computed MD5 hash.
For example to compute the MD5 hash of the input converted to raw
audio and video, and store it in the file F<out.md5>:
ffmpeg -i INPUT -f md5 out.md5
You can print the MD5 to stdout with the command:
ffmpeg -i INPUT -f md5 -
See also the framemd5 muxer.
=head2 MOV/MP4/ISMV
The mov/mp4/ismv muxer supports fragmentation. Normally, a MOV/MP4
file has all the metadata about all packets stored in one location
(written at the end of the file, it can be moved to the start for
better playback by adding I<faststart> to the I<movflags>, or
using the B<qt-faststart> tool). A fragmented
file consists of a number of fragments, where packets and metadata
about these packets are stored together. Writing a fragmented
file has the advantage that the file is decodable even if the
writing is interrupted (while a normal MOV/MP4 is undecodable if
it is not properly finished), and it requires less memory when writing
very long files (since writing normal MOV/MP4 files stores info about
every single packet in memory until the file is closed). The downside
is that it is less compatible with other applications.
Fragmentation is enabled by setting one of the AVOptions that define
how to cut the file into fragments:
=over 4
=item B<-moov_size> I<bytes>
Reserves space for the moov atom at the beginning of the file instead of placing the
moov atom at the end. If the space reserved is insufficient, muxing will fail.
=item B<-movflags frag_keyframe>
Start a new fragment at each video keyframe.
=item B<-frag_duration> I<duration>
Create fragments that are I<duration> microseconds long.
=item B<-frag_size> I<size>
Create fragments that contain up to I<size> bytes of payload data.
=item B<-movflags frag_custom>
Allow the caller to manually choose when to cut fragments, by
calling C<av_write_frame(ctx, NULL)> to write a fragment with
the packets written so far. (This is only useful with other
applications integrating libavformat, not from B<ffmpeg>.)
=item B<-min_frag_duration> I<duration>
Don't create fragments that are shorter than I<duration> microseconds long.
=back
If more than one condition is specified, fragments are cut when
one of the specified conditions is fulfilled. The exception to this is
C<-min_frag_duration>, which has to be fulfilled for any of the other
conditions to apply.
Additionally, the way the output file is written can be adjusted
through a few other options:
=over 4
=item B<-movflags empty_moov>
Write an initial moov atom directly at the start of the file, without
describing any samples in it. Generally, an mdat/moov pair is written
at the start of the file, as a normal MOV/MP4 file, containing only
a short portion of the file. With this option set, there is no initial
mdat atom, and the moov atom only describes the tracks but has
a zero duration.
Files written with this option set do not work in QuickTime.
This option is implicitly set when writing ismv (Smooth Streaming) files.
=item B<-movflags separate_moof>
Write a separate moof (movie fragment) atom for each track. Normally,
packets for all tracks are written in a moof atom (which is slightly
more efficient), but with this option set, the muxer writes one moof/mdat
pair for each track, making it easier to separate tracks.
This option is implicitly set when writing ismv (Smooth Streaming) files.
=item B<-movflags faststart>
Run a second pass moving the index (moov atom) to the beginning of the file.
This operation can take a while, and will not work in various situations such
as fragmented output, thus it is not enabled by default.
=item B<-movflags rtphint>
Add RTP hinting tracks to the output file.
=back
Smooth Streaming content can be pushed in real time to a publishing
point on IIS with this muxer. Example:
ffmpeg -re <<normal input/transcoding options>> -movflags isml+frag_keyframe -f ismv http://server/publishingpoint.isml/Streams(Encoder1)
=head2 mp3
The MP3 muxer writes a raw MP3 stream with an ID3v2 header at the beginning and
optionally an ID3v1 tag at the end. ID3v2.3 and ID3v2.4 are supported, the
C<id3v2_version> option controls which one is used. The legacy ID3v1 tag is
not written by default, but may be enabled with the C<write_id3v1> option.
For seekable output the muxer also writes a Xing frame at the beginning, which
contains the number of frames in the file. It is useful for computing duration
of VBR files.
The muxer supports writing ID3v2 attached pictures (APIC frames). The pictures
are supplied to the muxer in form of a video stream with a single packet. There
can be any number of those streams, each will correspond to a single APIC frame.
The stream metadata tags I<title> and I<comment> map to APIC
I<description> and I<picture type> respectively. See
E<lt>B<http://id3.org/id3v2.4.0-frames>E<gt> for allowed picture types.
Note that the APIC frames must be written at the beginning, so the muxer will
buffer the audio frames until it gets all the pictures. It is therefore advised
to provide the pictures as soon as possible to avoid excessive buffering.
Examples:
Write an mp3 with an ID3v2.3 header and an ID3v1 footer:
ffmpeg -i INPUT -id3v2_version 3 -write_id3v1 1 out.mp3
To attach a picture to an mp3 file select both the audio and the picture stream
with C<map>:
ffmpeg -i input.mp3 -i cover.png -c copy -map 0 -map 1
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" out.mp3
=head2 mpegts
MPEG transport stream muxer.
This muxer implements ISO 13818-1 and part of ETSI EN 300 468.
The muxer options are:
=over 4
=item B<-mpegts_original_network_id> I<number>
Set the original_network_id (default 0x0001). This is unique identifier
of a network in DVB. Its main use is in the unique identification of a
service through the path Original_Network_ID, Transport_Stream_ID.
=item B<-mpegts_transport_stream_id> I<number>
Set the transport_stream_id (default 0x0001). This identifies a
transponder in DVB.
=item B<-mpegts_service_id> I<number>
Set the service_id (default 0x0001) also known as program in DVB.
=item B<-mpegts_pmt_start_pid> I<number>
Set the first PID for PMT (default 0x1000, max 0x1f00).
=item B<-mpegts_start_pid> I<number>
Set the first PID for data packets (default 0x0100, max 0x0f00).
=item B<-mpegts_m2ts_mode> I<number>
Enable m2ts mode if set to 1. Default value is -1 which disables m2ts mode.
=item B<-muxrate> I<number>
Set muxrate.
=item B<-pes_payload_size> I<number>
Set minimum PES packet payload in bytes.
=item B<-mpegts_flags> I<flags>
Set flags (see below).
=item B<-mpegts_copyts> I<number>
Preserve original timestamps, if value is set to 1. Default value is -1, which
results in shifting timestamps so that they start from 0.
=item B<-tables_version> I<number>
Set PAT, PMT and SDT version (default 0, valid values are from 0 to 31, inclusively).
This option allows updating stream structure so that standard consumer may
detect the change. To do so, reopen output AVFormatContext (in case of API
usage) or restart ffmpeg instance, cyclically changing tables_version value:
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
...
ffmpeg -i source3.ts -codec copy -f mpegts -tables_version 31 udp://1.1.1.1:1111
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
...
=back
Option mpegts_flags may take a set of such flags:
=over 4
=item B<resend_headers>
Reemit PAT/PMT before writing the next packet.
=item B<latm>
Use LATM packetization for AAC.
=back
The recognized metadata settings in mpegts muxer are C<service_provider>
and C<service_name>. If they are not set the default for
C<service_provider> is "FFmpeg" and the default for
C<service_name> is "Service01".
ffmpeg -i file.mpg -c copy \
-mpegts_original_network_id 0x1122 \
-mpegts_transport_stream_id 0x3344 \
-mpegts_service_id 0x5566 \
-mpegts_pmt_start_pid 0x1500 \
-mpegts_start_pid 0x150 \
-metadata service_provider="Some provider" \
-metadata service_name="Some Channel" \
-y out.ts
=head2 null
Null muxer.
This muxer does not generate any output file, it is mainly useful for
testing or benchmarking purposes.
For example to benchmark decoding with B<ffmpeg> you can use the
command:
ffmpeg -benchmark -i INPUT -f null out.null
Note that the above command does not read or write the F<out.null>
file, but specifying the output file is required by the B<ffmpeg>
syntax.
Alternatively you can write the command as:
ffmpeg -benchmark -i INPUT -f null -
=head2 ogg
Ogg container muxer.
=over 4
=item B<-page_duration> I<duration>
Preferred page duration, in microseconds. The muxer will attempt to create
pages that are approximately I<duration> microseconds long. This allows the
user to compromise between seek granularity and container overhead. The default
is 1 second. A value of 0 will fill all segments, making pages as large as
possible. A value of 1 will effectively use 1 packet-per-page in most
situations, giving a small seek granularity at the cost of additional container
overhead.
=back
=head2 segment, stream_segment, ssegment
Basic stream segmenter.
The segmenter muxer outputs streams to a number of separate files of nearly
fixed duration. Output filename pattern can be set in a fashion similar to
image2.
C<stream_segment> is a variant of the muxer used to write to
streaming output formats, i.e. which do not require global headers,
and is recommended for outputting e.g. to MPEG transport stream segments.
C<ssegment> is a shorter alias for C<stream_segment>.
Every segment starts with a keyframe of the selected reference stream,
which is set through the B<reference_stream> option.
Note that if you want accurate splitting for a video file, you need to
make the input key frames correspond to the exact splitting times
expected by the segmenter, or the segment muxer will start the new
segment with the key frame found next after the specified start
time.
The segment muxer works best with a single constant frame rate video.
Optionally it can generate a list of the created segments, by setting
the option I<segment_list>. The list type is specified by the
I<segment_list_type> option.
The segment muxer supports the following options:
=over 4
=item B<reference_stream> I<specifier>
Set the reference stream, as specified by the string I<specifier>.
If I<specifier> is set to C<auto>, the reference is choosen
automatically. Otherwise it must be a stream specifier (see the ``Stream
specifiers'' chapter in the ffmpeg manual) which specifies the
reference stream. The default value is C<auto>.
=item B<segment_format> I<format>
Override the inner container format, by default it is guessed by the filename
extension.
=item B<segment_list> I<name>
Generate also a listfile named I<name>. If not specified no
listfile is generated.
=item B<segment_list_flags> I<flags>
Set flags affecting the segment list generation.
It currently supports the following flags:
=over 4
=item B<cache>
Allow caching (only affects M3U8 list files).
=item B<live>
Allow live-friendly file generation.
=back
Default value is C<samp>.
=item B<segment_list_size> I<size>
Update the list file so that it contains at most the last I<size>
segments. If 0 the list file will contain all the segments. Default
value is 0.
=item B<segment_list_type> I<type>
Specify the format for the segment list file.
The following values are recognized:
=over 4
=item B<flat>
Generate a flat list for the created segments, one segment per line.
=item B<csv, ext>
Generate a list for the created segments, one segment per line,
each line matching the format (comma-separated values):
<segment_filename>,<segment_start_time>,<segment_end_time>
I<segment_filename> is the name of the output file generated by the
muxer according to the provided pattern. CSV escaping (according to
RFC4180) is applied if required.
I<segment_start_time> and I<segment_end_time> specify
the segment start and end time expressed in seconds.
A list file with the suffix C<".csv"> or C<".ext"> will
auto-select this format.
B<ext> is deprecated in favor or B<csv>.
=item B<ffconcat>
Generate an ffconcat file for the created segments. The resulting file
can be read using the FFmpeg concat demuxer.
A list file with the suffix C<".ffcat"> or C<".ffconcat"> will
auto-select this format.
=item B<m3u8>
Generate an extended M3U8 file, version 3, compliant with
E<lt>B<http://tools.ietf.org/id/draft-pantos-http-live-streaming>E<gt>.
A list file with the suffix C<".m3u8"> will auto-select this format.
=back
If not specified the type is guessed from the list file name suffix.
=item B<segment_time> I<time>
Set segment duration to I<time>, the value must be a duration
specification. Default value is "2". See also the
B<segment_times> option.
Note that splitting may not be accurate, unless you force the
reference stream key-frames at the given time. See the introductory
notice and the examples below.
=item B<segment_time_delta> I<delta>
Specify the accuracy time when selecting the start time for a
segment, expressed as a duration specification. Default value is "0".
When delta is specified a key-frame will start a new segment if its
PTS satisfies the relation:
PTS >= start_time - time_delta
This option is useful when splitting video content, which is always
split at GOP boundaries, in case a key frame is found just before the
specified split time.
In particular may be used in combination with the F<ffmpeg> option
I<force_key_frames>. The key frame times specified by
I<force_key_frames> may not be set accurately because of rounding
issues, with the consequence that a key frame time may result set just
before the specified time. For constant frame rate videos a value of
1/2*I<frame_rate> should address the worst case mismatch between
the specified time and the time set by I<force_key_frames>.
=item B<segment_times> I<times>
Specify a list of split points. I<times> contains a list of comma
separated duration specifications, in increasing order. See also
the B<segment_time> option.
=item B<segment_frames> I<frames>
Specify a list of split video frame numbers. I<frames> contains a
list of comma separated integer numbers, in increasing order.
This option specifies to start a new segment whenever a reference
stream key frame is found and the sequential number (starting from 0)
of the frame is greater or equal to the next value in the list.
=item B<segment_wrap> I<limit>
Wrap around segment index once it reaches I<limit>.
=item B<segment_start_number> I<number>
Set the sequence number of the first segment. Defaults to C<0>.
=item B<reset_timestamps> I<1|0>
Reset timestamps at the begin of each segment, so that each segment
will start with near-zero timestamps. It is meant to ease the playback
of the generated segments. May not work with some combinations of
muxers/codecs. It is set to C<0> by default.
=item B<initial_offset> I<offset>
Specify timestamp offset to apply to the output packet timestamps. The
argument must be a time duration specification, and defaults to 0.
=back
=head3 Examples
=over 4
=item *
To remux the content of file F<in.mkv> to a list of segments
F<out-000.nut>, F<out-001.nut>, etc., and write the list of
generated segments to F<out.list>:
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.list out%03d.nut
=item *
As the example above, but segment the input file according to the split
points specified by the I<segment_times> option:
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 out%03d.nut
=item *
As the example above, but use the B<ffmpeg> B<force_key_frames>
option to force key frames in the input at the specified location, together
with the segment option B<segment_time_delta> to account for
possible roundings operated when setting key frame times.
ffmpeg -i in.mkv -force_key_frames 1,2,3,5,8,13,21 -codec:v mpeg4 -codec:a pcm_s16le -map 0 \
-f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 -segment_time_delta 0.05 out%03d.nut
In order to force key frames on the input file, transcoding is
required.
=item *
Segment the input file by splitting the input file according to the
frame numbers sequence specified with the B<segment_frames> option:
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_frames 100,200,300,500,800 out%03d.nut
=item *
To convert the F<in.mkv> to TS segments using the C<libx264>
and C<libfaac> encoders:
ffmpeg -i in.mkv -map 0 -codec:v libx264 -codec:a libfaac -f ssegment -segment_list out.list out%03d.ts
=item *
Segment the input file, and create an M3U8 live playlist (can be used
as live HLS source):
ffmpeg -re -i in.mkv -codec copy -map 0 -f segment -segment_list playlist.m3u8 \
-segment_list_flags +live -segment_time 10 out%03d.mkv
=back
=head2 tee
The tee muxer can be used to write the same data to several files or any
other kind of muxer. It can be used, for example, to both stream a video to
the network and save it to disk at the same time.
It is different from specifying several outputs to the B<ffmpeg>
command-line tool because the audio and video data will be encoded only once
with the tee muxer; encoding can be a very expensive process. It is not
useful when using the libavformat API directly because it is then possible
to feed the same packets to several muxers directly.
The slave outputs are specified in the file name given to the muxer,
separated by '|'. If any of the slave name contains the '|' separator,
leading or trailing spaces or any special character, it must be
escaped (see the ``Quoting and escaping'' section in the ffmpeg-utils
manual).
Muxer options can be specified for each slave by prepending them as a list of
I<key>=I<value> pairs separated by ':', between square brackets. If
the options values contain a special character or the ':' separator, they
must be escaped; note that this is a second level escaping.
The following special options are also recognized:
=over 4
=item B<f>
Specify the format name. Useful if it cannot be guessed from the
output name suffix.
=item B<bsfs[/>I<spec>B<]>
Specify a list of bitstream filters to apply to the specified
output. It is possible to specify to which streams a given bitstream
filter applies, by appending a stream specifier to the option
separated by C</>. If the stream specifier is not specified, the
bistream filters will be applied to all streams in the output.
Several bitstream filters can be specified, separated by ",".
=item B<select>
Select the streams that should be mapped to the slave output,
specified by a stream specifier. If not specified, this defaults to
all the input streams.
=back
Some examples follow.
=over 4
=item *
Encode something and both archive it in a WebM file and stream it
as MPEG-TS over UDP (the streams need to be explicitly mapped):
ffmpeg -i ... -c:v libx264 -c:a mp2 -f tee -map 0:v -map 0:a
"archive-20121107.mkv|[f=mpegts]udp://10.0.1.255:1234/"
=item *
Use B<ffmpeg> to encode the input, and send the output
to three different destinations. The C<dump_extra> bitstream
filter is used to add extradata information to all the output video
keyframes packets, as requested by the MPEG-TS format. The select
option is applied to F<out.aac> in order to make it contain only
audio packets.
ffmpeg -i ... -map 0 -flags +global_header -c:v libx264 -c:a aac -strict experimental
-f tee "[bsfs/v=dump_extra]out.ts|[movflags=+faststart]out.mp4|[select=a]out.aac"
=back
Note: some codecs may need different options depending on the output format;
the auto-detection of this can not work with the tee muxer. The main example
is the B<global_header> flag.
=head1 METADATA
FFmpeg is able to dump metadata from media files into a simple UTF-8-encoded
INI-like text file and then load it back using the metadata muxer/demuxer.
The file format is as follows:
=over 4
=item 1.
A file consists of a header and a number of metadata tags divided into sections,
each on its own line.
=item 2.
The header is a ';FFMETADATA' string, followed by a version number (now 1).
=item 3.
Metadata tags are of the form 'key=value'
=item 4.
Immediately after header follows global metadata
=item 5.
After global metadata there may be sections with per-stream/per-chapter
metadata.
=item 6.
A section starts with the section name in uppercase (i.e. STREAM or CHAPTER) in
brackets ('[', ']') and ends with next section or end of file.
=item 7.
At the beginning of a chapter section there may be an optional timebase to be
used for start/end values. It must be in form 'TIMEBASE=num/den', where num and
den are integers. If the timebase is missing then start/end times are assumed to
be in milliseconds.
Next a chapter section must contain chapter start and end times in form
'START=num', 'END=num', where num is a positive integer.
=item 8.
Empty lines and lines starting with ';' or '#' are ignored.
=item 9.
Metadata keys or values containing special characters ('=', ';', '#', '\' and a
newline) must be escaped with a backslash '\'.
=item 10.
Note that whitespace in metadata (e.g. foo = bar) is considered to be a part of
the tag (in the example above key is 'foo ', value is ' bar').
=back
A ffmetadata file might look like this:
;FFMETADATA1
title=bike\\shed
;this is a comment
artist=FFmpeg troll team
[CHAPTER]
TIMEBASE=1/1000
START=0
#chapter ends at 0:01:00
END=60000
title=chapter \#1
[STREAM]
title=multi\
line
By using the ffmetadata muxer and demuxer it is possible to extract
metadata from an input file to an ffmetadata file, and then transcode
the file into an output file with the edited ffmetadata file.
Extracting an ffmetadata file with F<ffmpeg> goes as follows:
ffmpeg -i INPUT -f ffmetadata FFMETADATAFILE
Reinserting edited metadata information from the FFMETADATAFILE file can
be done as:
ffmpeg -i INPUT -i FFMETADATAFILE -map_metadata 1 -codec copy OUTPUT
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-formats.texi
0,0 → 1,42
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Formats Documentation
@titlepage
@center @titlefont{FFmpeg Formats Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes the supported formats (muxers and demuxers)
provided by the libavformat library.
@c man end DESCRIPTION
@include formats.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavformat.html,libavformat}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-formats
@settitle FFmpeg formats
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-protocols.pod
0,0 → 1,1484
=head1 NAME
ffmpeg-protocols - FFmpeg protocols
=head1 DESCRIPTION
This document describes the input and output protocols provided by the
libavformat library.
=head1 PROTOCOLS
Protocols are configured elements in FFmpeg that enable access to
resources that require specific protocols.
When you configure your FFmpeg build, all the supported protocols are
enabled by default. You can list all available ones using the
configure option "--list-protocols".
You can disable all the protocols using the configure option
"--disable-protocols", and selectively enable a protocol using the
option "--enable-protocol=I<PROTOCOL>", or you can disable a
particular protocol using the option
"--disable-protocol=I<PROTOCOL>".
The option "-protocols" of the ff* tools will display the list of
supported protocols.
A description of the currently available protocols follows.
=head2 bluray
Read BluRay playlist.
The accepted options are:
=over 4
=item B<angle>
BluRay angle
=item B<chapter>
Start chapter (1...N)
=item B<playlist>
Playlist to read (BDMV/PLAYLIST/?????.mpls)
=back
Examples:
Read longest playlist from BluRay mounted to /mnt/bluray:
bluray:/mnt/bluray
Read angle 2 of playlist 4 from BluRay mounted to /mnt/bluray, start from chapter 2:
-playlist 4 -angle 2 -chapter 2 bluray:/mnt/bluray
=head2 cache
Caching wrapper for input stream.
Cache the input stream to temporary file. It brings seeking capability to live streams.
cache:<URL>
=head2 concat
Physical concatenation protocol.
Allow to read and seek from many resource in sequence as if they were
a unique resource.
A URL accepted by this protocol has the syntax:
concat:<URL1>|<URL2>|...|<URLN>
where I<URL1>, I<URL2>, ..., I<URLN> are the urls of the
resource to be concatenated, each one possibly specifying a distinct
protocol.
For example to read a sequence of files F<split1.mpeg>,
F<split2.mpeg>, F<split3.mpeg> with B<ffplay> use the
command:
ffplay concat:split1.mpeg\|split2.mpeg\|split3.mpeg
Note that you may need to escape the character "|" which is special for
many shells.
=head2 crypto
AES-encrypted stream reading protocol.
The accepted options are:
=over 4
=item B<key>
Set the AES decryption key binary block from given hexadecimal representation.
=item B<iv>
Set the AES decryption initialization vector binary block from given hexadecimal representation.
=back
Accepted URL formats:
crypto:<URL>
crypto+<URL>
=head2 data
Data in-line in the URI. See E<lt>B<http://en.wikipedia.org/wiki/Data_URI_scheme>E<gt>.
For example, to convert a GIF file given inline with B<ffmpeg>:
ffmpeg -i "data:image/gif;base64,R0lGODdhCAAIAMIEAAAAAAAA//8AAP//AP///////////////ywAAAAACAAIAAADF0gEDLojDgdGiJdJqUX02iB4E8Q9jUMkADs=" smiley.png
=head2 file
File access protocol.
Allow to read from or read to a file.
For example to read from a file F<input.mpeg> with B<ffmpeg>
use the command:
ffmpeg -i file:input.mpeg output.mpeg
The ff* tools default to the file protocol, that is a resource
specified with the name "FILE.mpeg" is interpreted as the URL
"file:FILE.mpeg".
This protocol accepts the following options:
=over 4
=item B<truncate>
Truncate existing files on write, if set to 1. A value of 0 prevents
truncating. Default value is 1.
=item B<blocksize>
Set I/O operation maximum block size, in bytes. Default value is
C<INT_MAX>, which results in not limiting the requested block size.
Setting this value reasonably low improves user termination request reaction
time, which is valuable for files on slow medium.
=back
=head2 ftp
FTP (File Transfer Protocol).
Allow to read from or write to remote resources using FTP protocol.
Following syntax is required.
ftp://[user[:password]@]server[:port]/path/to/remote/resource.mpeg
This protocol accepts the following options.
=over 4
=item B<timeout>
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout is
not specified.
=item B<ftp-anonymous-password>
Password used when login as anonymous user. Typically an e-mail address
should be used.
=item B<ftp-write-seekable>
Control seekability of connection during encoding. If set to 1 the
resource is supposed to be seekable, if set to 0 it is assumed not
to be seekable. Default value is 0.
=back
NOTE: Protocol can be used as output, but it is recommended to not do
it, unless special care is taken (tests, customized server configuration
etc.). Different FTP servers behave in different way during seek
operation. ff* tools may produce incomplete content due to server limitations.
=head2 gopher
Gopher protocol.
=head2 hls
Read Apple HTTP Live Streaming compliant segmented stream as
a uniform one. The M3U8 playlists describing the segments can be
remote HTTP resources or local files, accessed using the standard
file protocol.
The nested protocol is declared by specifying
"+I<proto>" after the hls URI scheme name, where I<proto>
is either "file" or "http".
hls+http://host/path/to/remote/resource.m3u8
hls+file://path/to/local/resource.m3u8
Using this protocol is discouraged - the hls demuxer should work
just as well (if not, please report the issues) and is more complete.
To use the hls demuxer instead, simply use the direct URLs to the
m3u8 files.
=head2 http
HTTP (Hyper Text Transfer Protocol).
This protocol accepts the following options.
=over 4
=item B<seekable>
Control seekability of connection. If set to 1 the resource is
supposed to be seekable, if set to 0 it is assumed not to be seekable,
if set to -1 it will try to autodetect if it is seekable. Default
value is -1.
=item B<chunked_post>
If set to 1 use chunked transfer-encoding for posts, default is 1.
=item B<headers>
Set custom HTTP headers, can override built in default headers. The
value must be a string encoding the headers.
=item B<content_type>
Force a content type.
=item B<user-agent>
Override User-Agent header. If not specified the protocol will use a
string describing the libavformat build.
=item B<multiple_requests>
Use persistent connections if set to 1. By default it is 0.
=item B<post_data>
Set custom HTTP post data.
=item B<timeout>
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout is
not specified.
=item B<mime_type>
Set MIME type.
=item B<icy>
If set to 1 request ICY (SHOUTcast) metadata from the server. If the server
supports this, the metadata has to be retrieved by the application by reading
the B<icy_metadata_headers> and B<icy_metadata_packet> options.
The default is 0.
=item B<icy_metadata_headers>
If the server supports ICY metadata, this contains the ICY specific HTTP reply
headers, separated with newline characters.
=item B<icy_metadata_packet>
If the server supports ICY metadata, and B<icy> was set to 1, this
contains the last non-empty metadata packet sent by the server.
=item B<cookies>
Set the cookies to be sent in future requests. The format of each cookie is the
same as the value of a Set-Cookie HTTP response field. Multiple cookies can be
delimited by a newline character.
=back
=head3 HTTP Cookies
Some HTTP requests will be denied unless cookie values are passed in with the
request. The B<cookies> option allows these cookies to be specified. At
the very least, each cookie must specify a value along with a path and domain.
HTTP requests that match both the domain and path will automatically include the
cookie value in the HTTP Cookie header field. Multiple cookies can be delimited
by a newline.
The required syntax to play a stream specifying a cookie is:
ffplay -cookies "nlqptid=nltid=tsn; path=/; domain=somedomain.com;" http://somedomain.com/somestream.m3u8
=head2 mmst
MMS (Microsoft Media Server) protocol over TCP.
=head2 mmsh
MMS (Microsoft Media Server) protocol over HTTP.
The required syntax is:
mmsh://<server>[:<port>][/<app>][/<playpath>]
=head2 md5
MD5 output protocol.
Computes the MD5 hash of the data to be written, and on close writes
this to the designated output or stdout if none is specified. It can
be used to test muxers without writing an actual file.
Some examples follow.
# Write the MD5 hash of the encoded AVI file to the file output.avi.md5.
ffmpeg -i input.flv -f avi -y md5:output.avi.md5
# Write the MD5 hash of the encoded AVI file to stdout.
ffmpeg -i input.flv -f avi -y md5:
Note that some formats (typically MOV) require the output protocol to
be seekable, so they will fail with the MD5 output protocol.
=head2 pipe
UNIX pipe access protocol.
Allow to read and write from UNIX pipes.
The accepted syntax is:
pipe:[<number>]
I<number> is the number corresponding to the file descriptor of the
pipe (e.g. 0 for stdin, 1 for stdout, 2 for stderr). If I<number>
is not specified, by default the stdout file descriptor will be used
for writing, stdin for reading.
For example to read from stdin with B<ffmpeg>:
cat test.wav | ffmpeg -i pipe:0
# ...this is the same as...
cat test.wav | ffmpeg -i pipe:
For writing to stdout with B<ffmpeg>:
ffmpeg -i test.wav -f avi pipe:1 | cat > test.avi
# ...this is the same as...
ffmpeg -i test.wav -f avi pipe: | cat > test.avi
This protocol accepts the following options:
=over 4
=item B<blocksize>
Set I/O operation maximum block size, in bytes. Default value is
C<INT_MAX>, which results in not limiting the requested block size.
Setting this value reasonably low improves user termination request reaction
time, which is valuable if data transmission is slow.
=back
Note that some formats (typically MOV), require the output protocol to
be seekable, so they will fail with the pipe output protocol.
=head2 rtmp
Real-Time Messaging Protocol.
The Real-Time Messaging Protocol (RTMP) is used for streaming multimedia
content across a TCP/IP network.
The required syntax is:
rtmp://[<username>:<password>@]<server>[:<port>][/<app>][/<instance>][/<playpath>]
The accepted parameters are:
=over 4
=item B<username>
An optional username (mostly for publishing).
=item B<password>
An optional password (mostly for publishing).
=item B<server>
The address of the RTMP server.
=item B<port>
The number of the TCP port to use (by default is 1935).
=item B<app>
It is the name of the application to access. It usually corresponds to
the path where the application is installed on the RTMP server
(e.g. F</ondemand/>, F</flash/live/>, etc.). You can override
the value parsed from the URI through the C<rtmp_app> option, too.
=item B<playpath>
It is the path or name of the resource to play with reference to the
application specified in I<app>, may be prefixed by "mp4:". You
can override the value parsed from the URI through the C<rtmp_playpath>
option, too.
=item B<listen>
Act as a server, listening for an incoming connection.
=item B<timeout>
Maximum time to wait for the incoming connection. Implies listen.
=back
Additionally, the following parameters can be set via command line options
(or in code via C<AVOption>s):
=over 4
=item B<rtmp_app>
Name of application to connect on the RTMP server. This option
overrides the parameter specified in the URI.
=item B<rtmp_buffer>
Set the client buffer time in milliseconds. The default is 3000.
=item B<rtmp_conn>
Extra arbitrary AMF connection parameters, parsed from a string,
e.g. like C<B:1 S:authMe O:1 NN:code:1.23 NS:flag:ok O:0>.
Each value is prefixed by a single character denoting the type,
B for Boolean, N for number, S for string, O for object, or Z for null,
followed by a colon. For Booleans the data must be either 0 or 1 for
FALSE or TRUE, respectively. Likewise for Objects the data must be 0 or
1 to end or begin an object, respectively. Data items in subobjects may
be named, by prefixing the type with 'N' and specifying the name before
the value (i.e. C<NB:myFlag:1>). This option may be used multiple
times to construct arbitrary AMF sequences.
=item B<rtmp_flashver>
Version of the Flash plugin used to run the SWF player. The default
is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
E<lt>libavformat versionE<gt>).)
=item B<rtmp_flush_interval>
Number of packets flushed in the same request (RTMPT only). The default
is 10.
=item B<rtmp_live>
Specify that the media is a live stream. No resuming or seeking in
live streams is possible. The default value is C<any>, which means the
subscriber first tries to play the live stream specified in the
playpath. If a live stream of that name is not found, it plays the
recorded stream. The other possible values are C<live> and
C<recorded>.
=item B<rtmp_pageurl>
URL of the web page in which the media was embedded. By default no
value will be sent.
=item B<rtmp_playpath>
Stream identifier to play or to publish. This option overrides the
parameter specified in the URI.
=item B<rtmp_subscribe>
Name of live stream to subscribe to. By default no value will be sent.
It is only sent if the option is specified or if rtmp_live
is set to live.
=item B<rtmp_swfhash>
SHA256 hash of the decompressed SWF file (32 bytes).
=item B<rtmp_swfsize>
Size of the decompressed SWF file, required for SWFVerification.
=item B<rtmp_swfurl>
URL of the SWF player for the media. By default no value will be sent.
=item B<rtmp_swfverify>
URL to player swf file, compute hash/size automatically.
=item B<rtmp_tcurl>
URL of the target stream. Defaults to proto://host[:port]/app.
=back
For example to read with B<ffplay> a multimedia resource named
"sample" from the application "vod" from an RTMP server "myserver":
ffplay rtmp://myserver/vod/sample
To publish to a password protected server, passing the playpath and
app names separately:
ffmpeg -re -i <input> -f flv -rtmp_playpath some/long/path -rtmp_app long/app/name rtmp://username:password@myserver/
=head2 rtmpe
Encrypted Real-Time Messaging Protocol.
The Encrypted Real-Time Messaging Protocol (RTMPE) is used for
streaming multimedia content within standard cryptographic primitives,
consisting of Diffie-Hellman key exchange and HMACSHA256, generating
a pair of RC4 keys.
=head2 rtmps
Real-Time Messaging Protocol over a secure SSL connection.
The Real-Time Messaging Protocol (RTMPS) is used for streaming
multimedia content across an encrypted connection.
=head2 rtmpt
Real-Time Messaging Protocol tunneled through HTTP.
The Real-Time Messaging Protocol tunneled through HTTP (RTMPT) is used
for streaming multimedia content within HTTP requests to traverse
firewalls.
=head2 rtmpte
Encrypted Real-Time Messaging Protocol tunneled through HTTP.
The Encrypted Real-Time Messaging Protocol tunneled through HTTP (RTMPTE)
is used for streaming multimedia content within HTTP requests to traverse
firewalls.
=head2 rtmpts
Real-Time Messaging Protocol tunneled through HTTPS.
The Real-Time Messaging Protocol tunneled through HTTPS (RTMPTS) is used
for streaming multimedia content within HTTPS requests to traverse
firewalls.
=head2 libssh
Secure File Transfer Protocol via libssh
Allow to read from or write to remote resources using SFTP protocol.
Following syntax is required.
sftp://[user[:password]@]server[:port]/path/to/remote/resource.mpeg
This protocol accepts the following options.
=over 4
=item B<timeout>
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout
is not specified.
=item B<truncate>
Truncate existing files on write, if set to 1. A value of 0 prevents
truncating. Default value is 1.
=back
Example: Play a file stored on remote server.
ffplay sftp://user:password@server_address:22/home/user/resource.mpeg
=head2 librtmp rtmp, rtmpe, rtmps, rtmpt, rtmpte
Real-Time Messaging Protocol and its variants supported through
librtmp.
Requires the presence of the librtmp headers and library during
configuration. You need to explicitly configure the build with
"--enable-librtmp". If enabled this will replace the native RTMP
protocol.
This protocol provides most client functions and a few server
functions needed to support RTMP, RTMP tunneled in HTTP (RTMPT),
encrypted RTMP (RTMPE), RTMP over SSL/TLS (RTMPS) and tunneled
variants of these encrypted types (RTMPTE, RTMPTS).
The required syntax is:
<rtmp_proto>://<server>[:<port>][/<app>][/<playpath>] <options>
where I<rtmp_proto> is one of the strings "rtmp", "rtmpt", "rtmpe",
"rtmps", "rtmpte", "rtmpts" corresponding to each RTMP variant, and
I<server>, I<port>, I<app> and I<playpath> have the same
meaning as specified for the RTMP native protocol.
I<options> contains a list of space-separated options of the form
I<key>=I<val>.
See the librtmp manual page (man 3 librtmp) for more information.
For example, to stream a file in real-time to an RTMP server using
B<ffmpeg>:
ffmpeg -re -i myfile -f flv rtmp://myserver/live/mystream
To play the same stream using B<ffplay>:
ffplay "rtmp://myserver/live/mystream live=1"
=head2 rtp
Real-time Transport Protocol.
The required syntax for an RTP URL is:
rtp://I<hostname>[:I<port>][?I<option>=I<val>...]
I<port> specifies the RTP port to use.
The following URL options are supported:
=over 4
=item B<ttl=>I<n>
Set the TTL (Time-To-Live) value (for multicast only).
=item B<rtcpport=>I<n>
Set the remote RTCP port to I<n>.
=item B<localrtpport=>I<n>
Set the local RTP port to I<n>.
=item B<localrtcpport=>I<n>B<'>
Set the local RTCP port to I<n>.
=item B<pkt_size=>I<n>
Set max packet size (in bytes) to I<n>.
=item B<connect=0|1>
Do a C<connect()> on the UDP socket (if set to 1) or not (if set
to 0).
=item B<sources=>I<ip>B<[,>I<ip>B<]>
List allowed source IP addresses.
=item B<block=>I<ip>B<[,>I<ip>B<]>
List disallowed (blocked) source IP addresses.
=item B<write_to_source=0|1>
Send packets to the source address of the latest received packet (if
set to 1) or to a default remote address (if set to 0).
=item B<localport=>I<n>
Set the local RTP port to I<n>.
This is a deprecated option. Instead, B<localrtpport> should be
used.
=back
Important notes:
=over 4
=item 1.
If B<rtcpport> is not set the RTCP port will be set to the RTP
port value plus 1.
=item 2.
If B<localrtpport> (the local RTP port) is not set any available
port will be used for the local RTP and RTCP ports.
=item 3.
If B<localrtcpport> (the local RTCP port) is not set it will be
set to the the local RTP port value plus 1.
=back
=head2 rtsp
RTSP is not technically a protocol handler in libavformat, it is a demuxer
and muxer. The demuxer supports both normal RTSP (with data transferred
over RTP; this is used by e.g. Apple and Microsoft) and Real-RTSP (with
data transferred over RDT).
The muxer can be used to send a stream using RTSP ANNOUNCE to a server
supporting it (currently Darwin Streaming Server and Mischa Spiegelmock's
E<lt>B<http://github.com/revmischa/rtsp-server>E<gt>).
The required syntax for a RTSP url is:
rtsp://<hostname>[:<port>]/<path>
The following options (set on the B<ffmpeg>/B<ffplay> command
line, or set in code via C<AVOption>s or in C<avformat_open_input>),
are supported:
Flags for C<rtsp_transport>:
=over 4
=item B<udp>
Use UDP as lower transport protocol.
=item B<tcp>
Use TCP (interleaving within the RTSP control channel) as lower
transport protocol.
=item B<udp_multicast>
Use UDP multicast as lower transport protocol.
=item B<http>
Use HTTP tunneling as lower transport protocol, which is useful for
passing proxies.
=back
Multiple lower transport protocols may be specified, in that case they are
tried one at a time (if the setup of one fails, the next one is tried).
For the muxer, only the C<tcp> and C<udp> options are supported.
Flags for C<rtsp_flags>:
=over 4
=item B<filter_src>
Accept packets only from negotiated peer address and port.
=item B<listen>
Act as a server, listening for an incoming connection.
=back
When receiving data over UDP, the demuxer tries to reorder received packets
(since they may arrive out of order, or packets may get lost totally). This
can be disabled by setting the maximum demuxing delay to zero (via
the C<max_delay> field of AVFormatContext).
When watching multi-bitrate Real-RTSP streams with B<ffplay>, the
streams to display can be chosen with C<-vst> I<n> and
C<-ast> I<n> for video and audio respectively, and can be switched
on the fly by pressing C<v> and C<a>.
Example command lines:
To watch a stream over UDP, with a max reordering delay of 0.5 seconds:
ffplay -max_delay 500000 -rtsp_transport udp rtsp://server/video.mp4
To watch a stream tunneled over HTTP:
ffplay -rtsp_transport http rtsp://server/video.mp4
To send a stream in realtime to a RTSP server, for others to watch:
ffmpeg -re -i <input> -f rtsp -muxdelay 0.1 rtsp://server/live.sdp
To receive a stream in realtime:
ffmpeg -rtsp_flags listen -i rtsp://ownaddress/live.sdp <output>
=over 4
=item B<stimeout>
Socket IO timeout in micro seconds.
=back
=head2 sap
Session Announcement Protocol (RFC 2974). This is not technically a
protocol handler in libavformat, it is a muxer and demuxer.
It is used for signalling of RTP streams, by announcing the SDP for the
streams regularly on a separate port.
=head3 Muxer
The syntax for a SAP url given to the muxer is:
sap://<destination>[:<port>][?<options>]
The RTP packets are sent to I<destination> on port I<port>,
or to port 5004 if no port is specified.
I<options> is a C<&>-separated list. The following options
are supported:
=over 4
=item B<announce_addr=>I<address>
Specify the destination IP address for sending the announcements to.
If omitted, the announcements are sent to the commonly used SAP
announcement multicast address 224.2.127.254 (sap.mcast.net), or
ff0e::2:7ffe if I<destination> is an IPv6 address.
=item B<announce_port=>I<port>
Specify the port to send the announcements on, defaults to
9875 if not specified.
=item B<ttl=>I<ttl>
Specify the time to live value for the announcements and RTP packets,
defaults to 255.
=item B<same_port=>I<0|1>
If set to 1, send all RTP streams on the same port pair. If zero (the
default), all streams are sent on unique ports, with each stream on a
port 2 numbers higher than the previous.
VLC/Live555 requires this to be set to 1, to be able to receive the stream.
The RTP stack in libavformat for receiving requires all streams to be sent
on unique ports.
=back
Example command lines follow.
To broadcast a stream on the local subnet, for watching in VLC:
ffmpeg -re -i <input> -f sap sap://224.0.0.255?same_port=1
Similarly, for watching in B<ffplay>:
ffmpeg -re -i <input> -f sap sap://224.0.0.255
And for watching in B<ffplay>, over IPv6:
ffmpeg -re -i <input> -f sap sap://[ff0e::1:2:3:4]
=head3 Demuxer
The syntax for a SAP url given to the demuxer is:
sap://[<address>][:<port>]
I<address> is the multicast address to listen for announcements on,
if omitted, the default 224.2.127.254 (sap.mcast.net) is used. I<port>
is the port that is listened on, 9875 if omitted.
The demuxers listens for announcements on the given address and port.
Once an announcement is received, it tries to receive that particular stream.
Example command lines follow.
To play back the first stream announced on the normal SAP multicast address:
ffplay sap://
To play back the first stream announced on one the default IPv6 SAP multicast address:
ffplay sap://[ff0e::2:7ffe]
=head2 sctp
Stream Control Transmission Protocol.
The accepted URL syntax is:
sctp://<host>:<port>[?<options>]
The protocol accepts the following options:
=over 4
=item B<listen>
If set to any value, listen for an incoming connection. Outgoing connection is done by default.
=item B<max_streams>
Set the maximum number of streams. By default no limit is set.
=back
=head2 srtp
Secure Real-time Transport Protocol.
The accepted options are:
=over 4
=item B<srtp_in_suite>
=item B<srtp_out_suite>
Select input and output encoding suites.
Supported values:
=over 4
=item B<AES_CM_128_HMAC_SHA1_80>
=item B<SRTP_AES128_CM_HMAC_SHA1_80>
=item B<AES_CM_128_HMAC_SHA1_32>
=item B<SRTP_AES128_CM_HMAC_SHA1_32>
=back
=item B<srtp_in_params>
=item B<srtp_out_params>
Set input and output encoding parameters, which are expressed by a
base64-encoded representation of a binary block. The first 16 bytes of
this binary block are used as master key, the following 14 bytes are
used as master salt.
=back
=head2 tcp
Trasmission Control Protocol.
The required syntax for a TCP url is:
tcp://<hostname>:<port>[?<options>]
=over 4
=item B<listen>
Listen for an incoming connection
=item B<timeout=>I<microseconds>
In read mode: if no data arrived in more than this time interval, raise error.
In write mode: if socket cannot be written in more than this time interval, raise error.
This also sets timeout on TCP connection establishing.
ffmpeg -i <input> -f <format> tcp://<hostname>:<port>?listen
ffplay tcp://<hostname>:<port>
=back
=head2 tls
Transport Layer Security (TLS) / Secure Sockets Layer (SSL)
The required syntax for a TLS/SSL url is:
tls://<hostname>:<port>[?<options>]
The following parameters can be set via command line options
(or in code via C<AVOption>s):
=over 4
=item B<ca_file, cafile=>I<filename>
A file containing certificate authority (CA) root certificates to treat
as trusted. If the linked TLS library contains a default this might not
need to be specified for verification to work, but not all libraries and
setups have defaults built in.
The file must be in OpenSSL PEM format.
=item B<tls_verify=>I<1|0>
If enabled, try to verify the peer that we are communicating with.
Note, if using OpenSSL, this currently only makes sure that the
peer certificate is signed by one of the root certificates in the CA
database, but it does not validate that the certificate actually
matches the host name we are trying to connect to. (With GnuTLS,
the host name is validated as well.)
This is disabled by default since it requires a CA database to be
provided by the caller in many cases.
=item B<cert_file, cert=>I<filename>
A file containing a certificate to use in the handshake with the peer.
(When operating as server, in listen mode, this is more often required
by the peer, while client certificates only are mandated in certain
setups.)
=item B<key_file, key=>I<filename>
A file containing the private key for the certificate.
=item B<listen=>I<1|0>
If enabled, listen for connections on the provided port, and assume
the server role in the handshake instead of the client role.
=back
Example command lines:
To create a TLS/SSL server that serves an input stream.
ffmpeg -i <input> -f <format> tls://<hostname>:<port>?listen&cert=<server.crt>&key=<server.key>
To play back a stream from the TLS/SSL server using B<ffplay>:
ffplay tls://<hostname>:<port>
=head2 udp
User Datagram Protocol.
The required syntax for a UDP url is:
udp://<hostname>:<port>[?<options>]
I<options> contains a list of &-separated options of the form I<key>=I<val>.
In case threading is enabled on the system, a circular buffer is used
to store the incoming data, which allows to reduce loss of data due to
UDP socket buffer overruns. The I<fifo_size> and
I<overrun_nonfatal> options are related to this buffer.
The list of supported options follows.
=over 4
=item B<buffer_size=>I<size>
Set the UDP socket buffer size in bytes. This is used both for the
receiving and the sending buffer size.
=item B<localport=>I<port>
Override the local UDP port to bind with.
=item B<localaddr=>I<addr>
Choose the local IP address. This is useful e.g. if sending multicast
and the host has multiple interfaces, where the user can choose
which interface to send on by specifying the IP address of that interface.
=item B<pkt_size=>I<size>
Set the size in bytes of UDP packets.
=item B<reuse=>I<1|0>
Explicitly allow or disallow reusing UDP sockets.
=item B<ttl=>I<ttl>
Set the time to live value (for multicast only).
=item B<connect=>I<1|0>
Initialize the UDP socket with C<connect()>. In this case, the
destination address can't be changed with ff_udp_set_remote_url later.
If the destination address isn't known at the start, this option can
be specified in ff_udp_set_remote_url, too.
This allows finding out the source address for the packets with getsockname,
and makes writes return with AVERROR(ECONNREFUSED) if "destination
unreachable" is received.
For receiving, this gives the benefit of only receiving packets from
the specified peer address/port.
=item B<sources=>I<address>B<[,>I<address>B<]>
Only receive packets sent to the multicast group from one of the
specified sender IP addresses.
=item B<block=>I<address>B<[,>I<address>B<]>
Ignore packets sent to the multicast group from the specified
sender IP addresses.
=item B<fifo_size=>I<units>
Set the UDP receiving circular buffer size, expressed as a number of
packets with size of 188 bytes. If not specified defaults to 7*4096.
=item B<overrun_nonfatal=>I<1|0>
Survive in case of UDP receiving circular buffer overrun. Default
value is 0.
=item B<timeout=>I<microseconds>
In read mode: if no data arrived in more than this time interval, raise error.
=back
Some usage examples of the UDP protocol with B<ffmpeg> follow.
To stream over UDP to a remote endpoint:
ffmpeg -i <input> -f <format> udp://<hostname>:<port>
To stream in mpegts format over UDP using 188 sized UDP packets, using a large input buffer:
ffmpeg -i <input> -f mpegts udp://<hostname>:<port>?pkt_size=188&buffer_size=65535
To receive over UDP from a remote endpoint:
ffmpeg -i udp://[<multicast-address>]:<port>
=head2 unix
Unix local socket
The required syntax for a Unix socket URL is:
unix://<filepath>
The following parameters can be set via command line options
(or in code via C<AVOption>s):
=over 4
=item B<timeout>
Timeout in ms.
=item B<listen>
Create the Unix socket in listening mode.
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-protocols.texi
0,0 → 1,42
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Protocols Documentation
@titlepage
@center @titlefont{FFmpeg Protocols Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes the input and output protocols provided by the
libavformat library.
@c man end DESCRIPTION
@include protocols.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavformat.html,libavformat}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavformat(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-protocols
@settitle FFmpeg protocols
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-resampler.pod
0,0 → 1,401
=head1 NAME
ffmpeg-resampler - FFmpeg Resampler
=head1 DESCRIPTION
The FFmpeg resampler provides a high-level interface to the
libswresample library audio resampling utilities. In particular it
allows to perform audio resampling, audio channel layout rematrixing,
and convert audio format and packing layout.
=head1 RESAMPLER OPTIONS
The audio resampler supports the following named options.
Options may be set by specifying -I<option> I<value> in the
FFmpeg tools, I<option>=I<value> for the aresample filter,
by setting the value explicitly in the
C<SwrContext> options or using the F<libavutil/opt.h> API for
programmatic use.
=over 4
=item B<ich, in_channel_count>
Set the number of input channels. Default value is 0. Setting this
value is not mandatory if the corresponding channel layout
B<in_channel_layout> is set.
=item B<och, out_channel_count>
Set the number of output channels. Default value is 0. Setting this
value is not mandatory if the corresponding channel layout
B<out_channel_layout> is set.
=item B<uch, used_channel_count>
Set the number of used input channels. Default value is 0. This option is
only used for special remapping.
=item B<isr, in_sample_rate>
Set the input sample rate. Default value is 0.
=item B<osr, out_sample_rate>
Set the output sample rate. Default value is 0.
=item B<isf, in_sample_fmt>
Specify the input sample format. It is set by default to C<none>.
=item B<osf, out_sample_fmt>
Specify the output sample format. It is set by default to C<none>.
=item B<tsf, internal_sample_fmt>
Set the internal sample format. Default value is C<none>.
This will automatically be chosen when it is not explicitly set.
=item B<icl, in_channel_layout>
=item B<ocl, out_channel_layout>
Set the input/output channel layout.
See the Channel Layout section in the ffmpeg-utils(1) manual
for the required syntax.
=item B<clev, center_mix_level>
Set the center mix level. It is a value expressed in deciBel, and must be
in the interval [-32,32].
=item B<slev, surround_mix_level>
Set the surround mix level. It is a value expressed in deciBel, and must
be in the interval [-32,32].
=item B<lfe_mix_level>
Set LFE mix into non LFE level. It is used when there is a LFE input but no
LFE output. It is a value expressed in deciBel, and must
be in the interval [-32,32].
=item B<rmvol, rematrix_volume>
Set rematrix volume. Default value is 1.0.
=item B<rematrix_maxval>
Set maximum output value for rematrixing.
This can be used to prevent clipping vs. preventing volumn reduction
A value of 1.0 prevents cliping.
=item B<flags, swr_flags>
Set flags used by the converter. Default value is 0.
It supports the following individual flags:
=over 4
=item B<res>
force resampling, this flag forces resampling to be used even when the
input and output sample rates match.
=back
=item B<dither_scale>
Set the dither scale. Default value is 1.
=item B<dither_method>
Set dither method. Default value is 0.
Supported values:
=over 4
=item B<rectangular>
select rectangular dither
=item B<triangular>
select triangular dither
=item B<triangular_hp>
select triangular dither with high pass
=item B<lipshitz>
select lipshitz noise shaping dither
=item B<shibata>
select shibata noise shaping dither
=item B<low_shibata>
select low shibata noise shaping dither
=item B<high_shibata>
select high shibata noise shaping dither
=item B<f_weighted>
select f-weighted noise shaping dither
=item B<modified_e_weighted>
select modified-e-weighted noise shaping dither
=item B<improved_e_weighted>
select improved-e-weighted noise shaping dither
=back
=item B<resampler>
Set resampling engine. Default value is swr.
Supported values:
=over 4
=item B<swr>
select the native SW Resampler; filter options precision and cheby are not
applicable in this case.
=item B<soxr>
select the SoX Resampler (where available); compensation, and filter options
filter_size, phase_shift, filter_type & kaiser_beta, are not applicable in this
case.
=back
=item B<filter_size>
For swr only, set resampling filter size, default value is 32.
=item B<phase_shift>
For swr only, set resampling phase shift, default value is 10, and must be in
the interval [0,30].
=item B<linear_interp>
Use Linear Interpolation if set to 1, default value is 0.
=item B<cutoff>
Set cutoff frequency (swr: 6dB point; soxr: 0dB point) ratio; must be a float
value between 0 and 1. Default value is 0.97 with swr, and 0.91 with soxr
(which, with a sample-rate of 44100, preserves the entire audio band to 20kHz).
=item B<precision>
For soxr only, the precision in bits to which the resampled signal will be
calculated. The default value of 20 (which, with suitable dithering, is
appropriate for a destination bit-depth of 16) gives SoX's 'High Quality'; a
value of 28 gives SoX's 'Very High Quality'.
=item B<cheby>
For soxr only, selects passband rolloff none (Chebyshev) & higher-precision
approximation for 'irrational' ratios. Default value is 0.
=item B<async>
For swr only, simple 1 parameter audio sync to timestamps using stretching,
squeezing, filling and trimming. Setting this to 1 will enable filling and
trimming, larger values represent the maximum amount in samples that the data
may be stretched or squeezed for each second.
Default value is 0, thus no compensation is applied to make the samples match
the audio timestamps.
=item B<first_pts>
For swr only, assume the first pts should be this value. The time unit is 1 / sample rate.
This allows for padding/trimming at the start of stream. By default, no
assumption is made about the first frame's expected pts, so no padding or
trimming is done. For example, this could be set to 0 to pad the beginning with
silence if an audio stream starts after the video stream or to trim any samples
with a negative pts due to encoder delay.
=item B<min_comp>
For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger stretching/squeezing/filling or trimming of the
data to make it match the timestamps. The default is that
stretching/squeezing/filling and trimming is disabled
(B<min_comp> = C<FLT_MAX>).
=item B<min_hard_comp>
For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger adding/dropping samples to make it match the
timestamps. This option effectively is a threshold to select between
hard (trim/fill) and soft (squeeze/stretch) compensation. Note that
all compensation is by default disabled through B<min_comp>.
The default is 0.1.
=item B<comp_duration>
For swr only, set duration (in seconds) over which data is stretched/squeezed
to make it match the timestamps. Must be a non-negative double float value,
default value is 1.0.
=item B<max_soft_comp>
For swr only, set maximum factor by which data is stretched/squeezed to make it
match the timestamps. Must be a non-negative double float value, default value
is 0.
=item B<matrix_encoding>
Select matrixed stereo encoding.
It accepts the following values:
=over 4
=item B<none>
select none
=item B<dolby>
select Dolby
=item B<dplii>
select Dolby Pro Logic II
=back
Default value is C<none>.
=item B<filter_type>
For swr only, select resampling filter type. This only affects resampling
operations.
It accepts the following values:
=over 4
=item B<cubic>
select cubic
=item B<blackman_nuttall>
select Blackman Nuttall Windowed Sinc
=item B<kaiser>
select Kaiser Windowed Sinc
=back
=item B<kaiser_beta>
For swr only, set Kaiser Window Beta value. Must be an integer in the
interval [2,16], default value is 9.
=item B<output_sample_bits>
For swr only, set number of used output sample bits for dithering. Must be an integer in the
interval [0,64], default value is 0, which means it's not used.
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswresample(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-resampler.texi
0,0 → 1,44
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Resampler Documentation
@titlepage
@center @titlefont{FFmpeg Resampler Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The FFmpeg resampler provides a high-level interface to the
libswresample library audio resampling utilities. In particular it
allows to perform audio resampling, audio channel layout rematrixing,
and convert audio format and packing layout.
@c man end DESCRIPTION
@include resampler.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libswresample.html,libswresample}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswresample(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-resampler
@settitle FFmpeg Resampler
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-scaler.pod
0,0 → 1,229
=head1 NAME
ffmpeg-scaler - FFmpeg video scaling and pixel format converter
=head1 DESCRIPTION
The FFmpeg rescaler provides a high-level interface to the libswscale
library image conversion utilities. In particular it allows to perform
image rescaling and pixel format conversion.
=head1 SCALER OPTIONS
The video scaler supports the following named options.
Options may be set by specifying -I<option> I<value> in the
FFmpeg tools. For programmatic use, they can be set explicitly in the
C<SwsContext> options or through the F<libavutil/opt.h> API.
=over 4
=item B<sws_flags>
Set the scaler flags. This is also used to set the scaling
algorithm. Only a single algorithm should be selected.
It accepts the following values:
=over 4
=item B<fast_bilinear>
Select fast bilinear scaling algorithm.
=item B<bilinear>
Select bilinear scaling algorithm.
=item B<bicubic>
Select bicubic scaling algorithm.
=item B<experimental>
Select experimental scaling algorithm.
=item B<neighbor>
Select nearest neighbor rescaling algorithm.
=item B<area>
Select averaging area rescaling algorithm.
=item B<bicubiclin>
Select bicubic scaling algorithm for the luma component, bilinear for
chroma components.
=item B<gauss>
Select Gaussian rescaling algorithm.
=item B<sinc>
Select sinc rescaling algorithm.
=item B<lanczos>
Select lanczos rescaling algorithm.
=item B<spline>
Select natural bicubic spline rescaling algorithm.
=item B<print_info>
Enable printing/debug logging.
=item B<accurate_rnd>
Enable accurate rounding.
=item B<full_chroma_int>
Enable full chroma interpolation.
=item B<full_chroma_inp>
Select full chroma input.
=item B<bitexact>
Enable bitexact output.
=back
=item B<srcw>
Set source width.
=item B<srch>
Set source height.
=item B<dstw>
Set destination width.
=item B<dsth>
Set destination height.
=item B<src_format>
Set source pixel format (must be expressed as an integer).
=item B<dst_format>
Set destination pixel format (must be expressed as an integer).
=item B<src_range>
Select source range.
=item B<dst_range>
Select destination range.
=item B<param0, param1>
Set scaling algorithm parameters. The specified values are specific of
some scaling algorithms and ignored by others. The specified values
are floating point number values.
=item B<sws_dither>
Set the dithering algorithm. Accepts one of the following
values. Default value is B<auto>.
=over 4
=item B<auto>
automatic choice
=item B<none>
no dithering
=item B<bayer>
bayer dither
=item B<ed>
error diffusion dither
=back
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswscale(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-scaler.texi
0,0 → 1,43
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Scaler Documentation
@titlepage
@center @titlefont{FFmpeg Scaler Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The FFmpeg rescaler provides a high-level interface to the libswscale
library image conversion utilities. In particular it allows to perform
image rescaling and pixel format conversion.
@c man end DESCRIPTION
@include scaler.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libswscale.html,libswscale}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libswscale(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-scaler
@settitle FFmpeg video scaling and pixel format converter
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-utils.pod
0,0 → 1,1851
=head1 NAME
ffmpeg-utils - FFmpeg utilities
=head1 DESCRIPTION
This document describes some generic features and utilities provided
by the libavutil library.
=head1 SYNTAX
This section documents the syntax and formats employed by the FFmpeg
libraries and tools.
=head2 Quoting and escaping
FFmpeg adopts the following quoting and escaping mechanism, unless
explicitly specified. The following rules are applied:
=over 4
=item *
C<'> and C<\> are special characters (respectively used for
quoting and escaping). In addition to them, there might be other
special characters depending on the specific syntax where the escaping
and quoting are employed.
=item *
A special character is escaped by prefixing it with a '\'.
=item *
All characters enclosed between '' are included literally in the
parsed string. The quote character C<'> itself cannot be quoted,
so you may need to close the quote and escape it.
=item *
Leading and trailing whitespaces, unless escaped or quoted, are
removed from the parsed string.
=back
Note that you may need to add a second level of escaping when using
the command line or a script, which depends on the syntax of the
adopted shell language.
The function C<av_get_token> defined in
F<libavutil/avstring.h> can be used to parse a token quoted or
escaped according to the rules defined above.
The tool F<tools/ffescape> in the FFmpeg source tree can be used
to automatically quote or escape a string in a script.
=head3 Examples
=over 4
=item *
Escape the string C<Crime d'Amour> containing the C<'> special
character:
Crime d\'Amour
=item *
The string above contains a quote, so the C<'> needs to be escaped
when quoting it:
'Crime d'\''Amour'
=item *
Include leading or trailing whitespaces using quoting:
' this string starts and ends with whitespaces '
=item *
Escaping and quoting can be mixed together:
' The string '\'string\'' is a string '
=item *
To include a literal C<\> you can use either escaping or quoting:
'c:\foo' can be written as c:\\foo
=back
=head2 Date
The accepted syntax is:
[(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH:MM:SS[.m...]]])|(HHMMSS[.m...]]]))[Z]
now
If the value is "now" it takes the current time.
Time is local time unless Z is appended, in which case it is
interpreted as UTC.
If the year-month-day part is not specified it takes the current
year-month-day.
=head2 Time duration
There are two accepted syntaxes for expressing time duration.
[-][<HH>:]<MM>:<SS>[.<m>...]
I<HH> expresses the number of hours, I<MM> the number of minutes
for a maximum of 2 digits, and I<SS> the number of seconds for a
maximum of 2 digits. The I<m> at the end expresses decimal value for
I<SS>.
I<or>
[-]<S>+[.<m>...]
I<S> expresses the number of seconds, with the optional decimal part
I<m>.
In both expressions, the optional B<-> indicates negative duration.
=head3 Examples
The following examples are all valid time duration:
=over 4
=item B<55>
55 seconds
=item B<12:03:45>
12 hours, 03 minutes and 45 seconds
=item B<23.189>
23.189 seconds
=back
=head2 Video size
Specify the size of the sourced video, it may be a string of the form
I<width>xI<height>, or the name of a size abbreviation.
The following abbreviations are recognized:
=over 4
=item B<ntsc>
720x480
=item B<pal>
720x576
=item B<qntsc>
352x240
=item B<qpal>
352x288
=item B<sntsc>
640x480
=item B<spal>
768x576
=item B<film>
352x240
=item B<ntsc-film>
352x240
=item B<sqcif>
128x96
=item B<qcif>
176x144
=item B<cif>
352x288
=item B<4cif>
704x576
=item B<16cif>
1408x1152
=item B<qqvga>
160x120
=item B<qvga>
320x240
=item B<vga>
640x480
=item B<svga>
800x600
=item B<xga>
1024x768
=item B<uxga>
1600x1200
=item B<qxga>
2048x1536
=item B<sxga>
1280x1024
=item B<qsxga>
2560x2048
=item B<hsxga>
5120x4096
=item B<wvga>
852x480
=item B<wxga>
1366x768
=item B<wsxga>
1600x1024
=item B<wuxga>
1920x1200
=item B<woxga>
2560x1600
=item B<wqsxga>
3200x2048
=item B<wquxga>
3840x2400
=item B<whsxga>
6400x4096
=item B<whuxga>
7680x4800
=item B<cga>
320x200
=item B<ega>
640x350
=item B<hd480>
852x480
=item B<hd720>
1280x720
=item B<hd1080>
1920x1080
=item B<2k>
2048x1080
=item B<2kflat>
1998x1080
=item B<2kscope>
2048x858
=item B<4k>
4096x2160
=item B<4kflat>
3996x2160
=item B<4kscope>
4096x1716
=item B<nhd>
640x360
=item B<hqvga>
240x160
=item B<wqvga>
400x240
=item B<fwqvga>
432x240
=item B<hvga>
480x320
=item B<qhd>
960x540
=back
=head2 Video rate
Specify the frame rate of a video, expressed as the number of frames
generated per second. It has to be a string in the format
I<frame_rate_num>/I<frame_rate_den>, an integer number, a float
number or a valid video frame rate abbreviation.
The following abbreviations are recognized:
=over 4
=item B<ntsc>
30000/1001
=item B<pal>
25/1
=item B<qntsc>
30000/1001
=item B<qpal>
25/1
=item B<sntsc>
30000/1001
=item B<spal>
25/1
=item B<film>
24/1
=item B<ntsc-film>
24000/1001
=back
=head2 Ratio
A ratio can be expressed as an expression, or in the form
I<numerator>:I<denominator>.
Note that a ratio with infinite (1/0) or negative value is
considered valid, so you should check on the returned value if you
want to exclude those values.
The undefined value can be expressed using the "0:0" string.
=head2 Color
It can be the name of a color as defined below (case insensitive match) or a
C<[0x|#]RRGGBB[AA]> sequence, possibly followed by @ and a string
representing the alpha component.
The alpha component may be a string composed by "0x" followed by an
hexadecimal number or a decimal number between 0.0 and 1.0, which
represents the opacity value (B<0x00> or B<0.0> means completely
transparent, B<0xff> or B<1.0> completely opaque). If the alpha
component is not specified then B<0xff> is assumed.
The string B<random> will result in a random color.
The following names of colors are recognized:
=over 4
=item B<AliceBlue>
0xF0F8FF
=item B<AntiqueWhite>
0xFAEBD7
=item B<Aqua>
0x00FFFF
=item B<Aquamarine>
0x7FFFD4
=item B<Azure>
0xF0FFFF
=item B<Beige>
0xF5F5DC
=item B<Bisque>
0xFFE4C4
=item B<Black>
0x000000
=item B<BlanchedAlmond>
0xFFEBCD
=item B<Blue>
0x0000FF
=item B<BlueViolet>
0x8A2BE2
=item B<Brown>
0xA52A2A
=item B<BurlyWood>
0xDEB887
=item B<CadetBlue>
0x5F9EA0
=item B<Chartreuse>
0x7FFF00
=item B<Chocolate>
0xD2691E
=item B<Coral>
0xFF7F50
=item B<CornflowerBlue>
0x6495ED
=item B<Cornsilk>
0xFFF8DC
=item B<Crimson>
0xDC143C
=item B<Cyan>
0x00FFFF
=item B<DarkBlue>
0x00008B
=item B<DarkCyan>
0x008B8B
=item B<DarkGoldenRod>
0xB8860B
=item B<DarkGray>
0xA9A9A9
=item B<DarkGreen>
0x006400
=item B<DarkKhaki>
0xBDB76B
=item B<DarkMagenta>
0x8B008B
=item B<DarkOliveGreen>
0x556B2F
=item B<Darkorange>
0xFF8C00
=item B<DarkOrchid>
0x9932CC
=item B<DarkRed>
0x8B0000
=item B<DarkSalmon>
0xE9967A
=item B<DarkSeaGreen>
0x8FBC8F
=item B<DarkSlateBlue>
0x483D8B
=item B<DarkSlateGray>
0x2F4F4F
=item B<DarkTurquoise>
0x00CED1
=item B<DarkViolet>
0x9400D3
=item B<DeepPink>
0xFF1493
=item B<DeepSkyBlue>
0x00BFFF
=item B<DimGray>
0x696969
=item B<DodgerBlue>
0x1E90FF
=item B<FireBrick>
0xB22222
=item B<FloralWhite>
0xFFFAF0
=item B<ForestGreen>
0x228B22
=item B<Fuchsia>
0xFF00FF
=item B<Gainsboro>
0xDCDCDC
=item B<GhostWhite>
0xF8F8FF
=item B<Gold>
0xFFD700
=item B<GoldenRod>
0xDAA520
=item B<Gray>
0x808080
=item B<Green>
0x008000
=item B<GreenYellow>
0xADFF2F
=item B<HoneyDew>
0xF0FFF0
=item B<HotPink>
0xFF69B4
=item B<IndianRed>
0xCD5C5C
=item B<Indigo>
0x4B0082
=item B<Ivory>
0xFFFFF0
=item B<Khaki>
0xF0E68C
=item B<Lavender>
0xE6E6FA
=item B<LavenderBlush>
0xFFF0F5
=item B<LawnGreen>
0x7CFC00
=item B<LemonChiffon>
0xFFFACD
=item B<LightBlue>
0xADD8E6
=item B<LightCoral>
0xF08080
=item B<LightCyan>
0xE0FFFF
=item B<LightGoldenRodYellow>
0xFAFAD2
=item B<LightGreen>
0x90EE90
=item B<LightGrey>
0xD3D3D3
=item B<LightPink>
0xFFB6C1
=item B<LightSalmon>
0xFFA07A
=item B<LightSeaGreen>
0x20B2AA
=item B<LightSkyBlue>
0x87CEFA
=item B<LightSlateGray>
0x778899
=item B<LightSteelBlue>
0xB0C4DE
=item B<LightYellow>
0xFFFFE0
=item B<Lime>
0x00FF00
=item B<LimeGreen>
0x32CD32
=item B<Linen>
0xFAF0E6
=item B<Magenta>
0xFF00FF
=item B<Maroon>
0x800000
=item B<MediumAquaMarine>
0x66CDAA
=item B<MediumBlue>
0x0000CD
=item B<MediumOrchid>
0xBA55D3
=item B<MediumPurple>
0x9370D8
=item B<MediumSeaGreen>
0x3CB371
=item B<MediumSlateBlue>
0x7B68EE
=item B<MediumSpringGreen>
0x00FA9A
=item B<MediumTurquoise>
0x48D1CC
=item B<MediumVioletRed>
0xC71585
=item B<MidnightBlue>
0x191970
=item B<MintCream>
0xF5FFFA
=item B<MistyRose>
0xFFE4E1
=item B<Moccasin>
0xFFE4B5
=item B<NavajoWhite>
0xFFDEAD
=item B<Navy>
0x000080
=item B<OldLace>
0xFDF5E6
=item B<Olive>
0x808000
=item B<OliveDrab>
0x6B8E23
=item B<Orange>
0xFFA500
=item B<OrangeRed>
0xFF4500
=item B<Orchid>
0xDA70D6
=item B<PaleGoldenRod>
0xEEE8AA
=item B<PaleGreen>
0x98FB98
=item B<PaleTurquoise>
0xAFEEEE
=item B<PaleVioletRed>
0xD87093
=item B<PapayaWhip>
0xFFEFD5
=item B<PeachPuff>
0xFFDAB9
=item B<Peru>
0xCD853F
=item B<Pink>
0xFFC0CB
=item B<Plum>
0xDDA0DD
=item B<PowderBlue>
0xB0E0E6
=item B<Purple>
0x800080
=item B<Red>
0xFF0000
=item B<RosyBrown>
0xBC8F8F
=item B<RoyalBlue>
0x4169E1
=item B<SaddleBrown>
0x8B4513
=item B<Salmon>
0xFA8072
=item B<SandyBrown>
0xF4A460
=item B<SeaGreen>
0x2E8B57
=item B<SeaShell>
0xFFF5EE
=item B<Sienna>
0xA0522D
=item B<Silver>
0xC0C0C0
=item B<SkyBlue>
0x87CEEB
=item B<SlateBlue>
0x6A5ACD
=item B<SlateGray>
0x708090
=item B<Snow>
0xFFFAFA
=item B<SpringGreen>
0x00FF7F
=item B<SteelBlue>
0x4682B4
=item B<Tan>
0xD2B48C
=item B<Teal>
0x008080
=item B<Thistle>
0xD8BFD8
=item B<Tomato>
0xFF6347
=item B<Turquoise>
0x40E0D0
=item B<Violet>
0xEE82EE
=item B<Wheat>
0xF5DEB3
=item B<White>
0xFFFFFF
=item B<WhiteSmoke>
0xF5F5F5
=item B<Yellow>
0xFFFF00
=item B<YellowGreen>
0x9ACD32
=back
=head2 Channel Layout
A channel layout specifies the spatial disposition of the channels in
a multi-channel audio stream. To specify a channel layout, FFmpeg
makes use of a special syntax.
Individual channels are identified by an id, as given by the table
below:
=over 4
=item B<FL>
front left
=item B<FR>
front right
=item B<FC>
front center
=item B<LFE>
low frequency
=item B<BL>
back left
=item B<BR>
back right
=item B<FLC>
front left-of-center
=item B<FRC>
front right-of-center
=item B<BC>
back center
=item B<SL>
side left
=item B<SR>
side right
=item B<TC>
top center
=item B<TFL>
top front left
=item B<TFC>
top front center
=item B<TFR>
top front right
=item B<TBL>
top back left
=item B<TBC>
top back center
=item B<TBR>
top back right
=item B<DL>
downmix left
=item B<DR>
downmix right
=item B<WL>
wide left
=item B<WR>
wide right
=item B<SDL>
surround direct left
=item B<SDR>
surround direct right
=item B<LFE2>
low frequency 2
=back
Standard channel layout compositions can be specified by using the
following identifiers:
=over 4
=item B<mono>
FC
=item B<stereo>
FL+FR
=item B<2.1>
FL+FR+LFE
=item B<3.0>
FL+FR+FC
=item B<3.0(back)>
FL+FR+BC
=item B<4.0>
FL+FR+FC+BC
=item B<quad>
FL+FR+BL+BR
=item B<quad(side)>
FL+FR+SL+SR
=item B<3.1>
FL+FR+FC+LFE
=item B<5.0>
FL+FR+FC+BL+BR
=item B<5.0(side)>
FL+FR+FC+SL+SR
=item B<4.1>
FL+FR+FC+LFE+BC
=item B<5.1>
FL+FR+FC+LFE+BL+BR
=item B<5.1(side)>
FL+FR+FC+LFE+SL+SR
=item B<6.0>
FL+FR+FC+BC+SL+SR
=item B<6.0(front)>
FL+FR+FLC+FRC+SL+SR
=item B<hexagonal>
FL+FR+FC+BL+BR+BC
=item B<6.1>
FL+FR+FC+LFE+BC+SL+SR
=item B<6.1>
FL+FR+FC+LFE+BL+BR+BC
=item B<6.1(front)>
FL+FR+LFE+FLC+FRC+SL+SR
=item B<7.0>
FL+FR+FC+BL+BR+SL+SR
=item B<7.0(front)>
FL+FR+FC+FLC+FRC+SL+SR
=item B<7.1>
FL+FR+FC+LFE+BL+BR+SL+SR
=item B<7.1(wide)>
FL+FR+FC+LFE+BL+BR+FLC+FRC
=item B<7.1(wide-side)>
FL+FR+FC+LFE+FLC+FRC+SL+SR
=item B<octagonal>
FL+FR+FC+BL+BR+BC+SL+SR
=item B<downmix>
DL+DR
=back
A custom channel layout can be specified as a sequence of terms, separated by
'+' or '|'. Each term can be:
=over 4
=item *
the name of a standard channel layout (e.g. B<mono>,
B<stereo>, B<4.0>, B<quad>, B<5.0>, etc.)
=item *
the name of a single channel (e.g. B<FL>, B<FR>, B<FC>, B<LFE>, etc.)
=item *
a number of channels, in decimal, optionally followed by 'c', yielding
the default channel layout for that number of channels (see the
function C<av_get_default_channel_layout>)
=item *
a channel layout mask, in hexadecimal starting with "0x" (see the
C<AV_CH_*> macros in F<libavutil/channel_layout.h>.
=back
Starting from libavutil version 53 the trailing character "c" to
specify a number of channels will be required, while a channel layout
mask could also be specified as a decimal number (if and only if not
followed by "c").
See also the function C<av_get_channel_layout> defined in
F<libavutil/channel_layout.h>.
=head1 EXPRESSION EVALUATION
When evaluating an arithmetic expression, FFmpeg uses an internal
formula evaluator, implemented through the F<libavutil/eval.h>
interface.
An expression may contain unary, binary operators, constants, and
functions.
Two expressions I<expr1> and I<expr2> can be combined to form
another expression "I<expr1>;I<expr2>".
I<expr1> and I<expr2> are evaluated in turn, and the new
expression evaluates to the value of I<expr2>.
The following binary operators are available: C<+>, C<->,
C<*>, C</>, C<^>.
The following unary operators are available: C<+>, C<->.
The following functions are available:
=over 4
=item B<abs(x)>
Compute absolute value of I<x>.
=item B<acos(x)>
Compute arccosine of I<x>.
=item B<asin(x)>
Compute arcsine of I<x>.
=item B<atan(x)>
Compute arctangent of I<x>.
=item B<between(x, min, max)>
Return 1 if I<x> is greater than or equal to I<min> and lesser than or
equal to I<max>, 0 otherwise.
=item B<bitand(x, y)>
=item B<bitor(x, y)>
Compute bitwise and/or operation on I<x> and I<y>.
The results of the evaluation of I<x> and I<y> are converted to
integers before executing the bitwise operation.
Note that both the conversion to integer and the conversion back to
floating point can lose precision. Beware of unexpected results for
large numbers (usually 2^53 and larger).
=item B<ceil(expr)>
Round the value of expression I<expr> upwards to the nearest
integer. For example, "ceil(1.5)" is "2.0".
=item B<cos(x)>
Compute cosine of I<x>.
=item B<cosh(x)>
Compute hyperbolic cosine of I<x>.
=item B<eq(x, y)>
Return 1 if I<x> and I<y> are equivalent, 0 otherwise.
=item B<exp(x)>
Compute exponential of I<x> (with base C<e>, the Euler's number).
=item B<floor(expr)>
Round the value of expression I<expr> downwards to the nearest
integer. For example, "floor(-1.5)" is "-2.0".
=item B<gauss(x)>
Compute Gauss function of I<x>, corresponding to
C<exp(-x*x/2) / sqrt(2*PI)>.
=item B<gcd(x, y)>
Return the greatest common divisor of I<x> and I<y>. If both I<x> and
I<y> are 0 or either or both are less than zero then behavior is undefined.
=item B<gt(x, y)>
Return 1 if I<x> is greater than I<y>, 0 otherwise.
=item B<gte(x, y)>
Return 1 if I<x> is greater than or equal to I<y>, 0 otherwise.
=item B<hypot(x, y)>
This function is similar to the C function with the same name; it returns
"sqrt(I<x>*I<x> + I<y>*I<y>)", the length of the hypotenuse of a
right triangle with sides of length I<x> and I<y>, or the distance of the
point (I<x>, I<y>) from the origin.
=item B<if(x, y)>
Evaluate I<x>, and if the result is non-zero return the result of
the evaluation of I<y>, return 0 otherwise.
=item B<if(x, y, z)>
Evaluate I<x>, and if the result is non-zero return the evaluation
result of I<y>, otherwise the evaluation result of I<z>.
=item B<ifnot(x, y)>
Evaluate I<x>, and if the result is zero return the result of the
evaluation of I<y>, return 0 otherwise.
=item B<ifnot(x, y, z)>
Evaluate I<x>, and if the result is zero return the evaluation
result of I<y>, otherwise the evaluation result of I<z>.
=item B<isinf(x)>
Return 1.0 if I<x> is +/-INFINITY, 0.0 otherwise.
=item B<isnan(x)>
Return 1.0 if I<x> is NAN, 0.0 otherwise.
=item B<ld(var)>
Allow to load the value of the internal variable with number
I<var>, which was previously stored with st(I<var>, I<expr>).
The function returns the loaded value.
=item B<log(x)>
Compute natural logarithm of I<x>.
=item B<lt(x, y)>
Return 1 if I<x> is lesser than I<y>, 0 otherwise.
=item B<lte(x, y)>
Return 1 if I<x> is lesser than or equal to I<y>, 0 otherwise.
=item B<max(x, y)>
Return the maximum between I<x> and I<y>.
=item B<min(x, y)>
Return the maximum between I<x> and I<y>.
=item B<mod(x, y)>
Compute the remainder of division of I<x> by I<y>.
=item B<not(expr)>
Return 1.0 if I<expr> is zero, 0.0 otherwise.
=item B<pow(x, y)>
Compute the power of I<x> elevated I<y>, it is equivalent to
"(I<x>)^(I<y>)".
=item B<print(t)>
=item B<print(t, l)>
Print the value of expression I<t> with loglevel I<l>. If
I<l> is not specified then a default log level is used.
Returns the value of the expression printed.
Prints t with loglevel l
=item B<random(x)>
Return a pseudo random value between 0.0 and 1.0. I<x> is the index of the
internal variable which will be used to save the seed/state.
=item B<root(expr, max)>
Find an input value for which the function represented by I<expr>
with argument I<ld(0)> is 0 in the interval 0..I<max>.
The expression in I<expr> must denote a continuous function or the
result is undefined.
I<ld(0)> is used to represent the function input value, which means
that the given expression will be evaluated multiple times with
various input values that the expression can access through
C<ld(0)>. When the expression evaluates to 0 then the
corresponding input value will be returned.
=item B<sin(x)>
Compute sine of I<x>.
=item B<sinh(x)>
Compute hyperbolic sine of I<x>.
=item B<sqrt(expr)>
Compute the square root of I<expr>. This is equivalent to
"(I<expr>)^.5".
=item B<squish(x)>
Compute expression C<1/(1 + exp(4*x))>.
=item B<st(var, expr)>
Allow to store the value of the expression I<expr> in an internal
variable. I<var> specifies the number of the variable where to
store the value, and it is a value ranging from 0 to 9. The function
returns the value stored in the internal variable.
Note, Variables are currently not shared between expressions.
=item B<tan(x)>
Compute tangent of I<x>.
=item B<tanh(x)>
Compute hyperbolic tangent of I<x>.
=item B<taylor(expr, x)>
=item B<taylor(expr, x, id)>
Evaluate a Taylor series at I<x>, given an expression representing
the C<ld(id)>-th derivative of a function at 0.
When the series does not converge the result is undefined.
I<ld(id)> is used to represent the derivative order in I<expr>,
which means that the given expression will be evaluated multiple times
with various input values that the expression can access through
C<ld(id)>. If I<id> is not specified then 0 is assumed.
Note, when you have the derivatives at y instead of 0,
C<taylor(expr, x-y)> can be used.
=item B<time(0)>
Return the current (wallclock) time in seconds.
=item B<trunc(expr)>
Round the value of expression I<expr> towards zero to the nearest
integer. For example, "trunc(-1.5)" is "-1.0".
=item B<while(cond, expr)>
Evaluate expression I<expr> while the expression I<cond> is
non-zero, and returns the value of the last I<expr> evaluation, or
NAN if I<cond> was always false.
=back
The following constants are available:
=over 4
=item B<PI>
area of the unit disc, approximately 3.14
=item B<E>
exp(1) (Euler's number), approximately 2.718
=item B<PHI>
golden ratio (1+sqrt(5))/2, approximately 1.618
=back
Assuming that an expression is considered "true" if it has a non-zero
value, note that:
C<*> works like AND
C<+> works like OR
For example the construct:
if (A AND B) then C
is equivalent to:
if(A*B, C)
In your C code, you can extend the list of unary and binary functions,
and define recognized constants, so that they are available for your
expressions.
The evaluator also recognizes the International System unit prefixes.
If 'i' is appended after the prefix, binary prefixes are used, which
are based on powers of 1024 instead of powers of 1000.
The 'B' postfix multiplies the value by 8, and can be appended after a
unit prefix or used alone. This allows using for example 'KB', 'MiB',
'G' and 'B' as number postfix.
The list of available International System prefixes follows, with
indication of the corresponding powers of 10 and of 2.
=over 4
=item B<y>
10^-24 / 2^-80
=item B<z>
10^-21 / 2^-70
=item B<a>
10^-18 / 2^-60
=item B<f>
10^-15 / 2^-50
=item B<p>
10^-12 / 2^-40
=item B<n>
10^-9 / 2^-30
=item B<u>
10^-6 / 2^-20
=item B<m>
10^-3 / 2^-10
=item B<c>
10^-2
=item B<d>
10^-1
=item B<h>
10^2
=item B<k>
10^3 / 2^10
=item B<K>
10^3 / 2^10
=item B<M>
10^6 / 2^20
=item B<G>
10^9 / 2^30
=item B<T>
10^12 / 2^40
=item B<P>
10^15 / 2^40
=item B<E>
10^18 / 2^50
=item B<Z>
10^21 / 2^60
=item B<Y>
10^24 / 2^70
=back
=head1 OPENCL OPTIONS
When FFmpeg is configured with C<--enable-opencl>, it is possible
to set the options for the global OpenCL context.
The list of supported options follows:
=over 4
=item B<build_options>
Set build options used to compile the registered kernels.
See reference "OpenCL Specification Version: 1.2 chapter 5.6.4".
=item B<platform_idx>
Select the index of the platform to run OpenCL code.
The specified index must be one of the indexes in the device list
which can be obtained with C<av_opencl_get_device_list()>.
=item B<device_idx>
Select the index of the device used to run OpenCL code.
The specifed index must be one of the indexes in the device list which
can be obtained with C<av_opencl_get_device_list()>.
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/ffmpeg-utils.texi
0,0 → 1,42
\input texinfo @c -*- texinfo -*-
@settitle FFmpeg Utilities Documentation
@titlepage
@center @titlefont{FFmpeg Utilities Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
This document describes some generic features and utilities provided
by the libavutil library.
@c man end DESCRIPTION
@include utils.texi
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{libavutil.html,libavutil}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1), libavutil(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg-utils
@settitle FFmpeg utilities
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg.texi
0,0 → 1,1454
\input texinfo @c -*- texinfo -*-
@settitle ffmpeg Documentation
@titlepage
@center @titlefont{ffmpeg Documentation}
@end titlepage
@top
@contents
@chapter Synopsis
ffmpeg [@var{global_options}] @{[@var{input_file_options}] -i @file{input_file}@} ... @{[@var{output_file_options}] @file{output_file}@} ...
@chapter Description
@c man begin DESCRIPTION
@command{ffmpeg} is a very fast video and audio converter that can also grab from
a live audio/video source. It can also convert between arbitrary sample
rates and resize video on the fly with a high quality polyphase filter.
@command{ffmpeg} reads from an arbitrary number of input "files" (which can be regular
files, pipes, network streams, grabbing devices, etc.), specified by the
@code{-i} option, and writes to an arbitrary number of output "files", which are
specified by a plain output filename. Anything found on the command line which
cannot be interpreted as an option is considered to be an output filename.
Each input or output file can, in principle, contain any number of streams of
different types (video/audio/subtitle/attachment/data). The allowed number and/or
types of streams may be limited by the container format. Selecting which
streams from which inputs will go into which output is either done automatically
or with the @code{-map} option (see the Stream selection chapter).
To refer to input files in options, you must use their indices (0-based). E.g.
the first input file is @code{0}, the second is @code{1}, etc. Similarly, streams
within a file are referred to by their indices. E.g. @code{2:3} refers to the
fourth stream in the third input file. Also see the Stream specifiers chapter.
As a general rule, options are applied to the next specified
file. Therefore, order is important, and you can have the same
option on the command line multiple times. Each occurrence is
then applied to the next input or output file.
Exceptions from this rule are the global options (e.g. verbosity level),
which should be specified first.
Do not mix input and output files -- first specify all input files, then all
output files. Also do not mix options which belong to different files. All
options apply ONLY to the next input or output file and are reset between files.
@itemize
@item
To set the video bitrate of the output file to 64 kbit/s:
@example
ffmpeg -i input.avi -b:v 64k -bufsize 64k output.avi
@end example
@item
To force the frame rate of the output file to 24 fps:
@example
ffmpeg -i input.avi -r 24 output.avi
@end example
@item
To force the frame rate of the input file (valid for raw formats only)
to 1 fps and the frame rate of the output file to 24 fps:
@example
ffmpeg -r 1 -i input.m2v -r 24 output.avi
@end example
@end itemize
The format option may be needed for raw input files.
@c man end DESCRIPTION
@chapter Detailed description
@c man begin DETAILED DESCRIPTION
The transcoding process in @command{ffmpeg} for each output can be described by
the following diagram:
@example
_______ ______________ _________ ______________ ________
| | | | | | | | | |
| input | demuxer | encoded data | decoder | decoded | encoder | encoded data | muxer | output |
| file | ---------> | packets | ---------> | frames | ---------> | packets | -------> | file |
|_______| |______________| |_________| |______________| |________|
@end example
@command{ffmpeg} calls the libavformat library (containing demuxers) to read
input files and get packets containing encoded data from them. When there are
multiple input files, @command{ffmpeg} tries to keep them synchronized by
tracking lowest timestamp on any active input stream.
Encoded packets are then passed to the decoder (unless streamcopy is selected
for the stream, see further for a description). The decoder produces
uncompressed frames (raw video/PCM audio/...) which can be processed further by
filtering (see next section). After filtering, the frames are passed to the
encoder, which encodes them and outputs encoded packets. Finally those are
passed to the muxer, which writes the encoded packets to the output file.
@section Filtering
Before encoding, @command{ffmpeg} can process raw audio and video frames using
filters from the libavfilter library. Several chained filters form a filter
graph. @command{ffmpeg} distinguishes between two types of filtergraphs:
simple and complex.
@subsection Simple filtergraphs
Simple filtergraphs are those that have exactly one input and output, both of
the same type. In the above diagram they can be represented by simply inserting
an additional step between decoding and encoding:
@example
_________ __________ ______________
| | | | | |
| decoded | simple filtergraph | filtered | encoder | encoded data |
| frames | -------------------> | frames | ---------> | packets |
|_________| |__________| |______________|
@end example
Simple filtergraphs are configured with the per-stream @option{-filter} option
(with @option{-vf} and @option{-af} aliases for video and audio respectively).
A simple filtergraph for video can look for example like this:
@example
_______ _____________ _______ _____ ________
| | | | | | | | | |
| input | ---> | deinterlace | ---> | scale | ---> | fps | ---> | output |
|_______| |_____________| |_______| |_____| |________|
@end example
Note that some filters change frame properties but not frame contents. E.g. the
@code{fps} filter in the example above changes number of frames, but does not
touch the frame contents. Another example is the @code{setpts} filter, which
only sets timestamps and otherwise passes the frames unchanged.
@subsection Complex filtergraphs
Complex filtergraphs are those which cannot be described as simply a linear
processing chain applied to one stream. This is the case, for example, when the graph has
more than one input and/or output, or when output stream type is different from
input. They can be represented with the following diagram:
@example
_________
| |
| input 0 |\ __________
|_________| \ | |
\ _________ /| output 0 |
\ | | / |__________|
_________ \| complex | /
| | | |/
| input 1 |---->| filter |\
|_________| | | \ __________
/| graph | \ | |
/ | | \| output 1 |
_________ / |_________| |__________|
| | /
| input 2 |/
|_________|
@end example
Complex filtergraphs are configured with the @option{-filter_complex} option.
Note that this option is global, since a complex filtergraph, by its nature,
cannot be unambiguously associated with a single stream or file.
The @option{-lavfi} option is equivalent to @option{-filter_complex}.
A trivial example of a complex filtergraph is the @code{overlay} filter, which
has two video inputs and one video output, containing one video overlaid on top
of the other. Its audio counterpart is the @code{amix} filter.
@section Stream copy
Stream copy is a mode selected by supplying the @code{copy} parameter to the
@option{-codec} option. It makes @command{ffmpeg} omit the decoding and encoding
step for the specified stream, so it does only demuxing and muxing. It is useful
for changing the container format or modifying container-level metadata. The
diagram above will, in this case, simplify to this:
@example
_______ ______________ ________
| | | | | |
| input | demuxer | encoded data | muxer | output |
| file | ---------> | packets | -------> | file |
|_______| |______________| |________|
@end example
Since there is no decoding or encoding, it is very fast and there is no quality
loss. However, it might not work in some cases because of many factors. Applying
filters is obviously also impossible, since filters work on uncompressed data.
@c man end DETAILED DESCRIPTION
@chapter Stream selection
@c man begin STREAM SELECTION
By default, @command{ffmpeg} includes only one stream of each type (video, audio, subtitle)
present in the input files and adds them to each output file. It picks the
"best" of each based upon the following criteria: for video, it is the stream
with the highest resolution, for audio, it is the stream with the most channels, for
subtitles, it is the first subtitle stream. In the case where several streams of
the same type rate equally, the stream with the lowest index is chosen.
You can disable some of those defaults by using the @code{-vn/-an/-sn} options. For
full manual control, use the @code{-map} option, which disables the defaults just
described.
@c man end STREAM SELECTION
@chapter Options
@c man begin OPTIONS
@include fftools-common-opts.texi
@section Main options
@table @option
@item -f @var{fmt} (@emph{input/output})
Force input or output file format. The format is normally auto detected for input
files and guessed from the file extension for output files, so this option is not
needed in most cases.
@item -i @var{filename} (@emph{input})
input file name
@item -y (@emph{global})
Overwrite output files without asking.
@item -n (@emph{global})
Do not overwrite output files, and exit immediately if a specified
output file already exists.
@item -c[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
@itemx -codec[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
Select an encoder (when used before an output file) or a decoder (when used
before an input file) for one or more streams. @var{codec} is the name of a
decoder/encoder or a special value @code{copy} (output only) to indicate that
the stream is not to be re-encoded.
For example
@example
ffmpeg -i INPUT -map 0 -c:v libx264 -c:a copy OUTPUT
@end example
encodes all video streams with libx264 and copies all audio streams.
For each stream, the last matching @code{c} option is applied, so
@example
ffmpeg -i INPUT -map 0 -c copy -c:v:1 libx264 -c:a:137 libvorbis OUTPUT
@end example
will copy all the streams except the second video, which will be encoded with
libx264, and the 138th audio, which will be encoded with libvorbis.
@item -t @var{duration} (@emph{output})
Stop writing the output after its duration reaches @var{duration}.
@var{duration} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-to and -t are mutually exclusive and -t has priority.
@item -to @var{position} (@emph{output})
Stop writing the output at @var{position}.
@var{position} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-to and -t are mutually exclusive and -t has priority.
@item -fs @var{limit_size} (@emph{output})
Set the file size limit, expressed in bytes.
@item -ss @var{position} (@emph{input/output})
When used as an input option (before @code{-i}), seeks in this input file to
@var{position}. Note the in most formats it is not possible to seek exactly, so
@command{ffmpeg} will seek to the closest seek point before @var{position}.
When transcoding and @option{-accurate_seek} is enabled (the default), this
extra segment between the seek point and @var{position} will be decoded and
discarded. When doing stream copy or when @option{-noaccurate_seek} is used, it
will be preserved.
When used as an output option (before an output filename), decodes but discards
input until the timestamps reach @var{position}.
@var{position} may be either in seconds or in @code{hh:mm:ss[.xxx]} form.
@item -itsoffset @var{offset} (@emph{input})
Set the input time offset in seconds.
@code{[-]hh:mm:ss[.xxx]} syntax is also supported.
The offset is added to the timestamps of the input files.
Specifying a positive offset means that the corresponding
streams are delayed by @var{offset} seconds.
@item -timestamp @var{time} (@emph{output})
Set the recording timestamp in the container.
The syntax for @var{time} is:
@example
now|([(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH:MM:SS[.m...])|(HHMMSS[.m...]))[Z|z])
@end example
If the value is "now" it takes the current time.
Time is local time unless 'Z' or 'z' is appended, in which case it is
interpreted as UTC.
If the year-month-day part is not specified it takes the current
year-month-day.
@item -metadata[:metadata_specifier] @var{key}=@var{value} (@emph{output,per-metadata})
Set a metadata key/value pair.
An optional @var{metadata_specifier} may be given to set metadata
on streams or chapters. See @code{-map_metadata} documentation for
details.
This option overrides metadata set with @code{-map_metadata}. It is
also possible to delete metadata by using an empty value.
For example, for setting the title in the output file:
@example
ffmpeg -i in.avi -metadata title="my title" out.flv
@end example
To set the language of the first audio stream:
@example
ffmpeg -i INPUT -metadata:s:a:1 language=eng OUTPUT
@end example
@item -target @var{type} (@emph{output})
Specify target file type (@code{vcd}, @code{svcd}, @code{dvd}, @code{dv},
@code{dv50}). @var{type} may be prefixed with @code{pal-}, @code{ntsc-} or
@code{film-} to use the corresponding standard. All the format options
(bitrate, codecs, buffer sizes) are then set automatically. You can just type:
@example
ffmpeg -i myfile.avi -target vcd /tmp/vcd.mpg
@end example
Nevertheless you can specify additional options as long as you know
they do not conflict with the standard, as in:
@example
ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
@end example
@item -dframes @var{number} (@emph{output})
Set the number of data frames to record. This is an alias for @code{-frames:d}.
@item -frames[:@var{stream_specifier}] @var{framecount} (@emph{output,per-stream})
Stop writing to the stream after @var{framecount} frames.
@item -q[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
@itemx -qscale[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
Use fixed quality scale (VBR). The meaning of @var{q} is
codec-dependent.
@anchor{filter_option}
@item -filter[:@var{stream_specifier}] @var{filtergraph} (@emph{output,per-stream})
Create the filtergraph specified by @var{filtergraph} and use it to
filter the stream.
@var{filtergraph} is a description of the filtergraph to apply to
the stream, and must have a single input and a single output of the
same type of the stream. In the filtergraph, the input is associated
to the label @code{in}, and the output to the label @code{out}. See
the ffmpeg-filters manual for more information about the filtergraph
syntax.
See the @ref{filter_complex_option,,-filter_complex option} if you
want to create filtergraphs with multiple inputs and/or outputs.
@item -filter_script[:@var{stream_specifier}] @var{filename} (@emph{output,per-stream})
This option is similar to @option{-filter}, the only difference is that its
argument is the name of the file from which a filtergraph description is to be
read.
@item -pre[:@var{stream_specifier}] @var{preset_name} (@emph{output,per-stream})
Specify the preset for matching stream(s).
@item -stats (@emph{global})
Print encoding progress/statistics. It is on by default, to explicitly
disable it you need to specify @code{-nostats}.
@item -progress @var{url} (@emph{global})
Send program-friendly progress information to @var{url}.
Progress information is written approximately every second and at the end of
the encoding process. It is made of "@var{key}=@var{value}" lines. @var{key}
consists of only alphanumeric characters. The last key of a sequence of
progress information is always "progress".
@item -stdin
Enable interaction on standard input. On by default unless standard input is
used as an input. To explicitly disable interaction you need to specify
@code{-nostdin}.
Disabling interaction on standard input is useful, for example, if
ffmpeg is in the background process group. Roughly the same result can
be achieved with @code{ffmpeg ... < /dev/null} but it requires a
shell.
@item -debug_ts (@emph{global})
Print timestamp information. It is off by default. This option is
mostly useful for testing and debugging purposes, and the output
format may change from one version to another, so it should not be
employed by portable scripts.
See also the option @code{-fdebug ts}.
@item -attach @var{filename} (@emph{output})
Add an attachment to the output file. This is supported by a few formats
like Matroska for e.g. fonts used in rendering subtitles. Attachments
are implemented as a specific type of stream, so this option will add
a new stream to the file. It is then possible to use per-stream options
on this stream in the usual way. Attachment streams created with this
option will be created after all the other streams (i.e. those created
with @code{-map} or automatic mappings).
Note that for Matroska you also have to set the mimetype metadata tag:
@example
ffmpeg -i INPUT -attach DejaVuSans.ttf -metadata:s:2 mimetype=application/x-truetype-font out.mkv
@end example
(assuming that the attachment stream will be third in the output file).
@item -dump_attachment[:@var{stream_specifier}] @var{filename} (@emph{input,per-stream})
Extract the matching attachment stream into a file named @var{filename}. If
@var{filename} is empty, then the value of the @code{filename} metadata tag
will be used.
E.g. to extract the first attachment to a file named 'out.ttf':
@example
ffmpeg -dump_attachment:t:0 out.ttf -i INPUT
@end example
To extract all attachments to files determined by the @code{filename} tag:
@example
ffmpeg -dump_attachment:t "" -i INPUT
@end example
Technical note -- attachments are implemented as codec extradata, so this
option can actually be used to extract extradata from any stream, not just
attachments.
@end table
@section Video Options
@table @option
@item -vframes @var{number} (@emph{output})
Set the number of video frames to record. This is an alias for @code{-frames:v}.
@item -r[:@var{stream_specifier}] @var{fps} (@emph{input/output,per-stream})
Set frame rate (Hz value, fraction or abbreviation).
As an input option, ignore any timestamps stored in the file and instead
generate timestamps assuming constant frame rate @var{fps}.
As an output option, duplicate or drop input frames to achieve constant output
frame rate @var{fps}.
@item -s[:@var{stream_specifier}] @var{size} (@emph{input/output,per-stream})
Set frame size.
As an input option, this is a shortcut for the @option{video_size} private
option, recognized by some demuxers for which the frame size is either not
stored in the file or is configurable -- e.g. raw video or video grabbers.
As an output option, this inserts the @code{scale} video filter to the
@emph{end} of the corresponding filtergraph. Please use the @code{scale} filter
directly to insert it at the beginning or some other place.
The format is @samp{wxh} (default - same as source).
@item -aspect[:@var{stream_specifier}] @var{aspect} (@emph{output,per-stream})
Set the video display aspect ratio specified by @var{aspect}.
@var{aspect} can be a floating point number string, or a string of the
form @var{num}:@var{den}, where @var{num} and @var{den} are the
numerator and denominator of the aspect ratio. For example "4:3",
"16:9", "1.3333", and "1.7777" are valid argument values.
If used together with @option{-vcodec copy}, it will affect the aspect ratio
stored at container level, but not the aspect ratio stored in encoded
frames, if it exists.
@item -vn (@emph{output})
Disable video recording.
@item -vcodec @var{codec} (@emph{output})
Set the video codec. This is an alias for @code{-codec:v}.
@item -pass[:@var{stream_specifier}] @var{n} (@emph{output,per-stream})
Select the pass number (1 or 2). It is used to do two-pass
video encoding. The statistics of the video are recorded in the first
pass into a log file (see also the option -passlogfile),
and in the second pass that log file is used to generate the video
at the exact requested bitrate.
On pass 1, you may just deactivate audio and set output to null,
examples for Windows and Unix:
@example
ffmpeg -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y NUL
ffmpeg -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y /dev/null
@end example
@item -passlogfile[:@var{stream_specifier}] @var{prefix} (@emph{output,per-stream})
Set two-pass log file name prefix to @var{prefix}, the default file name
prefix is ``ffmpeg2pass''. The complete file name will be
@file{PREFIX-N.log}, where N is a number specific to the output
stream
@item -vlang @var{code}
Set the ISO 639 language code (3 letters) of the current video stream.
@item -vf @var{filtergraph} (@emph{output})
Create the filtergraph specified by @var{filtergraph} and use it to
filter the stream.
This is an alias for @code{-filter:v}, see the @ref{filter_option,,-filter option}.
@end table
@section Advanced Video Options
@table @option
@item -pix_fmt[:@var{stream_specifier}] @var{format} (@emph{input/output,per-stream})
Set pixel format. Use @code{-pix_fmts} to show all the supported
pixel formats.
If the selected pixel format can not be selected, ffmpeg will print a
warning and select the best pixel format supported by the encoder.
If @var{pix_fmt} is prefixed by a @code{+}, ffmpeg will exit with an error
if the requested pixel format can not be selected, and automatic conversions
inside filtergraphs are disabled.
If @var{pix_fmt} is a single @code{+}, ffmpeg selects the same pixel format
as the input (or graph output) and automatic conversions are disabled.
@item -sws_flags @var{flags} (@emph{input/output})
Set SwScaler flags.
@item -vdt @var{n}
Discard threshold.
@item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream})
Rate control override for specific intervals, formatted as "int,int,int"
list separated with slashes. Two first values are the beginning and
end frame numbers, last one is quantizer to use if positive, or quality
factor if negative.
@item -ilme
Force interlacing support in encoder (MPEG-2 and MPEG-4 only).
Use this option if your input file is interlaced and you want
to keep the interlaced format for minimum losses.
The alternative is to deinterlace the input stream with
@option{-deinterlace}, but deinterlacing introduces losses.
@item -psnr
Calculate PSNR of compressed frames.
@item -vstats
Dump video coding statistics to @file{vstats_HHMMSS.log}.
@item -vstats_file @var{file}
Dump video coding statistics to @var{file}.
@item -top[:@var{stream_specifier}] @var{n} (@emph{output,per-stream})
top=1/bottom=0/auto=-1 field first
@item -dc @var{precision}
Intra_dc_precision.
@item -vtag @var{fourcc/tag} (@emph{output})
Force video tag/fourcc. This is an alias for @code{-tag:v}.
@item -qphist (@emph{global})
Show QP histogram
@item -vbsf @var{bitstream_filter}
Deprecated see -bsf
@item -force_key_frames[:@var{stream_specifier}] @var{time}[,@var{time}...] (@emph{output,per-stream})
@item -force_key_frames[:@var{stream_specifier}] expr:@var{expr} (@emph{output,per-stream})
Force key frames at the specified timestamps, more precisely at the first
frames after each specified time.
If the argument is prefixed with @code{expr:}, the string @var{expr}
is interpreted like an expression and is evaluated for each frame. A
key frame is forced in case the evaluation is non-zero.
If one of the times is "@code{chapters}[@var{delta}]", it is expanded into
the time of the beginning of all chapters in the file, shifted by
@var{delta}, expressed as a time in seconds.
This option can be useful to ensure that a seek point is present at a
chapter mark or any other designated place in the output file.
For example, to insert a key frame at 5 minutes, plus key frames 0.1 second
before the beginning of every chapter:
@example
-force_key_frames 0:05:00,chapters-0.1
@end example
The expression in @var{expr} can contain the following constants:
@table @option
@item n
the number of current processed frame, starting from 0
@item n_forced
the number of forced frames
@item prev_forced_n
the number of the previous forced frame, it is @code{NAN} when no
keyframe was forced yet
@item prev_forced_t
the time of the previous forced frame, it is @code{NAN} when no
keyframe was forced yet
@item t
the time of the current processed frame
@end table
For example to force a key frame every 5 seconds, you can specify:
@example
-force_key_frames expr:gte(t,n_forced*5)
@end example
To force a key frame 5 seconds after the time of the last forced one,
starting from second 13:
@example
-force_key_frames expr:if(isnan(prev_forced_t),gte(t,13),gte(t,prev_forced_t+5))
@end example
Note that forcing too many keyframes is very harmful for the lookahead
algorithms of certain encoders: using fixed-GOP options or similar
would be more efficient.
@item -copyinkf[:@var{stream_specifier}] (@emph{output,per-stream})
When doing stream copy, copy also non-key frames found at the
beginning.
@end table
@section Audio Options
@table @option
@item -aframes @var{number} (@emph{output})
Set the number of audio frames to record. This is an alias for @code{-frames:a}.
@item -ar[:@var{stream_specifier}] @var{freq} (@emph{input/output,per-stream})
Set the audio sampling frequency. For output streams it is set by
default to the frequency of the corresponding input stream. For input
streams this option only makes sense for audio grabbing devices and raw
demuxers and is mapped to the corresponding demuxer options.
@item -aq @var{q} (@emph{output})
Set the audio quality (codec-specific, VBR). This is an alias for -q:a.
@item -ac[:@var{stream_specifier}] @var{channels} (@emph{input/output,per-stream})
Set the number of audio channels. For output streams it is set by
default to the number of input audio channels. For input streams
this option only makes sense for audio grabbing devices and raw demuxers
and is mapped to the corresponding demuxer options.
@item -an (@emph{output})
Disable audio recording.
@item -acodec @var{codec} (@emph{input/output})
Set the audio codec. This is an alias for @code{-codec:a}.
@item -sample_fmt[:@var{stream_specifier}] @var{sample_fmt} (@emph{output,per-stream})
Set the audio sample format. Use @code{-sample_fmts} to get a list
of supported sample formats.
@item -af @var{filtergraph} (@emph{output})
Create the filtergraph specified by @var{filtergraph} and use it to
filter the stream.
This is an alias for @code{-filter:a}, see the @ref{filter_option,,-filter option}.
@end table
@section Advanced Audio options:
@table @option
@item -atag @var{fourcc/tag} (@emph{output})
Force audio tag/fourcc. This is an alias for @code{-tag:a}.
@item -absf @var{bitstream_filter}
Deprecated, see -bsf
@item -guess_layout_max @var{channels} (@emph{input,per-stream})
If some input channel layout is not known, try to guess only if it
corresponds to at most the specified number of channels. For example, 2
tells to @command{ffmpeg} to recognize 1 channel as mono and 2 channels as
stereo but not 6 channels as 5.1. The default is to always try to guess. Use
0 to disable all guessing.
@end table
@section Subtitle options:
@table @option
@item -slang @var{code}
Set the ISO 639 language code (3 letters) of the current subtitle stream.
@item -scodec @var{codec} (@emph{input/output})
Set the subtitle codec. This is an alias for @code{-codec:s}.
@item -sn (@emph{output})
Disable subtitle recording.
@item -sbsf @var{bitstream_filter}
Deprecated, see -bsf
@end table
@section Advanced Subtitle options:
@table @option
@item -fix_sub_duration
Fix subtitles durations. For each subtitle, wait for the next packet in the
same stream and adjust the duration of the first to avoid overlap. This is
necessary with some subtitles codecs, especially DVB subtitles, because the
duration in the original packet is only a rough estimate and the end is
actually marked by an empty subtitle frame. Failing to use this option when
necessary can result in exaggerated durations or muxing failures due to
non-monotonic timestamps.
Note that this option will delay the output of all data until the next
subtitle packet is decoded: it may increase memory consumption and latency a
lot.
@item -canvas_size @var{size}
Set the size of the canvas used to render subtitles.
@end table
@section Advanced options
@table @option
@item -map [-]@var{input_file_id}[:@var{stream_specifier}][,@var{sync_file_id}[:@var{stream_specifier}]] | @var{[linklabel]} (@emph{output})
Designate one or more input streams as a source for the output file. Each input
stream is identified by the input file index @var{input_file_id} and
the input stream index @var{input_stream_id} within the input
file. Both indices start at 0. If specified,
@var{sync_file_id}:@var{stream_specifier} sets which input stream
is used as a presentation sync reference.
The first @code{-map} option on the command line specifies the
source for output stream 0, the second @code{-map} option specifies
the source for output stream 1, etc.
A @code{-} character before the stream identifier creates a "negative" mapping.
It disables matching streams from already created mappings.
An alternative @var{[linklabel]} form will map outputs from complex filter
graphs (see the @option{-filter_complex} option) to the output file.
@var{linklabel} must correspond to a defined output link label in the graph.
For example, to map ALL streams from the first input file to output
@example
ffmpeg -i INPUT -map 0 output
@end example
For example, if you have two audio streams in the first input file,
these streams are identified by "0:0" and "0:1". You can use
@code{-map} to select which streams to place in an output file. For
example:
@example
ffmpeg -i INPUT -map 0:1 out.wav
@end example
will map the input stream in @file{INPUT} identified by "0:1" to
the (single) output stream in @file{out.wav}.
For example, to select the stream with index 2 from input file
@file{a.mov} (specified by the identifier "0:2"), and stream with
index 6 from input @file{b.mov} (specified by the identifier "1:6"),
and copy them to the output file @file{out.mov}:
@example
ffmpeg -i a.mov -i b.mov -c copy -map 0:2 -map 1:6 out.mov
@end example
To select all video and the third audio stream from an input file:
@example
ffmpeg -i INPUT -map 0:v -map 0:a:2 OUTPUT
@end example
To map all the streams except the second audio, use negative mappings
@example
ffmpeg -i INPUT -map 0 -map -0:a:1 OUTPUT
@end example
Note that using this option disables the default mappings for this output file.
@item -map_channel [@var{input_file_id}.@var{stream_specifier}.@var{channel_id}|-1][:@var{output_file_id}.@var{stream_specifier}]
Map an audio channel from a given input to an output. If
@var{output_file_id}.@var{stream_specifier} is not set, the audio channel will
be mapped on all the audio streams.
Using "-1" instead of
@var{input_file_id}.@var{stream_specifier}.@var{channel_id} will map a muted
channel.
For example, assuming @var{INPUT} is a stereo audio file, you can switch the
two audio channels with the following command:
@example
ffmpeg -i INPUT -map_channel 0.0.1 -map_channel 0.0.0 OUTPUT
@end example
If you want to mute the first channel and keep the second:
@example
ffmpeg -i INPUT -map_channel -1 -map_channel 0.0.1 OUTPUT
@end example
The order of the "-map_channel" option specifies the order of the channels in
the output stream. The output channel layout is guessed from the number of
channels mapped (mono if one "-map_channel", stereo if two, etc.). Using "-ac"
in combination of "-map_channel" makes the channel gain levels to be updated if
input and output channel layouts don't match (for instance two "-map_channel"
options and "-ac 6").
You can also extract each channel of an input to specific outputs; the following
command extracts two channels of the @var{INPUT} audio stream (file 0, stream 0)
to the respective @var{OUTPUT_CH0} and @var{OUTPUT_CH1} outputs:
@example
ffmpeg -i INPUT -map_channel 0.0.0 OUTPUT_CH0 -map_channel 0.0.1 OUTPUT_CH1
@end example
The following example splits the channels of a stereo input into two separate
streams, which are put into the same output file:
@example
ffmpeg -i stereo.wav -map 0:0 -map 0:0 -map_channel 0.0.0:0.0 -map_channel 0.0.1:0.1 -y out.ogg
@end example
Note that currently each output stream can only contain channels from a single
input stream; you can't for example use "-map_channel" to pick multiple input
audio channels contained in different streams (from the same or different files)
and merge them into a single output stream. It is therefore not currently
possible, for example, to turn two separate mono streams into a single stereo
stream. However splitting a stereo stream into two single channel mono streams
is possible.
If you need this feature, a possible workaround is to use the @emph{amerge}
filter. For example, if you need to merge a media (here @file{input.mkv}) with 2
mono audio streams into one single stereo channel audio stream (and keep the
video stream), you can use the following command:
@example
ffmpeg -i input.mkv -filter_complex "[0:1] [0:2] amerge" -c:a pcm_s16le -c:v copy output.mkv
@end example
@item -map_metadata[:@var{metadata_spec_out}] @var{infile}[:@var{metadata_spec_in}] (@emph{output,per-metadata})
Set metadata information of the next output file from @var{infile}. Note that
those are file indices (zero-based), not filenames.
Optional @var{metadata_spec_in/out} parameters specify, which metadata to copy.
A metadata specifier can have the following forms:
@table @option
@item @var{g}
global metadata, i.e. metadata that applies to the whole file
@item @var{s}[:@var{stream_spec}]
per-stream metadata. @var{stream_spec} is a stream specifier as described
in the @ref{Stream specifiers} chapter. In an input metadata specifier, the first
matching stream is copied from. In an output metadata specifier, all matching
streams are copied to.
@item @var{c}:@var{chapter_index}
per-chapter metadata. @var{chapter_index} is the zero-based chapter index.
@item @var{p}:@var{program_index}
per-program metadata. @var{program_index} is the zero-based program index.
@end table
If metadata specifier is omitted, it defaults to global.
By default, global metadata is copied from the first input file,
per-stream and per-chapter metadata is copied along with streams/chapters. These
default mappings are disabled by creating any mapping of the relevant type. A negative
file index can be used to create a dummy mapping that just disables automatic copying.
For example to copy metadata from the first stream of the input file to global metadata
of the output file:
@example
ffmpeg -i in.ogg -map_metadata 0:s:0 out.mp3
@end example
To do the reverse, i.e. copy global metadata to all audio streams:
@example
ffmpeg -i in.mkv -map_metadata:s:a 0:g out.mkv
@end example
Note that simple @code{0} would work as well in this example, since global
metadata is assumed by default.
@item -map_chapters @var{input_file_index} (@emph{output})
Copy chapters from input file with index @var{input_file_index} to the next
output file. If no chapter mapping is specified, then chapters are copied from
the first input file with at least one chapter. Use a negative file index to
disable any chapter copying.
@item -benchmark (@emph{global})
Show benchmarking information at the end of an encode.
Shows CPU time used and maximum memory consumption.
Maximum memory consumption is not supported on all systems,
it will usually display as 0 if not supported.
@item -benchmark_all (@emph{global})
Show benchmarking information during the encode.
Shows CPU time used in various steps (audio/video encode/decode).
@item -timelimit @var{duration} (@emph{global})
Exit after ffmpeg has been running for @var{duration} seconds.
@item -dump (@emph{global})
Dump each input packet to stderr.
@item -hex (@emph{global})
When dumping packets, also dump the payload.
@item -re (@emph{input})
Read input at native frame rate. Mainly used to simulate a grab device.
or live input stream (e.g. when reading from a file). Should not be used
with actual grab devices or live input streams (where it can cause packet
loss).
By default @command{ffmpeg} attempts to read the input(s) as fast as possible.
This option will slow down the reading of the input(s) to the native frame rate
of the input(s). It is useful for real-time output (e.g. live streaming).
@item -loop_input
Loop over the input stream. Currently it works only for image
streams. This option is used for automatic FFserver testing.
This option is deprecated, use -loop 1.
@item -loop_output @var{number_of_times}
Repeatedly loop output for formats that support looping such as animated GIF
(0 will loop the output infinitely).
This option is deprecated, use -loop.
@item -vsync @var{parameter}
Video sync method.
For compatibility reasons old values can be specified as numbers.
Newly added values will have to be specified as strings always.
@table @option
@item 0, passthrough
Each frame is passed with its timestamp from the demuxer to the muxer.
@item 1, cfr
Frames will be duplicated and dropped to achieve exactly the requested
constant frame rate.
@item 2, vfr
Frames are passed through with their timestamp or dropped so as to
prevent 2 frames from having the same timestamp.
@item drop
As passthrough but destroys all timestamps, making the muxer generate
fresh timestamps based on frame-rate.
@item -1, auto
Chooses between 1 and 2 depending on muxer capabilities. This is the
default method.
@end table
Note that the timestamps may be further modified by the muxer, after this.
For example, in the case that the format option @option{avoid_negative_ts}
is enabled.
With -map you can select from which stream the timestamps should be
taken. You can leave either video or audio unchanged and sync the
remaining stream(s) to the unchanged one.
@item -async @var{samples_per_second}
Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
the parameter is the maximum samples per second by which the audio is changed.
-async 1 is a special case where only the start of the audio stream is corrected
without any later correction.
Note that the timestamps may be further modified by the muxer, after this.
For example, in the case that the format option @option{avoid_negative_ts}
is enabled.
This option has been deprecated. Use the @code{aresample} audio filter instead.
@item -copyts
Do not process input timestamps, but keep their values without trying
to sanitize them. In particular, do not remove the initial start time
offset value.
Note that, depending on the @option{vsync} option or on specific muxer
processing (e.g. in case the format option @option{avoid_negative_ts}
is enabled) the output timestamps may mismatch with the input
timestamps even when this option is selected.
@item -copytb @var{mode}
Specify how to set the encoder timebase when stream copying. @var{mode} is an
integer numeric value, and can assume one of the following values:
@table @option
@item 1
Use the demuxer timebase.
The time base is copied to the output encoder from the corresponding input
demuxer. This is sometimes required to avoid non monotonically increasing
timestamps when copying video streams with variable frame rate.
@item 0
Use the decoder timebase.
The time base is copied to the output encoder from the corresponding input
decoder.
@item -1
Try to make the choice automatically, in order to generate a sane output.
@end table
Default value is -1.
@item -shortest (@emph{output})
Finish encoding when the shortest input stream ends.
@item -dts_delta_threshold
Timestamp discontinuity delta threshold.
@item -muxdelay @var{seconds} (@emph{input})
Set the maximum demux-decode delay.
@item -muxpreload @var{seconds} (@emph{input})
Set the initial demux-decode delay.
@item -streamid @var{output-stream-index}:@var{new-value} (@emph{output})
Assign a new stream-id value to an output stream. This option should be
specified prior to the output filename to which it applies.
For the situation where multiple output files exist, a streamid
may be reassigned to a different value.
For example, to set the stream 0 PID to 33 and the stream 1 PID to 36 for
an output mpegts file:
@example
ffmpeg -i infile -streamid 0:33 -streamid 1:36 out.ts
@end example
@item -bsf[:@var{stream_specifier}] @var{bitstream_filters} (@emph{output,per-stream})
Set bitstream filters for matching streams. @var{bitstream_filters} is
a comma-separated list of bitstream filters. Use the @code{-bsfs} option
to get the list of bitstream filters.
@example
ffmpeg -i h264.mp4 -c:v copy -bsf:v h264_mp4toannexb -an out.h264
@end example
@example
ffmpeg -i file.mov -an -vn -bsf:s mov2textsub -c:s copy -f rawvideo sub.txt
@end example
@item -tag[:@var{stream_specifier}] @var{codec_tag} (@emph{per-stream})
Force a tag/fourcc for matching streams.
@item -timecode @var{hh}:@var{mm}:@var{ss}SEP@var{ff}
Specify Timecode for writing. @var{SEP} is ':' for non drop timecode and ';'
(or '.') for drop.
@example
ffmpeg -i input.mpg -timecode 01:02:03.04 -r 30000/1001 -s ntsc output.mpg
@end example
@anchor{filter_complex_option}
@item -filter_complex @var{filtergraph} (@emph{global})
Define a complex filtergraph, i.e. one with arbitrary number of inputs and/or
outputs. For simple graphs -- those with one input and one output of the same
type -- see the @option{-filter} options. @var{filtergraph} is a description of
the filtergraph, as described in the ``Filtergraph syntax'' section of the
ffmpeg-filters manual.
Input link labels must refer to input streams using the
@code{[file_index:stream_specifier]} syntax (i.e. the same as @option{-map}
uses). If @var{stream_specifier} matches multiple streams, the first one will be
used. An unlabeled input will be connected to the first unused input stream of
the matching type.
Output link labels are referred to with @option{-map}. Unlabeled outputs are
added to the first output file.
Note that with this option it is possible to use only lavfi sources without
normal input files.
For example, to overlay an image over video
@example
ffmpeg -i video.mkv -i image.png -filter_complex '[0:v][1:v]overlay[out]' -map
'[out]' out.mkv
@end example
Here @code{[0:v]} refers to the first video stream in the first input file,
which is linked to the first (main) input of the overlay filter. Similarly the
first video stream in the second input is linked to the second (overlay) input
of overlay.
Assuming there is only one video stream in each input file, we can omit input
labels, so the above is equivalent to
@example
ffmpeg -i video.mkv -i image.png -filter_complex 'overlay[out]' -map
'[out]' out.mkv
@end example
Furthermore we can omit the output label and the single output from the filter
graph will be added to the output file automatically, so we can simply write
@example
ffmpeg -i video.mkv -i image.png -filter_complex 'overlay' out.mkv
@end example
To generate 5 seconds of pure red video using lavfi @code{color} source:
@example
ffmpeg -filter_complex 'color=c=red' -t 5 out.mkv
@end example
@item -lavfi @var{filtergraph} (@emph{global})
Define a complex filtergraph, i.e. one with arbitrary number of inputs and/or
outputs. Equivalent to @option{-filter_complex}.
@item -filter_complex_script @var{filename} (@emph{global})
This option is similar to @option{-filter_complex}, the only difference is that
its argument is the name of the file from which a complex filtergraph
description is to be read.
@item -accurate_seek (@emph{input})
This option enables or disables accurate seeking in input files with the
@option{-ss} option. It is enabled by default, so seeking is accurate when
transcoding. Use @option{-noaccurate_seek} to disable it, which may be useful
e.g. when copying some streams and transcoding the others.
@item -override_ffserver (@emph{global})
Overrides the input specifications from ffserver. Using this option you can
map any input stream to ffserver and control many aspects of the encoding from
ffmpeg. Without this option ffmpeg will transmit to ffserver what is requested by
ffserver.
The option is intended for cases where features are needed that cannot be
specified to ffserver but can be to ffmpeg.
@end table
As a special exception, you can use a bitmap subtitle stream as input: it
will be converted into a video with the same size as the largest video in
the file, or 720x576 if no video is present. Note that this is an
experimental and temporary solution. It will be removed once libavfilter has
proper support for subtitles.
For example, to hardcode subtitles on top of a DVB-T recording stored in
MPEG-TS format, delaying the subtitles by 1 second:
@example
ffmpeg -i input.ts -filter_complex \
'[#0x2ef] setpts=PTS+1/TB [sub] ; [#0x2d0] [sub] overlay' \
-sn -map '#0x2dc' output.mkv
@end example
(0x2d0, 0x2dc and 0x2ef are the MPEG-TS PIDs of respectively the video,
audio and subtitles streams; 0:0, 0:3 and 0:7 would have worked too)
@section Preset files
A preset file contains a sequence of @var{option}=@var{value} pairs,
one for each line, specifying a sequence of options which would be
awkward to specify on the command line. Lines starting with the hash
('#') character are ignored and are used to provide comments. Check
the @file{presets} directory in the FFmpeg source tree for examples.
Preset files are specified with the @code{vpre}, @code{apre},
@code{spre}, and @code{fpre} options. The @code{fpre} option takes the
filename of the preset instead of a preset name as input and can be
used for any kind of codec. For the @code{vpre}, @code{apre}, and
@code{spre} options, the options specified in a preset file are
applied to the currently selected codec of the same type as the preset
option.
The argument passed to the @code{vpre}, @code{apre}, and @code{spre}
preset options identifies the preset file to use according to the
following rules:
First ffmpeg searches for a file named @var{arg}.ffpreset in the
directories @file{$FFMPEG_DATADIR} (if set), and @file{$HOME/.ffmpeg}, and in
the datadir defined at configuration time (usually @file{PREFIX/share/ffmpeg})
or in a @file{ffpresets} folder along the executable on win32,
in that order. For example, if the argument is @code{libvpx-1080p}, it will
search for the file @file{libvpx-1080p.ffpreset}.
If no such file is found, then ffmpeg will search for a file named
@var{codec_name}-@var{arg}.ffpreset in the above-mentioned
directories, where @var{codec_name} is the name of the codec to which
the preset file options will be applied. For example, if you select
the video codec with @code{-vcodec libvpx} and use @code{-vpre 1080p},
then it will search for the file @file{libvpx-1080p.ffpreset}.
@c man end OPTIONS
@chapter Tips
@c man begin TIPS
@itemize
@item
For streaming at very low bitrates, use a low frame rate
and a small GOP size. This is especially true for RealVideo where
the Linux player does not seem to be very fast, so it can miss
frames. An example is:
@example
ffmpeg -g 3 -r 3 -t 10 -b:v 50k -s qcif -f rv10 /tmp/b.rm
@end example
@item
The parameter 'q' which is displayed while encoding is the current
quantizer. The value 1 indicates that a very good quality could
be achieved. The value 31 indicates the worst quality. If q=31 appears
too often, it means that the encoder cannot compress enough to meet
your bitrate. You must either increase the bitrate, decrease the
frame rate or decrease the frame size.
@item
If your computer is not fast enough, you can speed up the
compression at the expense of the compression ratio. You can use
'-me zero' to speed up motion estimation, and '-g 0' to disable
motion estimation completely (you have only I-frames, which means it
is about as good as JPEG compression).
@item
To have very low audio bitrates, reduce the sampling frequency
(down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
@item
To have a constant quality (but a variable bitrate), use the option
'-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
quality).
@end itemize
@c man end TIPS
@chapter Examples
@c man begin EXAMPLES
@section Preset files
A preset file contains a sequence of @var{option=value} pairs, one for
each line, specifying a sequence of options which can be specified also on
the command line. Lines starting with the hash ('#') character are ignored and
are used to provide comments. Empty lines are also ignored. Check the
@file{presets} directory in the FFmpeg source tree for examples.
Preset files are specified with the @code{pre} option, this option takes a
preset name as input. FFmpeg searches for a file named @var{preset_name}.avpreset in
the directories @file{$AVCONV_DATADIR} (if set), and @file{$HOME/.ffmpeg}, and in
the data directory defined at configuration time (usually @file{$PREFIX/share/ffmpeg})
in that order. For example, if the argument is @code{libx264-max}, it will
search for the file @file{libx264-max.avpreset}.
@section Video and Audio grabbing
If you specify the input format and device then ffmpeg can grab video
and audio directly.
@example
ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
@end example
Or with an ALSA audio source (mono input, card id 1) instead of OSS:
@example
ffmpeg -f alsa -ac 1 -i hw:1 -f video4linux2 -i /dev/video0 /tmp/out.mpg
@end example
Note that you must activate the right video source and channel before
launching ffmpeg with any TV viewer such as
@uref{http://linux.bytesex.org/xawtv/, xawtv} by Gerd Knorr. You also
have to set the audio recording levels correctly with a
standard mixer.
@section X11 grabbing
Grab the X11 display with ffmpeg via
@example
ffmpeg -f x11grab -video_size cif -framerate 25 -i :0.0 /tmp/out.mpg
@end example
0.0 is display.screen number of your X11 server, same as
the DISPLAY environment variable.
@example
ffmpeg -f x11grab -video_size cif -framerate 25 -i :0.0+10,20 /tmp/out.mpg
@end example
0.0 is display.screen number of your X11 server, same as the DISPLAY environment
variable. 10 is the x-offset and 20 the y-offset for the grabbing.
@section Video and Audio file format conversion
Any supported file format and protocol can serve as input to ffmpeg:
Examples:
@itemize
@item
You can use YUV files as input:
@example
ffmpeg -i /tmp/test%d.Y /tmp/out.mpg
@end example
It will use the files:
@example
/tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
/tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
@end example
The Y files use twice the resolution of the U and V files. They are
raw files, without header. They can be generated by all decent video
decoders. You must specify the size of the image with the @option{-s} option
if ffmpeg cannot guess it.
@item
You can input from a raw YUV420P file:
@example
ffmpeg -i /tmp/test.yuv /tmp/out.avi
@end example
test.yuv is a file containing raw YUV planar data. Each frame is composed
of the Y plane followed by the U and V planes at half vertical and
horizontal resolution.
@item
You can output to a raw YUV420P file:
@example
ffmpeg -i mydivx.avi hugefile.yuv
@end example
@item
You can set several input files and output files:
@example
ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
@end example
Converts the audio file a.wav and the raw YUV video file a.yuv
to MPEG file a.mpg.
@item
You can also do audio and video conversions at the same time:
@example
ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2
@end example
Converts a.wav to MPEG audio at 22050 Hz sample rate.
@item
You can encode to several formats at the same time and define a
mapping from input stream to output streams:
@example
ffmpeg -i /tmp/a.wav -map 0:a -b:a 64k /tmp/a.mp2 -map 0:a -b:a 128k /tmp/b.mp2
@end example
Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
file:index' specifies which input stream is used for each output
stream, in the order of the definition of output streams.
@item
You can transcode decrypted VOBs:
@example
ffmpeg -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a libmp3lame -b:a 128k snatch.avi
@end example
This is a typical DVD ripping example; the input is a VOB file, the
output an AVI file with MPEG-4 video and MP3 audio. Note that in this
command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
input video. Furthermore, the audio stream is MP3-encoded so you need
to enable LAME support by passing @code{--enable-libmp3lame} to configure.
The mapping is particularly useful for DVD transcoding
to get the desired audio language.
NOTE: To see the supported input formats, use @code{ffmpeg -formats}.
@item
You can extract images from a video, or create a video from many images:
For extracting images from a video:
@example
ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
@end example
This will extract one video frame per second from the video and will
output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
etc. Images will be rescaled to fit the new WxH values.
If you want to extract just a limited number of frames, you can use the
above command in combination with the -vframes or -t option, or in
combination with -ss to start extracting from a certain point in time.
For creating a video from many images:
@example
ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
@end example
The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
composed of three digits padded with zeroes to express the sequence
number. It is the same syntax supported by the C printf function, but
only formats accepting a normal integer are suitable.
When importing an image sequence, -i also supports expanding
shell-like wildcard patterns (globbing) internally, by selecting the
image2-specific @code{-pattern_type glob} option.
For example, for creating a video from filenames matching the glob pattern
@code{foo-*.jpeg}:
@example
ffmpeg -f image2 -pattern_type glob -i 'foo-*.jpeg' -r 12 -s WxH foo.avi
@end example
@item
You can put many streams of the same type in the output:
@example
ffmpeg -i test1.avi -i test2.avi -map 0:3 -map 0:2 -map 0:1 -map 0:0 -c copy test12.nut
@end example
The resulting output file @file{test12.avi} will contain first four streams from
the input file in reverse order.
@item
To force CBR video output:
@example
ffmpeg -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
@end example
@item
The four options lmin, lmax, mblmin and mblmax use 'lambda' units,
but you may use the QP2LAMBDA constant to easily convert from 'q' units:
@example
ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
@end example
@end itemize
@c man end EXAMPLES
@include config.texi
@ifset config-all
@ifset config-avutil
@include utils.texi
@end ifset
@ifset config-avcodec
@include codecs.texi
@include bitstream_filters.texi
@end ifset
@ifset config-avformat
@include formats.texi
@include protocols.texi
@end ifset
@ifset config-avdevice
@include devices.texi
@end ifset
@ifset config-swresample
@include resampler.texi
@end ifset
@ifset config-swscale
@include scaler.texi
@end ifset
@ifset config-avfilter
@include filters.texi
@end ifset
@end ifset
@chapter See Also
@ifhtml
@ifset config-all
@url{ffmpeg.html,ffmpeg}
@end ifset
@ifset config-not-all
@url{ffmpeg-all.html,ffmpeg-all},
@end ifset
@url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@url{ffmpeg-codecs.html,ffmpeg-codecs},
@url{ffmpeg-bitstream-filters.html,ffmpeg-bitstream-filters},
@url{ffmpeg-formats.html,ffmpeg-formats},
@url{ffmpeg-devices.html,ffmpeg-devices},
@url{ffmpeg-protocols.html,ffmpeg-protocols},
@url{ffmpeg-filters.html,ffmpeg-filters}
@end ifhtml
@ifnothtml
@ifset config-all
ffmpeg(1),
@end ifset
@ifset config-not-all
ffmpeg-all(1),
@end ifset
ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffmpeg
@settitle ffmpeg video converter
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffmpeg.txt
0,0 → 1,47
:
ffmpeg.c : libav*
======== : ======
:
:
--------------------------------:---> AVStream...
InputStream input_streams[] / :
/ :
InputFile input_files[] +==========================+ / ^ :
------> 0 | : st ---:-----------:--/ : :
^ +------+-----------+-----+ / +--------------------------+ : :
: | :ist_index--:-----:---------/ 1 | : st : | : :
: +------+-----------+-----+ +==========================+ : :
nb_input_files : | :ist_index--:-----:------------------> 2 | : st : | : :
: +------+-----------+-----+ +--------------------------+ : nb_input_streams :
: | :ist_index : | 3 | ... | : :
v +------+-----------+-----+ +--------------------------+ : :
--> 4 | | : :
| +--------------------------+ : :
| 5 | | : :
| +==========================+ v :
| :
| :
| :
| :
--------- --------------------------------:---> AVStream...
\ / :
OutputStream output_streams[] / :
\ / :
+======\======================/======+ ^ :
------> 0 | : source_index : st-:--- | : :
OutputFile output_files[] / +------------------------------------+ : :
/ 1 | : : : | : :
^ +------+------------+-----+ / +------------------------------------+ : :
: | : ost_index -:-----:------/ 2 | : : : | : :
nb_output_files : +------+------------+-----+ +====================================+ : :
: | : ost_index -:-----|-----------------> 3 | : : : | : :
: +------+------------+-----+ +------------------------------------+ : nb_output_streams :
: | : : | 4 | | : :
: +------+------------+-----+ +------------------------------------+ : :
: | : : | 5 | | : :
v +------+------------+-----+ +------------------------------------+ : :
6 | | : :
+------------------------------------+ : :
7 | | : :
+====================================+ v :
:

/contrib/sdk/sources/ffmpeg/doc/ffplay.texi
0,0 → 1,277
\input texinfo @c -*- texinfo -*-
@settitle ffplay Documentation
@titlepage
@center @titlefont{ffplay Documentation}
@end titlepage
@top
@contents
@chapter Synopsis
ffplay [@var{options}] [@file{input_file}]
@chapter Description
@c man begin DESCRIPTION
FFplay is a very simple and portable media player using the FFmpeg
libraries and the SDL library. It is mostly used as a testbed for the
various FFmpeg APIs.
@c man end
@chapter Options
@c man begin OPTIONS
@include fftools-common-opts.texi
@section Main options
@table @option
@item -x @var{width}
Force displayed width.
@item -y @var{height}
Force displayed height.
@item -s @var{size}
Set frame size (WxH or abbreviation), needed for videos which do
not contain a header with the frame size like raw YUV. This option
has been deprecated in favor of private options, try -video_size.
@item -an
Disable audio.
@item -vn
Disable video.
@item -ss @var{pos}
Seek to a given position in seconds.
@item -t @var{duration}
play <duration> seconds of audio/video
@item -bytes
Seek by bytes.
@item -nodisp
Disable graphical display.
@item -f @var{fmt}
Force format.
@item -window_title @var{title}
Set window title (default is the input filename).
@item -loop @var{number}
Loops movie playback <number> times. 0 means forever.
@item -showmode @var{mode}
Set the show mode to use.
Available values for @var{mode} are:
@table @samp
@item 0, video
show video
@item 1, waves
show audio waves
@item 2, rdft
show audio frequency band using RDFT ((Inverse) Real Discrete Fourier Transform)
@end table
Default value is "video", if video is not present or cannot be played
"rdft" is automatically selected.
You can interactively cycle through the available show modes by
pressing the key @key{w}.
@item -vf @var{filtergraph}
Create the filtergraph specified by @var{filtergraph} and use it to
filter the video stream.
@var{filtergraph} is a description of the filtergraph to apply to
the stream, and must have a single video input and a single video
output. In the filtergraph, the input is associated to the label
@code{in}, and the output to the label @code{out}. See the
ffmpeg-filters manual for more information about the filtergraph
syntax.
@item -af @var{filtergraph}
@var{filtergraph} is a description of the filtergraph to apply to
the input audio.
Use the option "-filters" to show all the available filters (including
sources and sinks).
@item -i @var{input_file}
Read @var{input_file}.
@end table
@section Advanced options
@table @option
@item -pix_fmt @var{format}
Set pixel format.
This option has been deprecated in favor of private options, try -pixel_format.
@item -stats
Print several playback statistics, in particular show the stream
duration, the codec parameters, the current position in the stream and
the audio/video synchronisation drift. It is on by default, to
explicitly disable it you need to specify @code{-nostats}.
@item -bug
Work around bugs.
@item -fast
Non-spec-compliant optimizations.
@item -genpts
Generate pts.
@item -rtp_tcp
Force RTP/TCP protocol usage instead of RTP/UDP. It is only meaningful
if you are streaming with the RTSP protocol.
@item -sync @var{type}
Set the master clock to audio (@code{type=audio}), video
(@code{type=video}) or external (@code{type=ext}). Default is audio. The
master clock is used to control audio-video synchronization. Most media
players use audio as master clock, but in some cases (streaming or high
quality broadcast) it is necessary to change that. This option is mainly
used for debugging purposes.
@item -threads @var{count}
Set the thread count.
@item -ast @var{audio_stream_number}
Select the desired audio stream number, counting from 0. The number
refers to the list of all the input audio streams. If it is greater
than the number of audio streams minus one, then the last one is
selected, if it is negative the audio playback is disabled.
@item -vst @var{video_stream_number}
Select the desired video stream number, counting from 0. The number
refers to the list of all the input video streams. If it is greater
than the number of video streams minus one, then the last one is
selected, if it is negative the video playback is disabled.
@item -sst @var{subtitle_stream_number}
Select the desired subtitle stream number, counting from 0. The number
refers to the list of all the input subtitle streams. If it is greater
than the number of subtitle streams minus one, then the last one is
selected, if it is negative the subtitle rendering is disabled.
@item -autoexit
Exit when video is done playing.
@item -exitonkeydown
Exit if any key is pressed.
@item -exitonmousedown
Exit if any mouse button is pressed.
@item -codec:@var{media_specifier} @var{codec_name}
Force a specific decoder implementation for the stream identified by
@var{media_specifier}, which can assume the values @code{a} (audio),
@code{v} (video), and @code{s} subtitle.
@item -acodec @var{codec_name}
Force a specific audio decoder.
@item -vcodec @var{codec_name}
Force a specific video decoder.
@item -scodec @var{codec_name}
Force a specific subtitle decoder.
@end table
@section While playing
@table @key
@item q, ESC
Quit.
@item f
Toggle full screen.
@item p, SPC
Pause.
@item a
Cycle audio channel in the curret program.
@item v
Cycle video channel.
@item t
Cycle subtitle channel in the current program.
@item c
Cycle program.
@item w
Show audio waves.
@item left/right
Seek backward/forward 10 seconds.
@item down/up
Seek backward/forward 1 minute.
@item page down/page up
Seek backward/forward 10 minutes.
@item mouse click
Seek to percentage in file corresponding to fraction of width.
@end table
@c man end
@include config.texi
@ifset config-all
@ifset config-avutil
@include utils.texi
@end ifset
@ifset config-avcodec
@include codecs.texi
@include bitstream_filters.texi
@end ifset
@ifset config-avformat
@include formats.texi
@include protocols.texi
@end ifset
@ifset config-avdevice
@include devices.texi
@end ifset
@ifset config-swresample
@include resampler.texi
@end ifset
@ifset config-swscale
@include scaler.texi
@end ifset
@ifset config-avfilter
@include filters.texi
@end ifset
@end ifset
@chapter See Also
@ifhtml
@ifset config-all
@url{ffplay.html,ffplay},
@end ifset
@ifset config-not-all
@url{ffplay-all.html,ffmpeg-all},
@end ifset
@url{ffmpeg.html,ffmpeg}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@url{ffmpeg-codecs.html,ffmpeg-codecs},
@url{ffmpeg-bitstream-filters.html,ffmpeg-bitstream-filters},
@url{ffmpeg-formats.html,ffmpeg-formats},
@url{ffmpeg-devices.html,ffmpeg-devices},
@url{ffmpeg-protocols.html,ffmpeg-protocols},
@url{ffmpeg-filters.html,ffmpeg-filters}
@end ifhtml
@ifnothtml
@ifset config-all
ffplay(1),
@end ifset
@ifset config-not-all
ffplay-all(1),
@end ifset
ffmpeg(1), ffprobe(1), ffserver(1),
ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffplay
@settitle FFplay media player
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffprobe.texi
0,0 → 1,637
\input texinfo @c -*- texinfo -*-
@settitle ffprobe Documentation
@titlepage
@center @titlefont{ffprobe Documentation}
@end titlepage
@top
@contents
@chapter Synopsis
ffprobe [@var{options}] [@file{input_file}]
@chapter Description
@c man begin DESCRIPTION
ffprobe gathers information from multimedia streams and prints it in
human- and machine-readable fashion.
For example it can be used to check the format of the container used
by a multimedia stream and the format and type of each media stream
contained in it.
If a filename is specified in input, ffprobe will try to open and
probe the file content. If the file cannot be opened or recognized as
a multimedia file, a positive exit code is returned.
ffprobe may be employed both as a standalone application or in
combination with a textual filter, which may perform more
sophisticated processing, e.g. statistical processing or plotting.
Options are used to list some of the formats supported by ffprobe or
for specifying which information to display, and for setting how
ffprobe will show it.
ffprobe output is designed to be easily parsable by a textual filter,
and consists of one or more sections of a form defined by the selected
writer, which is specified by the @option{print_format} option.
Sections may contain other nested sections, and are identified by a
name (which may be shared by other sections), and an unique
name. See the output of @option{sections}.
Metadata tags stored in the container or in the streams are recognized
and printed in the corresponding "FORMAT", "STREAM" or "PROGRAM_STREAM"
section.
@c man end
@chapter Options
@c man begin OPTIONS
@include fftools-common-opts.texi
@section Main options
@table @option
@item -f @var{format}
Force format to use.
@item -unit
Show the unit of the displayed values.
@item -prefix
Use SI prefixes for the displayed values.
Unless the "-byte_binary_prefix" option is used all the prefixes
are decimal.
@item -byte_binary_prefix
Force the use of binary prefixes for byte values.
@item -sexagesimal
Use sexagesimal format HH:MM:SS.MICROSECONDS for time values.
@item -pretty
Prettify the format of the displayed values, it corresponds to the
options "-unit -prefix -byte_binary_prefix -sexagesimal".
@item -of, -print_format @var{writer_name}[=@var{writer_options}]
Set the output printing format.
@var{writer_name} specifies the name of the writer, and
@var{writer_options} specifies the options to be passed to the writer.
For example for printing the output in JSON format, specify:
@example
-print_format json
@end example
For more details on the available output printing formats, see the
Writers section below.
@item -sections
Print sections structure and section information, and exit. The output
is not meant to be parsed by a machine.
@item -select_streams @var{stream_specifier}
Select only the streams specified by @var{stream_specifier}. This
option affects only the options related to streams
(e.g. @code{show_streams}, @code{show_packets}, etc.).
For example to show only audio streams, you can use the command:
@example
ffprobe -show_streams -select_streams a INPUT
@end example
To show only video packets belonging to the video stream with index 1:
@example
ffprobe -show_packets -select_streams v:1 INPUT
@end example
@item -show_data
Show payload data, as a hexadecimal and ASCII dump. Coupled with
@option{-show_packets}, it will dump the packets' data. Coupled with
@option{-show_streams}, it will dump the codec extradata.
The dump is printed as the "data" field. It may contain newlines.
@item -show_error
Show information about the error found when trying to probe the input.
The error information is printed within a section with name "ERROR".
@item -show_format
Show information about the container format of the input multimedia
stream.
All the container format information is printed within a section with
name "FORMAT".
@item -show_format_entry @var{name}
Like @option{-show_format}, but only prints the specified entry of the
container format information, rather than all. This option may be given more
than once, then all specified entries will be shown.
This option is deprecated, use @code{show_entries} instead.
@item -show_entries @var{section_entries}
Set list of entries to show.
Entries are specified according to the following
syntax. @var{section_entries} contains a list of section entries
separated by @code{:}. Each section entry is composed by a section
name (or unique name), optionally followed by a list of entries local
to that section, separated by @code{,}.
If section name is specified but is followed by no @code{=}, all
entries are printed to output, together with all the contained
sections. Otherwise only the entries specified in the local section
entries list are printed. In particular, if @code{=} is specified but
the list of local entries is empty, then no entries will be shown for
that section.
Note that the order of specification of the local section entries is
not honored in the output, and the usual display order will be
retained.
The formal syntax is given by:
@example
@var{LOCAL_SECTION_ENTRIES} ::= @var{SECTION_ENTRY_NAME}[,@var{LOCAL_SECTION_ENTRIES}]
@var{SECTION_ENTRY} ::= @var{SECTION_NAME}[=[@var{LOCAL_SECTION_ENTRIES}]]
@var{SECTION_ENTRIES} ::= @var{SECTION_ENTRY}[:@var{SECTION_ENTRIES}]
@end example
For example, to show only the index and type of each stream, and the PTS
time, duration time, and stream index of the packets, you can specify
the argument:
@example
packet=pts_time,duration_time,stream_index : stream=index,codec_type
@end example
To show all the entries in the section "format", but only the codec
type in the section "stream", specify the argument:
@example
format : stream=codec_type
@end example
To show all the tags in the stream and format sections:
@example
format_tags : format_tags
@end example
To show only the @code{title} tag (if available) in the stream
sections:
@example
stream_tags=title
@end example
@item -show_packets
Show information about each packet contained in the input multimedia
stream.
The information for each single packet is printed within a dedicated
section with name "PACKET".
@item -show_frames
Show information about each frame contained in the input multimedia
stream.
The information for each single frame is printed within a dedicated
section with name "FRAME".
@item -show_streams
Show information about each media stream contained in the input
multimedia stream.
Each media stream information is printed within a dedicated section
with name "STREAM".
@item -show_programs
Show information about programs and their streams contained in the input
multimedia stream.
Each media stream information is printed within a dedicated section
with name "PROGRAM_STREAM".
@item -show_chapters
Show information about chapters stored in the format.
Each chapter is printed within a dedicated section with name "CHAPTER".
@item -count_frames
Count the number of frames per stream and report it in the
corresponding stream section.
@item -count_packets
Count the number of packets per stream and report it in the
corresponding stream section.
@item -read_intervals @var{read_intervals}
Read only the specified intervals. @var{read_intervals} must be a
sequence of interval specifications separated by ",".
@command{ffprobe} will seek to the interval starting point, and will
continue reading from that.
Each interval is specified by two optional parts, separated by "%".
The first part specifies the interval start position. It is
interpreted as an abolute position, or as a relative offset from the
current position if it is preceded by the "+" character. If this first
part is not specified, no seeking will be performed when reading this
interval.
The second part specifies the interval end position. It is interpreted
as an absolute position, or as a relative offset from the current
position if it is preceded by the "+" character. If the offset
specification starts with "#", it is interpreted as the number of
packets to read (not including the flushing packets) from the interval
start. If no second part is specified, the program will read until the
end of the input.
Note that seeking is not accurate, thus the actual interval start
point may be different from the specified position. Also, when an
interval duration is specified, the absolute end time will be computed
by adding the duration to the interval start point found by seeking
the file, rather than to the specified start value.
The formal syntax is given by:
@example
@var{INTERVAL} ::= [@var{START}|+@var{START_OFFSET}][%[@var{END}|+@var{END_OFFSET}]]
@var{INTERVALS} ::= @var{INTERVAL}[,@var{INTERVALS}]
@end example
A few examples follow.
@itemize
@item
Seek to time 10, read packets until 20 seconds after the found seek
point, then seek to position @code{01:30} (1 minute and thirty
seconds) and read packets until position @code{01:45}.
@example
10%+20,01:30%01:45
@end example
@item
Read only 42 packets after seeking to position @code{01:23}:
@example
01:23%+#42
@end example
@item
Read only the first 20 seconds from the start:
@example
%+20
@end example
@item
Read from the start until position @code{02:30}:
@example
%02:30
@end example
@end itemize
@item -show_private_data, -private
Show private data, that is data depending on the format of the
particular shown element.
This option is enabled by default, but you may need to disable it
for specific uses, for example when creating XSD-compliant XML output.
@item -show_program_version
Show information related to program version.
Version information is printed within a section with name
"PROGRAM_VERSION".
@item -show_library_versions
Show information related to library versions.
Version information for each library is printed within a section with
name "LIBRARY_VERSION".
@item -show_versions
Show information related to program and library versions. This is the
equivalent of setting both @option{-show_program_version} and
@option{-show_library_versions} options.
@item -bitexact
Force bitexact output, useful to produce output which is not dependent
on the specific build.
@item -i @var{input_file}
Read @var{input_file}.
@end table
@c man end
@chapter Writers
@c man begin WRITERS
A writer defines the output format adopted by @command{ffprobe}, and will be
used for printing all the parts of the output.
A writer may accept one or more arguments, which specify the options
to adopt. The options are specified as a list of @var{key}=@var{value}
pairs, separated by ":".
A description of the currently available writers follows.
@section default
Default format.
Print each section in the form:
@example
[SECTION]
key1=val1
...
keyN=valN
[/SECTION]
@end example
Metadata tags are printed as a line in the corresponding FORMAT, STREAM or
PROGRAM_STREAM section, and are prefixed by the string "TAG:".
A description of the accepted options follows.
@table @option
@item nokey, nk
If set to 1 specify not to print the key of each field. Default value
is 0.
@item noprint_wrappers, nw
If set to 1 specify not to print the section header and footer.
Default value is 0.
@end table
@section compact, csv
Compact and CSV format.
The @code{csv} writer is equivalent to @code{compact}, but supports
different defaults.
Each section is printed on a single line.
If no option is specifid, the output has the form:
@example
section|key1=val1| ... |keyN=valN
@end example
Metadata tags are printed in the corresponding "format" or "stream"
section. A metadata tag key, if printed, is prefixed by the string
"tag:".
The description of the accepted options follows.
@table @option
@item item_sep, s
Specify the character to use for separating fields in the output line.
It must be a single printable character, it is "|" by default ("," for
the @code{csv} writer).
@item nokey, nk
If set to 1 specify not to print the key of each field. Its default
value is 0 (1 for the @code{csv} writer).
@item escape, e
Set the escape mode to use, default to "c" ("csv" for the @code{csv}
writer).
It can assume one of the following values:
@table @option
@item c
Perform C-like escaping. Strings containing a newline ('\n'), carriage
return ('\r'), a tab ('\t'), a form feed ('\f'), the escaping
character ('\') or the item separator character @var{SEP} are escaped using C-like fashioned
escaping, so that a newline is converted to the sequence "\n", a
carriage return to "\r", '\' to "\\" and the separator @var{SEP} is
converted to "\@var{SEP}".
@item csv
Perform CSV-like escaping, as described in RFC4180. Strings
containing a newline ('\n'), a carriage return ('\r'), a double quote
('"'), or @var{SEP} are enclosed in double-quotes.
@item none
Perform no escaping.
@end table
@item print_section, p
Print the section name at the begin of each line if the value is
@code{1}, disable it with value set to @code{0}. Default value is
@code{1}.
@end table
@section flat
Flat format.
A free-form output where each line contains an explicit key=value, such as
"streams.stream.3.tags.foo=bar". The output is shell escaped, so it can be
directly embedded in sh scripts as long as the separator character is an
alphanumeric character or an underscore (see @var{sep_char} option).
The description of the accepted options follows.
@table @option
@item sep_char, s
Separator character used to separate the chapter, the section name, IDs and
potential tags in the printed field key.
Default value is '.'.
@item hierarchical, h
Specify if the section name specification should be hierarchical. If
set to 1, and if there is more than one section in the current
chapter, the section name will be prefixed by the name of the
chapter. A value of 0 will disable this behavior.
Default value is 1.
@end table
@section ini
INI format output.
Print output in an INI based format.
The following conventions are adopted:
@itemize
@item
all key and values are UTF-8
@item
'.' is the subgroup separator
@item
newline, '\t', '\f', '\b' and the following characters are escaped
@item
'\' is the escape character
@item
'#' is the comment indicator
@item
'=' is the key/value separator
@item
':' is not used but usually parsed as key/value separator
@end itemize
This writer accepts options as a list of @var{key}=@var{value} pairs,
separated by ":".
The description of the accepted options follows.
@table @option
@item hierarchical, h
Specify if the section name specification should be hierarchical. If
set to 1, and if there is more than one section in the current
chapter, the section name will be prefixed by the name of the
chapter. A value of 0 will disable this behavior.
Default value is 1.
@end table
@section json
JSON based format.
Each section is printed using JSON notation.
The description of the accepted options follows.
@table @option
@item compact, c
If set to 1 enable compact output, that is each section will be
printed on a single line. Default value is 0.
@end table
For more information about JSON, see @url{http://www.json.org/}.
@section xml
XML based format.
The XML output is described in the XML schema description file
@file{ffprobe.xsd} installed in the FFmpeg datadir.
An updated version of the schema can be retrieved at the url
@url{http://www.ffmpeg.org/schema/ffprobe.xsd}, which redirects to the
latest schema committed into the FFmpeg development source code tree.
Note that the output issued will be compliant to the
@file{ffprobe.xsd} schema only when no special global output options
(@option{unit}, @option{prefix}, @option{byte_binary_prefix},
@option{sexagesimal} etc.) are specified.
The description of the accepted options follows.
@table @option
@item fully_qualified, q
If set to 1 specify if the output should be fully qualified. Default
value is 0.
This is required for generating an XML file which can be validated
through an XSD file.
@item xsd_compliant, x
If set to 1 perform more checks for ensuring that the output is XSD
compliant. Default value is 0.
This option automatically sets @option{fully_qualified} to 1.
@end table
For more information about the XML format, see
@url{http://www.w3.org/XML/}.
@c man end WRITERS
@chapter Timecode
@c man begin TIMECODE
@command{ffprobe} supports Timecode extraction:
@itemize
@item
MPEG1/2 timecode is extracted from the GOP, and is available in the video
stream details (@option{-show_streams}, see @var{timecode}).
@item
MOV timecode is extracted from tmcd track, so is available in the tmcd
stream metadata (@option{-show_streams}, see @var{TAG:timecode}).
@item
DV, GXF and AVI timecodes are available in format metadata
(@option{-show_format}, see @var{TAG:timecode}).
@end itemize
@c man end TIMECODE
@include config.texi
@ifset config-all
@ifset config-avutil
@include utils.texi
@end ifset
@ifset config-avcodec
@include codecs.texi
@include bitstream_filters.texi
@end ifset
@ifset config-avformat
@include formats.texi
@include protocols.texi
@end ifset
@ifset config-avdevice
@include devices.texi
@end ifset
@ifset config-swresample
@include resampler.texi
@end ifset
@ifset config-swscale
@include scaler.texi
@end ifset
@ifset config-avfilter
@include filters.texi
@end ifset
@end ifset
@chapter See Also
@ifhtml
@ifset config-all
@url{ffprobe.html,ffprobe},
@end ifset
@ifset config-not-all
@url{ffprobe-all.html,ffprobe-all},
@end ifset
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@url{ffmpeg-codecs.html,ffmpeg-codecs},
@url{ffmpeg-bitstream-filters.html,ffmpeg-bitstream-filters},
@url{ffmpeg-formats.html,ffmpeg-formats},
@url{ffmpeg-devices.html,ffmpeg-devices},
@url{ffmpeg-protocols.html,ffmpeg-protocols},
@url{ffmpeg-filters.html,ffmpeg-filters}
@end ifhtml
@ifnothtml
@ifset config-all
ffprobe(1),
@end ifset
@ifset config-not-all
ffprobe-all(1),
@end ifset
ffmpeg(1), ffplay(1), ffserver(1),
ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffprobe
@settitle ffprobe media prober
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/ffprobe.xsd
0,0 → 1,245
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.ffmpeg.org/schema/ffprobe"
xmlns:ffprobe="http://www.ffmpeg.org/schema/ffprobe">
<xsd:element name="ffprobe" type="ffprobe:ffprobeType"/>
<xsd:complexType name="ffprobeType">
<xsd:sequence>
<xsd:element name="packets" type="ffprobe:packetsType" minOccurs="0" maxOccurs="1" />
<xsd:element name="frames" type="ffprobe:framesType" minOccurs="0" maxOccurs="1" />
<xsd:element name="streams" type="ffprobe:streamsType" minOccurs="0" maxOccurs="1" />
<xsd:element name="programs" type="ffprobe:programsType" minOccurs="0" maxOccurs="1" />
<xsd:element name="chapters" type="ffprobe:chaptersType" minOccurs="0" maxOccurs="1" />
<xsd:element name="format" type="ffprobe:formatType" minOccurs="0" maxOccurs="1" />
<xsd:element name="error" type="ffprobe:errorType" minOccurs="0" maxOccurs="1" />
<xsd:element name="program_version" type="ffprobe:programVersionType" minOccurs="0" maxOccurs="1" />
<xsd:element name="library_versions" type="ffprobe:libraryVersionsType" minOccurs="0" maxOccurs="1" />
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="packetsType">
<xsd:sequence>
<xsd:element name="packet" type="ffprobe:packetType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="framesType">
<xsd:sequence>
<xsd:element name="frame" type="ffprobe:frameType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="packetType">
<xsd:attribute name="codec_type" type="xsd:string" use="required" />
<xsd:attribute name="stream_index" type="xsd:int" use="required" />
<xsd:attribute name="pts" type="xsd:long" />
<xsd:attribute name="pts_time" type="xsd:float" />
<xsd:attribute name="dts" type="xsd:long" />
<xsd:attribute name="dts_time" type="xsd:float" />
<xsd:attribute name="duration" type="xsd:long" />
<xsd:attribute name="duration_time" type="xsd:float" />
<xsd:attribute name="convergence_duration" type="xsd:long" />
<xsd:attribute name="convergence_duration_time" type="xsd:float" />
<xsd:attribute name="size" type="xsd:long" use="required" />
<xsd:attribute name="pos" type="xsd:long" />
<xsd:attribute name="flags" type="xsd:string" use="required" />
<xsd:attribute name="data" type="xsd:string" />
</xsd:complexType>
<xsd:complexType name="frameType">
<xsd:attribute name="media_type" type="xsd:string" use="required"/>
<xsd:attribute name="key_frame" type="xsd:int" use="required"/>
<xsd:attribute name="pts" type="xsd:long" />
<xsd:attribute name="pts_time" type="xsd:float"/>
<xsd:attribute name="pkt_pts" type="xsd:long" />
<xsd:attribute name="pkt_pts_time" type="xsd:float"/>
<xsd:attribute name="pkt_dts" type="xsd:long" />
<xsd:attribute name="pkt_dts_time" type="xsd:float"/>
<xsd:attribute name="pkt_duration" type="xsd:long" />
<xsd:attribute name="pkt_duration_time" type="xsd:float"/>
<xsd:attribute name="pkt_pos" type="xsd:long" />
<xsd:attribute name="pkt_size" type="xsd:int" />
<!-- audio attributes -->
<xsd:attribute name="sample_fmt" type="xsd:string"/>
<xsd:attribute name="nb_samples" type="xsd:long" />
<xsd:attribute name="channels" type="xsd:int" />
<xsd:attribute name="channel_layout" type="xsd:string"/>
<!-- video attributes -->
<xsd:attribute name="width" type="xsd:long" />
<xsd:attribute name="height" type="xsd:long" />
<xsd:attribute name="pix_fmt" type="xsd:string"/>
<xsd:attribute name="sample_aspect_ratio" type="xsd:string"/>
<xsd:attribute name="pict_type" type="xsd:string"/>
<xsd:attribute name="coded_picture_number" type="xsd:long" />
<xsd:attribute name="display_picture_number" type="xsd:long" />
<xsd:attribute name="interlaced_frame" type="xsd:int" />
<xsd:attribute name="top_field_first" type="xsd:int" />
<xsd:attribute name="repeat_pict" type="xsd:int" />
</xsd:complexType>
<xsd:complexType name="streamsType">
<xsd:sequence>
<xsd:element name="stream" type="ffprobe:streamType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="programsType">
<xsd:sequence>
<xsd:element name="program" type="ffprobe:programType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="streamDispositionType">
<xsd:attribute name="default" type="xsd:int" use="required" />
<xsd:attribute name="dub" type="xsd:int" use="required" />
<xsd:attribute name="original" type="xsd:int" use="required" />
<xsd:attribute name="comment" type="xsd:int" use="required" />
<xsd:attribute name="lyrics" type="xsd:int" use="required" />
<xsd:attribute name="karaoke" type="xsd:int" use="required" />
<xsd:attribute name="forced" type="xsd:int" use="required" />
<xsd:attribute name="hearing_impaired" type="xsd:int" use="required" />
<xsd:attribute name="visual_impaired" type="xsd:int" use="required" />
<xsd:attribute name="clean_effects" type="xsd:int" use="required" />
<xsd:attribute name="attached_pic" type="xsd:int" use="required" />
</xsd:complexType>
<xsd:complexType name="streamType">
<xsd:sequence>
<xsd:element name="disposition" type="ffprobe:streamDispositionType" minOccurs="0" maxOccurs="1"/>
<xsd:element name="tag" type="ffprobe:tagType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="index" type="xsd:int" use="required"/>
<xsd:attribute name="codec_name" type="xsd:string" />
<xsd:attribute name="codec_long_name" type="xsd:string" />
<xsd:attribute name="profile" type="xsd:string" />
<xsd:attribute name="codec_type" type="xsd:string" />
<xsd:attribute name="codec_time_base" type="xsd:string" use="required"/>
<xsd:attribute name="codec_tag" type="xsd:string" use="required"/>
<xsd:attribute name="codec_tag_string" type="xsd:string" use="required"/>
<xsd:attribute name="extradata" type="xsd:string" />
<!-- video attributes -->
<xsd:attribute name="width" type="xsd:int"/>
<xsd:attribute name="height" type="xsd:int"/>
<xsd:attribute name="has_b_frames" type="xsd:int"/>
<xsd:attribute name="sample_aspect_ratio" type="xsd:string"/>
<xsd:attribute name="display_aspect_ratio" type="xsd:string"/>
<xsd:attribute name="pix_fmt" type="xsd:string"/>
<xsd:attribute name="level" type="xsd:int"/>
<xsd:attribute name="timecode" type="xsd:string"/>
<!-- audio attributes -->
<xsd:attribute name="sample_fmt" type="xsd:string"/>
<xsd:attribute name="sample_rate" type="xsd:int"/>
<xsd:attribute name="channels" type="xsd:int"/>
<xsd:attribute name="channel_layout" type="xsd:string"/>
<xsd:attribute name="bits_per_sample" type="xsd:int"/>
<xsd:attribute name="id" type="xsd:string"/>
<xsd:attribute name="r_frame_rate" type="xsd:string" use="required"/>
<xsd:attribute name="avg_frame_rate" type="xsd:string" use="required"/>
<xsd:attribute name="time_base" type="xsd:string" use="required"/>
<xsd:attribute name="start_pts" type="xsd:long"/>
<xsd:attribute name="start_time" type="xsd:float"/>
<xsd:attribute name="duration_ts" type="xsd:long"/>
<xsd:attribute name="duration" type="xsd:float"/>
<xsd:attribute name="bit_rate" type="xsd:int"/>
<xsd:attribute name="nb_frames" type="xsd:int"/>
<xsd:attribute name="nb_read_frames" type="xsd:int"/>
<xsd:attribute name="nb_read_packets" type="xsd:int"/>
</xsd:complexType>
<xsd:complexType name="programType">
<xsd:sequence>
<xsd:element name="tag" type="ffprobe:tagType" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="streams" type="ffprobe:streamsType" minOccurs="0" maxOccurs="1"/>
</xsd:sequence>
<xsd:attribute name="program_id" type="xsd:int" use="required"/>
<xsd:attribute name="program_num" type="xsd:int" use="required"/>
<xsd:attribute name="nb_streams" type="xsd:int" use="required"/>
<xsd:attribute name="start_time" type="xsd:float"/>
<xsd:attribute name="start_pts" type="xsd:long"/>
<xsd:attribute name="end_time" type="xsd:float"/>
<xsd:attribute name="end_pts" type="xsd:long"/>
<xsd:attribute name="pmt_pid" type="xsd:int" use="required"/>
<xsd:attribute name="pcr_pid" type="xsd:int" use="required"/>
</xsd:complexType>
<xsd:complexType name="formatType">
<xsd:sequence>
<xsd:element name="tag" type="ffprobe:tagType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="filename" type="xsd:string" use="required"/>
<xsd:attribute name="nb_streams" type="xsd:int" use="required"/>
<xsd:attribute name="nb_programs" type="xsd:int" use="required"/>
<xsd:attribute name="format_name" type="xsd:string" use="required"/>
<xsd:attribute name="format_long_name" type="xsd:string"/>
<xsd:attribute name="start_time" type="xsd:float"/>
<xsd:attribute name="duration" type="xsd:float"/>
<xsd:attribute name="size" type="xsd:long"/>
<xsd:attribute name="bit_rate" type="xsd:long"/>
<xsd:attribute name="probe_score" type="xsd:int"/>
</xsd:complexType>
<xsd:complexType name="tagType">
<xsd:attribute name="key" type="xsd:string" use="required"/>
<xsd:attribute name="value" type="xsd:string" use="required"/>
</xsd:complexType>
<xsd:complexType name="errorType">
<xsd:attribute name="code" type="xsd:int" use="required"/>
<xsd:attribute name="string" type="xsd:string" use="required"/>
</xsd:complexType>
<xsd:complexType name="programVersionType">
<xsd:attribute name="version" type="xsd:string" use="required"/>
<xsd:attribute name="copyright" type="xsd:string" use="required"/>
<xsd:attribute name="build_date" type="xsd:string" use="required"/>
<xsd:attribute name="build_time" type="xsd:string" use="required"/>
<xsd:attribute name="compiler_type" type="xsd:string" use="required"/>
<xsd:attribute name="compiler_version" type="xsd:string" use="required"/>
<xsd:attribute name="configuration" type="xsd:string" use="required"/>
</xsd:complexType>
<xsd:complexType name="chaptersType">
<xsd:sequence>
<xsd:element name="chapter" type="ffprobe:chapterType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="chapterType">
<xsd:sequence>
<xsd:element name="tag" type="ffprobe:tagType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type="xsd:int" use="required"/>
<xsd:attribute name="time_base" type="xsd:string" use="required"/>
<xsd:attribute name="start" type="xsd:int" use="required"/>
<xsd:attribute name="start_time" type="xsd:float"/>
<xsd:attribute name="end" type="xsd:int" use="required"/>
<xsd:attribute name="end_time" type="xsd:float" use="required"/>
</xsd:complexType>
<xsd:complexType name="libraryVersionType">
<xsd:attribute name="name" type="xsd:string" use="required"/>
<xsd:attribute name="major" type="xsd:int" use="required"/>
<xsd:attribute name="minor" type="xsd:int" use="required"/>
<xsd:attribute name="micro" type="xsd:int" use="required"/>
<xsd:attribute name="version" type="xsd:int" use="required"/>
<xsd:attribute name="ident" type="xsd:string" use="required"/>
</xsd:complexType>
<xsd:complexType name="libraryVersionsType">
<xsd:sequence>
<xsd:element name="library_version" type="ffprobe:libraryVersionType" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>

/contrib/sdk/sources/ffmpeg/doc/ffserver.conf
0,0 → 1,371
# Port on which the server is listening. You must select a different
# port from your standard HTTP web server if it is running on the same
# computer.
Port 8090
# Address on which the server is bound. Only useful if you have
# several network interfaces.
BindAddress 0.0.0.0
# Number of simultaneous HTTP connections that can be handled. It has
# to be defined *before* the MaxClients parameter, since it defines the
# MaxClients maximum limit.
MaxHTTPConnections 2000
# Number of simultaneous requests that can be handled. Since FFServer
# is very fast, it is more likely that you will want to leave this high
# and use MaxBandwidth, below.
MaxClients 1000
# This the maximum amount of kbit/sec that you are prepared to
# consume when streaming to clients.
MaxBandwidth 1000
# Access log file (uses standard Apache log file format)
# '-' is the standard output.
CustomLog -
##################################################################
# Definition of the live feeds. Each live feed contains one video
# and/or audio sequence coming from an ffmpeg encoder or another
# ffserver. This sequence may be encoded simultaneously with several
# codecs at several resolutions.
<Feed feed1.ffm>
# You must use 'ffmpeg' to send a live feed to ffserver. In this
# example, you can type:
#
# ffmpeg http://localhost:8090/feed1.ffm
# ffserver can also do time shifting. It means that it can stream any
# previously recorded live stream. The request should contain:
# "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify
# a path where the feed is stored on disk. You also specify the
# maximum size of the feed, where zero means unlimited. Default:
# File=/tmp/feed_name.ffm FileMaxSize=5M
File /tmp/feed1.ffm
FileMaxSize 200K
# You could specify
# ReadOnlyFile /saved/specialvideo.ffm
# This marks the file as readonly and it will not be deleted or updated.
# Specify launch in order to start ffmpeg automatically.
# First ffmpeg must be defined with an appropriate path if needed,
# after that options can follow, but avoid adding the http:// field
#Launch ffmpeg
# Only allow connections from localhost to the feed.
ACL allow 127.0.0.1
</Feed>
##################################################################
# Now you can define each stream which will be generated from the
# original audio and video stream. Each format has a filename (here
# 'test1.mpg'). FFServer will send this stream when answering a
# request containing this filename.
<Stream test1.mpg>
# coming from live feed 'feed1'
Feed feed1.ffm
# Format of the stream : you can choose among:
# mpeg : MPEG-1 multiplexed video and audio
# mpegvideo : only MPEG-1 video
# mp2 : MPEG-2 audio (use AudioCodec to select layer 2 and 3 codec)
# ogg : Ogg format (Vorbis audio codec)
# rm : RealNetworks-compatible stream. Multiplexed audio and video.
# ra : RealNetworks-compatible stream. Audio only.
# mpjpeg : Multipart JPEG (works with Netscape without any plugin)
# jpeg : Generate a single JPEG image.
# asf : ASF compatible streaming (Windows Media Player format).
# swf : Macromedia Flash compatible stream
# avi : AVI format (MPEG-4 video, MPEG audio sound)
Format mpeg
# Bitrate for the audio stream. Codecs usually support only a few
# different bitrates.
AudioBitRate 32
# Number of audio channels: 1 = mono, 2 = stereo
AudioChannels 1
# Sampling frequency for audio. When using low bitrates, you should
# lower this frequency to 22050 or 11025. The supported frequencies
# depend on the selected audio codec.
AudioSampleRate 44100
# Bitrate for the video stream
VideoBitRate 64
# Ratecontrol buffer size
VideoBufferSize 40
# Number of frames per second
VideoFrameRate 3
# Size of the video frame: WxH (default: 160x128)
# The following abbreviations are defined: sqcif, qcif, cif, 4cif, qqvga,
# qvga, vga, svga, xga, uxga, qxga, sxga, qsxga, hsxga, wvga, wxga, wsxga,
# wuxga, woxga, wqsxga, wquxga, whsxga, whuxga, cga, ega, hd480, hd720,
# hd1080
VideoSize 160x128
# Transmit only intra frames (useful for low bitrates, but kills frame rate).
#VideoIntraOnly
# If non-intra only, an intra frame is transmitted every VideoGopSize
# frames. Video synchronization can only begin at an intra frame.
VideoGopSize 12
# More MPEG-4 parameters
# VideoHighQuality
# Video4MotionVector
# Choose your codecs:
#AudioCodec mp2
#VideoCodec mpeg1video
# Suppress audio
#NoAudio
# Suppress video
#NoVideo
#VideoQMin 3
#VideoQMax 31
# Set this to the number of seconds backwards in time to start. Note that
# most players will buffer 5-10 seconds of video, and also you need to allow
# for a keyframe to appear in the data stream.
#Preroll 15
# ACL:
# You can allow ranges of addresses (or single addresses)
#ACL ALLOW <first address> <last address>
# You can deny ranges of addresses (or single addresses)
#ACL DENY <first address> <last address>
# You can repeat the ACL allow/deny as often as you like. It is on a per
# stream basis. The first match defines the action. If there are no matches,
# then the default is the inverse of the last ACL statement.
#
# Thus 'ACL allow localhost' only allows access from localhost.
# 'ACL deny 1.0.0.0 1.255.255.255' would deny the whole of network 1 and
# allow everybody else.
</Stream>
##################################################################
# Example streams
# Multipart JPEG
#<Stream test.mjpg>
#Feed feed1.ffm
#Format mpjpeg
#VideoFrameRate 2
#VideoIntraOnly
#NoAudio
#Strict -1
#</Stream>
# Single JPEG
#<Stream test.jpg>
#Feed feed1.ffm
#Format jpeg
#VideoFrameRate 2
#VideoIntraOnly
##VideoSize 352x240
#NoAudio
#Strict -1
#</Stream>
# Flash
#<Stream test.swf>
#Feed feed1.ffm
#Format swf
#VideoFrameRate 2
#VideoIntraOnly
#NoAudio
#</Stream>
# ASF compatible
<Stream test.asf>
Feed feed1.ffm
Format asf
VideoFrameRate 15
VideoSize 352x240
VideoBitRate 256
VideoBufferSize 40
VideoGopSize 30
AudioBitRate 64
StartSendOnKey
</Stream>
# MP3 audio
#<Stream test.mp3>
#Feed feed1.ffm
#Format mp2
#AudioCodec mp3
#AudioBitRate 64
#AudioChannels 1
#AudioSampleRate 44100
#NoVideo
#</Stream>
# Ogg Vorbis audio
#<Stream test.ogg>
#Feed feed1.ffm
#Title "Stream title"
#AudioBitRate 64
#AudioChannels 2
#AudioSampleRate 44100
#NoVideo
#</Stream>
# Real with audio only at 32 kbits
#<Stream test.ra>
#Feed feed1.ffm
#Format rm
#AudioBitRate 32
#NoVideo
#NoAudio
#</Stream>
# Real with audio and video at 64 kbits
#<Stream test.rm>
#Feed feed1.ffm
#Format rm
#AudioBitRate 32
#VideoBitRate 128
#VideoFrameRate 25
#VideoGopSize 25
#NoAudio
#</Stream>
##################################################################
# A stream coming from a file: you only need to set the input
# filename and optionally a new format. Supported conversions:
# AVI -> ASF
#<Stream file.rm>
#File "/usr/local/httpd/htdocs/tlive.rm"
#NoAudio
#</Stream>
#<Stream file.asf>
#File "/usr/local/httpd/htdocs/test.asf"
#NoAudio
#Author "Me"
#Copyright "Super MegaCorp"
#Title "Test stream from disk"
#Comment "Test comment"
#</Stream>
##################################################################
# RTSP examples
#
# You can access this stream with the RTSP URL:
# rtsp://localhost:5454/test1-rtsp.mpg
#
# A non-standard RTSP redirector is also created. Its URL is:
# http://localhost:8090/test1-rtsp.rtsp
#<Stream test1-rtsp.mpg>
#Format rtp
#File "/usr/local/httpd/htdocs/test1.mpg"
#</Stream>
# Transcode an incoming live feed to another live feed,
# using libx264 and video presets
#<Stream live.h264>
#Format rtp
#Feed feed1.ffm
#VideoCodec libx264
#VideoFrameRate 24
#VideoBitRate 100
#VideoSize 480x272
#AVPresetVideo default
#AVPresetVideo baseline
#AVOptionVideo flags +global_header
#
#AudioCodec libfaac
#AudioBitRate 32
#AudioChannels 2
#AudioSampleRate 22050
#AVOptionAudio flags +global_header
#</Stream>
##################################################################
# SDP/multicast examples
#
# If you want to send your stream in multicast, you must set the
# multicast address with MulticastAddress. The port and the TTL can
# also be set.
#
# An SDP file is automatically generated by ffserver by adding the
# 'sdp' extension to the stream name (here
# http://localhost:8090/test1-sdp.sdp). You should usually give this
# file to your player to play the stream.
#
# The 'NoLoop' option can be used to avoid looping when the stream is
# terminated.
#<Stream test1-sdp.mpg>
#Format rtp
#File "/usr/local/httpd/htdocs/test1.mpg"
#MulticastAddress 224.124.0.1
#MulticastPort 5000
#MulticastTTL 16
#NoLoop
#</Stream>
##################################################################
# Special streams
# Server status
<Stream stat.html>
Format status
# Only allow local people to get the status
ACL allow localhost
ACL allow 192.168.0.0 192.168.255.255
#FaviconURL http://pond1.gladstonefamily.net:8080/favicon.ico
</Stream>
# Redirect index.html to the appropriate site
<Redirect index.html>
URL http://www.ffmpeg.org/
</Redirect>

/contrib/sdk/sources/ffmpeg/doc/ffserver.texi
0,0 → 1,320
\input texinfo @c -*- texinfo -*-
@settitle ffserver Documentation
@titlepage
@center @titlefont{ffserver Documentation}
@end titlepage
@top
@contents
@chapter Synopsis
ffserver [@var{options}]
@chapter Description
@c man begin DESCRIPTION
@command{ffserver} is a streaming server for both audio and video. It
supports several live feeds, streaming from files and time shifting on
live feeds (you can seek to positions in the past on each live feed,
provided you specify a big enough feed storage in
@file{ffserver.conf}).
@command{ffserver} receives prerecorded files or FFM streams from some
@command{ffmpeg} instance as input, then streams them over
RTP/RTSP/HTTP.
An @command{ffserver} instance will listen on some port as specified
in the configuration file. You can launch one or more instances of
@command{ffmpeg} and send one or more FFM streams to the port where
ffserver is expecting to receive them. Alternately, you can make
@command{ffserver} launch such @command{ffmpeg} instances at startup.
Input streams are called feeds, and each one is specified by a
@code{<Feed>} section in the configuration file.
For each feed you can have different output streams in various
formats, each one specified by a @code{<Stream>} section in the
configuration file.
@section Status stream
ffserver supports an HTTP interface which exposes the current status
of the server.
Simply point your browser to the address of the special status stream
specified in the configuration file.
For example if you have:
@example
<Stream status.html>
Format status
# Only allow local people to get the status
ACL allow localhost
ACL allow 192.168.0.0 192.168.255.255
</Stream>
@end example
then the server will post a page with the status information when
the special stream @file{status.html} is requested.
@section What can this do?
When properly configured and running, you can capture video and audio in real
time from a suitable capture card, and stream it out over the Internet to
either Windows Media Player or RealAudio player (with some restrictions).
It can also stream from files, though that is currently broken. Very often, a
web server can be used to serve up the files just as well.
It can stream prerecorded video from .ffm files, though it is somewhat tricky
to make it work correctly.
@section How do I make it work?
First, build the kit. It *really* helps to have installed LAME first. Then when
you run the ffserver ./configure, make sure that you have the
@code{--enable-libmp3lame} flag turned on.
LAME is important as it allows for streaming audio to Windows Media Player.
Don't ask why the other audio types do not work.
As a simple test, just run the following two command lines where INPUTFILE
is some file which you can decode with ffmpeg:
@example
ffserver -f doc/ffserver.conf &
ffmpeg -i INPUTFILE http://localhost:8090/feed1.ffm
@end example
At this point you should be able to go to your Windows machine and fire up
Windows Media Player (WMP). Go to Open URL and enter
@example
http://<linuxbox>:8090/test.asf
@end example
You should (after a short delay) see video and hear audio.
WARNING: trying to stream test1.mpg doesn't work with WMP as it tries to
transfer the entire file before starting to play.
The same is true of AVI files.
@section What happens next?
You should edit the ffserver.conf file to suit your needs (in terms of
frame rates etc). Then install ffserver and ffmpeg, write a script to start
them up, and off you go.
@section Troubleshooting
@subsection I don't hear any audio, but video is fine.
Maybe you didn't install LAME, or got your ./configure statement wrong. Check
the ffmpeg output to see if a line referring to MP3 is present. If not, then
your configuration was incorrect. If it is, then maybe your wiring is not
set up correctly. Maybe the sound card is not getting data from the right
input source. Maybe you have a really awful audio interface (like I do)
that only captures in stereo and also requires that one channel be flipped.
If you are one of these people, then export 'AUDIO_FLIP_LEFT=1' before
starting ffmpeg.
@subsection The audio and video lose sync after a while.
Yes, they do.
@subsection After a long while, the video update rate goes way down in WMP.
Yes, it does. Who knows why?
@subsection WMP 6.4 behaves differently to WMP 7.
Yes, it does. Any thoughts on this would be gratefully received. These
differences extend to embedding WMP into a web page. [There are two
object IDs that you can use: The old one, which does not play well, and
the new one, which does (both tested on the same system). However,
I suspect that the new one is not available unless you have installed WMP 7].
@section What else can it do?
You can replay video from .ffm files that was recorded earlier.
However, there are a number of caveats, including the fact that the
ffserver parameters must match the original parameters used to record the
file. If they do not, then ffserver deletes the file before recording into it.
(Now that I write this, it seems broken).
You can fiddle with many of the codec choices and encoding parameters, and
there are a bunch more parameters that you cannot control. Post a message
to the mailing list if there are some 'must have' parameters. Look in
ffserver.conf for a list of the currently available controls.
It will automatically generate the ASX or RAM files that are often used
in browsers. These files are actually redirections to the underlying ASF
or RM file. The reason for this is that the browser often fetches the
entire file before starting up the external viewer. The redirection files
are very small and can be transferred quickly. [The stream itself is
often 'infinite' and thus the browser tries to download it and never
finishes.]
@section Tips
* When you connect to a live stream, most players (WMP, RA, etc) want to
buffer a certain number of seconds of material so that they can display the
signal continuously. However, ffserver (by default) starts sending data
in realtime. This means that there is a pause of a few seconds while the
buffering is being done by the player. The good news is that this can be
cured by adding a '?buffer=5' to the end of the URL. This means that the
stream should start 5 seconds in the past -- and so the first 5 seconds
of the stream are sent as fast as the network will allow. It will then
slow down to real time. This noticeably improves the startup experience.
You can also add a 'Preroll 15' statement into the ffserver.conf that will
add the 15 second prebuffering on all requests that do not otherwise
specify a time. In addition, ffserver will skip frames until a key_frame
is found. This further reduces the startup delay by not transferring data
that will be discarded.
* You may want to adjust the MaxBandwidth in the ffserver.conf to limit
the amount of bandwidth consumed by live streams.
@section Why does the ?buffer / Preroll stop working after a time?
It turns out that (on my machine at least) the number of frames successfully
grabbed is marginally less than the number that ought to be grabbed. This
means that the timestamp in the encoded data stream gets behind realtime.
This means that if you say 'Preroll 10', then when the stream gets 10
or more seconds behind, there is no Preroll left.
Fixing this requires a change in the internals of how timestamps are
handled.
@section Does the @code{?date=} stuff work.
Yes (subject to the limitation outlined above). Also note that whenever you
start ffserver, it deletes the ffm file (if any parameters have changed),
thus wiping out what you had recorded before.
The format of the @code{?date=xxxxxx} is fairly flexible. You should use one
of the following formats (the 'T' is literal):
@example
* YYYY-MM-DDTHH:MM:SS (localtime)
* YYYY-MM-DDTHH:MM:SSZ (UTC)
@end example
You can omit the YYYY-MM-DD, and then it refers to the current day. However
note that @samp{?date=16:00:00} refers to 16:00 on the current day -- this
may be in the future and so is unlikely to be useful.
You use this by adding the ?date= to the end of the URL for the stream.
For example: @samp{http://localhost:8080/test.asf?date=2002-07-26T23:05:00}.
@c man end
@section What is FFM, FFM2
FFM and FFM2 are formats used by ffserver. They allow storing a wide variety of
video and audio streams and encoding options, and can store a moving time segment
of an infinite movie or a whole movie.
FFM is version specific, and there is limited compatibility of FFM files
generated by one version of ffmpeg/ffserver and another version of
ffmpeg/ffserver. It may work but it is not guaranteed to work.
FFM2 is extensible while maintaining compatibility and should work between
differing versions of tools. FFM2 is the default.
@chapter Options
@c man begin OPTIONS
@include fftools-common-opts.texi
@section Main options
@table @option
@item -f @var{configfile}
Use @file{configfile} instead of @file{/etc/ffserver.conf}.
@item -n
Enable no-launch mode. This option disables all the Launch directives
within the various <Stream> sections. Since ffserver will not launch
any ffmpeg instances, you will have to launch them manually.
@item -d
Enable debug mode. This option increases log verbosity, directs log
messages to stdout.
@end table
@c man end
@include config.texi
@ifset config-all
@ifset config-avutil
@include utils.texi
@end ifset
@ifset config-avcodec
@include codecs.texi
@include bitstream_filters.texi
@end ifset
@ifset config-avformat
@include formats.texi
@include protocols.texi
@end ifset
@ifset config-avdevice
@include devices.texi
@end ifset
@ifset config-swresample
@include resampler.texi
@end ifset
@ifset config-swscale
@include scaler.texi
@end ifset
@ifset config-avfilter
@include filters.texi
@end ifset
@end ifset
@chapter See Also
@ifhtml
@ifset config-all
@url{ffserver.html,ffserver},
@end ifset
@ifset config-not-all
@url{ffserver-all.html,ffserver-all},
@end ifset
the @file{doc/ffserver.conf} example,
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe},
@url{ffmpeg-utils.html,ffmpeg-utils},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@url{ffmpeg-codecs.html,ffmpeg-codecs},
@url{ffmpeg-bitstream-filters.html,ffmpeg-bitstream-filters},
@url{ffmpeg-formats.html,ffmpeg-formats},
@url{ffmpeg-devices.html,ffmpeg-devices},
@url{ffmpeg-protocols.html,ffmpeg-protocols},
@url{ffmpeg-filters.html,ffmpeg-filters}
@end ifhtml
@ifnothtml
@ifset config-all
ffserver(1),
@end ifset
@ifset config-not-all
ffserver-all(1),
@end ifset
the @file{doc/ffserver.conf} example, ffmpeg(1), ffplay(1), ffprobe(1),
ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1),
ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1)
@end ifnothtml
@include authors.texi
@ignore
@setfilename ffserver
@settitle ffserver video server
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/fftools-common-opts.texi
0,0 → 1,292
All the numerical options, if not specified otherwise, accept a string
representing a number as input, which may be followed by one of the SI
unit prefixes, for example: 'K', 'M', or 'G'.
If 'i' is appended to the SI unit prefix, the complete prefix will be
interpreted as a unit prefix for binary multiplies, which are based on
powers of 1024 instead of powers of 1000. Appending 'B' to the SI unit
prefix multiplies the value by 8. This allows using, for example:
'KB', 'MiB', 'G' and 'B' as number suffixes.
Options which do not take arguments are boolean options, and set the
corresponding value to true. They can be set to false by prefixing
the option name with "no". For example using "-nofoo"
will set the boolean option with name "foo" to false.
@anchor{Stream specifiers}
@section Stream specifiers
Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers
are used to precisely specify which stream(s) a given option belongs to.
A stream specifier is a string generally appended to the option name and
separated from it by a colon. E.g. @code{-codec:a:1 ac3} contains the
@code{a:1} stream specifier, which matches the second audio stream. Therefore, it
would select the ac3 codec for the second audio stream.
A stream specifier can match several streams, so that the option is applied to all
of them. E.g. the stream specifier in @code{-b:a 128k} matches all audio
streams.
An empty stream specifier matches all streams. For example, @code{-codec copy}
or @code{-codec: copy} would copy all the streams without reencoding.
Possible forms of stream specifiers are:
@table @option
@item @var{stream_index}
Matches the stream with this index. E.g. @code{-threads:1 4} would set the
thread count for the second stream to 4.
@item @var{stream_type}[:@var{stream_index}]
@var{stream_type} is one of following: 'v' for video, 'a' for audio, 's' for subtitle,
'd' for data, and 't' for attachments. If @var{stream_index} is given, then it matches
stream number @var{stream_index} of this type. Otherwise, it matches all
streams of this type.
@item p:@var{program_id}[:@var{stream_index}]
If @var{stream_index} is given, then it matches the stream with number @var{stream_index}
in the program with the id @var{program_id}. Otherwise, it matches all streams in the
program.
@item #@var{stream_id}
Matches the stream by a format-specific ID.
@end table
@section Generic options
These options are shared amongst the ff* tools.
@table @option
@item -L
Show license.
@item -h, -?, -help, --help [@var{arg}]
Show help. An optional parameter may be specified to print help about a specific
item. If no argument is specified, only basic (non advanced) tool
options are shown.
Possible values of @var{arg} are:
@table @option
@item long
Print advanced tool options in addition to the basic tool options.
@item full
Print complete list of options, including shared and private options
for encoders, decoders, demuxers, muxers, filters, etc.
@item decoder=@var{decoder_name}
Print detailed information about the decoder named @var{decoder_name}. Use the
@option{-decoders} option to get a list of all decoders.
@item encoder=@var{encoder_name}
Print detailed information about the encoder named @var{encoder_name}. Use the
@option{-encoders} option to get a list of all encoders.
@item demuxer=@var{demuxer_name}
Print detailed information about the demuxer named @var{demuxer_name}. Use the
@option{-formats} option to get a list of all demuxers and muxers.
@item muxer=@var{muxer_name}
Print detailed information about the muxer named @var{muxer_name}. Use the
@option{-formats} option to get a list of all muxers and demuxers.
@item filter=@var{filter_name}
Print detailed information about the filter name @var{filter_name}. Use the
@option{-filters} option to get a list of all filters.
@end table
@item -version
Show version.
@item -formats
Show available formats.
@item -codecs
Show all codecs known to libavcodec.
Note that the term 'codec' is used throughout this documentation as a shortcut
for what is more correctly called a media bitstream format.
@item -decoders
Show available decoders.
@item -encoders
Show all available encoders.
@item -bsfs
Show available bitstream filters.
@item -protocols
Show available protocols.
@item -filters
Show available libavfilter filters.
@item -pix_fmts
Show available pixel formats.
@item -sample_fmts
Show available sample formats.
@item -layouts
Show channel names and standard channel layouts.
@item -colors
Show recognized color names.
@item -loglevel [repeat+]@var{loglevel} | -v [repeat+]@var{loglevel}
Set the logging level used by the library.
Adding "repeat+" indicates that repeated log output should not be compressed
to the first line and the "Last message repeated n times" line will be
omitted. "repeat" can also be used alone.
If "repeat" is used alone, and with no prior loglevel set, the default
loglevel will be used. If multiple loglevel parameters are given, using
'repeat' will not change the loglevel.
@var{loglevel} is a number or a string containing one of the following values:
@table @samp
@item quiet
Show nothing at all; be silent.
@item panic
Only show fatal errors which could lead the process to crash, such as
and assert failure. This is not currently used for anything.
@item fatal
Only show fatal errors. These are errors after which the process absolutely
cannot continue after.
@item error
Show all errors, including ones which can be recovered from.
@item warning
Show all warnings and errors. Any message related to possibly
incorrect or unexpected events will be shown.
@item info
Show informative messages during processing. This is in addition to
warnings and errors. This is the default value.
@item verbose
Same as @code{info}, except more verbose.
@item debug
Show everything, including debugging information.
@end table
By default the program logs to stderr, if coloring is supported by the
terminal, colors are used to mark errors and warnings. Log coloring
can be disabled setting the environment variable
@env{AV_LOG_FORCE_NOCOLOR} or @env{NO_COLOR}, or can be forced setting
the environment variable @env{AV_LOG_FORCE_COLOR}.
The use of the environment variable @env{NO_COLOR} is deprecated and
will be dropped in a following FFmpeg version.
@item -report
Dump full command line and console output to a file named
@code{@var{program}-@var{YYYYMMDD}-@var{HHMMSS}.log} in the current
directory.
This file can be useful for bug reports.
It also implies @code{-loglevel verbose}.
Setting the environment variable @code{FFREPORT} to any value has the
same effect. If the value is a ':'-separated key=value sequence, these
options will affect the report; options values must be escaped if they
contain special characters or the options delimiter ':' (see the
``Quoting and escaping'' section in the ffmpeg-utils manual). The
following option is recognized:
@table @option
@item file
set the file name to use for the report; @code{%p} is expanded to the name
of the program, @code{%t} is expanded to a timestamp, @code{%%} is expanded
to a plain @code{%}
@end table
Errors in parsing the environment variable are not fatal, and will not
appear in the report.
@item -cpuflags flags (@emph{global})
Allows setting and clearing cpu flags. This option is intended
for testing. Do not use it unless you know what you're doing.
@example
ffmpeg -cpuflags -sse+mmx ...
ffmpeg -cpuflags mmx ...
ffmpeg -cpuflags 0 ...
@end example
Possible flags for this option are:
@table @samp
@item x86
@table @samp
@item mmx
@item mmxext
@item sse
@item sse2
@item sse2slow
@item sse3
@item sse3slow
@item ssse3
@item atom
@item sse4.1
@item sse4.2
@item avx
@item xop
@item fma4
@item 3dnow
@item 3dnowext
@item cmov
@end table
@item ARM
@table @samp
@item armv5te
@item armv6
@item armv6t2
@item vfp
@item vfpv3
@item neon
@end table
@item PowerPC
@table @samp
@item altivec
@end table
@item Specific Processors
@table @samp
@item pentium2
@item pentium3
@item pentium4
@item k6
@item k62
@item athlon
@item athlonxp
@item k8
@end table
@end table
@item -opencl_options options (@emph{global})
Set OpenCL environment options. This option is only available when
FFmpeg has been compiled with @code{--enable-opencl}.
@var{options} must be a list of @var{key}=@var{value} option pairs
separated by ':'. See the ``OpenCL Options'' section in the
ffmpeg-utils manual for the list of supported options.
@end table
@section AVOptions
These options are provided directly by the libavformat, libavdevice and
libavcodec libraries. To see the list of available AVOptions, use the
@option{-help} option. They are separated into two categories:
@table @option
@item generic
These options can be set for any container, codec or device. Generic options
are listed under AVFormatContext options for containers/devices and under
AVCodecContext options for codecs.
@item private
These options are specific to the given container, device or codec. Private
options are listed under their corresponding containers/devices/codecs.
@end table
For example to write an ID3v2.3 header instead of a default ID3v2.4 to
an MP3 file, use the @option{id3v2_version} private option of the MP3
muxer:
@example
ffmpeg -i input.flac -id3v2_version 3 out.mp3
@end example
All codec AVOptions are per-stream, and thus a stream specifier
should be attached to them.
Note: the @option{-nooption} syntax cannot be used for boolean
AVOptions, use @option{-option 0}/@option{-option 1}.
Note: the old undocumented way of specifying per-stream AVOptions by
prepending v/a/s to the options name is now obsolete and will be
removed soon.

/contrib/sdk/sources/ffmpeg/doc/filter_design.txt
0,0 → 1,270
Filter design
=============
This document explains guidelines that should be observed (or ignored with
good reason) when writing filters for libavfilter.
In this document, the word “frame” indicates either a video frame or a group
of audio samples, as stored in an AVFilterBuffer structure.
Format negotiation
==================
The query_formats method should set, for each input and each output links,
the list of supported formats.
For video links, that means pixel format. For audio links, that means
channel layout, sample format (the sample packing is implied by the sample
format) and sample rate.
The lists are not just lists, they are references to shared objects. When
the negotiation mechanism computes the intersection of the formats
supported at each end of a link, all references to both lists are replaced
with a reference to the intersection. And when a single format is
eventually chosen for a link amongst the remaining list, again, all
references to the list are updated.
That means that if a filter requires that its input and output have the
same format amongst a supported list, all it has to do is use a reference
to the same list of formats.
query_formats can leave some formats unset and return AVERROR(EAGAIN) to
cause the negotiation mechanism to try again later. That can be used by
filters with complex requirements to use the format negotiated on one link
to set the formats supported on another.
Buffer references ownership and permissions
===========================================
Principle
---------
Audio and video data are voluminous; the buffer and buffer reference
mechanism is intended to avoid, as much as possible, expensive copies of
that data while still allowing the filters to produce correct results.
The data is stored in buffers represented by AVFilterBuffer structures.
They must not be accessed directly, but through references stored in
AVFilterBufferRef structures. Several references can point to the
same buffer; the buffer is automatically deallocated once all
corresponding references have been destroyed.
The characteristics of the data (resolution, sample rate, etc.) are
stored in the reference; different references for the same buffer can
show different characteristics. In particular, a video reference can
point to only a part of a video buffer.
A reference is usually obtained as input to the start_frame or
filter_frame method or requested using the ff_get_video_buffer or
ff_get_audio_buffer functions. A new reference on an existing buffer can
be created with the avfilter_ref_buffer. A reference is destroyed using
the avfilter_unref_bufferp function.
Reference ownership
-------------------
At any time, a reference “belongs” to a particular piece of code,
usually a filter. With a few caveats that will be explained below, only
that piece of code is allowed to access it. It is also responsible for
destroying it, although this is sometimes done automatically (see the
section on link reference fields).
Here are the (fairly obvious) rules for reference ownership:
* A reference received by the filter_frame method (or its start_frame
deprecated version) belongs to the corresponding filter.
Special exception: for video references: the reference may be used
internally for automatic copying and must not be destroyed before
end_frame; it can be given away to ff_start_frame.
* A reference passed to ff_filter_frame (or the deprecated
ff_start_frame) is given away and must no longer be used.
* A reference created with avfilter_ref_buffer belongs to the code that
created it.
* A reference obtained with ff_get_video_buffer or ff_get_audio_buffer
belongs to the code that requested it.
* A reference given as return value by the get_video_buffer or
get_audio_buffer method is given away and must no longer be used.
Link reference fields
---------------------
The AVFilterLink structure has a few AVFilterBufferRef fields. The
cur_buf and out_buf were used with the deprecated
start_frame/draw_slice/end_frame API and should no longer be used.
src_buf, cur_buf_copy and partial_buf are used by libavfilter internally
and must not be accessed by filters.
Reference permissions
---------------------
The AVFilterBufferRef structure has a perms field that describes what
the code that owns the reference is allowed to do to the buffer data.
Different references for the same buffer can have different permissions.
For video filters that implement the deprecated
start_frame/draw_slice/end_frame API, the permissions only apply to the
parts of the buffer that have already been covered by the draw_slice
method.
The value is a binary OR of the following constants:
* AV_PERM_READ: the owner can read the buffer data; this is essentially
always true and is there for self-documentation.
* AV_PERM_WRITE: the owner can modify the buffer data.
* AV_PERM_PRESERVE: the owner can rely on the fact that the buffer data
will not be modified by previous filters.
* AV_PERM_REUSE: the owner can output the buffer several times, without
modifying the data in between.
* AV_PERM_REUSE2: the owner can output the buffer several times and
modify the data in between (useless without the WRITE permissions).
* AV_PERM_ALIGN: the owner can access the data using fast operations
that require data alignment.
The READ, WRITE and PRESERVE permissions are about sharing the same
buffer between several filters to avoid expensive copies without them
doing conflicting changes on the data.
The REUSE and REUSE2 permissions are about special memory for direct
rendering. For example a buffer directly allocated in video memory must
not modified once it is displayed on screen, or it will cause tearing;
it will therefore not have the REUSE2 permission.
The ALIGN permission is about extracting part of the buffer, for
copy-less padding or cropping for example.
References received on input pads are guaranteed to have all the
permissions stated in the min_perms field and none of the permissions
stated in the rej_perms.
References obtained by ff_get_video_buffer and ff_get_audio_buffer are
guaranteed to have at least all the permissions requested as argument.
References created by avfilter_ref_buffer have the same permissions as
the original reference minus the ones explicitly masked; the mask is
usually ~0 to keep the same permissions.
Filters should remove permissions on reference they give to output
whenever necessary. It can be automatically done by setting the
rej_perms field on the output pad.
Here are a few guidelines corresponding to common situations:
* Filters that modify and forward their frame (like drawtext) need the
WRITE permission.
* Filters that read their input to produce a new frame on output (like
scale) need the READ permission on input and must request a buffer
with the WRITE permission.
* Filters that intend to keep a reference after the filtering process
is finished (after filter_frame returns) must have the PRESERVE
permission on it and remove the WRITE permission if they create a new
reference to give it away.
* Filters that intend to modify a reference they have kept after the end
of the filtering process need the REUSE2 permission and must remove
the PRESERVE permission if they create a new reference to give it
away.
Frame scheduling
================
The purpose of these rules is to ensure that frames flow in the filter
graph without getting stuck and accumulating somewhere.
Simple filters that output one frame for each input frame should not have
to worry about it.
filter_frame
------------
This method is called when a frame is pushed to the filter's input. It
can be called at any time except in a reentrant way.
If the input frame is enough to produce output, then the filter should
push the output frames on the output link immediately.
As an exception to the previous rule, if the input frame is enough to
produce several output frames, then the filter needs output only at
least one per link. The additional frames can be left buffered in the
filter; these buffered frames must be flushed immediately if a new input
produces new output.
(Example: frame rate-doubling filter: filter_frame must (1) flush the
second copy of the previous frame, if it is still there, (2) push the
first copy of the incoming frame, (3) keep the second copy for later.)
If the input frame is not enough to produce output, the filter must not
call request_frame to get more. It must just process the frame or queue
it. The task of requesting more frames is left to the filter's
request_frame method or the application.
If a filter has several inputs, the filter must be ready for frames
arriving randomly on any input. Therefore, any filter with several inputs
will most likely require some kind of queuing mechanism. It is perfectly
acceptable to have a limited queue and to drop frames when the inputs
are too unbalanced.
request_frame
-------------
This method is called when a frame is wanted on an output.
For an input, it should directly call filter_frame on the corresponding
output.
For a filter, if there are queued frames already ready, one of these
frames should be pushed. If not, the filter should request a frame on
one of its inputs, repeatedly until at least one frame has been pushed.
Return values:
if request_frame could produce a frame, it should return 0;
if it could not for temporary reasons, it should return AVERROR(EAGAIN);
if it could not because there are no more frames, it should return
AVERROR_EOF.
The typical implementation of request_frame for a filter with several
inputs will look like that:
if (frames_queued) {
push_one_frame();
return 0;
}
while (!frame_pushed) {
input = input_where_a_frame_is_most_needed();
ret = ff_request_frame(input);
if (ret == AVERROR_EOF) {
process_eof_on_input();
} else if (ret < 0) {
return ret;
}
}
return 0;
Note that, except for filters that can have queued frames, request_frame
does not push frames: it requests them to its input, and as a reaction,
the filter_frame method will be called and do the work.
Legacy API
==========
Until libavfilter 3.23, the filter_frame method was split:
- for video filters, it was made of start_frame, draw_slice (that could be
called several times on distinct parts of the frame) and end_frame;
- for audio filters, it was called filter_samples.

/contrib/sdk/sources/ffmpeg/doc/filters.texi
0,0 → 1,9978
@chapter Filtering Introduction
@c man begin FILTERING INTRODUCTION
Filtering in FFmpeg is enabled through the libavfilter library.
In libavfilter, a filter can have multiple inputs and multiple
outputs.
To illustrate the sorts of things that are possible, we consider the
following filtergraph.
@example
[main]
input --> split ---------------------> overlay --> output
| ^
|[tmp] [flip]|
+-----> crop --> vflip -------+
@end example
This filtergraph splits the input stream in two streams, sends one
stream through the crop filter and the vflip filter before merging it
back with the other stream by overlaying it on top. You can use the
following command to achieve this:
@example
ffmpeg -i INPUT -vf "split [main][tmp]; [tmp] crop=iw:ih/2:0:0, vflip [flip]; [main][flip] overlay=0:H/2" OUTPUT
@end example
The result will be that in output the top half of the video is mirrored
onto the bottom half.
Filters in the same linear chain are separated by commas, and distinct
linear chains of filters are separated by semicolons. In our example,
@var{crop,vflip} are in one linear chain, @var{split} and
@var{overlay} are separately in another. The points where the linear
chains join are labelled by names enclosed in square brackets. In the
example, the split filter generates two outputs that are associated to
the labels @var{[main]} and @var{[tmp]}.
The stream sent to the second output of @var{split}, labelled as
@var{[tmp]}, is processed through the @var{crop} filter, which crops
away the lower half part of the video, and then vertically flipped. The
@var{overlay} filter takes in input the first unchanged output of the
split filter (which was labelled as @var{[main]}), and overlay on its
lower half the output generated by the @var{crop,vflip} filterchain.
Some filters take in input a list of parameters: they are specified
after the filter name and an equal sign, and are separated from each other
by a colon.
There exist so-called @var{source filters} that do not have an
audio/video input, and @var{sink filters} that will not have audio/video
output.
@c man end FILTERING INTRODUCTION
@chapter graph2dot
@c man begin GRAPH2DOT
The @file{graph2dot} program included in the FFmpeg @file{tools}
directory can be used to parse a filtergraph description and issue a
corresponding textual representation in the dot language.
Invoke the command:
@example
graph2dot -h
@end example
to see how to use @file{graph2dot}.
You can then pass the dot description to the @file{dot} program (from
the graphviz suite of programs) and obtain a graphical representation
of the filtergraph.
For example the sequence of commands:
@example
echo @var{GRAPH_DESCRIPTION} | \
tools/graph2dot -o graph.tmp && \
dot -Tpng graph.tmp -o graph.png && \
display graph.png
@end example
can be used to create and display an image representing the graph
described by the @var{GRAPH_DESCRIPTION} string. Note that this string must be
a complete self-contained graph, with its inputs and outputs explicitly defined.
For example if your command line is of the form:
@example
ffmpeg -i infile -vf scale=640:360 outfile
@end example
your @var{GRAPH_DESCRIPTION} string will need to be of the form:
@example
nullsrc,scale=640:360,nullsink
@end example
you may also need to set the @var{nullsrc} parameters and add a @var{format}
filter in order to simulate a specific input file.
@c man end GRAPH2DOT
@chapter Filtergraph description
@c man begin FILTERGRAPH DESCRIPTION
A filtergraph is a directed graph of connected filters. It can contain
cycles, and there can be multiple links between a pair of
filters. Each link has one input pad on one side connecting it to one
filter from which it takes its input, and one output pad on the other
side connecting it to the one filter accepting its output.
Each filter in a filtergraph is an instance of a filter class
registered in the application, which defines the features and the
number of input and output pads of the filter.
A filter with no input pads is called a "source", a filter with no
output pads is called a "sink".
@anchor{Filtergraph syntax}
@section Filtergraph syntax
A filtergraph can be represented using a textual representation, which is
recognized by the @option{-filter}/@option{-vf} and @option{-filter_complex}
options in @command{ffmpeg} and @option{-vf} in @command{ffplay}, and by the
@code{avfilter_graph_parse()}/@code{avfilter_graph_parse2()} function defined in
@file{libavfilter/avfilter.h}.
A filterchain consists of a sequence of connected filters, each one
connected to the previous one in the sequence. A filterchain is
represented by a list of ","-separated filter descriptions.
A filtergraph consists of a sequence of filterchains. A sequence of
filterchains is represented by a list of ";"-separated filterchain
descriptions.
A filter is represented by a string of the form:
[@var{in_link_1}]...[@var{in_link_N}]@var{filter_name}=@var{arguments}[@var{out_link_1}]...[@var{out_link_M}]
@var{filter_name} is the name of the filter class of which the
described filter is an instance of, and has to be the name of one of
the filter classes registered in the program.
The name of the filter class is optionally followed by a string
"=@var{arguments}".
@var{arguments} is a string which contains the parameters used to
initialize the filter instance. It may have one of the following forms:
@itemize
@item
A ':'-separated list of @var{key=value} pairs.
@item
A ':'-separated list of @var{value}. In this case, the keys are assumed to be
the option names in the order they are declared. E.g. the @code{fade} filter
declares three options in this order -- @option{type}, @option{start_frame} and
@option{nb_frames}. Then the parameter list @var{in:0:30} means that the value
@var{in} is assigned to the option @option{type}, @var{0} to
@option{start_frame} and @var{30} to @option{nb_frames}.
@item
A ':'-separated list of mixed direct @var{value} and long @var{key=value}
pairs. The direct @var{value} must precede the @var{key=value} pairs, and
follow the same constraints order of the previous point. The following
@var{key=value} pairs can be set in any preferred order.
@end itemize
If the option value itself is a list of items (e.g. the @code{format} filter
takes a list of pixel formats), the items in the list are usually separated by
'|'.
The list of arguments can be quoted using the character "'" as initial
and ending mark, and the character '\' for escaping the characters
within the quoted text; otherwise the argument string is considered
terminated when the next special character (belonging to the set
"[]=;,") is encountered.
The name and arguments of the filter are optionally preceded and
followed by a list of link labels.
A link label allows to name a link and associate it to a filter output
or input pad. The preceding labels @var{in_link_1}
... @var{in_link_N}, are associated to the filter input pads,
the following labels @var{out_link_1} ... @var{out_link_M}, are
associated to the output pads.
When two link labels with the same name are found in the
filtergraph, a link between the corresponding input and output pad is
created.
If an output pad is not labelled, it is linked by default to the first
unlabelled input pad of the next filter in the filterchain.
For example in the filterchain:
@example
nullsrc, split[L1], [L2]overlay, nullsink
@end example
the split filter instance has two output pads, and the overlay filter
instance two input pads. The first output pad of split is labelled
"L1", the first input pad of overlay is labelled "L2", and the second
output pad of split is linked to the second input pad of overlay,
which are both unlabelled.
In a complete filterchain all the unlabelled filter input and output
pads must be connected. A filtergraph is considered valid if all the
filter input and output pads of all the filterchains are connected.
Libavfilter will automatically insert scale filters where format
conversion is required. It is possible to specify swscale flags
for those automatically inserted scalers by prepending
@code{sws_flags=@var{flags};}
to the filtergraph description.
Follows a BNF description for the filtergraph syntax:
@example
@var{NAME} ::= sequence of alphanumeric characters and '_'
@var{LINKLABEL} ::= "[" @var{NAME} "]"
@var{LINKLABELS} ::= @var{LINKLABEL} [@var{LINKLABELS}]
@var{FILTER_ARGUMENTS} ::= sequence of chars (eventually quoted)
@var{FILTER} ::= [@var{LINKLABELS}] @var{NAME} ["=" @var{FILTER_ARGUMENTS}] [@var{LINKLABELS}]
@var{FILTERCHAIN} ::= @var{FILTER} [,@var{FILTERCHAIN}]
@var{FILTERGRAPH} ::= [sws_flags=@var{flags};] @var{FILTERCHAIN} [;@var{FILTERGRAPH}]
@end example
@section Notes on filtergraph escaping
Some filter arguments require the use of special characters, typically
@code{:} to separate key=value pairs in a named options list. In this
case the user should perform a first level escaping when specifying
the filter arguments. For example, consider the following literal
string to be embedded in the @ref{drawtext} filter arguments:
@example
this is a 'string': may contain one, or more, special characters
@end example
Since @code{:} is special for the filter arguments syntax, it needs to
be escaped, so you get:
@example
text=this is a \'string\'\: may contain one, or more, special characters
@end example
A second level of escaping is required when embedding the filter
arguments in a filtergraph description, in order to escape all the
filtergraph special characters. Thus the example above becomes:
@example
drawtext=text=this is a \\\'string\\\'\\: may contain one\, or more\, special characters
@end example
Finally an additional level of escaping may be needed when writing the
filtergraph description in a shell command, which depends on the
escaping rules of the adopted shell. For example, assuming that
@code{\} is special and needs to be escaped with another @code{\}, the
previous string will finally result in:
@example
-vf "drawtext=text=this is a \\\\\\'string\\\\\\'\\\\: may contain one\\, or more\\, special characters"
@end example
Sometimes, it might be more convenient to employ quoting in place of
escaping. For example the string:
@example
Caesar: tu quoque, Brute, fili mi
@end example
Can be quoted in the filter arguments as:
@example
text='Caesar: tu quoque, Brute, fili mi'
@end example
And finally inserted in a filtergraph like:
@example
drawtext=text=\'Caesar: tu quoque\, Brute\, fili mi\'
@end example
See the ``Quoting and escaping'' section in the ffmpeg-utils manual
for more information about the escaping and quoting rules adopted by
FFmpeg.
@chapter Timeline editing
Some filters support a generic @option{enable} option. For the filters
supporting timeline editing, this option can be set to an expression which is
evaluated before sending a frame to the filter. If the evaluation is non-zero,
the filter will be enabled, otherwise the frame will be sent unchanged to the
next filter in the filtergraph.
The expression accepts the following values:
@table @samp
@item t
timestamp expressed in seconds, NAN if the input timestamp is unknown
@item n
sequential number of the input frame, starting from 0
@item pos
the position in the file of the input frame, NAN if unknown
@end table
Additionally, these filters support an @option{enable} command that can be used
to re-define the expression.
Like any other filtering option, the @option{enable} option follows the same
rules.
For example, to enable a blur filter (@ref{smartblur}) from 10 seconds to 3
minutes, and a @ref{curves} filter starting at 3 seconds:
@example
smartblur = enable='between(t,10,3*60)',
curves = enable='gte(t,3)' : preset=cross_process
@end example
@c man end FILTERGRAPH DESCRIPTION
@chapter Audio Filters
@c man begin AUDIO FILTERS
When you configure your FFmpeg build, you can disable any of the
existing filters using @code{--disable-filters}.
The configure output will show the audio filters included in your
build.
Below is a description of the currently available audio filters.
@section aconvert
Convert the input audio format to the specified formats.
@emph{This filter is deprecated. Use @ref{aformat} instead.}
The filter accepts a string of the form:
"@var{sample_format}:@var{channel_layout}".
@var{sample_format} specifies the sample format, and can be a string or the
corresponding numeric value defined in @file{libavutil/samplefmt.h}. Use 'p'
suffix for a planar sample format.
@var{channel_layout} specifies the channel layout, and can be a string
or the corresponding number value defined in @file{libavutil/channel_layout.h}.
The special parameter "auto", signifies that the filter will
automatically select the output format depending on the output filter.
@subsection Examples
@itemize
@item
Convert input to float, planar, stereo:
@example
aconvert=fltp:stereo
@end example
@item
Convert input to unsigned 8-bit, automatically select out channel layout:
@example
aconvert=u8:auto
@end example
@end itemize
@section adelay
Delay one or more audio channels.
Samples in delayed channel are filled with silence.
The filter accepts the following option:
@table @option
@item delays
Set list of delays in milliseconds for each channel separated by '|'.
At least one delay greater than 0 should be provided.
Unused delays will be silently ignored. If number of given delays is
smaller than number of channels all remaining channels will not be delayed.
@end table
@subsection Examples
@itemize
@item
Delay first channel by 1.5 seconds, the third channel by 0.5 seconds and leave
the second channel (and any other channels that may be present) unchanged.
@example
adelay=1500:0:500
@end example
@end itemize
@section aecho
Apply echoing to the input audio.
Echoes are reflected sound and can occur naturally amongst mountains
(and sometimes large buildings) when talking or shouting; digital echo
effects emulate this behaviour and are often used to help fill out the
sound of a single instrument or vocal. The time difference between the
original signal and the reflection is the @code{delay}, and the
loudness of the reflected signal is the @code{decay}.
Multiple echoes can have different delays and decays.
A description of the accepted parameters follows.
@table @option
@item in_gain
Set input gain of reflected signal. Default is @code{0.6}.
@item out_gain
Set output gain of reflected signal. Default is @code{0.3}.
@item delays
Set list of time intervals in milliseconds between original signal and reflections
separated by '|'. Allowed range for each @code{delay} is @code{(0 - 90000.0]}.
Default is @code{1000}.
@item decays
Set list of loudnesses of reflected signals separated by '|'.
Allowed range for each @code{decay} is @code{(0 - 1.0]}.
Default is @code{0.5}.
@end table
@subsection Examples
@itemize
@item
Make it sound as if there are twice as many instruments as are actually playing:
@example
aecho=0.8:0.88:60:0.4
@end example
@item
If delay is very short, then it sound like a (metallic) robot playing music:
@example
aecho=0.8:0.88:6:0.4
@end example
@item
A longer delay will sound like an open air concert in the mountains:
@example
aecho=0.8:0.9:1000:0.3
@end example
@item
Same as above but with one more mountain:
@example
aecho=0.8:0.9:1000|1800:0.3|0.25
@end example
@end itemize
@section afade
Apply fade-in/out effect to input audio.
A description of the accepted parameters follows.
@table @option
@item type, t
Specify the effect type, can be either @code{in} for fade-in, or
@code{out} for a fade-out effect. Default is @code{in}.
@item start_sample, ss
Specify the number of the start sample for starting to apply the fade
effect. Default is 0.
@item nb_samples, ns
Specify the number of samples for which the fade effect has to last. At
the end of the fade-in effect the output audio will have the same
volume as the input audio, at the end of the fade-out transition
the output audio will be silence. Default is 44100.
@item start_time, st
Specify time for starting to apply the fade effect. Default is 0.
The accepted syntax is:
@example
[-]HH[:MM[:SS[.m...]]]
[-]S+[.m...]
@end example
See also the function @code{av_parse_time()}.
If set this option is used instead of @var{start_sample} one.
@item duration, d
Specify the duration for which the fade effect has to last. Default is 0.
The accepted syntax is:
@example
[-]HH[:MM[:SS[.m...]]]
[-]S+[.m...]
@end example
See also the function @code{av_parse_time()}.
At the end of the fade-in effect the output audio will have the same
volume as the input audio, at the end of the fade-out transition
the output audio will be silence.
If set this option is used instead of @var{nb_samples} one.
@item curve
Set curve for fade transition.
It accepts the following values:
@table @option
@item tri
select triangular, linear slope (default)
@item qsin
select quarter of sine wave
@item hsin
select half of sine wave
@item esin
select exponential sine wave
@item log
select logarithmic
@item par
select inverted parabola
@item qua
select quadratic
@item cub
select cubic
@item squ
select square root
@item cbr
select cubic root
@end table
@end table
@subsection Examples
@itemize
@item
Fade in first 15 seconds of audio:
@example
afade=t=in:ss=0:d=15
@end example
@item
Fade out last 25 seconds of a 900 seconds audio:
@example
afade=t=out:st=875:d=25
@end example
@end itemize
@anchor{aformat}
@section aformat
Set output format constraints for the input audio. The framework will
negotiate the most appropriate format to minimize conversions.
The filter accepts the following named parameters:
@table @option
@item sample_fmts
A '|'-separated list of requested sample formats.
@item sample_rates
A '|'-separated list of requested sample rates.
@item channel_layouts
A '|'-separated list of requested channel layouts.
See @ref{channel layout syntax,,the Channel Layout section in the ffmpeg-utils(1) manual,ffmpeg-utils}
for the required syntax.
@end table
If a parameter is omitted, all values are allowed.
For example to force the output to either unsigned 8-bit or signed 16-bit stereo:
@example
aformat=sample_fmts=u8|s16:channel_layouts=stereo
@end example
@section allpass
Apply a two-pole all-pass filter with central frequency (in Hz)
@var{frequency}, and filter-width @var{width}.
An all-pass filter changes the audio's frequency to phase relationship
without changing its frequency to amplitude relationship.
The filter accepts the following options:
@table @option
@item frequency, f
Set frequency in Hz.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
@end table
@section amerge
Merge two or more audio streams into a single multi-channel stream.
The filter accepts the following options:
@table @option
@item inputs
Set the number of inputs. Default is 2.
@end table
If the channel layouts of the inputs are disjoint, and therefore compatible,
the channel layout of the output will be set accordingly and the channels
will be reordered as necessary. If the channel layouts of the inputs are not
disjoint, the output will have all the channels of the first input then all
the channels of the second input, in that order, and the channel layout of
the output will be the default value corresponding to the total number of
channels.
For example, if the first input is in 2.1 (FL+FR+LF) and the second input
is FC+BL+BR, then the output will be in 5.1, with the channels in the
following order: a1, a2, b1, a3, b2, b3 (a1 is the first channel of the
first input, b1 is the first channel of the second input).
On the other hand, if both input are in stereo, the output channels will be
in the default order: a1, a2, b1, b2, and the channel layout will be
arbitrarily set to 4.0, which may or may not be the expected value.
All inputs must have the same sample rate, and format.
If inputs do not have the same duration, the output will stop with the
shortest.
@subsection Examples
@itemize
@item
Merge two mono files into a stereo stream:
@example
amovie=left.wav [l] ; amovie=right.mp3 [r] ; [l] [r] amerge
@end example
@item
Multiple merges assuming 1 video stream and 6 audio streams in @file{input.mkv}:
@example
ffmpeg -i input.mkv -filter_complex "[0:1][0:2][0:3][0:4][0:5][0:6] amerge=inputs=6" -c:a pcm_s16le output.mkv
@end example
@end itemize
@section amix
Mixes multiple audio inputs into a single output.
For example
@example
ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex amix=inputs=3:duration=first:dropout_transition=3 OUTPUT
@end example
will mix 3 input audio streams to a single output with the same duration as the
first input and a dropout transition time of 3 seconds.
The filter accepts the following named parameters:
@table @option
@item inputs
Number of inputs. If unspecified, it defaults to 2.
@item duration
How to determine the end-of-stream.
@table @option
@item longest
Duration of longest input. (default)
@item shortest
Duration of shortest input.
@item first
Duration of first input.
@end table
@item dropout_transition
Transition time, in seconds, for volume renormalization when an input
stream ends. The default value is 2 seconds.
@end table
@section anull
Pass the audio source unchanged to the output.
@section apad
Pad the end of a audio stream with silence, this can be used together with
-shortest to extend audio streams to the same length as the video stream.
@section aphaser
Add a phasing effect to the input audio.
A phaser filter creates series of peaks and troughs in the frequency spectrum.
The position of the peaks and troughs are modulated so that they vary over time, creating a sweeping effect.
A description of the accepted parameters follows.
@table @option
@item in_gain
Set input gain. Default is 0.4.
@item out_gain
Set output gain. Default is 0.74
@item delay
Set delay in milliseconds. Default is 3.0.
@item decay
Set decay. Default is 0.4.
@item speed
Set modulation speed in Hz. Default is 0.5.
@item type
Set modulation type. Default is triangular.
It accepts the following values:
@table @samp
@item triangular, t
@item sinusoidal, s
@end table
@end table
@anchor{aresample}
@section aresample
Resample the input audio to the specified parameters, using the
libswresample library. If none are specified then the filter will
automatically convert between its input and output.
This filter is also able to stretch/squeeze the audio data to make it match
the timestamps or to inject silence / cut out audio to make it match the
timestamps, do a combination of both or do neither.
The filter accepts the syntax
[@var{sample_rate}:]@var{resampler_options}, where @var{sample_rate}
expresses a sample rate and @var{resampler_options} is a list of
@var{key}=@var{value} pairs, separated by ":". See the
ffmpeg-resampler manual for the complete list of supported options.
@subsection Examples
@itemize
@item
Resample the input audio to 44100Hz:
@example
aresample=44100
@end example
@item
Stretch/squeeze samples to the given timestamps, with a maximum of 1000
samples per second compensation:
@example
aresample=async=1000
@end example
@end itemize
@section asetnsamples
Set the number of samples per each output audio frame.
The last output packet may contain a different number of samples, as
the filter will flush all the remaining samples when the input audio
signal its end.
The filter accepts the following options:
@table @option
@item nb_out_samples, n
Set the number of frames per each output audio frame. The number is
intended as the number of samples @emph{per each channel}.
Default value is 1024.
@item pad, p
If set to 1, the filter will pad the last audio frame with zeroes, so
that the last frame will contain the same number of samples as the
previous ones. Default value is 1.
@end table
For example, to set the number of per-frame samples to 1234 and
disable padding for the last frame, use:
@example
asetnsamples=n=1234:p=0
@end example
@section asetrate
Set the sample rate without altering the PCM data.
This will result in a change of speed and pitch.
The filter accepts the following options:
@table @option
@item sample_rate, r
Set the output sample rate. Default is 44100 Hz.
@end table
@section ashowinfo
Show a line containing various information for each input audio frame.
The input audio is not modified.
The shown line contains a sequence of key/value pairs of the form
@var{key}:@var{value}.
A description of each shown parameter follows:
@table @option
@item n
sequential number of the input frame, starting from 0
@item pts
Presentation timestamp of the input frame, in time base units; the time base
depends on the filter input pad, and is usually 1/@var{sample_rate}.
@item pts_time
presentation timestamp of the input frame in seconds
@item pos
position of the frame in the input stream, -1 if this information in
unavailable and/or meaningless (for example in case of synthetic audio)
@item fmt
sample format
@item chlayout
channel layout
@item rate
sample rate for the audio frame
@item nb_samples
number of samples (per channel) in the frame
@item checksum
Adler-32 checksum (printed in hexadecimal) of the audio data. For planar audio
the data is treated as if all the planes were concatenated.
@item plane_checksums
A list of Adler-32 checksums for each data plane.
@end table
@section astats
Display time domain statistical information about the audio channels.
Statistics are calculated and displayed for each audio channel and,
where applicable, an overall figure is also given.
The filter accepts the following option:
@table @option
@item length
Short window length in seconds, used for peak and trough RMS measurement.
Default is @code{0.05} (50 miliseconds). Allowed range is @code{[0.1 - 10]}.
@end table
A description of each shown parameter follows:
@table @option
@item DC offset
Mean amplitude displacement from zero.
@item Min level
Minimal sample level.
@item Max level
Maximal sample level.
@item Peak level dB
@item RMS level dB
Standard peak and RMS level measured in dBFS.
@item RMS peak dB
@item RMS trough dB
Peak and trough values for RMS level measured over a short window.
@item Crest factor
Standard ratio of peak to RMS level (note: not in dB).
@item Flat factor
Flatness (i.e. consecutive samples with the same value) of the signal at its peak levels
(i.e. either @var{Min level} or @var{Max level}).
@item Peak count
Number of occasions (not the number of samples) that the signal attained either
@var{Min level} or @var{Max level}.
@end table
@section astreamsync
Forward two audio streams and control the order the buffers are forwarded.
The filter accepts the following options:
@table @option
@item expr, e
Set the expression deciding which stream should be
forwarded next: if the result is negative, the first stream is forwarded; if
the result is positive or zero, the second stream is forwarded. It can use
the following variables:
@table @var
@item b1 b2
number of buffers forwarded so far on each stream
@item s1 s2
number of samples forwarded so far on each stream
@item t1 t2
current timestamp of each stream
@end table
The default value is @code{t1-t2}, which means to always forward the stream
that has a smaller timestamp.
@end table
@subsection Examples
Stress-test @code{amerge} by randomly sending buffers on the wrong
input, while avoiding too much of a desynchronization:
@example
amovie=file.ogg [a] ; amovie=file.mp3 [b] ;
[a] [b] astreamsync=(2*random(1))-1+tanh(5*(t1-t2)) [a2] [b2] ;
[a2] [b2] amerge
@end example
@section asyncts
Synchronize audio data with timestamps by squeezing/stretching it and/or
dropping samples/adding silence when needed.
This filter is not built by default, please use @ref{aresample} to do squeezing/stretching.
The filter accepts the following named parameters:
@table @option
@item compensate
Enable stretching/squeezing the data to make it match the timestamps. Disabled
by default. When disabled, time gaps are covered with silence.
@item min_delta
Minimum difference between timestamps and audio data (in seconds) to trigger
adding/dropping samples. Default value is 0.1. If you get non-perfect sync with
this filter, try setting this parameter to 0.
@item max_comp
Maximum compensation in samples per second. Relevant only with compensate=1.
Default value 500.
@item first_pts
Assume the first pts should be this value. The time base is 1 / sample rate.
This allows for padding/trimming at the start of stream. By default, no
assumption is made about the first frame's expected pts, so no padding or
trimming is done. For example, this could be set to 0 to pad the beginning with
silence if an audio stream starts after the video stream or to trim any samples
with a negative pts due to encoder delay.
@end table
@section atempo
Adjust audio tempo.
The filter accepts exactly one parameter, the audio tempo. If not
specified then the filter will assume nominal 1.0 tempo. Tempo must
be in the [0.5, 2.0] range.
@subsection Examples
@itemize
@item
Slow down audio to 80% tempo:
@example
atempo=0.8
@end example
@item
To speed up audio to 125% tempo:
@example
atempo=1.25
@end example
@end itemize
@section atrim
Trim the input so that the output contains one continuous subpart of the input.
This filter accepts the following options:
@table @option
@item start
Specify time of the start of the kept section, i.e. the audio sample
with the timestamp @var{start} will be the first sample in the output.
@item end
Specify time of the first audio sample that will be dropped, i.e. the
audio sample immediately preceding the one with the timestamp @var{end} will be
the last sample in the output.
@item start_pts
Same as @var{start}, except this option sets the start timestamp in samples
instead of seconds.
@item end_pts
Same as @var{end}, except this option sets the end timestamp in samples instead
of seconds.
@item duration
Specify maximum duration of the output.
@item start_sample
Number of the first sample that should be passed to output.
@item end_sample
Number of the first sample that should be dropped.
@end table
@option{start}, @option{end}, @option{duration} are expressed as time
duration specifications, check the "Time duration" section in the
ffmpeg-utils manual.
Note that the first two sets of the start/end options and the @option{duration}
option look at the frame timestamp, while the _sample options simply count the
samples that pass through the filter. So start/end_pts and start/end_sample will
give different results when the timestamps are wrong, inexact or do not start at
zero. Also note that this filter does not modify the timestamps. If you wish
that the output timestamps start at zero, insert the asetpts filter after the
atrim filter.
If multiple start or end options are set, this filter tries to be greedy and
keep all samples that match at least one of the specified constraints. To keep
only the part that matches all the constraints at once, chain multiple atrim
filters.
The defaults are such that all the input is kept. So it is possible to set e.g.
just the end values to keep everything before the specified time.
Examples:
@itemize
@item
drop everything except the second minute of input
@example
ffmpeg -i INPUT -af atrim=60:120
@end example
@item
keep only the first 1000 samples
@example
ffmpeg -i INPUT -af atrim=end_sample=1000
@end example
@end itemize
@section bandpass
Apply a two-pole Butterworth band-pass filter with central
frequency @var{frequency}, and (3dB-point) band-width width.
The @var{csg} option selects a constant skirt gain (peak gain = Q)
instead of the default: constant 0dB peak gain.
The filter roll off at 6dB per octave (20dB per decade).
The filter accepts the following options:
@table @option
@item frequency, f
Set the filter's central frequency. Default is @code{3000}.
@item csg
Constant skirt gain if set to 1. Defaults to 0.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
@end table
@section bandreject
Apply a two-pole Butterworth band-reject filter with central
frequency @var{frequency}, and (3dB-point) band-width @var{width}.
The filter roll off at 6dB per octave (20dB per decade).
The filter accepts the following options:
@table @option
@item frequency, f
Set the filter's central frequency. Default is @code{3000}.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
@end table
@section bass
Boost or cut the bass (lower) frequencies of the audio using a two-pole
shelving filter with a response similar to that of a standard
hi-fi's tone-controls. This is also known as shelving equalisation (EQ).
The filter accepts the following options:
@table @option
@item gain, g
Give the gain at 0 Hz. Its useful range is about -20
(for a large cut) to +20 (for a large boost).
Beware of clipping when using a positive gain.
@item frequency, f
Set the filter's central frequency and so can be used
to extend or reduce the frequency range to be boosted or cut.
The default value is @code{100} Hz.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Determine how steep is the filter's shelf transition.
@end table
@section biquad
Apply a biquad IIR filter with the given coefficients.
Where @var{b0}, @var{b1}, @var{b2} and @var{a0}, @var{a1}, @var{a2}
are the numerator and denominator coefficients respectively.
@section channelmap
Remap input channels to new locations.
This filter accepts the following named parameters:
@table @option
@item channel_layout
Channel layout of the output stream.
@item map
Map channels from input to output. The argument is a '|'-separated list of
mappings, each in the @code{@var{in_channel}-@var{out_channel}} or
@var{in_channel} form. @var{in_channel} can be either the name of the input
channel (e.g. FL for front left) or its index in the input channel layout.
@var{out_channel} is the name of the output channel or its index in the output
channel layout. If @var{out_channel} is not given then it is implicitly an
index, starting with zero and increasing by one for each mapping.
@end table
If no mapping is present, the filter will implicitly map input channels to
output channels preserving index.
For example, assuming a 5.1+downmix input MOV file
@example
ffmpeg -i in.mov -filter 'channelmap=map=DL-FL|DR-FR' out.wav
@end example
will create an output WAV file tagged as stereo from the downmix channels of
the input.
To fix a 5.1 WAV improperly encoded in AAC's native channel order
@example
ffmpeg -i in.wav -filter 'channelmap=1|2|0|5|3|4:channel_layout=5.1' out.wav
@end example
@section channelsplit
Split each channel in input audio stream into a separate output stream.
This filter accepts the following named parameters:
@table @option
@item channel_layout
Channel layout of the input stream. Default is "stereo".
@end table
For example, assuming a stereo input MP3 file
@example
ffmpeg -i in.mp3 -filter_complex channelsplit out.mkv
@end example
will create an output Matroska file with two audio streams, one containing only
the left channel and the other the right channel.
To split a 5.1 WAV file into per-channel files
@example
ffmpeg -i in.wav -filter_complex
'channelsplit=channel_layout=5.1[FL][FR][FC][LFE][SL][SR]'
-map '[FL]' front_left.wav -map '[FR]' front_right.wav -map '[FC]'
front_center.wav -map '[LFE]' lfe.wav -map '[SL]' side_left.wav -map '[SR]'
side_right.wav
@end example
@section compand
Compress or expand audio dynamic range.
A description of the accepted options follows.
@table @option
@item attacks
@item decays
Set list of times in seconds for each channel over which the instantaneous
level of the input signal is averaged to determine its volume.
@option{attacks} refers to increase of volume and @option{decays} refers
to decrease of volume.
For most situations, the attack time (response to the audio getting louder)
should be shorter than the decay time because the human ear is more sensitive
to sudden loud audio than sudden soft audio.
Typical value for attack is @code{0.3} seconds and for decay @code{0.8}
seconds.
@item points
Set list of points for transfer function, specified in dB relative to maximum
possible signal amplitude.
Each key points list need to be defined using the following syntax:
@code{x0/y0 x1/y1 x2/y2 ...}.
The input values must be in strictly increasing order but the transfer
function does not have to be monotonically rising.
The point @code{0/0} is assumed but may be overridden (by @code{0/out-dBn}).
Typical values for the transfer function are @code{-70/-70 -60/-20}.
@item soft-knee
Set amount for which the points at where adjacent line segments on the
transfer function meet will be rounded. Defaults is @code{0.01}.
@item gain
Set additional gain in dB to be applied at all points on the transfer function
and allows easy adjustment of the overall gain.
Default is @code{0}.
@item volume
Set initial volume in dB to be assumed for each channel when filtering starts.
This permits the user to supply a nominal level initially, so that,
for example, a very large gain is not applied to initial signal levels before
the companding has begun to operate. A typical value for audio which is
initially quiet is -90 dB. Default is @code{0}.
@item delay
Set delay in seconds. Default is @code{0}. The input audio
is analysed immediately, but audio is delayed before being fed to the
volume adjuster. Specifying a delay approximately equal to the attack/decay
times allows the filter to effectively operate in predictive rather than
reactive mode.
@end table
@subsection Examples
@itemize
@item
Make music with both quiet and loud passages suitable for listening
in a noisy environment:
@example
compand=.3 .3:1 1:-90/-60 -60/-40 -40/-30 -20/-20:6:0:-90:0.2
@end example
@item
Noise-gate for when the noise is at a lower level than the signal:
@example
compand=.1 .1:.2 .2:-900/-900 -50.1/-900 -50/-50:.01:0:-90:.1
@end example
@item
Here is another noise-gate, this time for when the noise is at a higher level
than the signal (making it, in some ways, similar to squelch):
@example
compand=.1 .1:.1 .1:-45.1/-45.1 -45/-900 0/-900:.01:45:-90:.1
@end example
@end itemize
@section earwax
Make audio easier to listen to on headphones.
This filter adds `cues' to 44.1kHz stereo (i.e. audio CD format) audio
so that when listened to on headphones the stereo image is moved from
inside your head (standard for headphones) to outside and in front of
the listener (standard for speakers).
Ported from SoX.
@section equalizer
Apply a two-pole peaking equalisation (EQ) filter. With this
filter, the signal-level at and around a selected frequency can
be increased or decreased, whilst (unlike bandpass and bandreject
filters) that at all other frequencies is unchanged.
In order to produce complex equalisation curves, this filter can
be given several times, each with a different central frequency.
The filter accepts the following options:
@table @option
@item frequency, f
Set the filter's central frequency in Hz.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
@item gain, g
Set the required gain or attenuation in dB.
Beware of clipping when using a positive gain.
@end table
@section highpass
Apply a high-pass filter with 3dB point frequency.
The filter can be either single-pole, or double-pole (the default).
The filter roll off at 6dB per pole per octave (20dB per pole per decade).
The filter accepts the following options:
@table @option
@item frequency, f
Set frequency in Hz. Default is 3000.
@item poles, p
Set number of poles. Default is 2.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
Applies only to double-pole filter.
The default is 0.707q and gives a Butterworth response.
@end table
@section join
Join multiple input streams into one multi-channel stream.
The filter accepts the following named parameters:
@table @option
@item inputs
Number of input streams. Defaults to 2.
@item channel_layout
Desired output channel layout. Defaults to stereo.
@item map
Map channels from inputs to output. The argument is a '|'-separated list of
mappings, each in the @code{@var{input_idx}.@var{in_channel}-@var{out_channel}}
form. @var{input_idx} is the 0-based index of the input stream. @var{in_channel}
can be either the name of the input channel (e.g. FL for front left) or its
index in the specified input stream. @var{out_channel} is the name of the output
channel.
@end table
The filter will attempt to guess the mappings when those are not specified
explicitly. It does so by first trying to find an unused matching input channel
and if that fails it picks the first unused input channel.
E.g. to join 3 inputs (with properly set channel layouts)
@example
ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex join=inputs=3 OUTPUT
@end example
To build a 5.1 output from 6 single-channel streams:
@example
ffmpeg -i fl -i fr -i fc -i sl -i sr -i lfe -filter_complex
'join=inputs=6:channel_layout=5.1:map=0.0-FL|1.0-FR|2.0-FC|3.0-SL|4.0-SR|5.0-LFE'
out
@end example
@section ladspa
Load a LADSPA (Linux Audio Developer's Simple Plugin API) plugin.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-ladspa}.
@table @option
@item file, f
Specifies the name of LADSPA plugin library to load. If the environment
variable @env{LADSPA_PATH} is defined, the LADSPA plugin is searched in
each one of the directories specified by the colon separated list in
@env{LADSPA_PATH}, otherwise in the standard LADSPA paths, which are in
this order: @file{HOME/.ladspa/lib/}, @file{/usr/local/lib/ladspa/},
@file{/usr/lib/ladspa/}.
@item plugin, p
Specifies the plugin within the library. Some libraries contain only
one plugin, but others contain many of them. If this is not set filter
will list all available plugins within the specified library.
@item controls, c
Set the '|' separated list of controls which are zero or more floating point
values that determine the behavior of the loaded plugin (for example delay,
threshold or gain).
Controls need to be defined using the following syntax:
c0=@var{value0}|c1=@var{value1}|c2=@var{value2}|..., where
@var{valuei} is the value set on the @var{i}-th control.
If @option{controls} is set to @code{help}, all available controls and
their valid ranges are printed.
@item sample_rate, s
Specify the sample rate, default to 44100. Only used if plugin have
zero inputs.
@item nb_samples, n
Set the number of samples per channel per each output frame, default
is 1024. Only used if plugin have zero inputs.
@item duration, d
Set the minimum duration of the sourced audio. See the function
@code{av_parse_time()} for the accepted format, also check the "Time duration"
section in the ffmpeg-utils manual.
Note that the resulting duration may be greater than the specified duration,
as the generated audio is always cut at the end of a complete frame.
If not specified, or the expressed duration is negative, the audio is
supposed to be generated forever.
Only used if plugin have zero inputs.
@end table
@subsection Examples
@itemize
@item
List all available plugins within amp (LADSPA example plugin) library:
@example
ladspa=file=amp
@end example
@item
List all available controls and their valid ranges for @code{vcf_notch}
plugin from @code{VCF} library:
@example
ladspa=f=vcf:p=vcf_notch:c=help
@end example
@item
Simulate low quality audio equipment using @code{Computer Music Toolkit} (CMT)
plugin library:
@example
ladspa=file=cmt:plugin=lofi:controls=c0=22|c1=12|c2=12
@end example
@item
Add reverberation to the audio using TAP-plugins
(Tom's Audio Processing plugins):
@example
ladspa=file=tap_reverb:tap_reverb
@end example
@item
Generate white noise, with 0.2 amplitude:
@example
ladspa=file=cmt:noise_source_white:c=c0=.2
@end example
@item
Generate 20 bpm clicks using plugin @code{C* Click - Metronome} from the
@code{C* Audio Plugin Suite} (CAPS) library:
@example
ladspa=file=caps:Click:c=c1=20'
@end example
@item
Apply @code{C* Eq10X2 - Stereo 10-band equaliser} effect:
@example
ladspa=caps:Eq10X2:c=c0=-48|c9=-24|c3=12|c4=2
@end example
@end itemize
@subsection Commands
This filter supports the following commands:
@table @option
@item cN
Modify the @var{N}-th control value.
If the specified value is not valid, it is ignored and prior one is kept.
@end table
@section lowpass
Apply a low-pass filter with 3dB point frequency.
The filter can be either single-pole or double-pole (the default).
The filter roll off at 6dB per pole per octave (20dB per pole per decade).
The filter accepts the following options:
@table @option
@item frequency, f
Set frequency in Hz. Default is 500.
@item poles, p
Set number of poles. Default is 2.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Specify the band-width of a filter in width_type units.
Applies only to double-pole filter.
The default is 0.707q and gives a Butterworth response.
@end table
@section pan
Mix channels with specific gain levels. The filter accepts the output
channel layout followed by a set of channels definitions.
This filter is also designed to remap efficiently the channels of an audio
stream.
The filter accepts parameters of the form:
"@var{l}:@var{outdef}:@var{outdef}:..."
@table @option
@item l
output channel layout or number of channels
@item outdef
output channel specification, of the form:
"@var{out_name}=[@var{gain}*]@var{in_name}[+[@var{gain}*]@var{in_name}...]"
@item out_name
output channel to define, either a channel name (FL, FR, etc.) or a channel
number (c0, c1, etc.)
@item gain
multiplicative coefficient for the channel, 1 leaving the volume unchanged
@item in_name
input channel to use, see out_name for details; it is not possible to mix
named and numbered input channels
@end table
If the `=' in a channel specification is replaced by `<', then the gains for
that specification will be renormalized so that the total is 1, thus
avoiding clipping noise.
@subsection Mixing examples
For example, if you want to down-mix from stereo to mono, but with a bigger
factor for the left channel:
@example
pan=1:c0=0.9*c0+0.1*c1
@end example
A customized down-mix to stereo that works automatically for 3-, 4-, 5- and
7-channels surround:
@example
pan=stereo: FL < FL + 0.5*FC + 0.6*BL + 0.6*SL : FR < FR + 0.5*FC + 0.6*BR + 0.6*SR
@end example
Note that @command{ffmpeg} integrates a default down-mix (and up-mix) system
that should be preferred (see "-ac" option) unless you have very specific
needs.
@subsection Remapping examples
The channel remapping will be effective if, and only if:
@itemize
@item gain coefficients are zeroes or ones,
@item only one input per channel output,
@end itemize
If all these conditions are satisfied, the filter will notify the user ("Pure
channel mapping detected"), and use an optimized and lossless method to do the
remapping.
For example, if you have a 5.1 source and want a stereo audio stream by
dropping the extra channels:
@example
pan="stereo: c0=FL : c1=FR"
@end example
Given the same source, you can also switch front left and front right channels
and keep the input channel layout:
@example
pan="5.1: c0=c1 : c1=c0 : c2=c2 : c3=c3 : c4=c4 : c5=c5"
@end example
If the input is a stereo audio stream, you can mute the front left channel (and
still keep the stereo channel layout) with:
@example
pan="stereo:c1=c1"
@end example
Still with a stereo audio stream input, you can copy the right channel in both
front left and right:
@example
pan="stereo: c0=FR : c1=FR"
@end example
@section replaygain
ReplayGain scanner filter. This filter takes an audio stream as an input and
outputs it unchanged.
At end of filtering it displays @code{track_gain} and @code{track_peak}.
@section resample
Convert the audio sample format, sample rate and channel layout. This filter is
not meant to be used directly.
@section silencedetect
Detect silence in an audio stream.
This filter logs a message when it detects that the input audio volume is less
or equal to a noise tolerance value for a duration greater or equal to the
minimum detected noise duration.
The printed times and duration are expressed in seconds.
The filter accepts the following options:
@table @option
@item duration, d
Set silence duration until notification (default is 2 seconds).
@item noise, n
Set noise tolerance. Can be specified in dB (in case "dB" is appended to the
specified value) or amplitude ratio. Default is -60dB, or 0.001.
@end table
@subsection Examples
@itemize
@item
Detect 5 seconds of silence with -50dB noise tolerance:
@example
silencedetect=n=-50dB:d=5
@end example
@item
Complete example with @command{ffmpeg} to detect silence with 0.0001 noise
tolerance in @file{silence.mp3}:
@example
ffmpeg -i silence.mp3 -af silencedetect=noise=0.0001 -f null -
@end example
@end itemize
@section treble
Boost or cut treble (upper) frequencies of the audio using a two-pole
shelving filter with a response similar to that of a standard
hi-fi's tone-controls. This is also known as shelving equalisation (EQ).
The filter accepts the following options:
@table @option
@item gain, g
Give the gain at whichever is the lower of ~22 kHz and the
Nyquist frequency. Its useful range is about -20 (for a large cut)
to +20 (for a large boost). Beware of clipping when using a positive gain.
@item frequency, f
Set the filter's central frequency and so can be used
to extend or reduce the frequency range to be boosted or cut.
The default value is @code{3000} Hz.
@item width_type
Set method to specify band-width of filter.
@table @option
@item h
Hz
@item q
Q-Factor
@item o
octave
@item s
slope
@end table
@item width, w
Determine how steep is the filter's shelf transition.
@end table
@section volume
Adjust the input audio volume.
The filter accepts the following options:
@table @option
@item volume
Expresses how the audio volume will be increased or decreased.
Output values are clipped to the maximum value.
The output audio volume is given by the relation:
@example
@var{output_volume} = @var{volume} * @var{input_volume}
@end example
Default value for @var{volume} is 1.0.
@item precision
Set the mathematical precision.
This determines which input sample formats will be allowed, which affects the
precision of the volume scaling.
@table @option
@item fixed
8-bit fixed-point; limits input sample format to U8, S16, and S32.
@item float
32-bit floating-point; limits input sample format to FLT. (default)
@item double
64-bit floating-point; limits input sample format to DBL.
@end table
@end table
@subsection Examples
@itemize
@item
Halve the input audio volume:
@example
volume=volume=0.5
volume=volume=1/2
volume=volume=-6.0206dB
@end example
In all the above example the named key for @option{volume} can be
omitted, for example like in:
@example
volume=0.5
@end example
@item
Increase input audio power by 6 decibels using fixed-point precision:
@example
volume=volume=6dB:precision=fixed
@end example
@end itemize
@section volumedetect
Detect the volume of the input video.
The filter has no parameters. The input is not modified. Statistics about
the volume will be printed in the log when the input stream end is reached.
In particular it will show the mean volume (root mean square), maximum
volume (on a per-sample basis), and the beginning of a histogram of the
registered volume values (from the maximum value to a cumulated 1/1000 of
the samples).
All volumes are in decibels relative to the maximum PCM value.
@subsection Examples
Here is an excerpt of the output:
@example
[Parsed_volumedetect_0 @ 0xa23120] mean_volume: -27 dB
[Parsed_volumedetect_0 @ 0xa23120] max_volume: -4 dB
[Parsed_volumedetect_0 @ 0xa23120] histogram_4db: 6
[Parsed_volumedetect_0 @ 0xa23120] histogram_5db: 62
[Parsed_volumedetect_0 @ 0xa23120] histogram_6db: 286
[Parsed_volumedetect_0 @ 0xa23120] histogram_7db: 1042
[Parsed_volumedetect_0 @ 0xa23120] histogram_8db: 2551
[Parsed_volumedetect_0 @ 0xa23120] histogram_9db: 4609
[Parsed_volumedetect_0 @ 0xa23120] histogram_10db: 8409
@end example
It means that:
@itemize
@item
The mean square energy is approximately -27 dB, or 10^-2.7.
@item
The largest sample is at -4 dB, or more precisely between -4 dB and -5 dB.
@item
There are 6 samples at -4 dB, 62 at -5 dB, 286 at -6 dB, etc.
@end itemize
In other words, raising the volume by +4 dB does not cause any clipping,
raising it by +5 dB causes clipping for 6 samples, etc.
@c man end AUDIO FILTERS
@chapter Audio Sources
@c man begin AUDIO SOURCES
Below is a description of the currently available audio sources.
@section abuffer
Buffer audio frames, and make them available to the filter chain.
This source is mainly intended for a programmatic use, in particular
through the interface defined in @file{libavfilter/asrc_abuffer.h}.
It accepts the following named parameters:
@table @option
@item time_base
Timebase which will be used for timestamps of submitted frames. It must be
either a floating-point number or in @var{numerator}/@var{denominator} form.
@item sample_rate
The sample rate of the incoming audio buffers.
@item sample_fmt
The sample format of the incoming audio buffers.
Either a sample format name or its corresponging integer representation from
the enum AVSampleFormat in @file{libavutil/samplefmt.h}
@item channel_layout
The channel layout of the incoming audio buffers.
Either a channel layout name from channel_layout_map in
@file{libavutil/channel_layout.c} or its corresponding integer representation
from the AV_CH_LAYOUT_* macros in @file{libavutil/channel_layout.h}
@item channels
The number of channels of the incoming audio buffers.
If both @var{channels} and @var{channel_layout} are specified, then they
must be consistent.
@end table
@subsection Examples
@example
abuffer=sample_rate=44100:sample_fmt=s16p:channel_layout=stereo
@end example
will instruct the source to accept planar 16bit signed stereo at 44100Hz.
Since the sample format with name "s16p" corresponds to the number
6 and the "stereo" channel layout corresponds to the value 0x3, this is
equivalent to:
@example
abuffer=sample_rate=44100:sample_fmt=6:channel_layout=0x3
@end example
@section aevalsrc
Generate an audio signal specified by an expression.
This source accepts in input one or more expressions (one for each
channel), which are evaluated and used to generate a corresponding
audio signal.
This source accepts the following options:
@table @option
@item exprs
Set the '|'-separated expressions list for each separate channel. In case the
@option{channel_layout} option is not specified, the selected channel layout
depends on the number of provided expressions.
@item channel_layout, c
Set the channel layout. The number of channels in the specified layout
must be equal to the number of specified expressions.
@item duration, d
Set the minimum duration of the sourced audio. See the function
@code{av_parse_time()} for the accepted format.
Note that the resulting duration may be greater than the specified
duration, as the generated audio is always cut at the end of a
complete frame.
If not specified, or the expressed duration is negative, the audio is
supposed to be generated forever.
@item nb_samples, n
Set the number of samples per channel per each output frame,
default to 1024.
@item sample_rate, s
Specify the sample rate, default to 44100.
@end table
Each expression in @var{exprs} can contain the following constants:
@table @option
@item n
number of the evaluated sample, starting from 0
@item t
time of the evaluated sample expressed in seconds, starting from 0
@item s
sample rate
@end table
@subsection Examples
@itemize
@item
Generate silence:
@example
aevalsrc=0
@end example
@item
Generate a sin signal with frequency of 440 Hz, set sample rate to
8000 Hz:
@example
aevalsrc="sin(440*2*PI*t):s=8000"
@end example
@item
Generate a two channels signal, specify the channel layout (Front
Center + Back Center) explicitly:
@example
aevalsrc="sin(420*2*PI*t)|cos(430*2*PI*t):c=FC|BC"
@end example
@item
Generate white noise:
@example
aevalsrc="-2+random(0)"
@end example
@item
Generate an amplitude modulated signal:
@example
aevalsrc="sin(10*2*PI*t)*sin(880*2*PI*t)"
@end example
@item
Generate 2.5 Hz binaural beats on a 360 Hz carrier:
@example
aevalsrc="0.1*sin(2*PI*(360-2.5/2)*t) | 0.1*sin(2*PI*(360+2.5/2)*t)"
@end example
@end itemize
@section anullsrc
Null audio source, return unprocessed audio frames. It is mainly useful
as a template and to be employed in analysis / debugging tools, or as
the source for filters which ignore the input data (for example the sox
synth filter).
This source accepts the following options:
@table @option
@item channel_layout, cl
Specify the channel layout, and can be either an integer or a string
representing a channel layout. The default value of @var{channel_layout}
is "stereo".
Check the channel_layout_map definition in
@file{libavutil/channel_layout.c} for the mapping between strings and
channel layout values.
@item sample_rate, r
Specify the sample rate, and defaults to 44100.
@item nb_samples, n
Set the number of samples per requested frames.
@end table
@subsection Examples
@itemize
@item
Set the sample rate to 48000 Hz and the channel layout to AV_CH_LAYOUT_MONO.
@example
anullsrc=r=48000:cl=4
@end example
@item
Do the same operation with a more obvious syntax:
@example
anullsrc=r=48000:cl=mono
@end example
@end itemize
All the parameters need to be explicitly defined.
@section flite
Synthesize a voice utterance using the libflite library.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-libflite}.
Note that the flite library is not thread-safe.
The filter accepts the following options:
@table @option
@item list_voices
If set to 1, list the names of the available voices and exit
immediately. Default value is 0.
@item nb_samples, n
Set the maximum number of samples per frame. Default value is 512.
@item textfile
Set the filename containing the text to speak.
@item text
Set the text to speak.
@item voice, v
Set the voice to use for the speech synthesis. Default value is
@code{kal}. See also the @var{list_voices} option.
@end table
@subsection Examples
@itemize
@item
Read from file @file{speech.txt}, and synthetize the text using the
standard flite voice:
@example
flite=textfile=speech.txt
@end example
@item
Read the specified text selecting the @code{slt} voice:
@example
flite=text='So fare thee well, poor devil of a Sub-Sub, whose commentator I am':voice=slt
@end example
@item
Input text to ffmpeg:
@example
ffmpeg -f lavfi -i flite=text='So fare thee well, poor devil of a Sub-Sub, whose commentator I am':voice=slt
@end example
@item
Make @file{ffplay} speak the specified text, using @code{flite} and
the @code{lavfi} device:
@example
ffplay -f lavfi flite=text='No more be grieved for which that thou hast done.'
@end example
@end itemize
For more information about libflite, check:
@url{http://www.speech.cs.cmu.edu/flite/}
@section sine
Generate an audio signal made of a sine wave with amplitude 1/8.
The audio signal is bit-exact.
The filter accepts the following options:
@table @option
@item frequency, f
Set the carrier frequency. Default is 440 Hz.
@item beep_factor, b
Enable a periodic beep every second with frequency @var{beep_factor} times
the carrier frequency. Default is 0, meaning the beep is disabled.
@item sample_rate, r
Specify the sample rate, default is 44100.
@item duration, d
Specify the duration of the generated audio stream.
@item samples_per_frame
Set the number of samples per output frame, default is 1024.
@end table
@subsection Examples
@itemize
@item
Generate a simple 440 Hz sine wave:
@example
sine
@end example
@item
Generate a 220 Hz sine wave with a 880 Hz beep each second, for 5 seconds:
@example
sine=220:4:d=5
sine=f=220:b=4:d=5
sine=frequency=220:beep_factor=4:duration=5
@end example
@end itemize
@c man end AUDIO SOURCES
@chapter Audio Sinks
@c man begin AUDIO SINKS
Below is a description of the currently available audio sinks.
@section abuffersink
Buffer audio frames, and make them available to the end of filter chain.
This sink is mainly intended for programmatic use, in particular
through the interface defined in @file{libavfilter/buffersink.h}
or the options system.
It accepts a pointer to an AVABufferSinkContext structure, which
defines the incoming buffers' formats, to be passed as the opaque
parameter to @code{avfilter_init_filter} for initialization.
@section anullsink
Null audio sink, do absolutely nothing with the input audio. It is
mainly useful as a template and to be employed in analysis / debugging
tools.
@c man end AUDIO SINKS
@chapter Video Filters
@c man begin VIDEO FILTERS
When you configure your FFmpeg build, you can disable any of the
existing filters using @code{--disable-filters}.
The configure output will show the video filters included in your
build.
Below is a description of the currently available video filters.
@section alphaextract
Extract the alpha component from the input as a grayscale video. This
is especially useful with the @var{alphamerge} filter.
@section alphamerge
Add or replace the alpha component of the primary input with the
grayscale value of a second input. This is intended for use with
@var{alphaextract} to allow the transmission or storage of frame
sequences that have alpha in a format that doesn't support an alpha
channel.
For example, to reconstruct full frames from a normal YUV-encoded video
and a separate video created with @var{alphaextract}, you might use:
@example
movie=in_alpha.mkv [alpha]; [in][alpha] alphamerge [out]
@end example
Since this filter is designed for reconstruction, it operates on frame
sequences without considering timestamps, and terminates when either
input reaches end of stream. This will cause problems if your encoding
pipeline drops frames. If you're trying to apply an image as an
overlay to a video stream, consider the @var{overlay} filter instead.
@section ass
Same as the @ref{subtitles} filter, except that it doesn't require libavcodec
and libavformat to work. On the other hand, it is limited to ASS (Advanced
Substation Alpha) subtitles files.
@section bbox
Compute the bounding box for the non-black pixels in the input frame
luminance plane.
This filter computes the bounding box containing all the pixels with a
luminance value greater than the minimum allowed value.
The parameters describing the bounding box are printed on the filter
log.
The filter accepts the following option:
@table @option
@item min_val
Set the minimal luminance value. Default is @code{16}.
@end table
@section blackdetect
Detect video intervals that are (almost) completely black. Can be
useful to detect chapter transitions, commercials, or invalid
recordings. Output lines contains the time for the start, end and
duration of the detected black interval expressed in seconds.
In order to display the output lines, you need to set the loglevel at
least to the AV_LOG_INFO value.
The filter accepts the following options:
@table @option
@item black_min_duration, d
Set the minimum detected black duration expressed in seconds. It must
be a non-negative floating point number.
Default value is 2.0.
@item picture_black_ratio_th, pic_th
Set the threshold for considering a picture "black".
Express the minimum value for the ratio:
@example
@var{nb_black_pixels} / @var{nb_pixels}
@end example
for which a picture is considered black.
Default value is 0.98.
@item pixel_black_th, pix_th
Set the threshold for considering a pixel "black".
The threshold expresses the maximum pixel luminance value for which a
pixel is considered "black". The provided value is scaled according to
the following equation:
@example
@var{absolute_threshold} = @var{luminance_minimum_value} + @var{pixel_black_th} * @var{luminance_range_size}
@end example
@var{luminance_range_size} and @var{luminance_minimum_value} depend on
the input video format, the range is [0-255] for YUV full-range
formats and [16-235] for YUV non full-range formats.
Default value is 0.10.
@end table
The following example sets the maximum pixel threshold to the minimum
value, and detects only black intervals of 2 or more seconds:
@example
blackdetect=d=2:pix_th=0.00
@end example
@section blackframe
Detect frames that are (almost) completely black. Can be useful to
detect chapter transitions or commercials. Output lines consist of
the frame number of the detected frame, the percentage of blackness,
the position in the file if known or -1 and the timestamp in seconds.
In order to display the output lines, you need to set the loglevel at
least to the AV_LOG_INFO value.
The filter accepts the following options:
@table @option
@item amount
Set the percentage of the pixels that have to be below the threshold, defaults
to @code{98}.
@item threshold, thresh
Set the threshold below which a pixel value is considered black, defaults to
@code{32}.
@end table
@section blend
Blend two video frames into each other.
It takes two input streams and outputs one stream, the first input is the
"top" layer and second input is "bottom" layer.
Output terminates when shortest input terminates.
A description of the accepted options follows.
@table @option
@item c0_mode
@item c1_mode
@item c2_mode
@item c3_mode
@item all_mode
Set blend mode for specific pixel component or all pixel components in case
of @var{all_mode}. Default value is @code{normal}.
Available values for component modes are:
@table @samp
@item addition
@item and
@item average
@item burn
@item darken
@item difference
@item divide
@item dodge
@item exclusion
@item hardlight
@item lighten
@item multiply
@item negation
@item normal
@item or
@item overlay
@item phoenix
@item pinlight
@item reflect
@item screen
@item softlight
@item subtract
@item vividlight
@item xor
@end table
@item c0_opacity
@item c1_opacity
@item c2_opacity
@item c3_opacity
@item all_opacity
Set blend opacity for specific pixel component or all pixel components in case
of @var{all_opacity}. Only used in combination with pixel component blend modes.
@item c0_expr
@item c1_expr
@item c2_expr
@item c3_expr
@item all_expr
Set blend expression for specific pixel component or all pixel components in case
of @var{all_expr}. Note that related mode options will be ignored if those are set.
The expressions can use the following variables:
@table @option
@item N
The sequential number of the filtered frame, starting from @code{0}.
@item X
@item Y
the coordinates of the current sample
@item W
@item H
the width and height of currently filtered plane
@item SW
@item SH
Width and height scale depending on the currently filtered plane. It is the
ratio between the corresponding luma plane number of pixels and the current
plane ones. E.g. for YUV4:2:0 the values are @code{1,1} for the luma plane, and
@code{0.5,0.5} for chroma planes.
@item T
Time of the current frame, expressed in seconds.
@item TOP, A
Value of pixel component at current location for first video frame (top layer).
@item BOTTOM, B
Value of pixel component at current location for second video frame (bottom layer).
@end table
@item shortest
Force termination when the shortest input terminates. Default is @code{0}.
@item repeatlast
Continue applying the last bottom frame after the end of the stream. A value of
@code{0} disable the filter after the last frame of the bottom layer is reached.
Default is @code{1}.
@end table
@subsection Examples
@itemize
@item
Apply transition from bottom layer to top layer in first 10 seconds:
@example
blend=all_expr='A*(if(gte(T,10),1,T/10))+B*(1-(if(gte(T,10),1,T/10)))'
@end example
@item
Apply 1x1 checkerboard effect:
@example
blend=all_expr='if(eq(mod(X,2),mod(Y,2)),A,B)'
@end example
@end itemize
@section boxblur
Apply boxblur algorithm to the input video.
The filter accepts the following options:
@table @option
@item luma_radius, lr
@item luma_power, lp
@item chroma_radius, cr
@item chroma_power, cp
@item alpha_radius, ar
@item alpha_power, ap
@end table
A description of the accepted options follows.
@table @option
@item luma_radius, lr
@item chroma_radius, cr
@item alpha_radius, ar
Set an expression for the box radius in pixels used for blurring the
corresponding input plane.
The radius value must be a non-negative number, and must not be
greater than the value of the expression @code{min(w,h)/2} for the
luma and alpha planes, and of @code{min(cw,ch)/2} for the chroma
planes.
Default value for @option{luma_radius} is "2". If not specified,
@option{chroma_radius} and @option{alpha_radius} default to the
corresponding value set for @option{luma_radius}.
The expressions can contain the following constants:
@table @option
@item w
@item h
the input width and height in pixels
@item cw
@item ch
the input chroma image width and height in pixels
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table
@item luma_power, lp
@item chroma_power, cp
@item alpha_power, ap
Specify how many times the boxblur filter is applied to the
corresponding plane.
Default value for @option{luma_power} is 2. If not specified,
@option{chroma_power} and @option{alpha_power} default to the
corresponding value set for @option{luma_power}.
A value of 0 will disable the effect.
@end table
@subsection Examples
@itemize
@item
Apply a boxblur filter with luma, chroma, and alpha radius
set to 2:
@example
boxblur=luma_radius=2:luma_power=1
boxblur=2:1
@end example
@item
Set luma radius to 2, alpha and chroma radius to 0:
@example
boxblur=2:1:cr=0:ar=0
@end example
@item
Set luma and chroma radius to a fraction of the video dimension:
@example
boxblur=luma_radius=min(h\,w)/10:luma_power=1:chroma_radius=min(cw\,ch)/10:chroma_power=1
@end example
@end itemize
@section colorbalance
Modify intensity of primary colors (red, green and blue) of input frames.
The filter allows an input frame to be adjusted in the shadows, midtones or highlights
regions for the red-cyan, green-magenta or blue-yellow balance.
A positive adjustment value shifts the balance towards the primary color, a negative
value towards the complementary color.
The filter accepts the following options:
@table @option
@item rs
@item gs
@item bs
Adjust red, green and blue shadows (darkest pixels).
@item rm
@item gm
@item bm
Adjust red, green and blue midtones (medium pixels).
@item rh
@item gh
@item bh
Adjust red, green and blue highlights (brightest pixels).
Allowed ranges for options are @code{[-1.0, 1.0]}. Defaults are @code{0}.
@end table
@subsection Examples
@itemize
@item
Add red color cast to shadows:
@example
colorbalance=rs=.3
@end example
@end itemize
@section colorchannelmixer
Adjust video input frames by re-mixing color channels.
This filter modifies a color channel by adding the values associated to
the other channels of the same pixels. For example if the value to
modify is red, the output value will be:
@example
@var{red}=@var{red}*@var{rr} + @var{blue}*@var{rb} + @var{green}*@var{rg} + @var{alpha}*@var{ra}
@end example
The filter accepts the following options:
@table @option
@item rr
@item rg
@item rb
@item ra
Adjust contribution of input red, green, blue and alpha channels for output red channel.
Default is @code{1} for @var{rr}, and @code{0} for @var{rg}, @var{rb} and @var{ra}.
@item gr
@item gg
@item gb
@item ga
Adjust contribution of input red, green, blue and alpha channels for output green channel.
Default is @code{1} for @var{gg}, and @code{0} for @var{gr}, @var{gb} and @var{ga}.
@item br
@item bg
@item bb
@item ba
Adjust contribution of input red, green, blue and alpha channels for output blue channel.
Default is @code{1} for @var{bb}, and @code{0} for @var{br}, @var{bg} and @var{ba}.
@item ar
@item ag
@item ab
@item aa
Adjust contribution of input red, green, blue and alpha channels for output alpha channel.
Default is @code{1} for @var{aa}, and @code{0} for @var{ar}, @var{ag} and @var{ab}.
Allowed ranges for options are @code{[-2.0, 2.0]}.
@end table
@subsection Examples
@itemize
@item
Convert source to grayscale:
@example
colorchannelmixer=.3:.4:.3:0:.3:.4:.3:0:.3:.4:.3
@end example
@item
Simulate sepia tones:
@example
colorchannelmixer=.393:.769:.189:0:.349:.686:.168:0:.272:.534:.131
@end example
@end itemize
@section colormatrix
Convert color matrix.
The filter accepts the following options:
@table @option
@item src
@item dst
Specify the source and destination color matrix. Both values must be
specified.
The accepted values are:
@table @samp
@item bt709
BT.709
@item bt601
BT.601
@item smpte240m
SMPTE-240M
@item fcc
FCC
@end table
@end table
For example to convert from BT.601 to SMPTE-240M, use the command:
@example
colormatrix=bt601:smpte240m
@end example
@section copy
Copy the input source unchanged to the output. Mainly useful for
testing purposes.
@section crop
Crop the input video to given dimensions.
The filter accepts the following options:
@table @option
@item w, out_w
Width of the output video. It defaults to @code{iw}.
This expression is evaluated only once during the filter
configuration.
@item h, out_h
Height of the output video. It defaults to @code{ih}.
This expression is evaluated only once during the filter
configuration.
@item x
Horizontal position, in the input video, of the left edge of the output video.
It defaults to @code{(in_w-out_w)/2}.
This expression is evaluated per-frame.
@item y
Vertical position, in the input video, of the top edge of the output video.
It defaults to @code{(in_h-out_h)/2}.
This expression is evaluated per-frame.
@item keep_aspect
If set to 1 will force the output display aspect ratio
to be the same of the input, by changing the output sample aspect
ratio. It defaults to 0.
@end table
The @var{out_w}, @var{out_h}, @var{x}, @var{y} parameters are
expressions containing the following constants:
@table @option
@item x
@item y
the computed values for @var{x} and @var{y}. They are evaluated for
each new frame.
@item in_w
@item in_h
the input width and height
@item iw
@item ih
same as @var{in_w} and @var{in_h}
@item out_w
@item out_h
the output (cropped) width and height
@item ow
@item oh
same as @var{out_w} and @var{out_h}
@item a
same as @var{iw} / @var{ih}
@item sar
input sample aspect ratio
@item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@item n
the number of input frame, starting from 0
@item pos
the position in the file of the input frame, NAN if unknown
@item t
timestamp expressed in seconds, NAN if the input timestamp is unknown
@end table
The expression for @var{out_w} may depend on the value of @var{out_h},
and the expression for @var{out_h} may depend on @var{out_w}, but they
cannot depend on @var{x} and @var{y}, as @var{x} and @var{y} are
evaluated after @var{out_w} and @var{out_h}.
The @var{x} and @var{y} parameters specify the expressions for the
position of the top-left corner of the output (non-cropped) area. They
are evaluated for each frame. If the evaluated value is not valid, it
is approximated to the nearest valid value.
The expression for @var{x} may depend on @var{y}, and the expression
for @var{y} may depend on @var{x}.
@subsection Examples
@itemize
@item
Crop area with size 100x100 at position (12,34).
@example
crop=100:100:12:34
@end example
Using named options, the example above becomes:
@example
crop=w=100:h=100:x=12:y=34
@end example
@item
Crop the central input area with size 100x100:
@example
crop=100:100
@end example
@item
Crop the central input area with size 2/3 of the input video:
@example
crop=2/3*in_w:2/3*in_h
@end example
@item
Crop the input video central square:
@example
crop=out_w=in_h
crop=in_h
@end example
@item
Delimit the rectangle with the top-left corner placed at position
100:100 and the right-bottom corner corresponding to the right-bottom
corner of the input image:
@example
crop=in_w-100:in_h-100:100:100
@end example
@item
Crop 10 pixels from the left and right borders, and 20 pixels from
the top and bottom borders
@example
crop=in_w-2*10:in_h-2*20
@end example
@item
Keep only the bottom right quarter of the input image:
@example
crop=in_w/2:in_h/2:in_w/2:in_h/2
@end example
@item
Crop height for getting Greek harmony:
@example
crop=in_w:1/PHI*in_w
@end example
@item
Appply trembling effect:
@example
crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(n/10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(n/7)
@end example
@item
Apply erratic camera effect depending on timestamp:
@example
crop=in_w/2:in_h/2:(in_w-out_w)/2+((in_w-out_w)/2)*sin(t*10):(in_h-out_h)/2 +((in_h-out_h)/2)*sin(t*13)"
@end example
@item
Set x depending on the value of y:
@example
crop=in_w/2:in_h/2:y:10+10*sin(n/10)
@end example
@end itemize
@section cropdetect
Auto-detect crop size.
Calculate necessary cropping parameters and prints the recommended
parameters through the logging system. The detected dimensions
correspond to the non-black area of the input video.
The filter accepts the following options:
@table @option
@item limit
Set higher black value threshold, which can be optionally specified
from nothing (0) to everything (255). An intensity value greater
to the set value is considered non-black. Default value is 24.
@item round
Set the value for which the width/height should be divisible by. The
offset is automatically adjusted to center the video. Use 2 to get
only even dimensions (needed for 4:2:2 video). 16 is best when
encoding to most video codecs. Default value is 16.
@item reset_count, reset
Set the counter that determines after how many frames cropdetect will
reset the previously detected largest video area and start over to
detect the current optimal crop area. Default value is 0.
This can be useful when channel logos distort the video area. 0
indicates never reset and return the largest area encountered during
playback.
@end table
@anchor{curves}
@section curves
Apply color adjustments using curves.
This filter is similar to the Adobe Photoshop and GIMP curves tools. Each
component (red, green and blue) has its values defined by @var{N} key points
tied from each other using a smooth curve. The x-axis represents the pixel
values from the input frame, and the y-axis the new pixel values to be set for
the output frame.
By default, a component curve is defined by the two points @var{(0;0)} and
@var{(1;1)}. This creates a straight line where each original pixel value is
"adjusted" to its own value, which means no change to the image.
The filter allows you to redefine these two points and add some more. A new
curve (using a natural cubic spline interpolation) will be define to pass
smoothly through all these new coordinates. The new defined points needs to be
strictly increasing over the x-axis, and their @var{x} and @var{y} values must
be in the @var{[0;1]} interval. If the computed curves happened to go outside
the vector spaces, the values will be clipped accordingly.
If there is no key point defined in @code{x=0}, the filter will automatically
insert a @var{(0;0)} point. In the same way, if there is no key point defined
in @code{x=1}, the filter will automatically insert a @var{(1;1)} point.
The filter accepts the following options:
@table @option
@item preset
Select one of the available color presets. This option can be used in addition
to the @option{r}, @option{g}, @option{b} parameters; in this case, the later
options takes priority on the preset values.
Available presets are:
@table @samp
@item none
@item color_negative
@item cross_process
@item darker
@item increase_contrast
@item lighter
@item linear_contrast
@item medium_contrast
@item negative
@item strong_contrast
@item vintage
@end table
Default is @code{none}.
@item master, m
Set the master key points. These points will define a second pass mapping. It
is sometimes called a "luminance" or "value" mapping. It can be used with
@option{r}, @option{g}, @option{b} or @option{all} since it acts like a
post-processing LUT.
@item red, r
Set the key points for the red component.
@item green, g
Set the key points for the green component.
@item blue, b
Set the key points for the blue component.
@item all
Set the key points for all components (not including master).
Can be used in addition to the other key points component
options. In this case, the unset component(s) will fallback on this
@option{all} setting.
@item psfile
Specify a Photoshop curves file (@code{.asv}) to import the settings from.
@end table
To avoid some filtergraph syntax conflicts, each key points list need to be
defined using the following syntax: @code{x0/y0 x1/y1 x2/y2 ...}.
@subsection Examples
@itemize
@item
Increase slightly the middle level of blue:
@example
curves=blue='0.5/0.58'
@end example
@item
Vintage effect:
@example
curves=r='0/0.11 .42/.51 1/0.95':g='0.50/0.48':b='0/0.22 .49/.44 1/0.8'
@end example
Here we obtain the following coordinates for each components:
@table @var
@item red
@code{(0;0.11) (0.42;0.51) (1;0.95)}
@item green
@code{(0;0) (0.50;0.48) (1;1)}
@item blue
@code{(0;0.22) (0.49;0.44) (1;0.80)}
@end table
@item
The previous example can also be achieved with the associated built-in preset:
@example
curves=preset=vintage
@end example
@item
Or simply:
@example
curves=vintage
@end example
@item
Use a Photoshop preset and redefine the points of the green component:
@example
curves=psfile='MyCurvesPresets/purple.asv':green='0.45/0.53'
@end example
@end itemize
@section dctdnoiz
Denoise frames using 2D DCT (frequency domain filtering).
This filter is not designed for real time and can be extremely slow.
The filter accepts the following options:
@table @option
@item sigma, s
Set the noise sigma constant.
This @var{sigma} defines a hard threshold of @code{3 * sigma}; every DCT
coefficient (absolute value) below this threshold with be dropped.
If you need a more advanced filtering, see @option{expr}.
Default is @code{0}.
@item overlap
Set number overlapping pixels for each block. Each block is of size
@code{16x16}. Since the filter can be slow, you may want to reduce this value,
at the cost of a less effective filter and the risk of various artefacts.
If the overlapping value doesn't allow to process the whole input width or
height, a warning will be displayed and according borders won't be denoised.
Default value is @code{15}.
@item expr, e
Set the coefficient factor expression.
For each coefficient of a DCT block, this expression will be evaluated as a
multiplier value for the coefficient.
If this is option is set, the @option{sigma} option will be ignored.
The absolute value of the coefficient can be accessed through the @var{c}
variable.
@end table
@subsection Examples
Apply a denoise with a @option{sigma} of @code{4.5}:
@example
dctdnoiz=4.5
@end example
The same operation can be achieved using the expression system:
@example
dctdnoiz=e='gte(c, 4.5*3)'
@end example
@anchor{decimate}
@section decimate
Drop duplicated frames at regular intervals.
The filter accepts the following options:
@table @option
@item cycle
Set the number of frames from which one will be dropped. Setting this to
@var{N} means one frame in every batch of @var{N} frames will be dropped.
Default is @code{5}.
@item dupthresh
Set the threshold for duplicate detection. If the difference metric for a frame
is less than or equal to this value, then it is declared as duplicate. Default
is @code{1.1}
@item scthresh
Set scene change threshold. Default is @code{15}.
@item blockx
@item blocky
Set the size of the x and y-axis blocks used during metric calculations.
Larger blocks give better noise suppression, but also give worse detection of
small movements. Must be a power of two. Default is @code{32}.
@item ppsrc
Mark main input as a pre-processed input and activate clean source input
stream. This allows the input to be pre-processed with various filters to help
the metrics calculation while keeping the frame selection lossless. When set to
@code{1}, the first stream is for the pre-processed input, and the second
stream is the clean source from where the kept frames are chosen. Default is
@code{0}.
@item chroma
Set whether or not chroma is considered in the metric calculations. Default is
@code{1}.
@end table
@section delogo
Suppress a TV station logo by a simple interpolation of the surrounding
pixels. Just set a rectangle covering the logo and watch it disappear
(and sometimes something even uglier appear - your mileage may vary).
This filter accepts the following options:
@table @option
@item x
@item y
Specify the top left corner coordinates of the logo. They must be
specified.
@item w
@item h
Specify the width and height of the logo to clear. They must be
specified.
@item band, t
Specify the thickness of the fuzzy edge of the rectangle (added to
@var{w} and @var{h}). The default value is 4.
@item show
When set to 1, a green rectangle is drawn on the screen to simplify
finding the right @var{x}, @var{y}, @var{w}, and @var{h} parameters.
The default value is 0.
The rectangle is drawn on the outermost pixels which will be (partly)
replaced with interpolated values. The values of the next pixels
immediately outside this rectangle in each direction will be used to
compute the interpolated pixel values inside the rectangle.
@end table
@subsection Examples
@itemize
@item
Set a rectangle covering the area with top left corner coordinates 0,0
and size 100x77, setting a band of size 10:
@example
delogo=x=0:y=0:w=100:h=77:band=10
@end example
@end itemize
@section deshake
Attempt to fix small changes in horizontal and/or vertical shift. This
filter helps remove camera shake from hand-holding a camera, bumping a
tripod, moving on a vehicle, etc.
The filter accepts the following options:
@table @option
@item x
@item y
@item w
@item h
Specify a rectangular area where to limit the search for motion
vectors.
If desired the search for motion vectors can be limited to a
rectangular area of the frame defined by its top left corner, width
and height. These parameters have the same meaning as the drawbox
filter which can be used to visualise the position of the bounding
box.
This is useful when simultaneous movement of subjects within the frame
might be confused for camera motion by the motion vector search.
If any or all of @var{x}, @var{y}, @var{w} and @var{h} are set to -1
then the full frame is used. This allows later options to be set
without specifying the bounding box for the motion vector search.
Default - search the whole frame.
@item rx
@item ry
Specify the maximum extent of movement in x and y directions in the
range 0-64 pixels. Default 16.
@item edge
Specify how to generate pixels to fill blanks at the edge of the
frame. Available values are:
@table @samp
@item blank, 0
Fill zeroes at blank locations
@item original, 1
Original image at blank locations
@item clamp, 2
Extruded edge value at blank locations
@item mirror, 3
Mirrored edge at blank locations
@end table
Default value is @samp{mirror}.
@item blocksize
Specify the blocksize to use for motion search. Range 4-128 pixels,
default 8.
@item contrast
Specify the contrast threshold for blocks. Only blocks with more than
the specified contrast (difference between darkest and lightest
pixels) will be considered. Range 1-255, default 125.
@item search
Specify the search strategy. Available values are:
@table @samp
@item exhaustive, 0
Set exhaustive search
@item less, 1
Set less exhaustive search.
@end table
Default value is @samp{exhaustive}.
@item filename
If set then a detailed log of the motion search is written to the
specified file.
@item opencl
If set to 1, specify using OpenCL capabilities, only available if
FFmpeg was configured with @code{--enable-opencl}. Default value is 0.
@end table
@section drawbox
Draw a colored box on the input image.
This filter accepts the following options:
@table @option
@item x
@item y
The expressions which specify the top left corner coordinates of the box. Default to 0.
@item width, w
@item height, h
The expressions which specify the width and height of the box, if 0 they are interpreted as
the input width and height. Default to 0.
@item color, c
Specify the color of the box to write. For the general syntax of this option,
check the "Color" section in the ffmpeg-utils manual. If the special
value @code{invert} is used, the box edge color is the same as the
video with inverted luma.
@item thickness, t
The expression which sets the thickness of the box edge. Default value is @code{3}.
See below for the list of accepted constants.
@end table
The parameters for @var{x}, @var{y}, @var{w} and @var{h} and @var{t} are expressions containing the
following constants:
@table @option
@item dar
The input display aspect ratio, it is the same as (@var{w} / @var{h}) * @var{sar}.
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@item in_h, ih
@item in_w, iw
The input width and height.
@item sar
The input sample aspect ratio.
@item x
@item y
The x and y offset coordinates where the box is drawn.
@item w
@item h
The width and height of the drawn box.
@item t
The thickness of the drawn box.
These constants allow the @var{x}, @var{y}, @var{w}, @var{h} and @var{t} expressions to refer to
each other, so you may for example specify @code{y=x/dar} or @code{h=w/dar}.
@end table
@subsection Examples
@itemize
@item
Draw a black box around the edge of the input image:
@example
drawbox
@end example
@item
Draw a box with color red and an opacity of 50%:
@example
drawbox=10:20:200:60:red@@0.5
@end example
The previous example can be specified as:
@example
drawbox=x=10:y=20:w=200:h=60:color=red@@0.5
@end example
@item
Fill the box with pink color:
@example
drawbox=x=10:y=10:w=100:h=100:color=pink@@0.5:t=max
@end example
@item
Draw a 2-pixel red 2.40:1 mask:
@example
drawbox=x=-t:y=0.5*(ih-iw/2.4)-t:w=iw+t*2:h=iw/2.4+t*2:t=2:c=red
@end example
@end itemize
@section drawgrid
Draw a grid on the input image.
This filter accepts the following options:
@table @option
@item x
@item y
The expressions which specify the coordinates of some point of grid intersection (meant to configure offset). Both default to 0.
@item width, w
@item height, h
The expressions which specify the width and height of the grid cell, if 0 they are interpreted as the
input width and height, respectively, minus @code{thickness}, so image gets
framed. Default to 0.
@item color, c
Specify the color of the grid. For the general syntax of this option,
check the "Color" section in the ffmpeg-utils manual. If the special
value @code{invert} is used, the grid color is the same as the
video with inverted luma.
@item thickness, t
The expression which sets the thickness of the grid line. Default value is @code{1}.
See below for the list of accepted constants.
@end table
The parameters for @var{x}, @var{y}, @var{w} and @var{h} and @var{t} are expressions containing the
following constants:
@table @option
@item dar
The input display aspect ratio, it is the same as (@var{w} / @var{h}) * @var{sar}.
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@item in_h, ih
@item in_w, iw
The input grid cell width and height.
@item sar
The input sample aspect ratio.
@item x
@item y
The x and y coordinates of some point of grid intersection (meant to configure offset).
@item w
@item h
The width and height of the drawn cell.
@item t
The thickness of the drawn cell.
These constants allow the @var{x}, @var{y}, @var{w}, @var{h} and @var{t} expressions to refer to
each other, so you may for example specify @code{y=x/dar} or @code{h=w/dar}.
@end table
@subsection Examples
@itemize
@item
Draw a grid with cell 100x100 pixels, thickness 2 pixels, with color red and an opacity of 50%:
@example
drawgrid=width=100:height=100:thickness=2:color=red@@0.5
@end example
@item
Draw a white 3x3 grid with an opacity of 50%:
@example
drawgrid=w=iw/3:h=ih/3:t=2:c=white@@0.5
@end example
@end itemize
@anchor{drawtext}
@section drawtext
Draw text string or text from specified file on top of video using the
libfreetype library.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-libfreetype}.
@subsection Syntax
The description of the accepted parameters follows.
@table @option
@item box
Used to draw a box around text using background color.
Value should be either 1 (enable) or 0 (disable).
The default value of @var{box} is 0.
@item boxcolor
The color to be used for drawing box around text. For the syntax of this
option, check the "Color" section in the ffmpeg-utils manual.
The default value of @var{boxcolor} is "white".
@item expansion
Select how the @var{text} is expanded. Can be either @code{none},
@code{strftime} (deprecated) or
@code{normal} (default). See the @ref{drawtext_expansion, Text expansion} section
below for details.
@item fix_bounds
If true, check and fix text coords to avoid clipping.
@item fontcolor
The color to be used for drawing fonts. For the syntax of this option, check
the "Color" section in the ffmpeg-utils manual.
The default value of @var{fontcolor} is "black".
@item fontfile
The font file to be used for drawing text. Path must be included.
This parameter is mandatory.
@item fontsize
The font size to be used for drawing text.
The default value of @var{fontsize} is 16.
@item ft_load_flags
Flags to be used for loading the fonts.
The flags map the corresponding flags supported by libfreetype, and are
a combination of the following values:
@table @var
@item default
@item no_scale
@item no_hinting
@item render
@item no_bitmap
@item vertical_layout
@item force_autohint
@item crop_bitmap
@item pedantic
@item ignore_global_advance_width
@item no_recurse
@item ignore_transform
@item monochrome
@item linear_design
@item no_autohint
@end table
Default value is "render".
For more information consult the documentation for the FT_LOAD_*
libfreetype flags.
@item shadowcolor
The color to be used for drawing a shadow behind the drawn text. For the
syntax of this option, check the "Color" section in the ffmpeg-utils manual.
The default value of @var{shadowcolor} is "black".
@item shadowx
@item shadowy
The x and y offsets for the text shadow position with respect to the
position of the text. They can be either positive or negative
values. Default value for both is "0".
@item start_number
The starting frame number for the n/frame_num variable. The default value
is "0".
@item tabsize
The size in number of spaces to use for rendering the tab.
Default value is 4.
@item timecode
Set the initial timecode representation in "hh:mm:ss[:;.]ff"
format. It can be used with or without text parameter. @var{timecode_rate}
option must be specified.
@item timecode_rate, rate, r
Set the timecode frame rate (timecode only).
@item text
The text string to be drawn. The text must be a sequence of UTF-8
encoded characters.
This parameter is mandatory if no file is specified with the parameter
@var{textfile}.
@item textfile
A text file containing text to be drawn. The text must be a sequence
of UTF-8 encoded characters.
This parameter is mandatory if no text string is specified with the
parameter @var{text}.
If both @var{text} and @var{textfile} are specified, an error is thrown.
@item reload
If set to 1, the @var{textfile} will be reloaded before each frame.
Be sure to update it atomically, or it may be read partially, or even fail.
@item x
@item y
The expressions which specify the offsets where text will be drawn
within the video frame. They are relative to the top/left border of the
output image.
The default value of @var{x} and @var{y} is "0".
See below for the list of accepted constants and functions.
@end table
The parameters for @var{x} and @var{y} are expressions containing the
following constants and functions:
@table @option
@item dar
input display aspect ratio, it is the same as (@var{w} / @var{h}) * @var{sar}
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@item line_h, lh
the height of each text line
@item main_h, h, H
the input height
@item main_w, w, W
the input width
@item max_glyph_a, ascent
the maximum distance from the baseline to the highest/upper grid
coordinate used to place a glyph outline point, for all the rendered
glyphs.
It is a positive value, due to the grid's orientation with the Y axis
upwards.
@item max_glyph_d, descent
the maximum distance from the baseline to the lowest grid coordinate
used to place a glyph outline point, for all the rendered glyphs.
This is a negative value, due to the grid's orientation, with the Y axis
upwards.
@item max_glyph_h
maximum glyph height, that is the maximum height for all the glyphs
contained in the rendered text, it is equivalent to @var{ascent} -
@var{descent}.
@item max_glyph_w
maximum glyph width, that is the maximum width for all the glyphs
contained in the rendered text
@item n
the number of input frame, starting from 0
@item rand(min, max)
return a random number included between @var{min} and @var{max}
@item sar
input sample aspect ratio
@item t
timestamp expressed in seconds, NAN if the input timestamp is unknown
@item text_h, th
the height of the rendered text
@item text_w, tw
the width of the rendered text
@item x
@item y
the x and y offset coordinates where the text is drawn.
These parameters allow the @var{x} and @var{y} expressions to refer
each other, so you can for example specify @code{y=x/dar}.
@end table
If libavfilter was built with @code{--enable-fontconfig}, then
@option{fontfile} can be a fontconfig pattern or omitted.
@anchor{drawtext_expansion}
@subsection Text expansion
If @option{expansion} is set to @code{strftime},
the filter recognizes strftime() sequences in the provided text and
expands them accordingly. Check the documentation of strftime(). This
feature is deprecated.
If @option{expansion} is set to @code{none}, the text is printed verbatim.
If @option{expansion} is set to @code{normal} (which is the default),
the following expansion mechanism is used.
The backslash character '\', followed by any character, always expands to
the second character.
Sequence of the form @code{%@{...@}} are expanded. The text between the
braces is a function name, possibly followed by arguments separated by ':'.
If the arguments contain special characters or delimiters (':' or '@}'),
they should be escaped.
Note that they probably must also be escaped as the value for the
@option{text} option in the filter argument string and as the filter
argument in the filtergraph description, and possibly also for the shell,
that makes up to four levels of escaping; using a text file avoids these
problems.
The following functions are available:
@table @command
@item expr, e
The expression evaluation result.
It must take one argument specifying the expression to be evaluated,
which accepts the same constants and functions as the @var{x} and
@var{y} values. Note that not all constants should be used, for
example the text size is not known when evaluating the expression, so
the constants @var{text_w} and @var{text_h} will have an undefined
value.
@item gmtime
The time at which the filter is running, expressed in UTC.
It can accept an argument: a strftime() format string.
@item localtime
The time at which the filter is running, expressed in the local time zone.
It can accept an argument: a strftime() format string.
@item metadata
Frame metadata. It must take one argument specifying metadata key.
@item n, frame_num
The frame number, starting from 0.
@item pict_type
A 1 character description of the current picture type.
@item pts
The timestamp of the current frame, in seconds, with microsecond accuracy.
@end table
@subsection Examples
@itemize
@item
Draw "Test Text" with font FreeSerif, using the default values for the
optional parameters.
@example
drawtext="fontfile=/usr/share/fonts/truetype/freefont/FreeSerif.ttf: text='Test Text'"
@end example
@item
Draw 'Test Text' with font FreeSerif of size 24 at position x=100
and y=50 (counting from the top-left corner of the screen), text is
yellow with a red box around it. Both the text and the box have an
opacity of 20%.
@example
drawtext="fontfile=/usr/share/fonts/truetype/freefont/FreeSerif.ttf: text='Test Text':\
x=100: y=50: fontsize=24: fontcolor=yellow@@0.2: box=1: boxcolor=red@@0.2"
@end example
Note that the double quotes are not necessary if spaces are not used
within the parameter list.
@item
Show the text at the center of the video frame:
@example
drawtext="fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=(w-text_w)/2:y=(h-text_h-line_h)/2"
@end example
@item
Show a text line sliding from right to left in the last row of the video
frame. The file @file{LONG_LINE} is assumed to contain a single line
with no newlines.
@example
drawtext="fontsize=15:fontfile=FreeSerif.ttf:text=LONG_LINE:y=h-line_h:x=-50*t"
@end example
@item
Show the content of file @file{CREDITS} off the bottom of the frame and scroll up.
@example
drawtext="fontsize=20:fontfile=FreeSerif.ttf:textfile=CREDITS:y=h-20*t"
@end example
@item
Draw a single green letter "g", at the center of the input video.
The glyph baseline is placed at half screen height.
@example
drawtext="fontsize=60:fontfile=FreeSerif.ttf:fontcolor=green:text=g:x=(w-max_glyph_w)/2:y=h/2-ascent"
@end example
@item
Show text for 1 second every 3 seconds:
@example
drawtext="fontfile=FreeSerif.ttf:fontcolor=white:x=100:y=x/dar:enable=lt(mod(t\,3)\,1):text='blink'"
@end example
@item
Use fontconfig to set the font. Note that the colons need to be escaped.
@example
drawtext='fontfile=Linux Libertine O-40\:style=Semibold:text=FFmpeg'
@end example
@item
Print the date of a real-time encoding (see strftime(3)):
@example
drawtext='fontfile=FreeSans.ttf:text=%@{localtime:%a %b %d %Y@}'
@end example
@end itemize
For more information about libfreetype, check:
@url{http://www.freetype.org/}.
For more information about fontconfig, check:
@url{http://freedesktop.org/software/fontconfig/fontconfig-user.html}.
@section edgedetect
Detect and draw edges. The filter uses the Canny Edge Detection algorithm.
The filter accepts the following options:
@table @option
@item low
@item high
Set low and high threshold values used by the Canny thresholding
algorithm.
The high threshold selects the "strong" edge pixels, which are then
connected through 8-connectivity with the "weak" edge pixels selected
by the low threshold.
@var{low} and @var{high} threshold values must be choosen in the range
[0,1], and @var{low} should be lesser or equal to @var{high}.
Default value for @var{low} is @code{20/255}, and default value for @var{high}
is @code{50/255}.
@end table
Example:
@example
edgedetect=low=0.1:high=0.4
@end example
@section extractplanes
Extract color channel components from input video stream into
separate grayscale video streams.
The filter accepts the following option:
@table @option
@item planes
Set plane(s) to extract.
Available values for planes are:
@table @samp
@item y
@item u
@item v
@item a
@item r
@item g
@item b
@end table
Choosing planes not available in the input will result in an error.
That means you cannot select @code{r}, @code{g}, @code{b} planes
with @code{y}, @code{u}, @code{v} planes at same time.
@end table
@subsection Examples
@itemize
@item
Extract luma, u and v color channel component from input video frame
into 3 grayscale outputs:
@example
ffmpeg -i video.avi -filter_complex 'extractplanes=y+u+v[y][u][v]' -map '[y]' y.avi -map '[u]' u.avi -map '[v]' v.avi
@end example
@end itemize
@section fade
Apply fade-in/out effect to input video.
This filter accepts the following options:
@table @option
@item type, t
The effect type -- can be either "in" for fade-in, or "out" for a fade-out
effect.
Default is @code{in}.
@item start_frame, s
Specify the number of the start frame for starting to apply the fade
effect. Default is 0.
@item nb_frames, n
The number of frames for which the fade effect has to last. At the end of the
fade-in effect the output video will have the same intensity as the input video,
at the end of the fade-out transition the output video will be completely black.
Default is 25.
@item alpha
If set to 1, fade only alpha channel, if one exists on the input.
Default value is 0.
@item start_time, st
Specify the timestamp (in seconds) of the frame to start to apply the fade
effect. If both start_frame and start_time are specified, the fade will start at
whichever comes last. Default is 0.
@item duration, d
The number of seconds for which the fade effect has to last. At the end of the
fade-in effect the output video will have the same intensity as the input video,
at the end of the fade-out transition the output video will be completely black.
If both duration and nb_frames are specified, duration is used. Default is 0.
@end table
@subsection Examples
@itemize
@item
Fade in first 30 frames of video:
@example
fade=in:0:30
@end example
The command above is equivalent to:
@example
fade=t=in:s=0:n=30
@end example
@item
Fade out last 45 frames of a 200-frame video:
@example
fade=out:155:45
fade=type=out:start_frame=155:nb_frames=45
@end example
@item
Fade in first 25 frames and fade out last 25 frames of a 1000-frame video:
@example
fade=in:0:25, fade=out:975:25
@end example
@item
Make first 5 frames black, then fade in from frame 5-24:
@example
fade=in:5:20
@end example
@item
Fade in alpha over first 25 frames of video:
@example
fade=in:0:25:alpha=1
@end example
@item
Make first 5.5 seconds black, then fade in for 0.5 seconds:
@example
fade=t=in:st=5.5:d=0.5
@end example
@end itemize
@section field
Extract a single field from an interlaced image using stride
arithmetic to avoid wasting CPU time. The output frames are marked as
non-interlaced.
The filter accepts the following options:
@table @option
@item type
Specify whether to extract the top (if the value is @code{0} or
@code{top}) or the bottom field (if the value is @code{1} or
@code{bottom}).
@end table
@section fieldmatch
Field matching filter for inverse telecine. It is meant to reconstruct the
progressive frames from a telecined stream. The filter does not drop duplicated
frames, so to achieve a complete inverse telecine @code{fieldmatch} needs to be
followed by a decimation filter such as @ref{decimate} in the filtergraph.
The separation of the field matching and the decimation is notably motivated by
the possibility of inserting a de-interlacing filter fallback between the two.
If the source has mixed telecined and real interlaced content,
@code{fieldmatch} will not be able to match fields for the interlaced parts.
But these remaining combed frames will be marked as interlaced, and thus can be
de-interlaced by a later filter such as @ref{yadif} before decimation.
In addition to the various configuration options, @code{fieldmatch} can take an
optional second stream, activated through the @option{ppsrc} option. If
enabled, the frames reconstruction will be based on the fields and frames from
this second stream. This allows the first input to be pre-processed in order to
help the various algorithms of the filter, while keeping the output lossless
(assuming the fields are matched properly). Typically, a field-aware denoiser,
or brightness/contrast adjustments can help.
Note that this filter uses the same algorithms as TIVTC/TFM (AviSynth project)
and VIVTC/VFM (VapourSynth project). The later is a light clone of TFM from
which @code{fieldmatch} is based on. While the semantic and usage are very
close, some behaviour and options names can differ.
The filter accepts the following options:
@table @option
@item order
Specify the assumed field order of the input stream. Available values are:
@table @samp
@item auto
Auto detect parity (use FFmpeg's internal parity value).
@item bff
Assume bottom field first.
@item tff
Assume top field first.
@end table
Note that it is sometimes recommended not to trust the parity announced by the
stream.
Default value is @var{auto}.
@item mode
Set the matching mode or strategy to use. @option{pc} mode is the safest in the
sense that it won't risk creating jerkiness due to duplicate frames when
possible, but if there are bad edits or blended fields it will end up
outputting combed frames when a good match might actually exist. On the other
hand, @option{pcn_ub} mode is the most risky in terms of creating jerkiness,
but will almost always find a good frame if there is one. The other values are
all somewhere in between @option{pc} and @option{pcn_ub} in terms of risking
jerkiness and creating duplicate frames versus finding good matches in sections
with bad edits, orphaned fields, blended fields, etc.
More details about p/c/n/u/b are available in @ref{p/c/n/u/b meaning} section.
Available values are:
@table @samp
@item pc
2-way matching (p/c)
@item pc_n
2-way matching, and trying 3rd match if still combed (p/c + n)
@item pc_u
2-way matching, and trying 3rd match (same order) if still combed (p/c + u)
@item pc_n_ub
2-way matching, trying 3rd match if still combed, and trying 4th/5th matches if
still combed (p/c + n + u/b)
@item pcn
3-way matching (p/c/n)
@item pcn_ub
3-way matching, and trying 4th/5th matches if all 3 of the original matches are
detected as combed (p/c/n + u/b)
@end table
The parenthesis at the end indicate the matches that would be used for that
mode assuming @option{order}=@var{tff} (and @option{field} on @var{auto} or
@var{top}).
In terms of speed @option{pc} mode is by far the fastest and @option{pcn_ub} is
the slowest.
Default value is @var{pc_n}.
@item ppsrc
Mark the main input stream as a pre-processed input, and enable the secondary
input stream as the clean source to pick the fields from. See the filter
introduction for more details. It is similar to the @option{clip2} feature from
VFM/TFM.
Default value is @code{0} (disabled).
@item field
Set the field to match from. It is recommended to set this to the same value as
@option{order} unless you experience matching failures with that setting. In
certain circumstances changing the field that is used to match from can have a
large impact on matching performance. Available values are:
@table @samp
@item auto
Automatic (same value as @option{order}).
@item bottom
Match from the bottom field.
@item top
Match from the top field.
@end table
Default value is @var{auto}.
@item mchroma
Set whether or not chroma is included during the match comparisons. In most
cases it is recommended to leave this enabled. You should set this to @code{0}
only if your clip has bad chroma problems such as heavy rainbowing or other
artifacts. Setting this to @code{0} could also be used to speed things up at
the cost of some accuracy.
Default value is @code{1}.
@item y0
@item y1
These define an exclusion band which excludes the lines between @option{y0} and
@option{y1} from being included in the field matching decision. An exclusion
band can be used to ignore subtitles, a logo, or other things that may
interfere with the matching. @option{y0} sets the starting scan line and
@option{y1} sets the ending line; all lines in between @option{y0} and
@option{y1} (including @option{y0} and @option{y1}) will be ignored. Setting
@option{y0} and @option{y1} to the same value will disable the feature.
@option{y0} and @option{y1} defaults to @code{0}.
@item scthresh
Set the scene change detection threshold as a percentage of maximum change on
the luma plane. Good values are in the @code{[8.0, 14.0]} range. Scene change
detection is only relevant in case @option{combmatch}=@var{sc}. The range for
@option{scthresh} is @code{[0.0, 100.0]}.
Default value is @code{12.0}.
@item combmatch
When @option{combatch} is not @var{none}, @code{fieldmatch} will take into
account the combed scores of matches when deciding what match to use as the
final match. Available values are:
@table @samp
@item none
No final matching based on combed scores.
@item sc
Combed scores are only used when a scene change is detected.
@item full
Use combed scores all the time.
@end table
Default is @var{sc}.
@item combdbg
Force @code{fieldmatch} to calculate the combed metrics for certain matches and
print them. This setting is known as @option{micout} in TFM/VFM vocabulary.
Available values are:
@table @samp
@item none
No forced calculation.
@item pcn
Force p/c/n calculations.
@item pcnub
Force p/c/n/u/b calculations.
@end table
Default value is @var{none}.
@item cthresh
This is the area combing threshold used for combed frame detection. This
essentially controls how "strong" or "visible" combing must be to be detected.
Larger values mean combing must be more visible and smaller values mean combing
can be less visible or strong and still be detected. Valid settings are from
@code{-1} (every pixel will be detected as combed) to @code{255} (no pixel will
be detected as combed). This is basically a pixel difference value. A good
range is @code{[8, 12]}.
Default value is @code{9}.
@item chroma
Sets whether or not chroma is considered in the combed frame decision. Only
disable this if your source has chroma problems (rainbowing, etc.) that are
causing problems for the combed frame detection with chroma enabled. Actually,
using @option{chroma}=@var{0} is usually more reliable, except for the case
where there is chroma only combing in the source.
Default value is @code{0}.
@item blockx
@item blocky
Respectively set the x-axis and y-axis size of the window used during combed
frame detection. This has to do with the size of the area in which
@option{combpel} pixels are required to be detected as combed for a frame to be
declared combed. See the @option{combpel} parameter description for more info.
Possible values are any number that is a power of 2 starting at 4 and going up
to 512.
Default value is @code{16}.
@item combpel
The number of combed pixels inside any of the @option{blocky} by
@option{blockx} size blocks on the frame for the frame to be detected as
combed. While @option{cthresh} controls how "visible" the combing must be, this
setting controls "how much" combing there must be in any localized area (a
window defined by the @option{blockx} and @option{blocky} settings) on the
frame. Minimum value is @code{0} and maximum is @code{blocky x blockx} (at
which point no frames will ever be detected as combed). This setting is known
as @option{MI} in TFM/VFM vocabulary.
Default value is @code{80}.
@end table
@anchor{p/c/n/u/b meaning}
@subsection p/c/n/u/b meaning
@subsubsection p/c/n
We assume the following telecined stream:
@example
Top fields: 1 2 2 3 4
Bottom fields: 1 2 3 4 4
@end example
The numbers correspond to the progressive frame the fields relate to. Here, the
first two frames are progressive, the 3rd and 4th are combed, and so on.
When @code{fieldmatch} is configured to run a matching from bottom
(@option{field}=@var{bottom}) this is how this input stream get transformed:
@example
Input stream:
T 1 2 2 3 4
B 1 2 3 4 4 <-- matching reference
Matches: c c n n c
Output stream:
T 1 2 3 4 4
B 1 2 3 4 4
@end example
As a result of the field matching, we can see that some frames get duplicated.
To perform a complete inverse telecine, you need to rely on a decimation filter
after this operation. See for instance the @ref{decimate} filter.
The same operation now matching from top fields (@option{field}=@var{top})
looks like this:
@example
Input stream:
T 1 2 2 3 4 <-- matching reference
B 1 2 3 4 4
Matches: c c p p c
Output stream:
T 1 2 2 3 4
B 1 2 2 3 4
@end example
In these examples, we can see what @var{p}, @var{c} and @var{n} mean;
basically, they refer to the frame and field of the opposite parity:
@itemize
@item @var{p} matches the field of the opposite parity in the previous frame
@item @var{c} matches the field of the opposite parity in the current frame
@item @var{n} matches the field of the opposite parity in the next frame
@end itemize
@subsubsection u/b
The @var{u} and @var{b} matching are a bit special in the sense that they match
from the opposite parity flag. In the following examples, we assume that we are
currently matching the 2nd frame (Top:2, bottom:2). According to the match, a
'x' is placed above and below each matched fields.
With bottom matching (@option{field}=@var{bottom}):
@example
Match: c p n b u
x x x x x
Top 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2
Bottom 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
x x x x x
Output frames:
2 1 2 2 2
2 2 2 1 3
@end example
With top matching (@option{field}=@var{top}):
@example
Match: c p n b u
x x x x x
Top 1 2 2 1 2 2 1 2 2 1 2 2 1 2 2
Bottom 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
x x x x x
Output frames:
2 2 2 1 2
2 1 3 2 2
@end example
@subsection Examples
Simple IVTC of a top field first telecined stream:
@example
fieldmatch=order=tff:combmatch=none, decimate
@end example
Advanced IVTC, with fallback on @ref{yadif} for still combed frames:
@example
fieldmatch=order=tff:combmatch=full, yadif=deint=interlaced, decimate
@end example
@section fieldorder
Transform the field order of the input video.
This filter accepts the following options:
@table @option
@item order
Output field order. Valid values are @var{tff} for top field first or @var{bff}
for bottom field first.
@end table
Default value is @samp{tff}.
Transformation is achieved by shifting the picture content up or down
by one line, and filling the remaining line with appropriate picture content.
This method is consistent with most broadcast field order converters.
If the input video is not flagged as being interlaced, or it is already
flagged as being of the required output field order then this filter does
not alter the incoming video.
This filter is very useful when converting to or from PAL DV material,
which is bottom field first.
For example:
@example
ffmpeg -i in.vob -vf "fieldorder=bff" out.dv
@end example
@section fifo
Buffer input images and send them when they are requested.
This filter is mainly useful when auto-inserted by the libavfilter
framework.
The filter does not take parameters.
@anchor{format}
@section format
Convert the input video to one of the specified pixel formats.
Libavfilter will try to pick one that is supported for the input to
the next filter.
This filter accepts the following parameters:
@table @option
@item pix_fmts
A '|'-separated list of pixel format names, for example
"pix_fmts=yuv420p|monow|rgb24".
@end table
@subsection Examples
@itemize
@item
Convert the input video to the format @var{yuv420p}
@example
format=pix_fmts=yuv420p
@end example
Convert the input video to any of the formats in the list
@example
format=pix_fmts=yuv420p|yuv444p|yuv410p
@end example
@end itemize
@section fps
Convert the video to specified constant frame rate by duplicating or dropping
frames as necessary.
This filter accepts the following named parameters:
@table @option
@item fps
Desired output frame rate. The default is @code{25}.
@item round
Rounding method.
Possible values are:
@table @option
@item zero
zero round towards 0
@item inf
round away from 0
@item down
round towards -infinity
@item up
round towards +infinity
@item near
round to nearest
@end table
The default is @code{near}.
@item start_time
Assume the first PTS should be the given value, in seconds. This allows for
padding/trimming at the start of stream. By default, no assumption is made
about the first frame's expected PTS, so no padding or trimming is done.
For example, this could be set to 0 to pad the beginning with duplicates of
the first frame if a video stream starts after the audio stream or to trim any
frames with a negative PTS.
@end table
Alternatively, the options can be specified as a flat string:
@var{fps}[:@var{round}].
See also the @ref{setpts} filter.
@subsection Examples
@itemize
@item
A typical usage in order to set the fps to 25:
@example
fps=fps=25
@end example
@item
Sets the fps to 24, using abbreviation and rounding method to round to nearest:
@example
fps=fps=film:round=near
@end example
@end itemize
@section framestep
Select one frame every N-th frame.
This filter accepts the following option:
@table @option
@item step
Select frame after every @code{step} frames.
Allowed values are positive integers higher than 0. Default value is @code{1}.
@end table
@anchor{frei0r}
@section frei0r
Apply a frei0r effect to the input video.
To enable compilation of this filter you need to install the frei0r
header and configure FFmpeg with @code{--enable-frei0r}.
This filter accepts the following options:
@table @option
@item filter_name
The name to the frei0r effect to load. If the environment variable
@env{FREI0R_PATH} is defined, the frei0r effect is searched in each one of the
directories specified by the colon separated list in @env{FREIOR_PATH},
otherwise in the standard frei0r paths, which are in this order:
@file{HOME/.frei0r-1/lib/}, @file{/usr/local/lib/frei0r-1/},
@file{/usr/lib/frei0r-1/}.
@item filter_params
A '|'-separated list of parameters to pass to the frei0r effect.
@end table
A frei0r effect parameter can be a boolean (whose values are specified
with "y" and "n"), a double, a color (specified by the syntax
@var{R}/@var{G}/@var{B}, (@var{R}, @var{G}, and @var{B} being float
numbers from 0.0 to 1.0) or by a color description specified in the "Color"
section in the ffmpeg-utils manual), a position (specified by the syntax @var{X}/@var{Y},
@var{X} and @var{Y} being float numbers) and a string.
The number and kind of parameters depend on the loaded effect. If an
effect parameter is not specified the default value is set.
@subsection Examples
@itemize
@item
Apply the distort0r effect, set the first two double parameters:
@example
frei0r=filter_name=distort0r:filter_params=0.5|0.01
@end example
@item
Apply the colordistance effect, take a color as first parameter:
@example
frei0r=colordistance:0.2/0.3/0.4
frei0r=colordistance:violet
frei0r=colordistance:0x112233
@end example
@item
Apply the perspective effect, specify the top left and top right image
positions:
@example
frei0r=perspective:0.2/0.2|0.8/0.2
@end example
@end itemize
For more information see:
@url{http://frei0r.dyne.org}
@section geq
The filter accepts the following options:
@table @option
@item lum_expr, lum
Set the luminance expression.
@item cb_expr, cb
Set the chrominance blue expression.
@item cr_expr, cr
Set the chrominance red expression.
@item alpha_expr, a
Set the alpha expression.
@item red_expr, r
Set the red expression.
@item green_expr, g
Set the green expression.
@item blue_expr, b
Set the blue expression.
@end table
The colorspace is selected according to the specified options. If one
of the @option{lum_expr}, @option{cb_expr}, or @option{cr_expr}
options is specified, the filter will automatically select a YCbCr
colorspace. If one of the @option{red_expr}, @option{green_expr}, or
@option{blue_expr} options is specified, it will select an RGB
colorspace.
If one of the chrominance expression is not defined, it falls back on the other
one. If no alpha expression is specified it will evaluate to opaque value.
If none of chrominance expressions are specified, they will evaluate
to the luminance expression.
The expressions can use the following variables and functions:
@table @option
@item N
The sequential number of the filtered frame, starting from @code{0}.
@item X
@item Y
The coordinates of the current sample.
@item W
@item H
The width and height of the image.
@item SW
@item SH
Width and height scale depending on the currently filtered plane. It is the
ratio between the corresponding luma plane number of pixels and the current
plane ones. E.g. for YUV4:2:0 the values are @code{1,1} for the luma plane, and
@code{0.5,0.5} for chroma planes.
@item T
Time of the current frame, expressed in seconds.
@item p(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the current
plane.
@item lum(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the luminance
plane.
@item cb(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the
blue-difference chroma plane. Return 0 if there is no such plane.
@item cr(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the
red-difference chroma plane. Return 0 if there is no such plane.
@item r(x, y)
@item g(x, y)
@item b(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the
red/green/blue component. Return 0 if there is no such component.
@item alpha(x, y)
Return the value of the pixel at location (@var{x},@var{y}) of the alpha
plane. Return 0 if there is no such plane.
@end table
For functions, if @var{x} and @var{y} are outside the area, the value will be
automatically clipped to the closer edge.
@subsection Examples
@itemize
@item
Flip the image horizontally:
@example
geq=p(W-X\,Y)
@end example
@item
Generate a bidimensional sine wave, with angle @code{PI/3} and a
wavelength of 100 pixels:
@example
geq=128 + 100*sin(2*(PI/100)*(cos(PI/3)*(X-50*T) + sin(PI/3)*Y)):128:128
@end example
@item
Generate a fancy enigmatic moving light:
@example
nullsrc=s=256x256,geq=random(1)/hypot(X-cos(N*0.07)*W/2-W/2\,Y-sin(N*0.09)*H/2-H/2)^2*1000000*sin(N*0.02):128:128
@end example
@item
Generate a quick emboss effect:
@example
format=gray,geq=lum_expr='(p(X,Y)+(256-p(X-4,Y-4)))/2'
@end example
@item
Modify RGB components depending on pixel position:
@example
geq=r='X/W*r(X,Y)':g='(1-X/W)*g(X,Y)':b='(H-Y)/H*b(X,Y)'
@end example
@end itemize
@section gradfun
Fix the banding artifacts that are sometimes introduced into nearly flat
regions by truncation to 8bit color depth.
Interpolate the gradients that should go where the bands are, and
dither them.
This filter is designed for playback only. Do not use it prior to
lossy compression, because compression tends to lose the dither and
bring back the bands.
This filter accepts the following options:
@table @option
@item strength
The maximum amount by which the filter will change any one pixel. Also the
threshold for detecting nearly flat regions. Acceptable values range from .51 to
64, default value is 1.2, out-of-range values will be clipped to the valid
range.
@item radius
The neighborhood to fit the gradient to. A larger radius makes for smoother
gradients, but also prevents the filter from modifying the pixels near detailed
regions. Acceptable values are 8-32, default value is 16, out-of-range values
will be clipped to the valid range.
@end table
Alternatively, the options can be specified as a flat string:
@var{strength}[:@var{radius}]
@subsection Examples
@itemize
@item
Apply the filter with a @code{3.5} strength and radius of @code{8}:
@example
gradfun=3.5:8
@end example
@item
Specify radius, omitting the strength (which will fall-back to the default
value):
@example
gradfun=radius=8
@end example
@end itemize
@anchor{haldclut}
@section haldclut
Apply a Hald CLUT to a video stream.
First input is the video stream to process, and second one is the Hald CLUT.
The Hald CLUT input can be a simple picture or a complete video stream.
The filter accepts the following options:
@table @option
@item shortest
Force termination when the shortest input terminates. Default is @code{0}.
@item repeatlast
Continue applying the last CLUT after the end of the stream. A value of
@code{0} disable the filter after the last frame of the CLUT is reached.
Default is @code{1}.
@end table
@code{haldclut} also has the same interpolation options as @ref{lut3d} (both
filters share the same internals).
More information about the Hald CLUT can be found on Eskil Steenberg's website
(Hald CLUT author) at @url{http://www.quelsolaar.com/technology/clut.html}.
@subsection Workflow examples
@subsubsection Hald CLUT video stream
Generate an identity Hald CLUT stream altered with various effects:
@example
ffmpeg -f lavfi -i @ref{haldclutsrc}=8 -vf "hue=H=2*PI*t:s=sin(2*PI*t)+1, curves=cross_process" -t 10 -c:v ffv1 clut.nut
@end example
Note: make sure you use a lossless codec.
Then use it with @code{haldclut} to apply it on some random stream:
@example
ffmpeg -f lavfi -i mandelbrot -i clut.nut -filter_complex '[0][1] haldclut' -t 20 mandelclut.mkv
@end example
The Hald CLUT will be applied to the 10 first seconds (duration of
@file{clut.nut}), then the latest picture of that CLUT stream will be applied
to the remaining frames of the @code{mandelbrot} stream.
@subsubsection Hald CLUT with preview
A Hald CLUT is supposed to be a squared image of @code{Level*Level*Level} by
@code{Level*Level*Level} pixels. For a given Hald CLUT, FFmpeg will select the
biggest possible square starting at the top left of the picture. The remaining
padding pixels (bottom or right) will be ignored. This area can be used to add
a preview of the Hald CLUT.
Typically, the following generated Hald CLUT will be supported by the
@code{haldclut} filter:
@example
ffmpeg -f lavfi -i @ref{haldclutsrc}=8 -vf "
pad=iw+320 [padded_clut];
smptebars=s=320x256, split [a][b];
[padded_clut][a] overlay=W-320:h, curves=color_negative [main];
[main][b] overlay=W-320" -frames:v 1 clut.png
@end example
It contains the original and a preview of the effect of the CLUT: SMPTE color
bars are displayed on the right-top, and below the same color bars processed by
the color changes.
Then, the effect of this Hald CLUT can be visualized with:
@example
ffplay input.mkv -vf "movie=clut.png, [in] haldclut"
@end example
@section hflip
Flip the input video horizontally.
For example to horizontally flip the input video with @command{ffmpeg}:
@example
ffmpeg -i in.avi -vf "hflip" out.avi
@end example
@section histeq
This filter applies a global color histogram equalization on a
per-frame basis.
It can be used to correct video that has a compressed range of pixel
intensities. The filter redistributes the pixel intensities to
equalize their distribution across the intensity range. It may be
viewed as an "automatically adjusting contrast filter". This filter is
useful only for correcting degraded or poorly captured source
video.
The filter accepts the following options:
@table @option
@item strength
Determine the amount of equalization to be applied. As the strength
is reduced, the distribution of pixel intensities more-and-more
approaches that of the input frame. The value must be a float number
in the range [0,1] and defaults to 0.200.
@item intensity
Set the maximum intensity that can generated and scale the output
values appropriately. The strength should be set as desired and then
the intensity can be limited if needed to avoid washing-out. The value
must be a float number in the range [0,1] and defaults to 0.210.
@item antibanding
Set the antibanding level. If enabled the filter will randomly vary
the luminance of output pixels by a small amount to avoid banding of
the histogram. Possible values are @code{none}, @code{weak} or
@code{strong}. It defaults to @code{none}.
@end table
@section histogram
Compute and draw a color distribution histogram for the input video.
The computed histogram is a representation of distribution of color components
in an image.
The filter accepts the following options:
@table @option
@item mode
Set histogram mode.
It accepts the following values:
@table @samp
@item levels
standard histogram that display color components distribution in an image.
Displays color graph for each color component. Shows distribution
of the Y, U, V, A or R, G, B components, depending on input format,
in current frame. Bellow each graph is color component scale meter.
@item color
chroma values in vectorscope, if brighter more such chroma values are
distributed in an image.
Displays chroma values (U/V color placement) in two dimensional graph
(which is called a vectorscope). It can be used to read of the hue and
saturation of the current frame. At a same time it is a histogram.
The whiter a pixel in the vectorscope, the more pixels of the input frame
correspond to that pixel (that is the more pixels have this chroma value).
The V component is displayed on the horizontal (X) axis, with the leftmost
side being V = 0 and the rightmost side being V = 255.
The U component is displayed on the vertical (Y) axis, with the top
representing U = 0 and the bottom representing U = 255.
The position of a white pixel in the graph corresponds to the chroma value
of a pixel of the input clip. So the graph can be used to read of the
hue (color flavor) and the saturation (the dominance of the hue in the color).
As the hue of a color changes, it moves around the square. At the center of
the square, the saturation is zero, which means that the corresponding pixel
has no color. If you increase the amount of a specific color, while leaving
the other colors unchanged, the saturation increases, and you move towards
the edge of the square.
@item color2
chroma values in vectorscope, similar as @code{color} but actual chroma values
are displayed.
@item waveform
per row/column color component graph. In row mode graph in the left side represents
color component value 0 and right side represents value = 255. In column mode top
side represents color component value = 0 and bottom side represents value = 255.
@end table
Default value is @code{levels}.
@item level_height
Set height of level in @code{levels}. Default value is @code{200}.
Allowed range is [50, 2048].
@item scale_height
Set height of color scale in @code{levels}. Default value is @code{12}.
Allowed range is [0, 40].
@item step
Set step for @code{waveform} mode. Smaller values are useful to find out how much
of same luminance values across input rows/columns are distributed.
Default value is @code{10}. Allowed range is [1, 255].
@item waveform_mode
Set mode for @code{waveform}. Can be either @code{row}, or @code{column}.
Default is @code{row}.
@item waveform_mirror
Set mirroring mode for @code{waveform}. @code{0} means unmirrored, @code{1}
means mirrored. In mirrored mode, higher values will be represented on the left
side for @code{row} mode and at the top for @code{column} mode. Default is
@code{0} (unmirrored).
@item display_mode
Set display mode for @code{waveform} and @code{levels}.
It accepts the following values:
@table @samp
@item parade
Display separate graph for the color components side by side in
@code{row} waveform mode or one below other in @code{column} waveform mode
for @code{waveform} histogram mode. For @code{levels} histogram mode
per color component graphs are placed one bellow other.
This display mode in @code{waveform} histogram mode makes it easy to spot
color casts in the highlights and shadows of an image, by comparing the
contours of the top and the bottom of each waveform.
Since whites, grays, and blacks are characterized by
exactly equal amounts of red, green, and blue, neutral areas of the
picture should display three waveforms of roughly equal width/height.
If not, the correction is easy to make by making adjustments to level the
three waveforms.
@item overlay
Presents information that's identical to that in the @code{parade}, except
that the graphs representing color components are superimposed directly
over one another.
This display mode in @code{waveform} histogram mode can make it easier to spot
the relative differences or similarities in overlapping areas of the color
components that are supposed to be identical, such as neutral whites, grays,
or blacks.
@end table
Default is @code{parade}.
@item levels_mode
Set mode for @code{levels}. Can be either @code{linear}, or @code{logarithmic}.
Default is @code{linear}.
@end table
@subsection Examples
@itemize
@item
Calculate and draw histogram:
@example
ffplay -i input -vf histogram
@end example
@end itemize
@anchor{hqdn3d}
@section hqdn3d
High precision/quality 3d denoise filter. This filter aims to reduce
image noise producing smooth images and making still images really
still. It should enhance compressibility.
It accepts the following optional parameters:
@table @option
@item luma_spatial
a non-negative float number which specifies spatial luma strength,
defaults to 4.0
@item chroma_spatial
a non-negative float number which specifies spatial chroma strength,
defaults to 3.0*@var{luma_spatial}/4.0
@item luma_tmp
a float number which specifies luma temporal strength, defaults to
6.0*@var{luma_spatial}/4.0
@item chroma_tmp
a float number which specifies chroma temporal strength, defaults to
@var{luma_tmp}*@var{chroma_spatial}/@var{luma_spatial}
@end table
@section hue
Modify the hue and/or the saturation of the input.
This filter accepts the following options:
@table @option
@item h
Specify the hue angle as a number of degrees. It accepts an expression,
and defaults to "0".
@item s
Specify the saturation in the [-10,10] range. It accepts an expression and
defaults to "1".
@item H
Specify the hue angle as a number of radians. It accepts an
expression, and defaults to "0".
@item b
Specify the brightness in the [-10,10] range. It accepts an expression and
defaults to "0".
@end table
@option{h} and @option{H} are mutually exclusive, and can't be
specified at the same time.
The @option{b}, @option{h}, @option{H} and @option{s} option values are
expressions containing the following constants:
@table @option
@item n
frame count of the input frame starting from 0
@item pts
presentation timestamp of the input frame expressed in time base units
@item r
frame rate of the input video, NAN if the input frame rate is unknown
@item t
timestamp expressed in seconds, NAN if the input timestamp is unknown
@item tb
time base of the input video
@end table
@subsection Examples
@itemize
@item
Set the hue to 90 degrees and the saturation to 1.0:
@example
hue=h=90:s=1
@end example
@item
Same command but expressing the hue in radians:
@example
hue=H=PI/2:s=1
@end example
@item
Rotate hue and make the saturation swing between 0
and 2 over a period of 1 second:
@example
hue="H=2*PI*t: s=sin(2*PI*t)+1"
@end example
@item
Apply a 3 seconds saturation fade-in effect starting at 0:
@example
hue="s=min(t/3\,1)"
@end example
The general fade-in expression can be written as:
@example
hue="s=min(0\, max((t-START)/DURATION\, 1))"
@end example
@item
Apply a 3 seconds saturation fade-out effect starting at 5 seconds:
@example
hue="s=max(0\, min(1\, (8-t)/3))"
@end example
The general fade-out expression can be written as:
@example
hue="s=max(0\, min(1\, (START+DURATION-t)/DURATION))"
@end example
@end itemize
@subsection Commands
This filter supports the following commands:
@table @option
@item b
@item s
@item h
@item H
Modify the hue and/or the saturation and/or brightness of the input video.
The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current
value.
@end table
@section idet
Detect video interlacing type.
This filter tries to detect if the input is interlaced or progressive,
top or bottom field first.
The filter accepts the following options:
@table @option
@item intl_thres
Set interlacing threshold.
@item prog_thres
Set progressive threshold.
@end table
@section il
Deinterleave or interleave fields.
This filter allows to process interlaced images fields without
deinterlacing them. Deinterleaving splits the input frame into 2
fields (so called half pictures). Odd lines are moved to the top
half of the output image, even lines to the bottom half.
You can process (filter) them independently and then re-interleave them.
The filter accepts the following options:
@table @option
@item luma_mode, l
@item chroma_mode, c
@item alpha_mode, a
Available values for @var{luma_mode}, @var{chroma_mode} and
@var{alpha_mode} are:
@table @samp
@item none
Do nothing.
@item deinterleave, d
Deinterleave fields, placing one above the other.
@item interleave, i
Interleave fields. Reverse the effect of deinterleaving.
@end table
Default value is @code{none}.
@item luma_swap, ls
@item chroma_swap, cs
@item alpha_swap, as
Swap luma/chroma/alpha fields. Exchange even & odd lines. Default value is @code{0}.
@end table
@section interlace
Simple interlacing filter from progressive contents. This interleaves upper (or
lower) lines from odd frames with lower (or upper) lines from even frames,
halving the frame rate and preserving image height.
@example
Original Original New Frame
Frame 'j' Frame 'j+1' (tff)
========== =========== ==================
Line 0 --------------------> Frame 'j' Line 0
Line 1 Line 1 ----> Frame 'j+1' Line 1
Line 2 ---------------------> Frame 'j' Line 2
Line 3 Line 3 ----> Frame 'j+1' Line 3
... ... ...
New Frame + 1 will be generated by Frame 'j+2' and Frame 'j+3' and so on
@end example
It accepts the following optional parameters:
@table @option
@item scan
determines whether the interlaced frame is taken from the even (tff - default)
or odd (bff) lines of the progressive frame.
@item lowpass
Enable (default) or disable the vertical lowpass filter to avoid twitter
interlacing and reduce moire patterns.
@end table
@section kerndeint
Deinterlace input video by applying Donald Graft's adaptive kernel
deinterling. Work on interlaced parts of a video to produce
progressive frames.
The description of the accepted parameters follows.
@table @option
@item thresh
Set the threshold which affects the filter's tolerance when
determining if a pixel line must be processed. It must be an integer
in the range [0,255] and defaults to 10. A value of 0 will result in
applying the process on every pixels.
@item map
Paint pixels exceeding the threshold value to white if set to 1.
Default is 0.
@item order
Set the fields order. Swap fields if set to 1, leave fields alone if
0. Default is 0.
@item sharp
Enable additional sharpening if set to 1. Default is 0.
@item twoway
Enable twoway sharpening if set to 1. Default is 0.
@end table
@subsection Examples
@itemize
@item
Apply default values:
@example
kerndeint=thresh=10:map=0:order=0:sharp=0:twoway=0
@end example
@item
Enable additional sharpening:
@example
kerndeint=sharp=1
@end example
@item
Paint processed pixels in white:
@example
kerndeint=map=1
@end example
@end itemize
@anchor{lut3d}
@section lut3d
Apply a 3D LUT to an input video.
The filter accepts the following options:
@table @option
@item file
Set the 3D LUT file name.
Currently supported formats:
@table @samp
@item 3dl
AfterEffects
@item cube
Iridas
@item dat
DaVinci
@item m3d
Pandora
@end table
@item interp
Select interpolation mode.
Available values are:
@table @samp
@item nearest
Use values from the nearest defined point.
@item trilinear
Interpolate values using the 8 points defining a cube.
@item tetrahedral
Interpolate values using a tetrahedron.
@end table
@end table
@section lut, lutrgb, lutyuv
Compute a look-up table for binding each pixel component input value
to an output value, and apply it to input video.
@var{lutyuv} applies a lookup table to a YUV input video, @var{lutrgb}
to an RGB input video.
These filters accept the following options:
@table @option
@item c0
set first pixel component expression
@item c1
set second pixel component expression
@item c2
set third pixel component expression
@item c3
set fourth pixel component expression, corresponds to the alpha component
@item r
set red component expression
@item g
set green component expression
@item b
set blue component expression
@item a
alpha component expression
@item y
set Y/luminance component expression
@item u
set U/Cb component expression
@item v
set V/Cr component expression
@end table
Each of them specifies the expression to use for computing the lookup table for
the corresponding pixel component values.
The exact component associated to each of the @var{c*} options depends on the
format in input.
The @var{lut} filter requires either YUV or RGB pixel formats in input,
@var{lutrgb} requires RGB pixel formats in input, and @var{lutyuv} requires YUV.
The expressions can contain the following constants and functions:
@table @option
@item w
@item h
the input width and height
@item val
input value for the pixel component
@item clipval
the input value clipped in the @var{minval}-@var{maxval} range
@item maxval
maximum value for the pixel component
@item minval
minimum value for the pixel component
@item negval
the negated value for the pixel component value clipped in the
@var{minval}-@var{maxval} range , it corresponds to the expression
"maxval-clipval+minval"
@item clip(val)
the computed value in @var{val} clipped in the
@var{minval}-@var{maxval} range
@item gammaval(gamma)
the computed gamma correction value of the pixel component value
clipped in the @var{minval}-@var{maxval} range, corresponds to the
expression
"pow((clipval-minval)/(maxval-minval)\,@var{gamma})*(maxval-minval)+minval"
@end table
All expressions default to "val".
@subsection Examples
@itemize
@item
Negate input video:
@example
lutrgb="r=maxval+minval-val:g=maxval+minval-val:b=maxval+minval-val"
lutyuv="y=maxval+minval-val:u=maxval+minval-val:v=maxval+minval-val"
@end example
The above is the same as:
@example
lutrgb="r=negval:g=negval:b=negval"
lutyuv="y=negval:u=negval:v=negval"
@end example
@item
Negate luminance:
@example
lutyuv=y=negval
@end example
@item
Remove chroma components, turns the video into a graytone image:
@example
lutyuv="u=128:v=128"
@end example
@item
Apply a luma burning effect:
@example
lutyuv="y=2*val"
@end example
@item
Remove green and blue components:
@example
lutrgb="g=0:b=0"
@end example
@item
Set a constant alpha channel value on input:
@example
format=rgba,lutrgb=a="maxval-minval/2"
@end example
@item
Correct luminance gamma by a 0.5 factor:
@example
lutyuv=y=gammaval(0.5)
@end example
@item
Discard least significant bits of luma:
@example
lutyuv=y='bitand(val, 128+64+32)'
@end example
@end itemize
@section mergeplanes
Merge color channel components from several video streams.
The filter accepts up to 4 input streams, and merge selected input
planes to the output video.
This filter accepts the following options:
@table @option
@item mapping
Set input to output plane mapping. Default is @code{0}.
The mappings is specified as a bitmap. It should be specified as a
hexadecimal number in the form 0xAa[Bb[Cc[Dd]]]. 'Aa' describes the
mapping for the first plane of the output stream. 'A' sets the number of
the input stream to use (from 0 to 3), and 'a' the plane number of the
corresponding input to use (from 0 to 3). The rest of the mappings is
similar, 'Bb' describes the mapping for the output stream second
plane, 'Cc' describes the mapping for the output stream third plane and
'Dd' describes the mapping for the output stream fourth plane.
@item format
Set output pixel format. Default is @code{yuva444p}.
@end table
@subsection Examples
@itemize
@item
Merge three gray video streams of same width and height into single video stream:
@example
[a0][a1][a2]mergeplanes=0x001020:yuv444p
@end example
@item
Merge 1st yuv444p stream and 2nd gray video stream into yuva444p video stream:
@example
[a0][a1]mergeplanes=0x00010210:yuva444p
@end example
@item
Swap Y and A plane in yuva444p stream:
@example
format=yuva444p,mergeplanes=0x03010200:yuva444p
@end example
@item
Swap U and V plane in yuv420p stream:
@example
format=yuv420p,mergeplanes=0x000201:yuv420p
@end example
@item
Cast a rgb24 clip to yuv444p:
@example
format=rgb24,mergeplanes=0x000102:yuv444p
@end example
@end itemize
@section mcdeint
Apply motion-compensation deinterlacing.
It needs one field per frame as input and must thus be used together
with yadif=1/3 or equivalent.
This filter accepts the following options:
@table @option
@item mode
Set the deinterlacing mode.
It accepts one of the following values:
@table @samp
@item fast
@item medium
@item slow
use iterative motion estimation
@item extra_slow
like @samp{slow}, but use multiple reference frames.
@end table
Default value is @samp{fast}.
@item parity
Set the picture field parity assumed for the input video. It must be
one of the following values:
@table @samp
@item 0, tff
assume top field first
@item 1, bff
assume bottom field first
@end table
Default value is @samp{bff}.
@item qp
Set per-block quantization parameter (QP) used by the internal
encoder.
Higher values should result in a smoother motion vector field but less
optimal individual vectors. Default value is 1.
@end table
@section mp
Apply an MPlayer filter to the input video.
This filter provides a wrapper around some of the filters of
MPlayer/MEncoder.
This wrapper is considered experimental. Some of the wrapped filters
may not work properly and we may drop support for them, as they will
be implemented natively into FFmpeg. Thus you should avoid
depending on them when writing portable scripts.
The filter accepts the parameters:
@var{filter_name}[:=]@var{filter_params}
@var{filter_name} is the name of a supported MPlayer filter,
@var{filter_params} is a string containing the parameters accepted by
the named filter.
The list of the currently supported filters follows:
@table @var
@item eq2
@item eq
@item fspp
@item ilpack
@item pp7
@item softpulldown
@item uspp
@end table
The parameter syntax and behavior for the listed filters are the same
of the corresponding MPlayer filters. For detailed instructions check
the "VIDEO FILTERS" section in the MPlayer manual.
@subsection Examples
@itemize
@item
Adjust gamma, brightness, contrast:
@example
mp=eq2=1.0:2:0.5
@end example
@end itemize
See also mplayer(1), @url{http://www.mplayerhq.hu/}.
@section mpdecimate
Drop frames that do not differ greatly from the previous frame in
order to reduce frame rate.
The main use of this filter is for very-low-bitrate encoding
(e.g. streaming over dialup modem), but it could in theory be used for
fixing movies that were inverse-telecined incorrectly.
A description of the accepted options follows.
@table @option
@item max
Set the maximum number of consecutive frames which can be dropped (if
positive), or the minimum interval between dropped frames (if
negative). If the value is 0, the frame is dropped unregarding the
number of previous sequentially dropped frames.
Default value is 0.
@item hi
@item lo
@item frac
Set the dropping threshold values.
Values for @option{hi} and @option{lo} are for 8x8 pixel blocks and
represent actual pixel value differences, so a threshold of 64
corresponds to 1 unit of difference for each pixel, or the same spread
out differently over the block.
A frame is a candidate for dropping if no 8x8 blocks differ by more
than a threshold of @option{hi}, and if no more than @option{frac} blocks (1
meaning the whole image) differ by more than a threshold of @option{lo}.
Default value for @option{hi} is 64*12, default value for @option{lo} is
64*5, and default value for @option{frac} is 0.33.
@end table
@section negate
Negate input video.
This filter accepts an integer in input, if non-zero it negates the
alpha component (if available). The default value in input is 0.
@section noformat
Force libavfilter not to use any of the specified pixel formats for the
input to the next filter.
This filter accepts the following parameters:
@table @option
@item pix_fmts
A '|'-separated list of pixel format names, for example
"pix_fmts=yuv420p|monow|rgb24".
@end table
@subsection Examples
@itemize
@item
Force libavfilter to use a format different from @var{yuv420p} for the
input to the vflip filter:
@example
noformat=pix_fmts=yuv420p,vflip
@end example
@item
Convert the input video to any of the formats not contained in the list:
@example
noformat=yuv420p|yuv444p|yuv410p
@end example
@end itemize
@section noise
Add noise on video input frame.
The filter accepts the following options:
@table @option
@item all_seed
@item c0_seed
@item c1_seed
@item c2_seed
@item c3_seed
Set noise seed for specific pixel component or all pixel components in case
of @var{all_seed}. Default value is @code{123457}.
@item all_strength, alls
@item c0_strength, c0s
@item c1_strength, c1s
@item c2_strength, c2s
@item c3_strength, c3s
Set noise strength for specific pixel component or all pixel components in case
@var{all_strength}. Default value is @code{0}. Allowed range is [0, 100].
@item all_flags, allf
@item c0_flags, c0f
@item c1_flags, c1f
@item c2_flags, c2f
@item c3_flags, c3f
Set pixel component flags or set flags for all components if @var{all_flags}.
Available values for component flags are:
@table @samp
@item a
averaged temporal noise (smoother)
@item p
mix random noise with a (semi)regular pattern
@item t
temporal noise (noise pattern changes between frames)
@item u
uniform noise (gaussian otherwise)
@end table
@end table
@subsection Examples
Add temporal and uniform noise to input video:
@example
noise=alls=20:allf=t+u
@end example
@section null
Pass the video source unchanged to the output.
@section ocv
Apply video transform using libopencv.
To enable this filter install libopencv library and headers and
configure FFmpeg with @code{--enable-libopencv}.
This filter accepts the following parameters:
@table @option
@item filter_name
The name of the libopencv filter to apply.
@item filter_params
The parameters to pass to the libopencv filter. If not specified the default
values are assumed.
@end table
Refer to the official libopencv documentation for more precise
information:
@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
Follows the list of supported libopencv filters.
@anchor{dilate}
@subsection dilate
Dilate an image by using a specific structuring element.
This filter corresponds to the libopencv function @code{cvDilate}.
It accepts the parameters: @var{struct_el}|@var{nb_iterations}.
@var{struct_el} represents a structuring element, and has the syntax:
@var{cols}x@var{rows}+@var{anchor_x}x@var{anchor_y}/@var{shape}
@var{cols} and @var{rows} represent the number of columns and rows of
the structuring element, @var{anchor_x} and @var{anchor_y} the anchor
point, and @var{shape} the shape for the structuring element, and
can be one of the values "rect", "cross", "ellipse", "custom".
If the value for @var{shape} is "custom", it must be followed by a
string of the form "=@var{filename}". The file with name
@var{filename} is assumed to represent a binary image, with each
printable character corresponding to a bright pixel. When a custom
@var{shape} is used, @var{cols} and @var{rows} are ignored, the number
or columns and rows of the read file are assumed instead.
The default value for @var{struct_el} is "3x3+0x0/rect".
@var{nb_iterations} specifies the number of times the transform is
applied to the image, and defaults to 1.
Follow some example:
@example
# use the default values
ocv=dilate
# dilate using a structuring element with a 5x5 cross, iterate two times
ocv=filter_name=dilate:filter_params=5x5+2x2/cross|2
# read the shape from the file diamond.shape, iterate two times
# the file diamond.shape may contain a pattern of characters like this:
# *
# ***
# *****
# ***
# *
# the specified cols and rows are ignored (but not the anchor point coordinates)
ocv=dilate:0x0+2x2/custom=diamond.shape|2
@end example
@subsection erode
Erode an image by using a specific structuring element.
This filter corresponds to the libopencv function @code{cvErode}.
The filter accepts the parameters: @var{struct_el}:@var{nb_iterations},
with the same syntax and semantics as the @ref{dilate} filter.
@subsection smooth
Smooth the input video.
The filter takes the following parameters:
@var{type}|@var{param1}|@var{param2}|@var{param3}|@var{param4}.
@var{type} is the type of smooth filter to apply, and can be one of
the following values: "blur", "blur_no_scale", "median", "gaussian",
"bilateral". The default value is "gaussian".
@var{param1}, @var{param2}, @var{param3}, and @var{param4} are
parameters whose meanings depend on smooth type. @var{param1} and
@var{param2} accept integer positive values or 0, @var{param3} and
@var{param4} accept float values.
The default value for @var{param1} is 3, the default value for the
other parameters is 0.
These parameters correspond to the parameters assigned to the
libopencv function @code{cvSmooth}.
@anchor{overlay}
@section overlay
Overlay one video on top of another.
It takes two inputs and one output, the first input is the "main"
video on which the second input is overlayed.
This filter accepts the following parameters:
A description of the accepted options follows.
@table @option
@item x
@item y
Set the expression for the x and y coordinates of the overlayed video
on the main video. Default value is "0" for both expressions. In case
the expression is invalid, it is set to a huge value (meaning that the
overlay will not be displayed within the output visible area).
@item eval
Set when the expressions for @option{x}, and @option{y} are evaluated.
It accepts the following values:
@table @samp
@item init
only evaluate expressions once during the filter initialization or
when a command is processed
@item frame
evaluate expressions for each incoming frame
@end table
Default value is @samp{frame}.
@item shortest
If set to 1, force the output to terminate when the shortest input
terminates. Default value is 0.
@item format
Set the format for the output video.
It accepts the following values:
@table @samp
@item yuv420
force YUV420 output
@item yuv444
force YUV444 output
@item rgb
force RGB output
@end table
Default value is @samp{yuv420}.
@item rgb @emph{(deprecated)}
If set to 1, force the filter to accept inputs in the RGB
color space. Default value is 0. This option is deprecated, use
@option{format} instead.
@item repeatlast
If set to 1, force the filter to draw the last overlay frame over the
main input until the end of the stream. A value of 0 disables this
behavior. Default value is 1.
@end table
The @option{x}, and @option{y} expressions can contain the following
parameters.
@table @option
@item main_w, W
@item main_h, H
main input width and height
@item overlay_w, w
@item overlay_h, h
overlay input width and height
@item x
@item y
the computed values for @var{x} and @var{y}. They are evaluated for
each new frame.
@item hsub
@item vsub
horizontal and vertical chroma subsample values of the output
format. For example for the pixel format "yuv422p" @var{hsub} is 2 and
@var{vsub} is 1.
@item n
the number of input frame, starting from 0
@item pos
the position in the file of the input frame, NAN if unknown
@item t
timestamp expressed in seconds, NAN if the input timestamp is unknown
@end table
Note that the @var{n}, @var{pos}, @var{t} variables are available only
when evaluation is done @emph{per frame}, and will evaluate to NAN
when @option{eval} is set to @samp{init}.
Be aware that frames are taken from each input video in timestamp
order, hence, if their initial timestamps differ, it is a good idea
to pass the two inputs through a @var{setpts=PTS-STARTPTS} filter to
have them begin in the same zero timestamp, as it does the example for
the @var{movie} filter.
You can chain together more overlays but you should test the
efficiency of such approach.
@subsection Commands
This filter supports the following commands:
@table @option
@item x
@item y
Modify the x and y of the overlay input.
The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current
value.
@end table
@subsection Examples
@itemize
@item
Draw the overlay at 10 pixels from the bottom right corner of the main
video:
@example
overlay=main_w-overlay_w-10:main_h-overlay_h-10
@end example
Using named options the example above becomes:
@example
overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10
@end example
@item
Insert a transparent PNG logo in the bottom left corner of the input,
using the @command{ffmpeg} tool with the @code{-filter_complex} option:
@example
ffmpeg -i input -i logo -filter_complex 'overlay=10:main_h-overlay_h-10' output
@end example
@item
Insert 2 different transparent PNG logos (second logo on bottom
right corner) using the @command{ffmpeg} tool:
@example
ffmpeg -i input -i logo1 -i logo2 -filter_complex 'overlay=x=10:y=H-h-10,overlay=x=W-w-10:y=H-h-10' output
@end example
@item
Add a transparent color layer on top of the main video, @code{WxH}
must specify the size of the main input to the overlay filter:
@example
color=color=red@@.3:size=WxH [over]; [in][over] overlay [out]
@end example
@item
Play an original video and a filtered version (here with the deshake
filter) side by side using the @command{ffplay} tool:
@example
ffplay input.avi -vf 'split[a][b]; [a]pad=iw*2:ih[src]; [b]deshake[filt]; [src][filt]overlay=w'
@end example
The above command is the same as:
@example
ffplay input.avi -vf 'split[b], pad=iw*2[src], [b]deshake, [src]overlay=w'
@end example
@item
Make a sliding overlay appearing from the left to the right top part of the
screen starting since time 2:
@example
overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0
@end example
@item
Compose output by putting two input videos side to side:
@example
ffmpeg -i left.avi -i right.avi -filter_complex "
nullsrc=size=200x100 [background];
[0:v] setpts=PTS-STARTPTS, scale=100x100 [left];
[1:v] setpts=PTS-STARTPTS, scale=100x100 [right];
[background][left] overlay=shortest=1 [background+left];
[background+left][right] overlay=shortest=1:x=100 [left+right]
"
@end example
@item
Chain several overlays in cascade:
@example
nullsrc=s=200x200 [bg];
testsrc=s=100x100, split=4 [in0][in1][in2][in3];
[in0] lutrgb=r=0, [bg] overlay=0:0 [mid0];
[in1] lutrgb=g=0, [mid0] overlay=100:0 [mid1];
[in2] lutrgb=b=0, [mid1] overlay=0:100 [mid2];
[in3] null, [mid2] overlay=100:100 [out0]
@end example
@end itemize
@section owdenoise
Apply Overcomplete Wavelet denoiser.
The filter accepts the following options:
@table @option
@item depth
Set depth.
Larger depth values will denoise lower frequency components more, but
slow down filtering.
Must be an int in the range 8-16, default is @code{8}.
@item luma_strength, ls
Set luma strength.
Must be a double value in the range 0-1000, default is @code{1.0}.
@item chroma_strength, cs
Set chroma strength.
Must be a double value in the range 0-1000, default is @code{1.0}.
@end table
@section pad
Add paddings to the input image, and place the original input at the
given coordinates @var{x}, @var{y}.
This filter accepts the following parameters:
@table @option
@item width, w
@item height, h
Specify an expression for the size of the output image with the
paddings added. If the value for @var{width} or @var{height} is 0, the
corresponding input size is used for the output.
The @var{width} expression can reference the value set by the
@var{height} expression, and vice versa.
The default value of @var{width} and @var{height} is 0.
@item x
@item y
Specify an expression for the offsets where to place the input image
in the padded area with respect to the top/left border of the output
image.
The @var{x} expression can reference the value set by the @var{y}
expression, and vice versa.
The default value of @var{x} and @var{y} is 0.
@item color
Specify the color of the padded area. For the syntax of this option,
check the "Color" section in the ffmpeg-utils manual.
The default value of @var{color} is "black".
@end table
The value for the @var{width}, @var{height}, @var{x}, and @var{y}
options are expressions containing the following constants:
@table @option
@item in_w
@item in_h
the input video width and height
@item iw
@item ih
same as @var{in_w} and @var{in_h}
@item out_w
@item out_h
the output width and height, that is the size of the padded area as
specified by the @var{width} and @var{height} expressions
@item ow
@item oh
same as @var{out_w} and @var{out_h}
@item x
@item y
x and y offsets as specified by the @var{x} and @var{y}
expressions, or NAN if not yet specified
@item a
same as @var{iw} / @var{ih}
@item sar
input sample aspect ratio
@item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table
@subsection Examples
@itemize
@item
Add paddings with color "violet" to the input video. Output video
size is 640x480, the top-left corner of the input video is placed at
column 0, row 40:
@example
pad=640:480:0:40:violet
@end example
The example above is equivalent to the following command:
@example
pad=width=640:height=480:x=0:y=40:color=violet
@end example
@item
Pad the input to get an output with dimensions increased by 3/2,
and put the input video at the center of the padded area:
@example
pad="3/2*iw:3/2*ih:(ow-iw)/2:(oh-ih)/2"
@end example
@item
Pad the input to get a squared output with size equal to the maximum
value between the input width and height, and put the input video at
the center of the padded area:
@example
pad="max(iw\,ih):ow:(ow-iw)/2:(oh-ih)/2"
@end example
@item
Pad the input to get a final w/h ratio of 16:9:
@example
pad="ih*16/9:ih:(ow-iw)/2:(oh-ih)/2"
@end example
@item
In case of anamorphic video, in order to set the output display aspect
correctly, it is necessary to use @var{sar} in the expression,
according to the relation:
@example
(ih * X / ih) * sar = output_dar
X = output_dar / sar
@end example
Thus the previous example needs to be modified to:
@example
pad="ih*16/9/sar:ih:(ow-iw)/2:(oh-ih)/2"
@end example
@item
Double output size and put the input video in the bottom-right
corner of the output padded area:
@example
pad="2*iw:2*ih:ow-iw:oh-ih"
@end example
@end itemize
@section perspective
Correct perspective of video not recorded perpendicular to the screen.
A description of the accepted parameters follows.
@table @option
@item x0
@item y0
@item x1
@item y1
@item x2
@item y2
@item x3
@item y3
Set coordinates expression for top left, top right, bottom left and bottom right corners.
Default values are @code{0:0:W:0:0:H:W:H} with which perspective will remain unchanged.
The expressions can use the following variables:
@table @option
@item W
@item H
the width and height of video frame.
@end table
@item interpolation
Set interpolation for perspective correction.
It accepts the following values:
@table @samp
@item linear
@item cubic
@end table
Default value is @samp{linear}.
@end table
@section phase
Delay interlaced video by one field time so that the field order changes.
The intended use is to fix PAL movies that have been captured with the
opposite field order to the film-to-video transfer.
A description of the accepted parameters follows.
@table @option
@item mode
Set phase mode.
It accepts the following values:
@table @samp
@item t
Capture field order top-first, transfer bottom-first.
Filter will delay the bottom field.
@item b
Capture field order bottom-first, transfer top-first.
Filter will delay the top field.
@item p
Capture and transfer with the same field order. This mode only exists
for the documentation of the other options to refer to, but if you
actually select it, the filter will faithfully do nothing.
@item a
Capture field order determined automatically by field flags, transfer
opposite.
Filter selects among @samp{t} and @samp{b} modes on a frame by frame
basis using field flags. If no field information is available,
then this works just like @samp{u}.
@item u
Capture unknown or varying, transfer opposite.
Filter selects among @samp{t} and @samp{b} on a frame by frame basis by
analyzing the images and selecting the alternative that produces best
match between the fields.
@item T
Capture top-first, transfer unknown or varying.
Filter selects among @samp{t} and @samp{p} using image analysis.
@item B
Capture bottom-first, transfer unknown or varying.
Filter selects among @samp{b} and @samp{p} using image analysis.
@item A
Capture determined by field flags, transfer unknown or varying.
Filter selects among @samp{t}, @samp{b} and @samp{p} using field flags and
image analysis. If no field information is available, then this works just
like @samp{U}. This is the default mode.
@item U
Both capture and transfer unknown or varying.
Filter selects among @samp{t}, @samp{b} and @samp{p} using image analysis only.
@end table
@end table
@section pixdesctest
Pixel format descriptor test filter, mainly useful for internal
testing. The output video should be equal to the input video.
For example:
@example
format=monow, pixdesctest
@end example
can be used to test the monowhite pixel format descriptor definition.
@section pp
Enable the specified chain of postprocessing subfilters using libpostproc. This
library should be automatically selected with a GPL build (@code{--enable-gpl}).
Subfilters must be separated by '/' and can be disabled by prepending a '-'.
Each subfilter and some options have a short and a long name that can be used
interchangeably, i.e. dr/dering are the same.
The filters accept the following options:
@table @option
@item subfilters
Set postprocessing subfilters string.
@end table
All subfilters share common options to determine their scope:
@table @option
@item a/autoq
Honor the quality commands for this subfilter.
@item c/chrom
Do chrominance filtering, too (default).
@item y/nochrom
Do luminance filtering only (no chrominance).
@item n/noluma
Do chrominance filtering only (no luminance).
@end table
These options can be appended after the subfilter name, separated by a '|'.
Available subfilters are:
@table @option
@item hb/hdeblock[|difference[|flatness]]
Horizontal deblocking filter
@table @option
@item difference
Difference factor where higher values mean more deblocking (default: @code{32}).
@item flatness
Flatness threshold where lower values mean more deblocking (default: @code{39}).
@end table
@item vb/vdeblock[|difference[|flatness]]
Vertical deblocking filter
@table @option
@item difference
Difference factor where higher values mean more deblocking (default: @code{32}).
@item flatness
Flatness threshold where lower values mean more deblocking (default: @code{39}).
@end table
@item ha/hadeblock[|difference[|flatness]]
Accurate horizontal deblocking filter
@table @option
@item difference
Difference factor where higher values mean more deblocking (default: @code{32}).
@item flatness
Flatness threshold where lower values mean more deblocking (default: @code{39}).
@end table
@item va/vadeblock[|difference[|flatness]]
Accurate vertical deblocking filter
@table @option
@item difference
Difference factor where higher values mean more deblocking (default: @code{32}).
@item flatness
Flatness threshold where lower values mean more deblocking (default: @code{39}).
@end table
@end table
The horizontal and vertical deblocking filters share the difference and
flatness values so you cannot set different horizontal and vertical
thresholds.
@table @option
@item h1/x1hdeblock
Experimental horizontal deblocking filter
@item v1/x1vdeblock
Experimental vertical deblocking filter
@item dr/dering
Deringing filter
@item tn/tmpnoise[|threshold1[|threshold2[|threshold3]]], temporal noise reducer
@table @option
@item threshold1
larger -> stronger filtering
@item threshold2
larger -> stronger filtering
@item threshold3
larger -> stronger filtering
@end table
@item al/autolevels[:f/fullyrange], automatic brightness / contrast correction
@table @option
@item f/fullyrange
Stretch luminance to @code{0-255}.
@end table
@item lb/linblenddeint
Linear blend deinterlacing filter that deinterlaces the given block by
filtering all lines with a @code{(1 2 1)} filter.
@item li/linipoldeint
Linear interpolating deinterlacing filter that deinterlaces the given block by
linearly interpolating every second line.
@item ci/cubicipoldeint
Cubic interpolating deinterlacing filter deinterlaces the given block by
cubically interpolating every second line.
@item md/mediandeint
Median deinterlacing filter that deinterlaces the given block by applying a
median filter to every second line.
@item fd/ffmpegdeint
FFmpeg deinterlacing filter that deinterlaces the given block by filtering every
second line with a @code{(-1 4 2 4 -1)} filter.
@item l5/lowpass5
Vertically applied FIR lowpass deinterlacing filter that deinterlaces the given
block by filtering all lines with a @code{(-1 2 6 2 -1)} filter.
@item fq/forceQuant[|quantizer]
Overrides the quantizer table from the input with the constant quantizer you
specify.
@table @option
@item quantizer
Quantizer to use
@end table
@item de/default
Default pp filter combination (@code{hb|a,vb|a,dr|a})
@item fa/fast
Fast pp filter combination (@code{h1|a,v1|a,dr|a})
@item ac
High quality pp filter combination (@code{ha|a|128|7,va|a,dr|a})
@end table
@subsection Examples
@itemize
@item
Apply horizontal and vertical deblocking, deringing and automatic
brightness/contrast:
@example
pp=hb/vb/dr/al
@end example
@item
Apply default filters without brightness/contrast correction:
@example
pp=de/-al
@end example
@item
Apply default filters and temporal denoiser:
@example
pp=default/tmpnoise|1|2|3
@end example
@item
Apply deblocking on luminance only, and switch vertical deblocking on or off
automatically depending on available CPU time:
@example
pp=hb|y/vb|a
@end example
@end itemize
@section psnr
Obtain the average, maximum and minimum PSNR (Peak Signal to Noise
Ratio) between two input videos.
This filter takes in input two input videos, the first input is
considered the "main" source and is passed unchanged to the
output. The second input is used as a "reference" video for computing
the PSNR.
Both video inputs must have the same resolution and pixel format for
this filter to work correctly. Also it assumes that both inputs
have the same number of frames, which are compared one by one.
The obtained average PSNR is printed through the logging system.
The filter stores the accumulated MSE (mean squared error) of each
frame, and at the end of the processing it is averaged across all frames
equally, and the following formula is applied to obtain the PSNR:
@example
PSNR = 10*log10(MAX^2/MSE)
@end example
Where MAX is the average of the maximum values of each component of the
image.
The description of the accepted parameters follows.
@table @option
@item stats_file, f
If specified the filter will use the named file to save the PSNR of
each individual frame.
@end table
The file printed if @var{stats_file} is selected, contains a sequence of
key/value pairs of the form @var{key}:@var{value} for each compared
couple of frames.
A description of each shown parameter follows:
@table @option
@item n
sequential number of the input frame, starting from 1
@item mse_avg
Mean Square Error pixel-by-pixel average difference of the compared
frames, averaged over all the image components.
@item mse_y, mse_u, mse_v, mse_r, mse_g, mse_g, mse_a
Mean Square Error pixel-by-pixel average difference of the compared
frames for the component specified by the suffix.
@item psnr_y, psnr_u, psnr_v, psnr_r, psnr_g, psnr_b, psnr_a
Peak Signal to Noise ratio of the compared frames for the component
specified by the suffix.
@end table
For example:
@example
movie=ref_movie.mpg, setpts=PTS-STARTPTS [main];
[main][ref] psnr="stats_file=stats.log" [out]
@end example
On this example the input file being processed is compared with the
reference file @file{ref_movie.mpg}. The PSNR of each individual frame
is stored in @file{stats.log}.
@section pullup
Pulldown reversal (inverse telecine) filter, capable of handling mixed
hard-telecine, 24000/1001 fps progressive, and 30000/1001 fps progressive
content.
The pullup filter is designed to take advantage of future context in making
its decisions. This filter is stateless in the sense that it does not lock
onto a pattern to follow, but it instead looks forward to the following
fields in order to identify matches and rebuild progressive frames.
To produce content with an even framerate, insert the fps filter after
pullup, use @code{fps=24000/1001} if the input frame rate is 29.97fps,
@code{fps=24} for 30fps and the (rare) telecined 25fps input.
The filter accepts the following options:
@table @option
@item jl
@item jr
@item jt
@item jb
These options set the amount of "junk" to ignore at the left, right, top, and
bottom of the image, respectively. Left and right are in units of 8 pixels,
while top and bottom are in units of 2 lines.
The default is 8 pixels on each side.
@item sb
Set the strict breaks. Setting this option to 1 will reduce the chances of
filter generating an occasional mismatched frame, but it may also cause an
excessive number of frames to be dropped during high motion sequences.
Conversely, setting it to -1 will make filter match fields more easily.
This may help processing of video where there is slight blurring between
the fields, but may also cause there to be interlaced frames in the output.
Default value is @code{0}.
@item mp
Set the metric plane to use. It accepts the following values:
@table @samp
@item l
Use luma plane.
@item u
Use chroma blue plane.
@item v
Use chroma red plane.
@end table
This option may be set to use chroma plane instead of the default luma plane
for doing filter's computations. This may improve accuracy on very clean
source material, but more likely will decrease accuracy, especially if there
is chroma noise (rainbow effect) or any grayscale video.
The main purpose of setting @option{mp} to a chroma plane is to reduce CPU
load and make pullup usable in realtime on slow machines.
@end table
For best results (without duplicated frames in the output file) it is
necessary to change the output frame rate. For example, to inverse
telecine NTSC input:
@example
ffmpeg -i input -vf pullup -r 24000/1001 ...
@end example
@section removelogo
Suppress a TV station logo, using an image file to determine which
pixels comprise the logo. It works by filling in the pixels that
comprise the logo with neighboring pixels.
The filter accepts the following options:
@table @option
@item filename, f
Set the filter bitmap file, which can be any image format supported by
libavformat. The width and height of the image file must match those of the
video stream being processed.
@end table
Pixels in the provided bitmap image with a value of zero are not
considered part of the logo, non-zero pixels are considered part of
the logo. If you use white (255) for the logo and black (0) for the
rest, you will be safe. For making the filter bitmap, it is
recommended to take a screen capture of a black frame with the logo
visible, and then using a threshold filter followed by the erode
filter once or twice.
If needed, little splotches can be fixed manually. Remember that if
logo pixels are not covered, the filter quality will be much
reduced. Marking too many pixels as part of the logo does not hurt as
much, but it will increase the amount of blurring needed to cover over
the image and will destroy more information than necessary, and extra
pixels will slow things down on a large logo.
@section rotate
Rotate video by an arbitrary angle expressed in radians.
The filter accepts the following options:
A description of the optional parameters follows.
@table @option
@item angle, a
Set an expression for the angle by which to rotate the input video
clockwise, expressed as a number of radians. A negative value will
result in a counter-clockwise rotation. By default it is set to "0".
This expression is evaluated for each frame.
@item out_w, ow
Set the output width expression, default value is "iw".
This expression is evaluated just once during configuration.
@item out_h, oh
Set the output height expression, default value is "ih".
This expression is evaluated just once during configuration.
@item bilinear
Enable bilinear interpolation if set to 1, a value of 0 disables
it. Default value is 1.
@item fillcolor, c
Set the color used to fill the output area not covered by the rotated
image. For the generalsyntax of this option, check the "Color" section in the
ffmpeg-utils manual. If the special value "none" is selected then no
background is printed (useful for example if the background is never shown).
Default value is "black".
@end table
The expressions for the angle and the output size can contain the
following constants and functions:
@table @option
@item n
sequential number of the input frame, starting from 0. It is always NAN
before the first frame is filtered.
@item t
time in seconds of the input frame, it is set to 0 when the filter is
configured. It is always NAN before the first frame is filtered.
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@item in_w, iw
@item in_h, ih
the input video width and heigth
@item out_w, ow
@item out_h, oh
the output width and heigth, that is the size of the padded area as
specified by the @var{width} and @var{height} expressions
@item rotw(a)
@item roth(a)
the minimal width/height required for completely containing the input
video rotated by @var{a} radians.
These are only available when computing the @option{out_w} and
@option{out_h} expressions.
@end table
@subsection Examples
@itemize
@item
Rotate the input by PI/6 radians clockwise:
@example
rotate=PI/6
@end example
@item
Rotate the input by PI/6 radians counter-clockwise:
@example
rotate=-PI/6
@end example
@item
Apply a constant rotation with period T, starting from an angle of PI/3:
@example
rotate=PI/3+2*PI*t/T
@end example
@item
Make the input video rotation oscillating with a period of T
seconds and an amplitude of A radians:
@example
rotate=A*sin(2*PI/T*t)
@end example
@item
Rotate the video, output size is choosen so that the whole rotating
input video is always completely contained in the output:
@example
rotate='2*PI*t:ow=hypot(iw,ih):oh=ow'
@end example
@item
Rotate the video, reduce the output size so that no background is ever
shown:
@example
rotate=2*PI*t:ow='min(iw,ih)/sqrt(2)':oh=ow:c=none
@end example
@end itemize
@subsection Commands
The filter supports the following commands:
@table @option
@item a, angle
Set the angle expression.
The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current
value.
@end table
@section sab
Apply Shape Adaptive Blur.
The filter accepts the following options:
@table @option
@item luma_radius, lr
Set luma blur filter strength, must be a value in range 0.1-4.0, default
value is 1.0. A greater value will result in a more blurred image, and
in slower processing.
@item luma_pre_filter_radius, lpfr
Set luma pre-filter radius, must be a value in the 0.1-2.0 range, default
value is 1.0.
@item luma_strength, ls
Set luma maximum difference between pixels to still be considered, must
be a value in the 0.1-100.0 range, default value is 1.0.
@item chroma_radius, cr
Set chroma blur filter strength, must be a value in range 0.1-4.0. A
greater value will result in a more blurred image, and in slower
processing.
@item chroma_pre_filter_radius, cpfr
Set chroma pre-filter radius, must be a value in the 0.1-2.0 range.
@item chroma_strength, cs
Set chroma maximum difference between pixels to still be considered,
must be a value in the 0.1-100.0 range.
@end table
Each chroma option value, if not explicitly specified, is set to the
corresponding luma option value.
@section scale
Scale (resize) the input video, using the libswscale library.
The scale filter forces the output display aspect ratio to be the same
of the input, by changing the output sample aspect ratio.
If the input image format is different from the format requested by
the next filter, the scale filter will convert the input to the
requested format.
@subsection Options
The filter accepts the following options, or any of the options
supported by the libswscale scaler.
See @ref{scaler_options,,the ffmpeg-scaler manual,ffmpeg-scaler} for
the complete list of scaler options.
@table @option
@item width, w
@item height, h
Set the output video dimension expression. Default value is the input
dimension.
If the value is 0, the input width is used for the output.
If one of the values is -1, the scale filter will use a value that
maintains the aspect ratio of the input image, calculated from the
other specified dimension. If both of them are -1, the input size is
used
See below for the list of accepted constants for use in the dimension
expression.
@item interl
Set the interlacing mode. It accepts the following values:
@table @samp
@item 1
Force interlaced aware scaling.
@item 0
Do not apply interlaced scaling.
@item -1
Select interlaced aware scaling depending on whether the source frames
are flagged as interlaced or not.
@end table
Default value is @samp{0}.
@item flags
Set libswscale scaling flags. See
@ref{sws_flags,,the ffmpeg-scaler manual,ffmpeg-scaler} for the
complete list of values. If not explictly specified the filter applies
the default flags.
@item size, s
Set the video size. For the syntax of this option, check the "Video size"
section in the ffmpeg-utils manual.
@item in_color_matrix
@item out_color_matrix
Set in/output YCbCr color space type.
This allows the autodetected value to be overridden as well as allows forcing
a specific value used for the output and encoder.
If not specified, the color space type depends on the pixel format.
Possible values:
@table @samp
@item auto
Choose automatically.
@item bt709
Format conforming to International Telecommunication Union (ITU)
Recommendation BT.709.
@item fcc
Set color space conforming to the United States Federal Communications
Commission (FCC) Code of Federal Regulations (CFR) Title 47 (2003) 73.682 (a).
@item bt601
Set color space conforming to:
@itemize
@item
ITU Radiocommunication Sector (ITU-R) Recommendation BT.601
@item
ITU-R Rec. BT.470-6 (1998) Systems B, B1, and G
@item
Society of Motion Picture and Television Engineers (SMPTE) ST 170:2004
@end itemize
@item smpte240m
Set color space conforming to SMPTE ST 240:1999.
@end table
@item in_range
@item out_range
Set in/output YCbCr sample range.
This allows the autodetected value to be overridden as well as allows forcing
a specific value used for the output and encoder. If not specified, the
range depends on the pixel format. Possible values:
@table @samp
@item auto
Choose automatically.
@item jpeg/full/pc
Set full range (0-255 in case of 8-bit luma).
@item mpeg/tv
Set "MPEG" range (16-235 in case of 8-bit luma).
@end table
@item force_original_aspect_ratio
Enable decreasing or increasing output video width or height if necessary to
keep the original aspect ratio. Possible values:
@table @samp
@item disable
Scale the video as specified and disable this feature.
@item decrease
The output video dimensions will automatically be decreased if needed.
@item increase
The output video dimensions will automatically be increased if needed.
@end table
One useful instance of this option is that when you know a specific device's
maximum allowed resolution, you can use this to limit the output video to
that, while retaining the aspect ratio. For example, device A allows
1280x720 playback, and your video is 1920x800. Using this option (set it to
decrease) and specifying 1280x720 to the command line makes the output
1280x533.
Please note that this is a different thing than specifying -1 for @option{w}
or @option{h}, you still need to specify the output resolution for this option
to work.
@end table
The values of the @option{w} and @option{h} options are expressions
containing the following constants:
@table @var
@item in_w
@item in_h
the input width and height
@item iw
@item ih
same as @var{in_w} and @var{in_h}
@item out_w
@item out_h
the output (scaled) width and height
@item ow
@item oh
same as @var{out_w} and @var{out_h}
@item a
same as @var{iw} / @var{ih}
@item sar
input sample aspect ratio
@item dar
input display aspect ratio. Calculated from @code{(iw / ih) * sar}.
@item hsub
@item vsub
horizontal and vertical chroma subsample values. For example for the
pixel format "yuv422p" @var{hsub} is 2 and @var{vsub} is 1.
@end table
@subsection Examples
@itemize
@item
Scale the input video to a size of 200x100:
@example
scale=w=200:h=100
@end example
This is equivalent to:
@example
scale=200:100
@end example
or:
@example
scale=200x100
@end example
@item
Specify a size abbreviation for the output size:
@example
scale=qcif
@end example
which can also be written as:
@example
scale=size=qcif
@end example
@item
Scale the input to 2x:
@example
scale=w=2*iw:h=2*ih
@end example
@item
The above is the same as:
@example
scale=2*in_w:2*in_h
@end example
@item
Scale the input to 2x with forced interlaced scaling:
@example
scale=2*iw:2*ih:interl=1
@end example
@item
Scale the input to half size:
@example
scale=w=iw/2:h=ih/2
@end example
@item
Increase the width, and set the height to the same size:
@example
scale=3/2*iw:ow
@end example
@item
Seek for Greek harmony:
@example
scale=iw:1/PHI*iw
scale=ih*PHI:ih
@end example
@item
Increase the height, and set the width to 3/2 of the height:
@example
scale=w=3/2*oh:h=3/5*ih
@end example
@item
Increase the size, but make the size a multiple of the chroma
subsample values:
@example
scale="trunc(3/2*iw/hsub)*hsub:trunc(3/2*ih/vsub)*vsub"
@end example
@item
Increase the width to a maximum of 500 pixels, keep the same input
aspect ratio:
@example
scale=w='min(500\, iw*3/2):h=-1'
@end example
@end itemize
@section separatefields
The @code{separatefields} takes a frame-based video input and splits
each frame into its components fields, producing a new half height clip
with twice the frame rate and twice the frame count.
This filter use field-dominance information in frame to decide which
of each pair of fields to place first in the output.
If it gets it wrong use @ref{setfield} filter before @code{separatefields} filter.
@section setdar, setsar
The @code{setdar} filter sets the Display Aspect Ratio for the filter
output video.
This is done by changing the specified Sample (aka Pixel) Aspect
Ratio, according to the following equation:
@example
@var{DAR} = @var{HORIZONTAL_RESOLUTION} / @var{VERTICAL_RESOLUTION} * @var{SAR}
@end example
Keep in mind that the @code{setdar} filter does not modify the pixel
dimensions of the video frame. Also the display aspect ratio set by
this filter may be changed by later filters in the filterchain,
e.g. in case of scaling or if another "setdar" or a "setsar" filter is
applied.
The @code{setsar} filter sets the Sample (aka Pixel) Aspect Ratio for
the filter output video.
Note that as a consequence of the application of this filter, the
output display aspect ratio will change according to the equation
above.
Keep in mind that the sample aspect ratio set by the @code{setsar}
filter may be changed by later filters in the filterchain, e.g. if
another "setsar" or a "setdar" filter is applied.
The filters accept the following options:
@table @option
@item r, ratio, dar (@code{setdar} only), sar (@code{setsar} only)
Set the aspect ratio used by the filter.
The parameter can be a floating point number string, an expression, or
a string of the form @var{num}:@var{den}, where @var{num} and
@var{den} are the numerator and denominator of the aspect ratio. If
the parameter is not specified, it is assumed the value "0".
In case the form "@var{num}:@var{den}" is used, the @code{:} character
should be escaped.
@item max
Set the maximum integer value to use for expressing numerator and
denominator when reducing the expressed aspect ratio to a rational.
Default value is @code{100}.
@end table
@subsection Examples
@itemize
@item
To change the display aspect ratio to 16:9, specify one of the following:
@example
setdar=dar=1.77777
setdar=dar=16/9
setdar=dar=1.77777
@end example
@item
To change the sample aspect ratio to 10:11, specify:
@example
setsar=sar=10/11
@end example
@item
To set a display aspect ratio of 16:9, and specify a maximum integer value of
1000 in the aspect ratio reduction, use the command:
@example
setdar=ratio=16/9:max=1000
@end example
@end itemize
@anchor{setfield}
@section setfield
Force field for the output video frame.
The @code{setfield} filter marks the interlace type field for the
output frames. It does not change the input frame, but only sets the
corresponding property, which affects how the frame is treated by
following filters (e.g. @code{fieldorder} or @code{yadif}).
The filter accepts the following options:
@table @option
@item mode
Available values are:
@table @samp
@item auto
Keep the same field property.
@item bff
Mark the frame as bottom-field-first.
@item tff
Mark the frame as top-field-first.
@item prog
Mark the frame as progressive.
@end table
@end table
@section showinfo
Show a line containing various information for each input video frame.
The input video is not modified.
The shown line contains a sequence of key/value pairs of the form
@var{key}:@var{value}.
A description of each shown parameter follows:
@table @option
@item n
sequential number of the input frame, starting from 0
@item pts
Presentation TimeStamp of the input frame, expressed as a number of
time base units. The time base unit depends on the filter input pad.
@item pts_time
Presentation TimeStamp of the input frame, expressed as a number of
seconds
@item pos
position of the frame in the input stream, -1 if this information in
unavailable and/or meaningless (for example in case of synthetic video)
@item fmt
pixel format name
@item sar
sample aspect ratio of the input frame, expressed in the form
@var{num}/@var{den}
@item s
size of the input frame. For the syntax of this option, check the "Video size"
section in the ffmpeg-utils manual.
@item i
interlaced mode ("P" for "progressive", "T" for top field first, "B"
for bottom field first)
@item iskey
1 if the frame is a key frame, 0 otherwise
@item type
picture type of the input frame ("I" for an I-frame, "P" for a
P-frame, "B" for a B-frame, "?" for unknown type).
Check also the documentation of the @code{AVPictureType} enum and of
the @code{av_get_picture_type_char} function defined in
@file{libavutil/avutil.h}.
@item checksum
Adler-32 checksum (printed in hexadecimal) of all the planes of the input frame
@item plane_checksum
Adler-32 checksum (printed in hexadecimal) of each plane of the input frame,
expressed in the form "[@var{c0} @var{c1} @var{c2} @var{c3}]"
@end table
@anchor{smartblur}
@section smartblur
Blur the input video without impacting the outlines.
The filter accepts the following options:
@table @option
@item luma_radius, lr
Set the luma radius. The option value must be a float number in
the range [0.1,5.0] that specifies the variance of the gaussian filter
used to blur the image (slower if larger). Default value is 1.0.
@item luma_strength, ls
Set the luma strength. The option value must be a float number
in the range [-1.0,1.0] that configures the blurring. A value included
in [0.0,1.0] will blur the image whereas a value included in
[-1.0,0.0] will sharpen the image. Default value is 1.0.
@item luma_threshold, lt
Set the luma threshold used as a coefficient to determine
whether a pixel should be blurred or not. The option value must be an
integer in the range [-30,30]. A value of 0 will filter all the image,
a value included in [0,30] will filter flat areas and a value included
in [-30,0] will filter edges. Default value is 0.
@item chroma_radius, cr
Set the chroma radius. The option value must be a float number in
the range [0.1,5.0] that specifies the variance of the gaussian filter
used to blur the image (slower if larger). Default value is 1.0.
@item chroma_strength, cs
Set the chroma strength. The option value must be a float number
in the range [-1.0,1.0] that configures the blurring. A value included
in [0.0,1.0] will blur the image whereas a value included in
[-1.0,0.0] will sharpen the image. Default value is 1.0.
@item chroma_threshold, ct
Set the chroma threshold used as a coefficient to determine
whether a pixel should be blurred or not. The option value must be an
integer in the range [-30,30]. A value of 0 will filter all the image,
a value included in [0,30] will filter flat areas and a value included
in [-30,0] will filter edges. Default value is 0.
@end table
If a chroma option is not explicitly set, the corresponding luma value
is set.
@section stereo3d
Convert between different stereoscopic image formats.
The filters accept the following options:
@table @option
@item in
Set stereoscopic image format of input.
Available values for input image formats are:
@table @samp
@item sbsl
side by side parallel (left eye left, right eye right)
@item sbsr
side by side crosseye (right eye left, left eye right)
@item sbs2l
side by side parallel with half width resolution
(left eye left, right eye right)
@item sbs2r
side by side crosseye with half width resolution
(right eye left, left eye right)
@item abl
above-below (left eye above, right eye below)
@item abr
above-below (right eye above, left eye below)
@item ab2l
above-below with half height resolution
(left eye above, right eye below)
@item ab2r
above-below with half height resolution
(right eye above, left eye below)
@item al
alternating frames (left eye first, right eye second)
@item ar
alternating frames (right eye first, left eye second)
Default value is @samp{sbsl}.
@end table
@item out
Set stereoscopic image format of output.
Available values for output image formats are all the input formats as well as:
@table @samp
@item arbg
anaglyph red/blue gray
(red filter on left eye, blue filter on right eye)
@item argg
anaglyph red/green gray
(red filter on left eye, green filter on right eye)
@item arcg
anaglyph red/cyan gray
(red filter on left eye, cyan filter on right eye)
@item arch
anaglyph red/cyan half colored
(red filter on left eye, cyan filter on right eye)
@item arcc
anaglyph red/cyan color
(red filter on left eye, cyan filter on right eye)
@item arcd
anaglyph red/cyan color optimized with the least squares projection of dubois
(red filter on left eye, cyan filter on right eye)
@item agmg
anaglyph green/magenta gray
(green filter on left eye, magenta filter on right eye)
@item agmh
anaglyph green/magenta half colored
(green filter on left eye, magenta filter on right eye)
@item agmc
anaglyph green/magenta colored
(green filter on left eye, magenta filter on right eye)
@item agmd
anaglyph green/magenta color optimized with the least squares projection of dubois
(green filter on left eye, magenta filter on right eye)
@item aybg
anaglyph yellow/blue gray
(yellow filter on left eye, blue filter on right eye)
@item aybh
anaglyph yellow/blue half colored
(yellow filter on left eye, blue filter on right eye)
@item aybc
anaglyph yellow/blue colored
(yellow filter on left eye, blue filter on right eye)
@item aybd
anaglyph yellow/blue color optimized with the least squares projection of dubois
(yellow filter on left eye, blue filter on right eye)
@item irl
interleaved rows (left eye has top row, right eye starts on next row)
@item irr
interleaved rows (right eye has top row, left eye starts on next row)
@item ml
mono output (left eye only)
@item mr
mono output (right eye only)
@end table
Default value is @samp{arcd}.
@end table
@subsection Examples
@itemize
@item
Convert input video from side by side parallel to anaglyph yellow/blue dubois:
@example
stereo3d=sbsl:aybd
@end example
@item
Convert input video from above bellow (left eye above, right eye below) to side by side crosseye.
@example
stereo3d=abl:sbsr
@end example
@end itemize
@section spp
Apply a simple postprocessing filter that compresses and decompresses the image
at several (or - in the case of @option{quality} level @code{6} - all) shifts
and average the results.
The filter accepts the following options:
@table @option
@item quality
Set quality. This option defines the number of levels for averaging. It accepts
an integer in the range 0-6. If set to @code{0}, the filter will have no
effect. A value of @code{6} means the higher quality. For each increment of
that value the speed drops by a factor of approximately 2. Default value is
@code{3}.
@item qp
Force a constant quantization parameter. If not set, the filter will use the QP
from the video stream (if available).
@item mode
Set thresholding mode. Available modes are:
@table @samp
@item hard
Set hard thresholding (default).
@item soft
Set soft thresholding (better de-ringing effect, but likely blurrier).
@end table
@item use_bframe_qp
Enable the use of the QP from the B-Frames if set to @code{1}. Using this
option may cause flicker since the B-Frames have often larger QP. Default is
@code{0} (not enabled).
@end table
@anchor{subtitles}
@section subtitles
Draw subtitles on top of input video using the libass library.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-libass}. This filter also requires a build with libavcodec and
libavformat to convert the passed subtitles file to ASS (Advanced Substation
Alpha) subtitles format.
The filter accepts the following options:
@table @option
@item filename, f
Set the filename of the subtitle file to read. It must be specified.
@item original_size
Specify the size of the original video, the video for which the ASS file
was composed. For the syntax of this option, check the "Video size" section in
the ffmpeg-utils manual. Due to a misdesign in ASS aspect ratio arithmetic,
this is necessary to correctly scale the fonts if the aspect ratio has been
changed.
@item charenc
Set subtitles input character encoding. @code{subtitles} filter only. Only
useful if not UTF-8.
@end table
If the first key is not specified, it is assumed that the first value
specifies the @option{filename}.
For example, to render the file @file{sub.srt} on top of the input
video, use the command:
@example
subtitles=sub.srt
@end example
which is equivalent to:
@example
subtitles=filename=sub.srt
@end example
@section super2xsai
Scale the input by 2x and smooth using the Super2xSaI (Scale and
Interpolate) pixel art scaling algorithm.
Useful for enlarging pixel art images without reducing sharpness.
@section swapuv
Swap U & V plane.
@section telecine
Apply telecine process to the video.
This filter accepts the following options:
@table @option
@item first_field
@table @samp
@item top, t
top field first
@item bottom, b
bottom field first
The default value is @code{top}.
@end table
@item pattern
A string of numbers representing the pulldown pattern you wish to apply.
The default value is @code{23}.
@end table
@example
Some typical patterns:
NTSC output (30i):
27.5p: 32222
24p: 23 (classic)
24p: 2332 (preferred)
20p: 33
18p: 334
16p: 3444
PAL output (25i):
27.5p: 12222
24p: 222222222223 ("Euro pulldown")
16.67p: 33
16p: 33333334
@end example
@section thumbnail
Select the most representative frame in a given sequence of consecutive frames.
The filter accepts the following options:
@table @option
@item n
Set the frames batch size to analyze; in a set of @var{n} frames, the filter
will pick one of them, and then handle the next batch of @var{n} frames until
the end. Default is @code{100}.
@end table
Since the filter keeps track of the whole frames sequence, a bigger @var{n}
value will result in a higher memory usage, so a high value is not recommended.
@subsection Examples
@itemize
@item
Extract one picture each 50 frames:
@example
thumbnail=50
@end example
@item
Complete example of a thumbnail creation with @command{ffmpeg}:
@example
ffmpeg -i in.avi -vf thumbnail,scale=300:200 -frames:v 1 out.png
@end example
@end itemize
@section tile
Tile several successive frames together.
The filter accepts the following options:
@table @option
@item layout
Set the grid size (i.e. the number of lines and columns). For the syntax of
this option, check the "Video size" section in the ffmpeg-utils manual.
@item nb_frames
Set the maximum number of frames to render in the given area. It must be less
than or equal to @var{w}x@var{h}. The default value is @code{0}, meaning all
the area will be used.
@item margin
Set the outer border margin in pixels.
@item padding
Set the inner border thickness (i.e. the number of pixels between frames). For
more advanced padding options (such as having different values for the edges),
refer to the pad video filter.
@item color
Specify the color of the unused areaFor the syntax of this option, check the
"Color" section in the ffmpeg-utils manual. The default value of @var{color}
is "black".
@end table
@subsection Examples
@itemize
@item
Produce 8x8 PNG tiles of all keyframes (@option{-skip_frame nokey}) in a movie:
@example
ffmpeg -skip_frame nokey -i file.avi -vf 'scale=128:72,tile=8x8' -an -vsync 0 keyframes%03d.png
@end example
The @option{-vsync 0} is necessary to prevent @command{ffmpeg} from
duplicating each output frame to accomodate the originally detected frame
rate.
@item
Display @code{5} pictures in an area of @code{3x2} frames,
with @code{7} pixels between them, and @code{2} pixels of initial margin, using
mixed flat and named options:
@example
tile=3x2:nb_frames=5:padding=7:margin=2
@end example
@end itemize
@section tinterlace
Perform various types of temporal field interlacing.
Frames are counted starting from 1, so the first input frame is
considered odd.
The filter accepts the following options:
@table @option
@item mode
Specify the mode of the interlacing. This option can also be specified
as a value alone. See below for a list of values for this option.
Available values are:
@table @samp
@item merge, 0
Move odd frames into the upper field, even into the lower field,
generating a double height frame at half frame rate.
@item drop_odd, 1
Only output even frames, odd frames are dropped, generating a frame with
unchanged height at half frame rate.
@item drop_even, 2
Only output odd frames, even frames are dropped, generating a frame with
unchanged height at half frame rate.
@item pad, 3
Expand each frame to full height, but pad alternate lines with black,
generating a frame with double height at the same input frame rate.
@item interleave_top, 4
Interleave the upper field from odd frames with the lower field from
even frames, generating a frame with unchanged height at half frame rate.
@item interleave_bottom, 5
Interleave the lower field from odd frames with the upper field from
even frames, generating a frame with unchanged height at half frame rate.
@item interlacex2, 6
Double frame rate with unchanged height. Frames are inserted each
containing the second temporal field from the previous input frame and
the first temporal field from the next input frame. This mode relies on
the top_field_first flag. Useful for interlaced video displays with no
field synchronisation.
@end table
Numeric values are deprecated but are accepted for backward
compatibility reasons.
Default mode is @code{merge}.
@item flags
Specify flags influencing the filter process.
Available value for @var{flags} is:
@table @option
@item low_pass_filter, vlfp
Enable vertical low-pass filtering in the filter.
Vertical low-pass filtering is required when creating an interlaced
destination from a progressive source which contains high-frequency
vertical detail. Filtering will reduce interlace 'twitter' and Moire
patterning.
Vertical low-pass filtering can only be enabled for @option{mode}
@var{interleave_top} and @var{interleave_bottom}.
@end table
@end table
@section transpose
Transpose rows with columns in the input video and optionally flip it.
This filter accepts the following options:
@table @option
@item dir
Specify the transposition direction.
Can assume the following values:
@table @samp
@item 0, 4, cclock_flip
Rotate by 90 degrees counterclockwise and vertically flip (default), that is:
@example
L.R L.l
. . -> . .
l.r R.r
@end example
@item 1, 5, clock
Rotate by 90 degrees clockwise, that is:
@example
L.R l.L
. . -> . .
l.r r.R
@end example
@item 2, 6, cclock
Rotate by 90 degrees counterclockwise, that is:
@example
L.R R.r
. . -> . .
l.r L.l
@end example
@item 3, 7, clock_flip
Rotate by 90 degrees clockwise and vertically flip, that is:
@example
L.R r.R
. . -> . .
l.r l.L
@end example
@end table
For values between 4-7, the transposition is only done if the input
video geometry is portrait and not landscape. These values are
deprecated, the @code{passthrough} option should be used instead.
Numerical values are deprecated, and should be dropped in favor of
symbolic constants.
@item passthrough
Do not apply the transposition if the input geometry matches the one
specified by the specified value. It accepts the following values:
@table @samp
@item none
Always apply transposition.
@item portrait
Preserve portrait geometry (when @var{height} >= @var{width}).
@item landscape
Preserve landscape geometry (when @var{width} >= @var{height}).
@end table
Default value is @code{none}.
@end table
For example to rotate by 90 degrees clockwise and preserve portrait
layout:
@example
transpose=dir=1:passthrough=portrait
@end example
The command above can also be specified as:
@example
transpose=1:portrait
@end example
@section trim
Trim the input so that the output contains one continuous subpart of the input.
This filter accepts the following options:
@table @option
@item start
Specify time of the start of the kept section, i.e. the frame with the
timestamp @var{start} will be the first frame in the output.
@item end
Specify time of the first frame that will be dropped, i.e. the frame
immediately preceding the one with the timestamp @var{end} will be the last
frame in the output.
@item start_pts
Same as @var{start}, except this option sets the start timestamp in timebase
units instead of seconds.
@item end_pts
Same as @var{end}, except this option sets the end timestamp in timebase units
instead of seconds.
@item duration
Specify maximum duration of the output.
@item start_frame
Number of the first frame that should be passed to output.
@item end_frame
Number of the first frame that should be dropped.
@end table
@option{start}, @option{end}, @option{duration} are expressed as time
duration specifications, check the "Time duration" section in the
ffmpeg-utils manual.
Note that the first two sets of the start/end options and the @option{duration}
option look at the frame timestamp, while the _frame variants simply count the
frames that pass through the filter. Also note that this filter does not modify
the timestamps. If you wish that the output timestamps start at zero, insert a
setpts filter after the trim filter.
If multiple start or end options are set, this filter tries to be greedy and
keep all the frames that match at least one of the specified constraints. To keep
only the part that matches all the constraints at once, chain multiple trim
filters.
The defaults are such that all the input is kept. So it is possible to set e.g.
just the end values to keep everything before the specified time.
Examples:
@itemize
@item
drop everything except the second minute of input
@example
ffmpeg -i INPUT -vf trim=60:120
@end example
@item
keep only the first second
@example
ffmpeg -i INPUT -vf trim=duration=1
@end example
@end itemize
@section unsharp
Sharpen or blur the input video.
It accepts the following parameters:
@table @option
@item luma_msize_x, lx
Set the luma matrix horizontal size. It must be an odd integer between
3 and 63, default value is 5.
@item luma_msize_y, ly
Set the luma matrix vertical size. It must be an odd integer between 3
and 63, default value is 5.
@item luma_amount, la
Set the luma effect strength. It can be a float number, reasonable
values lay between -1.5 and 1.5.
Negative values will blur the input video, while positive values will
sharpen it, a value of zero will disable the effect.
Default value is 1.0.
@item chroma_msize_x, cx
Set the chroma matrix horizontal size. It must be an odd integer
between 3 and 63, default value is 5.
@item chroma_msize_y, cy
Set the chroma matrix vertical size. It must be an odd integer
between 3 and 63, default value is 5.
@item chroma_amount, ca
Set the chroma effect strength. It can be a float number, reasonable
values lay between -1.5 and 1.5.
Negative values will blur the input video, while positive values will
sharpen it, a value of zero will disable the effect.
Default value is 0.0.
@item opencl
If set to 1, specify using OpenCL capabilities, only available if
FFmpeg was configured with @code{--enable-opencl}. Default value is 0.
@end table
All parameters are optional and default to the equivalent of the
string '5:5:1.0:5:5:0.0'.
@subsection Examples
@itemize
@item
Apply strong luma sharpen effect:
@example
unsharp=luma_msize_x=7:luma_msize_y=7:luma_amount=2.5
@end example
@item
Apply strong blur of both luma and chroma parameters:
@example
unsharp=7:7:-2:7:7:-2
@end example
@end itemize
@anchor{vidstabdetect}
@section vidstabdetect
Analyze video stabilization/deshaking. Perform pass 1 of 2, see
@ref{vidstabtransform} for pass 2.
This filter generates a file with relative translation and rotation
transform information about subsequent frames, which is then used by
the @ref{vidstabtransform} filter.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-libvidstab}.
This filter accepts the following options:
@table @option
@item result
Set the path to the file used to write the transforms information.
Default value is @file{transforms.trf}.
@item shakiness
Set how shaky the video is and how quick the camera is. It accepts an
integer in the range 1-10, a value of 1 means little shakiness, a
value of 10 means strong shakiness. Default value is 5.
@item accuracy
Set the accuracy of the detection process. It must be a value in the
range 1-15. A value of 1 means low accuracy, a value of 15 means high
accuracy. Default value is 9.
@item stepsize
Set stepsize of the search process. The region around minimum is
scanned with 1 pixel resolution. Default value is 6.
@item mincontrast
Set minimum contrast. Below this value a local measurement field is
discarded. Must be a floating point value in the range 0-1. Default
value is 0.3.
@item tripod
Set reference frame number for tripod mode.
If enabled, the motion of the frames is compared to a reference frame
in the filtered stream, identified by the specified number. The idea
is to compensate all movements in a more-or-less static scene and keep
the camera view absolutely still.
If set to 0, it is disabled. The frames are counted starting from 1.
@item show
Show fields and transforms in the resulting frames. It accepts an
integer in the range 0-2. Default value is 0, which disables any
visualization.
@end table
@subsection Examples
@itemize
@item
Use default values:
@example
vidstabdetect
@end example
@item
Analyze strongly shaky movie and put the results in file
@file{mytransforms.trf}:
@example
vidstabdetect=shakiness=10:accuracy=15:result="mytransforms.trf"
@end example
@item
Visualize the result of internal transformations in the resulting
video:
@example
vidstabdetect=show=1
@end example
@item
Analyze a video with medium shakiness using @command{ffmpeg}:
@example
ffmpeg -i input -vf vidstabdetect=shakiness=5:show=1 dummy.avi
@end example
@end itemize
@anchor{vidstabtransform}
@section vidstabtransform
Video stabilization/deshaking: pass 2 of 2,
see @ref{vidstabdetect} for pass 1.
Read a file with transform information for each frame and
apply/compensate them. Together with the @ref{vidstabdetect}
filter this can be used to deshake videos. See also
@url{http://public.hronopik.de/vid.stab}. It is important to also use
the unsharp filter, see below.
To enable compilation of this filter you need to configure FFmpeg with
@code{--enable-libvidstab}.
This filter accepts the following options:
@table @option
@item input
path to the file used to read the transforms (default: @file{transforms.trf})
@item smoothing
number of frames (value*2 + 1) used for lowpass filtering the camera movements
(default: 10). For example a number of 10 means that 21 frames are used
(10 in the past and 10 in the future) to smoothen the motion in the
video. A larger values leads to a smoother video, but limits the
acceleration of the camera (pan/tilt movements).
@item maxshift
maximal number of pixels to translate frames (default: -1 no limit)
@item maxangle
maximal angle in radians (degree*PI/180) to rotate frames (default: -1
no limit)
@item crop
How to deal with borders that may be visible due to movement
compensation. Available values are:
@table @samp
@item keep
keep image information from previous frame (default)
@item black
fill the border black
@end table
@item invert
@table @samp
@item 0
keep transforms normal (default)
@item 1
invert transforms
@end table
@item relative
consider transforms as
@table @samp
@item 0
absolute
@item 1
relative to previous frame (default)
@end table
@item zoom
percentage to zoom (default: 0)
@table @samp
@item >0
zoom in
@item <0
zoom out
@end table
@item optzoom
set optimal zooming to avoid borders
@table @samp
@item 0
disabled
@item 1
optimal static zoom value is determined (only very strong movements will lead to visible borders) (default)
@item 2
optimal adaptive zoom value is determined (no borders will be visible)
@end table
Note that the value given at zoom is added to the one calculated
here.
@item interpol
type of interpolation
Available values are:
@table @samp
@item no
no interpolation
@item linear
linear only horizontal
@item bilinear
linear in both directions (default)
@item bicubic
cubic in both directions (slow)
@end table
@item tripod
virtual tripod mode means that the video is stabilized such that the
camera stays stationary. Use also @code{tripod} option of
@ref{vidstabdetect}.
@table @samp
@item 0
off (default)
@item 1
virtual tripod mode: equivalent to @code{relative=0:smoothing=0}
@end table
@end table
@subsection Examples
@itemize
@item
typical call with default default values:
(note the unsharp filter which is always recommended)
@example
ffmpeg -i inp.mpeg -vf vidstabtransform,unsharp=5:5:0.8:3:3:0.4 inp_stabilized.mpeg
@end example
@item
zoom in a bit more and load transform data from a given file
@example
vidstabtransform=zoom=5:input="mytransforms.trf"
@end example
@item
smoothen the video even more
@example
vidstabtransform=smoothing=30
@end example
@end itemize
@section vflip
Flip the input video vertically.
For example, to vertically flip a video with @command{ffmpeg}:
@example
ffmpeg -i in.avi -vf "vflip" out.avi
@end example
@section vignette
Make or reverse a natural vignetting effect.
The filter accepts the following options:
@table @option
@item angle, a
Set lens angle expression as a number of radians.
The value is clipped in the @code{[0,PI/2]} range.
Default value: @code{"PI/5"}
@item x0
@item y0
Set center coordinates expressions. Respectively @code{"w/2"} and @code{"h/2"}
by default.
@item mode
Set forward/backward mode.
Available modes are:
@table @samp
@item forward
The larger the distance from the central point, the darker the image becomes.
@item backward
The larger the distance from the central point, the brighter the image becomes.
This can be used to reverse a vignette effect, though there is no automatic
detection to extract the lens @option{angle} and other settings (yet). It can
also be used to create a burning effect.
@end table
Default value is @samp{forward}.
@item eval
Set evaluation mode for the expressions (@option{angle}, @option{x0}, @option{y0}).
It accepts the following values:
@table @samp
@item init
Evaluate expressions only once during the filter initialization.
@item frame
Evaluate expressions for each incoming frame. This is way slower than the
@samp{init} mode since it requires all the scalers to be re-computed, but it
allows advanced dynamic expressions.
@end table
Default value is @samp{init}.
@item dither
Set dithering to reduce the circular banding effects. Default is @code{1}
(enabled).
@item aspect
Set vignette aspect. This setting allows to adjust the shape of the vignette.
Setting this value to the SAR of the input will make a rectangular vignetting
following the dimensions of the video.
Default is @code{1/1}.
@end table
@subsection Expressions
The @option{alpha}, @option{x0} and @option{y0} expressions can contain the
following parameters.
@table @option
@item w
@item h
input width and height
@item n
the number of input frame, starting from 0
@item pts
the PTS (Presentation TimeStamp) time of the filtered video frame, expressed in
@var{TB} units, NAN if undefined
@item r
frame rate of the input video, NAN if the input frame rate is unknown
@item t
the PTS (Presentation TimeStamp) of the filtered video frame,
expressed in seconds, NAN if undefined
@item tb
time base of the input video
@end table
@subsection Examples
@itemize
@item
Apply simple strong vignetting effect:
@example
vignette=PI/4
@end example
@item
Make a flickering vignetting:
@example
vignette='PI/4+random(1)*PI/50':eval=frame
@end example
@end itemize
@section w3fdif
Deinterlace the input video ("w3fdif" stands for "Weston 3 Field
Deinterlacing Filter").
Based on the process described by Martin Weston for BBC R&D, and
implemented based on the de-interlace algorithm written by Jim
Easterbrook for BBC R&D, the Weston 3 field deinterlacing filter
uses filter coefficients calculated by BBC R&D.
There are two sets of filter coefficients, so called "simple":
and "complex". Which set of filter coefficients is used can
be set by passing an optional parameter:
@table @option
@item filter
Set the interlacing filter coefficients. Accepts one of the following values:
@table @samp
@item simple
Simple filter coefficient set.
@item complex
More-complex filter coefficient set.
@end table
Default value is @samp{complex}.
@item deint
Specify which frames to deinterlace. Accept one of the following values:
@table @samp
@item all
Deinterlace all frames,
@item interlaced
Only deinterlace frames marked as interlaced.
@end table
Default value is @samp{all}.
@end table
@anchor{yadif}
@section yadif
Deinterlace the input video ("yadif" means "yet another deinterlacing
filter").
This filter accepts the following options:
@table @option
@item mode
The interlacing mode to adopt, accepts one of the following values:
@table @option
@item 0, send_frame
output 1 frame for each frame
@item 1, send_field
output 1 frame for each field
@item 2, send_frame_nospatial
like @code{send_frame} but skip spatial interlacing check
@item 3, send_field_nospatial
like @code{send_field} but skip spatial interlacing check
@end table
Default value is @code{send_frame}.
@item parity
The picture field parity assumed for the input interlaced video, accepts one of
the following values:
@table @option
@item 0, tff
assume top field first
@item 1, bff
assume bottom field first
@item -1, auto
enable automatic detection
@end table
Default value is @code{auto}.
If interlacing is unknown or decoder does not export this information,
top field first will be assumed.
@item deint
Specify which frames to deinterlace. Accept one of the following
values:
@table @option
@item 0, all
deinterlace all frames
@item 1, interlaced
only deinterlace frames marked as interlaced
@end table
Default value is @code{all}.
@end table
@c man end VIDEO FILTERS
@chapter Video Sources
@c man begin VIDEO SOURCES
Below is a description of the currently available video sources.
@section buffer
Buffer video frames, and make them available to the filter chain.
This source is mainly intended for a programmatic use, in particular
through the interface defined in @file{libavfilter/vsrc_buffer.h}.
This source accepts the following options:
@table @option
@item video_size
Specify the size (width and height) of the buffered video frames. For the
syntax of this option, check the "Video size" section in the ffmpeg-utils
manual.
@item width
Input video width.
@item height
Input video height.
@item pix_fmt
A string representing the pixel format of the buffered video frames.
It may be a number corresponding to a pixel format, or a pixel format
name.
@item time_base
Specify the timebase assumed by the timestamps of the buffered frames.
@item frame_rate
Specify the frame rate expected for the video stream.
@item pixel_aspect, sar
Specify the sample aspect ratio assumed by the video frames.
@item sws_param
Specify the optional parameters to be used for the scale filter which
is automatically inserted when an input change is detected in the
input size or format.
@end table
For example:
@example
buffer=width=320:height=240:pix_fmt=yuv410p:time_base=1/24:sar=1
@end example
will instruct the source to accept video frames with size 320x240 and
with format "yuv410p", assuming 1/24 as the timestamps timebase and
square pixels (1:1 sample aspect ratio).
Since the pixel format with name "yuv410p" corresponds to the number 6
(check the enum AVPixelFormat definition in @file{libavutil/pixfmt.h}),
this example corresponds to:
@example
buffer=size=320x240:pixfmt=6:time_base=1/24:pixel_aspect=1/1
@end example
Alternatively, the options can be specified as a flat string, but this
syntax is deprecated:
@var{width}:@var{height}:@var{pix_fmt}:@var{time_base.num}:@var{time_base.den}:@var{pixel_aspect.num}:@var{pixel_aspect.den}[:@var{sws_param}]
@section cellauto
Create a pattern generated by an elementary cellular automaton.
The initial state of the cellular automaton can be defined through the
@option{filename}, and @option{pattern} options. If such options are
not specified an initial state is created randomly.
At each new frame a new row in the video is filled with the result of
the cellular automaton next generation. The behavior when the whole
frame is filled is defined by the @option{scroll} option.
This source accepts the following options:
@table @option
@item filename, f
Read the initial cellular automaton state, i.e. the starting row, from
the specified file.
In the file, each non-whitespace character is considered an alive
cell, a newline will terminate the row, and further characters in the
file will be ignored.
@item pattern, p
Read the initial cellular automaton state, i.e. the starting row, from
the specified string.
Each non-whitespace character in the string is considered an alive
cell, a newline will terminate the row, and further characters in the
string will be ignored.
@item rate, r
Set the video rate, that is the number of frames generated per second.
Default is 25.
@item random_fill_ratio, ratio
Set the random fill ratio for the initial cellular automaton row. It
is a floating point number value ranging from 0 to 1, defaults to
1/PHI.
This option is ignored when a file or a pattern is specified.
@item random_seed, seed
Set the seed for filling randomly the initial row, must be an integer
included between 0 and UINT32_MAX. If not specified, or if explicitly
set to -1, the filter will try to use a good random seed on a best
effort basis.
@item rule
Set the cellular automaton rule, it is a number ranging from 0 to 255.
Default value is 110.
@item size, s
Set the size of the output video. For the syntax of this option, check
the "Video size" section in the ffmpeg-utils manual.
If @option{filename} or @option{pattern} is specified, the size is set
by default to the width of the specified initial state row, and the
height is set to @var{width} * PHI.
If @option{size} is set, it must contain the width of the specified
pattern string, and the specified pattern will be centered in the
larger row.
If a filename or a pattern string is not specified, the size value
defaults to "320x518" (used for a randomly generated initial state).
@item scroll
If set to 1, scroll the output upward when all the rows in the output
have been already filled. If set to 0, the new generated row will be
written over the top row just after the bottom row is filled.
Defaults to 1.
@item start_full, full
If set to 1, completely fill the output with generated rows before
outputting the first frame.
This is the default behavior, for disabling set the value to 0.
@item stitch
If set to 1, stitch the left and right row edges together.
This is the default behavior, for disabling set the value to 0.
@end table
@subsection Examples
@itemize
@item
Read the initial state from @file{pattern}, and specify an output of
size 200x400.
@example
cellauto=f=pattern:s=200x400
@end example
@item
Generate a random initial row with a width of 200 cells, with a fill
ratio of 2/3:
@example
cellauto=ratio=2/3:s=200x200
@end example
@item
Create a pattern generated by rule 18 starting by a single alive cell
centered on an initial row with width 100:
@example
cellauto=p=@@:s=100x400:full=0:rule=18
@end example
@item
Specify a more elaborated initial pattern:
@example
cellauto=p='@@@@ @@ @@@@':s=100x400:full=0:rule=18
@end example
@end itemize
@section mandelbrot
Generate a Mandelbrot set fractal, and progressively zoom towards the
point specified with @var{start_x} and @var{start_y}.
This source accepts the following options:
@table @option
@item end_pts
Set the terminal pts value. Default value is 400.
@item end_scale
Set the terminal scale value.
Must be a floating point value. Default value is 0.3.
@item inner
Set the inner coloring mode, that is the algorithm used to draw the
Mandelbrot fractal internal region.
It shall assume one of the following values:
@table @option
@item black
Set black mode.
@item convergence
Show time until convergence.
@item mincol
Set color based on point closest to the origin of the iterations.
@item period
Set period mode.
@end table
Default value is @var{mincol}.
@item bailout
Set the bailout value. Default value is 10.0.
@item maxiter
Set the maximum of iterations performed by the rendering
algorithm. Default value is 7189.
@item outer
Set outer coloring mode.
It shall assume one of following values:
@table @option
@item iteration_count
Set iteration cound mode.
@item normalized_iteration_count
set normalized iteration count mode.
@end table
Default value is @var{normalized_iteration_count}.
@item rate, r
Set frame rate, expressed as number of frames per second. Default
value is "25".
@item size, s
Set frame size. For the syntax of this option, check the "Video
size" section in the ffmpeg-utils manual. Default value is "640x480".
@item start_scale
Set the initial scale value. Default value is 3.0.
@item start_x
Set the initial x position. Must be a floating point value between
-100 and 100. Default value is -0.743643887037158704752191506114774.
@item start_y
Set the initial y position. Must be a floating point value between
-100 and 100. Default value is -0.131825904205311970493132056385139.
@end table
@section mptestsrc
Generate various test patterns, as generated by the MPlayer test filter.
The size of the generated video is fixed, and is 256x256.
This source is useful in particular for testing encoding features.
This source accepts the following options:
@table @option
@item rate, r
Specify the frame rate of the sourced video, as the number of frames
generated per second. It has to be a string in the format
@var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float
number or a valid video frame rate abbreviation. The default value is
"25".
@item duration, d
Set the video duration of the sourced video. The accepted syntax is:
@example
[-]HH:MM:SS[.m...]
[-]S+[.m...]
@end example
See also the function @code{av_parse_time()}.
If not specified, or the expressed duration is negative, the video is
supposed to be generated forever.
@item test, t
Set the number or the name of the test to perform. Supported tests are:
@table @option
@item dc_luma
@item dc_chroma
@item freq_luma
@item freq_chroma
@item amp_luma
@item amp_chroma
@item cbp
@item mv
@item ring1
@item ring2
@item all
@end table
Default value is "all", which will cycle through the list of all tests.
@end table
For example the following:
@example
testsrc=t=dc_luma
@end example
will generate a "dc_luma" test pattern.
@section frei0r_src
Provide a frei0r source.
To enable compilation of this filter you need to install the frei0r
header and configure FFmpeg with @code{--enable-frei0r}.
This source accepts the following options:
@table @option
@item size
The size of the video to generate. For the syntax of this option, check the
"Video size" section in the ffmpeg-utils manual.
@item framerate
Framerate of the generated video, may be a string of the form
@var{num}/@var{den} or a frame rate abbreviation.
@item filter_name
The name to the frei0r source to load. For more information regarding frei0r and
how to set the parameters read the section @ref{frei0r} in the description of
the video filters.
@item filter_params
A '|'-separated list of parameters to pass to the frei0r source.
@end table
For example, to generate a frei0r partik0l source with size 200x200
and frame rate 10 which is overlayed on the overlay filter main input:
@example
frei0r_src=size=200x200:framerate=10:filter_name=partik0l:filter_params=1234 [overlay]; [in][overlay] overlay
@end example
@section life
Generate a life pattern.
This source is based on a generalization of John Conway's life game.
The sourced input represents a life grid, each pixel represents a cell
which can be in one of two possible states, alive or dead. Every cell
interacts with its eight neighbours, which are the cells that are
horizontally, vertically, or diagonally adjacent.
At each interaction the grid evolves according to the adopted rule,
which specifies the number of neighbor alive cells which will make a
cell stay alive or born. The @option{rule} option allows to specify
the rule to adopt.
This source accepts the following options:
@table @option
@item filename, f
Set the file from which to read the initial grid state. In the file,
each non-whitespace character is considered an alive cell, and newline
is used to delimit the end of each row.
If this option is not specified, the initial grid is generated
randomly.
@item rate, r
Set the video rate, that is the number of frames generated per second.
Default is 25.
@item random_fill_ratio, ratio
Set the random fill ratio for the initial random grid. It is a
floating point number value ranging from 0 to 1, defaults to 1/PHI.
It is ignored when a file is specified.
@item random_seed, seed
Set the seed for filling the initial random grid, must be an integer
included between 0 and UINT32_MAX. If not specified, or if explicitly
set to -1, the filter will try to use a good random seed on a best
effort basis.
@item rule
Set the life rule.
A rule can be specified with a code of the kind "S@var{NS}/B@var{NB}",
where @var{NS} and @var{NB} are sequences of numbers in the range 0-8,
@var{NS} specifies the number of alive neighbor cells which make a
live cell stay alive, and @var{NB} the number of alive neighbor cells
which make a dead cell to become alive (i.e. to "born").
"s" and "b" can be used in place of "S" and "B", respectively.
Alternatively a rule can be specified by an 18-bits integer. The 9
high order bits are used to encode the next cell state if it is alive
for each number of neighbor alive cells, the low order bits specify
the rule for "borning" new cells. Higher order bits encode for an
higher number of neighbor cells.
For example the number 6153 = @code{(12<<9)+9} specifies a stay alive
rule of 12 and a born rule of 9, which corresponds to "S23/B03".
Default value is "S23/B3", which is the original Conway's game of life
rule, and will keep a cell alive if it has 2 or 3 neighbor alive
cells, and will born a new cell if there are three alive cells around
a dead cell.
@item size, s
Set the size of the output video. For the syntax of this option, check the
"Video size" section in the ffmpeg-utils manual.
If @option{filename} is specified, the size is set by default to the
same size of the input file. If @option{size} is set, it must contain
the size specified in the input file, and the initial grid defined in
that file is centered in the larger resulting area.
If a filename is not specified, the size value defaults to "320x240"
(used for a randomly generated initial grid).
@item stitch
If set to 1, stitch the left and right grid edges together, and the
top and bottom edges also. Defaults to 1.
@item mold
Set cell mold speed. If set, a dead cell will go from @option{death_color} to
@option{mold_color} with a step of @option{mold}. @option{mold} can have a
value from 0 to 255.
@item life_color
Set the color of living (or new born) cells.
@item death_color
Set the color of dead cells. If @option{mold} is set, this is the first color
used to represent a dead cell.
@item mold_color
Set mold color, for definitely dead and moldy cells.
For the syntax of these 3 color options, check the "Color" section in the
ffmpeg-utils manual.
@end table
@subsection Examples
@itemize
@item
Read a grid from @file{pattern}, and center it on a grid of size
300x300 pixels:
@example
life=f=pattern:s=300x300
@end example
@item
Generate a random grid of size 200x200, with a fill ratio of 2/3:
@example
life=ratio=2/3:s=200x200
@end example
@item
Specify a custom rule for evolving a randomly generated grid:
@example
life=rule=S14/B34
@end example
@item
Full example with slow death effect (mold) using @command{ffplay}:
@example
ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_color=#00ff00,scale=1200:800:flags=16
@end example
@end itemize
@anchor{color}
@anchor{haldclutsrc}
@anchor{nullsrc}
@anchor{rgbtestsrc}
@anchor{smptebars}
@anchor{smptehdbars}
@anchor{testsrc}
@section color, haldclutsrc, nullsrc, rgbtestsrc, smptebars, smptehdbars, testsrc
The @code{color} source provides an uniformly colored input.
The @code{haldclutsrc} source provides an identity Hald CLUT. See also
@ref{haldclut} filter.
The @code{nullsrc} source returns unprocessed video frames. It is
mainly useful to be employed in analysis / debugging tools, or as the
source for filters which ignore the input data.
The @code{rgbtestsrc} source generates an RGB test pattern useful for
detecting RGB vs BGR issues. You should see a red, green and blue
stripe from top to bottom.
The @code{smptebars} source generates a color bars pattern, based on
the SMPTE Engineering Guideline EG 1-1990.
The @code{smptehdbars} source generates a color bars pattern, based on
the SMPTE RP 219-2002.
The @code{testsrc} source generates a test video pattern, showing a
color pattern, a scrolling gradient and a timestamp. This is mainly
intended for testing purposes.
The sources accept the following options:
@table @option
@item color, c
Specify the color of the source, only available in the @code{color}
source. For the syntax of this option, check the "Color" section in the
ffmpeg-utils manual.
@item level
Specify the level of the Hald CLUT, only available in the @code{haldclutsrc}
source. A level of @code{N} generates a picture of @code{N*N*N} by @code{N*N*N}
pixels to be used as identity matrix for 3D lookup tables. Each component is
coded on a @code{1/(N*N)} scale.
@item size, s
Specify the size of the sourced video. For the syntax of this option, check the
"Video size" section in the ffmpeg-utils manual. The default value is
"320x240".
This option is not available with the @code{haldclutsrc} filter.
@item rate, r
Specify the frame rate of the sourced video, as the number of frames
generated per second. It has to be a string in the format
@var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float
number or a valid video frame rate abbreviation. The default value is
"25".
@item sar
Set the sample aspect ratio of the sourced video.
@item duration, d
Set the video duration of the sourced video. The accepted syntax is:
@example
[-]HH[:MM[:SS[.m...]]]
[-]S+[.m...]
@end example
See also the function @code{av_parse_time()}.
If not specified, or the expressed duration is negative, the video is
supposed to be generated forever.
@item decimals, n
Set the number of decimals to show in the timestamp, only available in the
@code{testsrc} source.
The displayed timestamp value will correspond to the original
timestamp value multiplied by the power of 10 of the specified
value. Default value is 0.
@end table
For example the following:
@example
testsrc=duration=5.3:size=qcif:rate=10
@end example
will generate a video with a duration of 5.3 seconds, with size
176x144 and a frame rate of 10 frames per second.
The following graph description will generate a red source
with an opacity of 0.2, with size "qcif" and a frame rate of 10
frames per second.
@example
color=c=red@@0.2:s=qcif:r=10
@end example
If the input content is to be ignored, @code{nullsrc} can be used. The
following command generates noise in the luminance plane by employing
the @code{geq} filter:
@example
nullsrc=s=256x256, geq=random(1)*255:128:128
@end example
@subsection Commands
The @code{color} source supports the following commands:
@table @option
@item c, color
Set the color of the created image. Accepts the same syntax of the
corresponding @option{color} option.
@end table
@c man end VIDEO SOURCES
@chapter Video Sinks
@c man begin VIDEO SINKS
Below is a description of the currently available video sinks.
@section buffersink
Buffer video frames, and make them available to the end of the filter
graph.
This sink is mainly intended for a programmatic use, in particular
through the interface defined in @file{libavfilter/buffersink.h}
or the options system.
It accepts a pointer to an AVBufferSinkContext structure, which
defines the incoming buffers' formats, to be passed as the opaque
parameter to @code{avfilter_init_filter} for initialization.
@section nullsink
Null video sink, do absolutely nothing with the input video. It is
mainly useful as a template and to be employed in analysis / debugging
tools.
@c man end VIDEO SINKS
@chapter Multimedia Filters
@c man begin MULTIMEDIA FILTERS
Below is a description of the currently available multimedia filters.
@section avectorscope
Convert input audio to a video output, representing the audio vector
scope.
The filter is used to measure the difference between channels of stereo
audio stream. A monoaural signal, consisting of identical left and right
signal, results in straight vertical line. Any stereo separation is visible
as a deviation from this line, creating a Lissajous figure.
If the straight (or deviation from it) but horizontal line appears this
indicates that the left and right channels are out of phase.
The filter accepts the following options:
@table @option
@item mode, m
Set the vectorscope mode.
Available values are:
@table @samp
@item lissajous
Lissajous rotated by 45 degrees.
@item lissajous_xy
Same as above but not rotated.
@end table
Default value is @samp{lissajous}.
@item size, s
Set the video size for the output. For the syntax of this option, check the "Video size"
section in the ffmpeg-utils manual. Default value is @code{400x400}.
@item rate, r
Set the output frame rate. Default value is @code{25}.
@item rc
@item gc
@item bc
Specify the red, green and blue contrast. Default values are @code{40}, @code{160} and @code{80}.
Allowed range is @code{[0, 255]}.
@item rf
@item gf
@item bf
Specify the red, green and blue fade. Default values are @code{15}, @code{10} and @code{5}.
Allowed range is @code{[0, 255]}.
@item zoom
Set the zoom factor. Default value is @code{1}. Allowed range is @code{[1, 10]}.
@end table
@subsection Examples
@itemize
@item
Complete example using @command{ffplay}:
@example
ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1];
[a] avectorscope=zoom=1.3:rc=2:gc=200:bc=10:rf=1:gf=8:bf=7 [out0]'
@end example
@end itemize
@section concat
Concatenate audio and video streams, joining them together one after the
other.
The filter works on segments of synchronized video and audio streams. All
segments must have the same number of streams of each type, and that will
also be the number of streams at output.
The filter accepts the following options:
@table @option
@item n
Set the number of segments. Default is 2.
@item v
Set the number of output video streams, that is also the number of video
streams in each segment. Default is 1.
@item a
Set the number of output audio streams, that is also the number of video
streams in each segment. Default is 0.
@item unsafe
Activate unsafe mode: do not fail if segments have a different format.
@end table
The filter has @var{v}+@var{a} outputs: first @var{v} video outputs, then
@var{a} audio outputs.
There are @var{n}x(@var{v}+@var{a}) inputs: first the inputs for the first
segment, in the same order as the outputs, then the inputs for the second
segment, etc.
Related streams do not always have exactly the same duration, for various
reasons including codec frame size or sloppy authoring. For that reason,
related synchronized streams (e.g. a video and its audio track) should be
concatenated at once. The concat filter will use the duration of the longest
stream in each segment (except the last one), and if necessary pad shorter
audio streams with silence.
For this filter to work correctly, all segments must start at timestamp 0.
All corresponding streams must have the same parameters in all segments; the
filtering system will automatically select a common pixel format for video
streams, and a common sample format, sample rate and channel layout for
audio streams, but other settings, such as resolution, must be converted
explicitly by the user.
Different frame rates are acceptable but will result in variable frame rate
at output; be sure to configure the output file to handle it.
@subsection Examples
@itemize
@item
Concatenate an opening, an episode and an ending, all in bilingual version
(video in stream 0, audio in streams 1 and 2):
@example
ffmpeg -i opening.mkv -i episode.mkv -i ending.mkv -filter_complex \
'[0:0] [0:1] [0:2] [1:0] [1:1] [1:2] [2:0] [2:1] [2:2]
concat=n=3:v=1:a=2 [v] [a1] [a2]' \
-map '[v]' -map '[a1]' -map '[a2]' output.mkv
@end example
@item
Concatenate two parts, handling audio and video separately, using the
(a)movie sources, and adjusting the resolution:
@example
movie=part1.mp4, scale=512:288 [v1] ; amovie=part1.mp4 [a1] ;
movie=part2.mp4, scale=512:288 [v2] ; amovie=part2.mp4 [a2] ;
[v1] [v2] concat [outv] ; [a1] [a2] concat=v=0:a=1 [outa]
@end example
Note that a desync will happen at the stitch if the audio and video streams
do not have exactly the same duration in the first file.
@end itemize
@section ebur128
EBU R128 scanner filter. This filter takes an audio stream as input and outputs
it unchanged. By default, it logs a message at a frequency of 10Hz with the
Momentary loudness (identified by @code{M}), Short-term loudness (@code{S}),
Integrated loudness (@code{I}) and Loudness Range (@code{LRA}).
The filter also has a video output (see the @var{video} option) with a real
time graph to observe the loudness evolution. The graphic contains the logged
message mentioned above, so it is not printed anymore when this option is set,
unless the verbose logging is set. The main graphing area contains the
short-term loudness (3 seconds of analysis), and the gauge on the right is for
the momentary loudness (400 milliseconds).
More information about the Loudness Recommendation EBU R128 on
@url{http://tech.ebu.ch/loudness}.
The filter accepts the following options:
@table @option
@item video
Activate the video output. The audio stream is passed unchanged whether this
option is set or no. The video stream will be the first output stream if
activated. Default is @code{0}.
@item size
Set the video size. This option is for video only. For the syntax of this
option, check the "Video size" section in the ffmpeg-utils manual. Default
and minimum resolution is @code{640x480}.
@item meter
Set the EBU scale meter. Default is @code{9}. Common values are @code{9} and
@code{18}, respectively for EBU scale meter +9 and EBU scale meter +18. Any
other integer value between this range is allowed.
@item metadata
Set metadata injection. If set to @code{1}, the audio input will be segmented
into 100ms output frames, each of them containing various loudness information
in metadata. All the metadata keys are prefixed with @code{lavfi.r128.}.
Default is @code{0}.
@item framelog
Force the frame logging level.
Available values are:
@table @samp
@item info
information logging level
@item verbose
verbose logging level
@end table
By default, the logging level is set to @var{info}. If the @option{video} or
the @option{metadata} options are set, it switches to @var{verbose}.
@end table
@subsection Examples
@itemize
@item
Real-time graph using @command{ffplay}, with a EBU scale meter +18:
@example
ffplay -f lavfi -i "amovie=input.mp3,ebur128=video=1:meter=18 [out0][out1]"
@end example
@item
Run an analysis with @command{ffmpeg}:
@example
ffmpeg -nostats -i input.mp3 -filter_complex ebur128 -f null -
@end example
@end itemize
@section interleave, ainterleave
Temporally interleave frames from several inputs.
@code{interleave} works with video inputs, @code{ainterleave} with audio.
These filters read frames from several inputs and send the oldest
queued frame to the output.
Input streams must have a well defined, monotonically increasing frame
timestamp values.
In order to submit one frame to output, these filters need to enqueue
at least one frame for each input, so they cannot work in case one
input is not yet terminated and will not receive incoming frames.
For example consider the case when one input is a @code{select} filter
which always drop input frames. The @code{interleave} filter will keep
reading from that input, but it will never be able to send new frames
to output until the input will send an end-of-stream signal.
Also, depending on inputs synchronization, the filters will drop
frames in case one input receives more frames than the other ones, and
the queue is already filled.
These filters accept the following options:
@table @option
@item nb_inputs, n
Set the number of different inputs, it is 2 by default.
@end table
@subsection Examples
@itemize
@item
Interleave frames belonging to different streams using @command{ffmpeg}:
@example
ffmpeg -i bambi.avi -i pr0n.mkv -filter_complex "[0:v][1:v] interleave" out.avi
@end example
@item
Add flickering blur effect:
@example
select='if(gt(random(0), 0.2), 1, 2)':n=2 [tmp], boxblur=2:2, [tmp] interleave
@end example
@end itemize
@section perms, aperms
Set read/write permissions for the output frames.
These filters are mainly aimed at developers to test direct path in the
following filter in the filtergraph.
The filters accept the following options:
@table @option
@item mode
Select the permissions mode.
It accepts the following values:
@table @samp
@item none
Do nothing. This is the default.
@item ro
Set all the output frames read-only.
@item rw
Set all the output frames directly writable.
@item toggle
Make the frame read-only if writable, and writable if read-only.
@item random
Set each output frame read-only or writable randomly.
@end table
@item seed
Set the seed for the @var{random} mode, must be an integer included between
@code{0} and @code{UINT32_MAX}. If not specified, or if explicitly set to
@code{-1}, the filter will try to use a good random seed on a best effort
basis.
@end table
Note: in case of auto-inserted filter between the permission filter and the
following one, the permission might not be received as expected in that
following filter. Inserting a @ref{format} or @ref{aformat} filter before the
perms/aperms filter can avoid this problem.
@section select, aselect
Select frames to pass in output.
This filter accepts the following options:
@table @option
@item expr, e
Set expression, which is evaluated for each input frame.
If the expression is evaluated to zero, the frame is discarded.
If the evaluation result is negative or NaN, the frame is sent to the
first output; otherwise it is sent to the output with index
@code{ceil(val)-1}, assuming that the input index starts from 0.
For example a value of @code{1.2} corresponds to the output with index
@code{ceil(1.2)-1 = 2-1 = 1}, that is the second output.
@item outputs, n
Set the number of outputs. The output to which to send the selected
frame is based on the result of the evaluation. Default value is 1.
@end table
The expression can contain the following constants:
@table @option
@item n
the sequential number of the filtered frame, starting from 0
@item selected_n
the sequential number of the selected frame, starting from 0
@item prev_selected_n
the sequential number of the last selected frame, NAN if undefined
@item TB
timebase of the input timestamps
@item pts
the PTS (Presentation TimeStamp) of the filtered video frame,
expressed in @var{TB} units, NAN if undefined
@item t
the PTS (Presentation TimeStamp) of the filtered video frame,
expressed in seconds, NAN if undefined
@item prev_pts
the PTS of the previously filtered video frame, NAN if undefined
@item prev_selected_pts
the PTS of the last previously filtered video frame, NAN if undefined
@item prev_selected_t
the PTS of the last previously selected video frame, NAN if undefined
@item start_pts
the PTS of the first video frame in the video, NAN if undefined
@item start_t
the time of the first video frame in the video, NAN if undefined
@item pict_type @emph{(video only)}
the type of the filtered frame, can assume one of the following
values:
@table @option
@item I
@item P
@item B
@item S
@item SI
@item SP
@item BI
@end table
@item interlace_type @emph{(video only)}
the frame interlace type, can assume one of the following values:
@table @option
@item PROGRESSIVE
the frame is progressive (not interlaced)
@item TOPFIRST
the frame is top-field-first
@item BOTTOMFIRST
the frame is bottom-field-first
@end table
@item consumed_sample_n @emph{(audio only)}
the number of selected samples before the current frame
@item samples_n @emph{(audio only)}
the number of samples in the current frame
@item sample_rate @emph{(audio only)}
the input sample rate
@item key
1 if the filtered frame is a key-frame, 0 otherwise
@item pos
the position in the file of the filtered frame, -1 if the information
is not available (e.g. for synthetic video)
@item scene @emph{(video only)}
value between 0 and 1 to indicate a new scene; a low value reflects a low
probability for the current frame to introduce a new scene, while a higher
value means the current frame is more likely to be one (see the example below)
@end table
The default value of the select expression is "1".
@subsection Examples
@itemize
@item
Select all frames in input:
@example
select
@end example
The example above is the same as:
@example
select=1
@end example
@item
Skip all frames:
@example
select=0
@end example
@item
Select only I-frames:
@example
select='eq(pict_type\,I)'
@end example
@item
Select one frame every 100:
@example
select='not(mod(n\,100))'
@end example
@item
Select only frames contained in the 10-20 time interval:
@example
select=between(t\,10\,20)
@end example
@item
Select only I frames contained in the 10-20 time interval:
@example
select=between(t\,10\,20)*eq(pict_type\,I)
@end example
@item
Select frames with a minimum distance of 10 seconds:
@example
select='isnan(prev_selected_t)+gte(t-prev_selected_t\,10)'
@end example
@item
Use aselect to select only audio frames with samples number > 100:
@example
aselect='gt(samples_n\,100)'
@end example
@item
Create a mosaic of the first scenes:
@example
ffmpeg -i video.avi -vf select='gt(scene\,0.4)',scale=160:120,tile -frames:v 1 preview.png
@end example
Comparing @var{scene} against a value between 0.3 and 0.5 is generally a sane
choice.
@item
Send even and odd frames to separate outputs, and compose them:
@example
select=n=2:e='mod(n, 2)+1' [odd][even]; [odd] pad=h=2*ih [tmp]; [tmp][even] overlay=y=h
@end example
@end itemize
@section sendcmd, asendcmd
Send commands to filters in the filtergraph.
These filters read commands to be sent to other filters in the
filtergraph.
@code{sendcmd} must be inserted between two video filters,
@code{asendcmd} must be inserted between two audio filters, but apart
from that they act the same way.
The specification of commands can be provided in the filter arguments
with the @var{commands} option, or in a file specified by the
@var{filename} option.
These filters accept the following options:
@table @option
@item commands, c
Set the commands to be read and sent to the other filters.
@item filename, f
Set the filename of the commands to be read and sent to the other
filters.
@end table
@subsection Commands syntax
A commands description consists of a sequence of interval
specifications, comprising a list of commands to be executed when a
particular event related to that interval occurs. The occurring event
is typically the current frame time entering or leaving a given time
interval.
An interval is specified by the following syntax:
@example
@var{START}[-@var{END}] @var{COMMANDS};
@end example
The time interval is specified by the @var{START} and @var{END} times.
@var{END} is optional and defaults to the maximum time.
The current frame time is considered within the specified interval if
it is included in the interval [@var{START}, @var{END}), that is when
the time is greater or equal to @var{START} and is lesser than
@var{END}.
@var{COMMANDS} consists of a sequence of one or more command
specifications, separated by ",", relating to that interval. The
syntax of a command specification is given by:
@example
[@var{FLAGS}] @var{TARGET} @var{COMMAND} @var{ARG}
@end example
@var{FLAGS} is optional and specifies the type of events relating to
the time interval which enable sending the specified command, and must
be a non-null sequence of identifier flags separated by "+" or "|" and
enclosed between "[" and "]".
The following flags are recognized:
@table @option
@item enter
The command is sent when the current frame timestamp enters the
specified interval. In other words, the command is sent when the
previous frame timestamp was not in the given interval, and the
current is.
@item leave
The command is sent when the current frame timestamp leaves the
specified interval. In other words, the command is sent when the
previous frame timestamp was in the given interval, and the
current is not.
@end table
If @var{FLAGS} is not specified, a default value of @code{[enter]} is
assumed.
@var{TARGET} specifies the target of the command, usually the name of
the filter class or a specific filter instance name.
@var{COMMAND} specifies the name of the command for the target filter.
@var{ARG} is optional and specifies the optional list of argument for
the given @var{COMMAND}.
Between one interval specification and another, whitespaces, or
sequences of characters starting with @code{#} until the end of line,
are ignored and can be used to annotate comments.
A simplified BNF description of the commands specification syntax
follows:
@example
@var{COMMAND_FLAG} ::= "enter" | "leave"
@var{COMMAND_FLAGS} ::= @var{COMMAND_FLAG} [(+|"|")@var{COMMAND_FLAG}]
@var{COMMAND} ::= ["[" @var{COMMAND_FLAGS} "]"] @var{TARGET} @var{COMMAND} [@var{ARG}]
@var{COMMANDS} ::= @var{COMMAND} [,@var{COMMANDS}]
@var{INTERVAL} ::= @var{START}[-@var{END}] @var{COMMANDS}
@var{INTERVALS} ::= @var{INTERVAL}[;@var{INTERVALS}]
@end example
@subsection Examples
@itemize
@item
Specify audio tempo change at second 4:
@example
asendcmd=c='4.0 atempo tempo 1.5',atempo
@end example
@item
Specify a list of drawtext and hue commands in a file.
@example
# show text in the interval 5-10
5.0-10.0 [enter] drawtext reinit 'fontfile=FreeSerif.ttf:text=hello world',
[leave] drawtext reinit 'fontfile=FreeSerif.ttf:text=';
# desaturate the image in the interval 15-20
15.0-20.0 [enter] hue s 0,
[enter] drawtext reinit 'fontfile=FreeSerif.ttf:text=nocolor',
[leave] hue s 1,
[leave] drawtext reinit 'fontfile=FreeSerif.ttf:text=color';
# apply an exponential saturation fade-out effect, starting from time 25
25 [enter] hue s exp(25-t)
@end example
A filtergraph allowing to read and process the above command list
stored in a file @file{test.cmd}, can be specified with:
@example
sendcmd=f=test.cmd,drawtext=fontfile=FreeSerif.ttf:text='',hue
@end example
@end itemize
@anchor{setpts}
@section setpts, asetpts
Change the PTS (presentation timestamp) of the input frames.
@code{setpts} works on video frames, @code{asetpts} on audio frames.
This filter accepts the following options:
@table @option
@item expr
The expression which is evaluated for each frame to construct its timestamp.
@end table
The expression is evaluated through the eval API and can contain the following
constants:
@table @option
@item FRAME_RATE
frame rate, only defined for constant frame-rate video
@item PTS
the presentation timestamp in input
@item N
the count of the input frame for video or the number of consumed samples,
not including the current frame for audio, starting from 0.
@item NB_CONSUMED_SAMPLES
the number of consumed samples, not including the current frame (only
audio)
@item NB_SAMPLES, S
the number of samples in the current frame (only audio)
@item SAMPLE_RATE, SR
audio sample rate
@item STARTPTS
the PTS of the first frame
@item STARTT
the time in seconds of the first frame
@item INTERLACED
tell if the current frame is interlaced
@item T
the time in seconds of the current frame
@item POS
original position in the file of the frame, or undefined if undefined
for the current frame
@item PREV_INPTS
previous input PTS
@item PREV_INT
previous input time in seconds
@item PREV_OUTPTS
previous output PTS
@item PREV_OUTT
previous output time in seconds
@item RTCTIME
wallclock (RTC) time in microseconds. This is deprecated, use time(0)
instead.
@item RTCSTART
wallclock (RTC) time at the start of the movie in microseconds
@item TB
timebase of the input timestamps
@end table
@subsection Examples
@itemize
@item
Start counting PTS from zero
@example
setpts=PTS-STARTPTS
@end example
@item
Apply fast motion effect:
@example
setpts=0.5*PTS
@end example
@item
Apply slow motion effect:
@example
setpts=2.0*PTS
@end example
@item
Set fixed rate of 25 frames per second:
@example
setpts=N/(25*TB)
@end example
@item
Set fixed rate 25 fps with some jitter:
@example
setpts='1/(25*TB) * (N + 0.05 * sin(N*2*PI/25))'
@end example
@item
Apply an offset of 10 seconds to the input PTS:
@example
setpts=PTS+10/TB
@end example
@item
Generate timestamps from a "live source" and rebase onto the current timebase:
@example
setpts='(RTCTIME - RTCSTART) / (TB * 1000000)'
@end example
@item
Generate timestamps by counting samples:
@example
asetpts=N/SR/TB
@end example
@end itemize
@section settb, asettb
Set the timebase to use for the output frames timestamps.
It is mainly useful for testing timebase configuration.
This filter accepts the following options:
@table @option
@item expr, tb
The expression which is evaluated into the output timebase.
@end table
The value for @option{tb} is an arithmetic expression representing a
rational. The expression can contain the constants "AVTB" (the default
timebase), "intb" (the input timebase) and "sr" (the sample rate,
audio only). Default value is "intb".
@subsection Examples
@itemize
@item
Set the timebase to 1/25:
@example
settb=expr=1/25
@end example
@item
Set the timebase to 1/10:
@example
settb=expr=0.1
@end example
@item
Set the timebase to 1001/1000:
@example
settb=1+0.001
@end example
@item
Set the timebase to 2*intb:
@example
settb=2*intb
@end example
@item
Set the default timebase value:
@example
settb=AVTB
@end example
@end itemize
@section showspectrum
Convert input audio to a video output, representing the audio frequency
spectrum.
The filter accepts the following options:
@table @option
@item size, s
Specify the video size for the output. For the syntax of this option, check
the "Video size" section in the ffmpeg-utils manual. Default value is
@code{640x512}.
@item slide
Specify if the spectrum should slide along the window. Default value is
@code{0}.
@item mode
Specify display mode.
It accepts the following values:
@table @samp
@item combined
all channels are displayed in the same row
@item separate
all channels are displayed in separate rows
@end table
Default value is @samp{combined}.
@item color
Specify display color mode.
It accepts the following values:
@table @samp
@item channel
each channel is displayed in a separate color
@item intensity
each channel is is displayed using the same color scheme
@end table
Default value is @samp{channel}.
@item scale
Specify scale used for calculating intensity color values.
It accepts the following values:
@table @samp
@item lin
linear
@item sqrt
square root, default
@item cbrt
cubic root
@item log
logarithmic
@end table
Default value is @samp{sqrt}.
@item saturation
Set saturation modifier for displayed colors. Negative values provide
alternative color scheme. @code{0} is no saturation at all.
Saturation must be in [-10.0, 10.0] range.
Default value is @code{1}.
@end table
The usage is very similar to the showwaves filter; see the examples in that
section.
@subsection Examples
@itemize
@item
Large window with logarithmic color scaling:
@example
showspectrum=s=1280x480:scale=log
@end example
@item
Complete example for a colored and sliding spectrum per channel using @command{ffplay}:
@example
ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1];
[a] showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt [out0]'
@end example
@end itemize
@section showwaves
Convert input audio to a video output, representing the samples waves.
The filter accepts the following options:
@table @option
@item size, s
Specify the video size for the output. For the syntax of this option, check
the "Video size" section in the ffmpeg-utils manual. Default value
is "600x240".
@item mode
Set display mode.
Available values are:
@table @samp
@item point
Draw a point for each sample.
@item line
Draw a vertical line for each sample.
@end table
Default value is @code{point}.
@item n
Set the number of samples which are printed on the same column. A
larger value will decrease the frame rate. Must be a positive
integer. This option can be set only if the value for @var{rate}
is not explicitly specified.
@item rate, r
Set the (approximate) output frame rate. This is done by setting the
option @var{n}. Default value is "25".
@end table
@subsection Examples
@itemize
@item
Output the input file audio and the corresponding video representation
at the same time:
@example
amovie=a.mp3,asplit[out0],showwaves[out1]
@end example
@item
Create a synthetic signal and show it with showwaves, forcing a
frame rate of 30 frames per second:
@example
aevalsrc=sin(1*2*PI*t)*sin(880*2*PI*t):cos(2*PI*200*t),asplit[out0],showwaves=r=30[out1]
@end example
@end itemize
@section split, asplit
Split input into several identical outputs.
@code{asplit} works with audio input, @code{split} with video.
The filter accepts a single parameter which specifies the number of outputs. If
unspecified, it defaults to 2.
@subsection Examples
@itemize
@item
Create two separate outputs from the same input:
@example
[in] split [out0][out1]
@end example
@item
To create 3 or more outputs, you need to specify the number of
outputs, like in:
@example
[in] asplit=3 [out0][out1][out2]
@end example
@item
Create two separate outputs from the same input, one cropped and
one padded:
@example
[in] split [splitout1][splitout2];
[splitout1] crop=100:100:0:0 [cropout];
[splitout2] pad=200:200:100:100 [padout];
@end example
@item
Create 5 copies of the input audio with @command{ffmpeg}:
@example
ffmpeg -i INPUT -filter_complex asplit=5 OUTPUT
@end example
@end itemize
@section zmq, azmq
Receive commands sent through a libzmq client, and forward them to
filters in the filtergraph.
@code{zmq} and @code{azmq} work as a pass-through filters. @code{zmq}
must be inserted between two video filters, @code{azmq} between two
audio filters.
To enable these filters you need to install the libzmq library and
headers and configure FFmpeg with @code{--enable-libzmq}.
For more information about libzmq see:
@url{http://www.zeromq.org/}
The @code{zmq} and @code{azmq} filters work as a libzmq server, which
receives messages sent through a network interface defined by the
@option{bind_address} option.
The received message must be in the form:
@example
@var{TARGET} @var{COMMAND} [@var{ARG}]
@end example
@var{TARGET} specifies the target of the command, usually the name of
the filter class or a specific filter instance name.
@var{COMMAND} specifies the name of the command for the target filter.
@var{ARG} is optional and specifies the optional argument list for the
given @var{COMMAND}.
Upon reception, the message is processed and the corresponding command
is injected into the filtergraph. Depending on the result, the filter
will send a reply to the client, adopting the format:
@example
@var{ERROR_CODE} @var{ERROR_REASON}
@var{MESSAGE}
@end example
@var{MESSAGE} is optional.
@subsection Examples
Look at @file{tools/zmqsend} for an example of a zmq client which can
be used to send commands processed by these filters.
Consider the following filtergraph generated by @command{ffplay}
@example
ffplay -dumpgraph 1 -f lavfi "
color=s=100x100:c=red [l];
color=s=100x100:c=blue [r];
nullsrc=s=200x100, zmq [bg];
[bg][l] overlay [bg+l];
[bg+l][r] overlay=x=100 "
@end example
To change the color of the left side of the video, the following
command can be used:
@example
echo Parsed_color_0 c yellow | tools/zmqsend
@end example
To change the right side:
@example
echo Parsed_color_1 c pink | tools/zmqsend
@end example
@c man end MULTIMEDIA FILTERS
@chapter Multimedia Sources
@c man begin MULTIMEDIA SOURCES
Below is a description of the currently available multimedia sources.
@section amovie
This is the same as @ref{movie} source, except it selects an audio
stream by default.
@anchor{movie}
@section movie
Read audio and/or video stream(s) from a movie container.
This filter accepts the following options:
@table @option
@item filename
The name of the resource to read (not necessarily a file but also a device or a
stream accessed through some protocol).
@item format_name, f
Specifies the format assumed for the movie to read, and can be either
the name of a container or an input device. If not specified the
format is guessed from @var{movie_name} or by probing.
@item seek_point, sp
Specifies the seek point in seconds, the frames will be output
starting from this seek point, the parameter is evaluated with
@code{av_strtod} so the numerical value may be suffixed by an IS
postfix. Default value is "0".
@item streams, s
Specifies the streams to read. Several streams can be specified,
separated by "+". The source will then have as many outputs, in the
same order. The syntax is explained in the ``Stream specifiers''
section in the ffmpeg manual. Two special names, "dv" and "da" specify
respectively the default (best suited) video and audio stream. Default
is "dv", or "da" if the filter is called as "amovie".
@item stream_index, si
Specifies the index of the video stream to read. If the value is -1,
the best suited video stream will be automatically selected. Default
value is "-1". Deprecated. If the filter is called "amovie", it will select
audio instead of video.
@item loop
Specifies how many times to read the stream in sequence.
If the value is less than 1, the stream will be read again and again.
Default value is "1".
Note that when the movie is looped the source timestamps are not
changed, so it will generate non monotonically increasing timestamps.
@end table
This filter allows to overlay a second video on top of main input of
a filtergraph as shown in this graph:
@example
input -----------> deltapts0 --> overlay --> output
^
|
movie --> scale--> deltapts1 -------+
@end example
@subsection Examples
@itemize
@item
Skip 3.2 seconds from the start of the avi file in.avi, and overlay it
on top of the input labelled as "in":
@example
movie=in.avi:seek_point=3.2, scale=180:-1, setpts=PTS-STARTPTS [over];
[in] setpts=PTS-STARTPTS [main];
[main][over] overlay=16:16 [out]
@end example
@item
Read from a video4linux2 device, and overlay it on top of the input
labelled as "in":
@example
movie=/dev/video0:f=video4linux2, scale=180:-1, setpts=PTS-STARTPTS [over];
[in] setpts=PTS-STARTPTS [main];
[main][over] overlay=16:16 [out]
@end example
@item
Read the first video stream and the audio stream with id 0x81 from
dvd.vob; the video is connected to the pad named "video" and the audio is
connected to the pad named "audio":
@example
movie=dvd.vob:s=v:0+#0x81 [video] [audio]
@end example
@end itemize
@c man end MULTIMEDIA SOURCES

/contrib/sdk/sources/ffmpeg/doc/formats.texi
0,0 → 1,188
@chapter Format Options
@c man begin FORMAT OPTIONS
The libavformat library provides some generic global options, which
can be set on all the muxers and demuxers. In addition each muxer or
demuxer may support so-called private options, which are specific for
that component.
Options may be set by specifying -@var{option} @var{value} in the
FFmpeg tools, or by setting the value explicitly in the
@code{AVFormatContext} options or using the @file{libavutil/opt.h} API
for programmatic use.
The list of supported options follows:
@table @option
@item avioflags @var{flags} (@emph{input/output})
Possible values:
@table @samp
@item direct
Reduce buffering.
@end table
@item probesize @var{integer} (@emph{input})
Set probing size in bytes, i.e. the size of the data to analyze to get
stream information. A higher value will allow to detect more
information in case it is dispersed into the stream, but will increase
latency. Must be an integer not lesser than 32. It is 5000000 by default.
@item packetsize @var{integer} (@emph{output})
Set packet size.
@item fflags @var{flags} (@emph{input/output})
Set format flags.
Possible values:
@table @samp
@item ignidx
Ignore index.
@item genpts
Generate PTS.
@item nofillin
Do not fill in missing values that can be exactly calculated.
@item noparse
Disable AVParsers, this needs @code{+nofillin} too.
@item igndts
Ignore DTS.
@item discardcorrupt
Discard corrupted frames.
@item sortdts
Try to interleave output packets by DTS.
@item keepside
Do not merge side data.
@item latm
Enable RTP MP4A-LATM payload.
@item nobuffer
Reduce the latency introduced by optional buffering
@end table
@item seek2any @var{integer} (@emph{input})
Allow seeking to non-keyframes on demuxer level when supported if set to 1.
Default is 0.
@item analyzeduration @var{integer} (@emph{input})
Specify how many microseconds are analyzed to probe the input. A
higher value will allow to detect more accurate information, but will
increase latency. It defaults to 5,000,000 microseconds = 5 seconds.
@item cryptokey @var{hexadecimal string} (@emph{input})
Set decryption key.
@item indexmem @var{integer} (@emph{input})
Set max memory used for timestamp index (per stream).
@item rtbufsize @var{integer} (@emph{input})
Set max memory used for buffering real-time frames.
@item fdebug @var{flags} (@emph{input/output})
Print specific debug info.
Possible values:
@table @samp
@item ts
@end table
@item max_delay @var{integer} (@emph{input/output})
Set maximum muxing or demuxing delay in microseconds.
@item fpsprobesize @var{integer} (@emph{input})
Set number of frames used to probe fps.
@item audio_preload @var{integer} (@emph{output})
Set microseconds by which audio packets should be interleaved earlier.
@item chunk_duration @var{integer} (@emph{output})
Set microseconds for each chunk.
@item chunk_size @var{integer} (@emph{output})
Set size in bytes for each chunk.
@item err_detect, f_err_detect @var{flags} (@emph{input})
Set error detection flags. @code{f_err_detect} is deprecated and
should be used only via the @command{ffmpeg} tool.
Possible values:
@table @samp
@item crccheck
Verify embedded CRCs.
@item bitstream
Detect bitstream specification deviations.
@item buffer
Detect improper bitstream length.
@item explode
Abort decoding on minor error detection.
@item careful
Consider things that violate the spec and have not been seen in the
wild as errors.
@item compliant
Consider all spec non compliancies as errors.
@item aggressive
Consider things that a sane encoder should not do as an error.
@end table
@item use_wallclock_as_timestamps @var{integer} (@emph{input})
Use wallclock as timestamps.
@item avoid_negative_ts @var{integer} (@emph{output})
Shift timestamps to make them non-negative. A value of 1 enables shifting,
a value of 0 disables it, the default value of -1 enables shifting
when required by the target format.
When shifting is enabled, all output timestamps are shifted by the
same amount. Audio, video, and subtitles desynching and relative
timestamp differences are preserved compared to how they would have
been without shifting.
Also note that this affects only leading negative timestamps, and not
non-monotonic negative timestamps.
@item skip_initial_bytes @var{integer} (@emph{input})
Set number of bytes to skip before reading header and frames if set to 1.
Default is 0.
@item correct_ts_overflow @var{integer} (@emph{input})
Correct single timestamp overflows if set to 1. Default is 1.
@item flush_packets @var{integer} (@emph{output})
Flush the underlying I/O stream after each packet. Default 1 enables it, and
has the effect of reducing the latency; 0 disables it and may slightly
increase performance in some cases.
@end table
@c man end FORMAT OPTIONS
@anchor{Format stream specifiers}
@section Format stream specifiers
Format stream specifiers allow selection of one or more streams that
match specific properties.
Possible forms of stream specifiers are:
@table @option
@item @var{stream_index}
Matches the stream with this index.
@item @var{stream_type}[:@var{stream_index}]
@var{stream_type} is one of following: 'v' for video, 'a' for audio,
's' for subtitle, 'd' for data, and 't' for attachments. If
@var{stream_index} is given, then it matches the stream number
@var{stream_index} of this type. Otherwise, it matches all streams of
this type.
@item p:@var{program_id}[:@var{stream_index}]
If @var{stream_index} is given, then it matches the stream with number
@var{stream_index} in the program with the id
@var{program_id}. Otherwise, it matches all streams in the program.
@item #@var{stream_id}
Matches the stream by a format-specific ID.
@end table
The exact semantics of stream specifiers is defined by the
@code{avformat_match_stream_specifier()} function declared in the
@file{libavformat/avformat.h} header.
@include demuxers.texi
@include muxers.texi
@include metadata.texi

/contrib/sdk/sources/ffmpeg/doc/general.texi
0,0 → 1,1057
\input texinfo @c -*- texinfo -*-
@settitle General Documentation
@titlepage
@center @titlefont{General Documentation}
@end titlepage
@top
@contents
@chapter External libraries
FFmpeg can be hooked up with a number of external libraries to add support
for more formats. None of them are used by default, their use has to be
explicitly requested by passing the appropriate flags to
@command{./configure}.
@section OpenJPEG
FFmpeg can use the OpenJPEG libraries for encoding/decoding J2K videos. Go to
@url{http://www.openjpeg.org/} to get the libraries and follow the installation
instructions. To enable using OpenJPEG in FFmpeg, pass @code{--enable-libopenjpeg} to
@file{./configure}.
@section OpenCORE, VisualOn, and Fraunhofer libraries
Spun off Google Android sources, OpenCore, VisualOn and Fraunhofer
libraries provide encoders for a number of audio codecs.
@float NOTE
OpenCORE and VisualOn libraries are under the Apache License 2.0
(see @url{http://www.apache.org/licenses/LICENSE-2.0} for details), which is
incompatible to the LGPL version 2.1 and GPL version 2. You have to
upgrade FFmpeg's license to LGPL version 3 (or if you have enabled
GPL components, GPL version 3) by passing @code{--enable-version3} to configure in
order to use it.
The Fraunhofer AAC library is licensed under a license incompatible to the GPL
and is not known to be compatible to the LGPL. Therefore, you have to pass
@code{--enable-nonfree} to configure to use it.
@end float
@subsection OpenCORE AMR
FFmpeg can make use of the OpenCORE libraries for AMR-NB
decoding/encoding and AMR-WB decoding.
Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the
instructions for installing the libraries.
Then pass @code{--enable-libopencore-amrnb} and/or
@code{--enable-libopencore-amrwb} to configure to enable them.
@subsection VisualOn AAC encoder library
FFmpeg can make use of the VisualOn AACenc library for AAC encoding.
Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the
instructions for installing the library.
Then pass @code{--enable-libvo-aacenc} to configure to enable it.
@subsection VisualOn AMR-WB encoder library
FFmpeg can make use of the VisualOn AMR-WBenc library for AMR-WB encoding.
Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the
instructions for installing the library.
Then pass @code{--enable-libvo-amrwbenc} to configure to enable it.
@subsection Fraunhofer AAC library
FFmpeg can make use of the Fraunhofer AAC library for AAC encoding.
Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the
instructions for installing the library.
Then pass @code{--enable-libfdk-aac} to configure to enable it.
@section LAME
FFmpeg can make use of the LAME library for MP3 encoding.
Go to @url{http://lame.sourceforge.net/} and follow the
instructions for installing the library.
Then pass @code{--enable-libmp3lame} to configure to enable it.
@section TwoLAME
FFmpeg can make use of the TwoLAME library for MP2 encoding.
Go to @url{http://www.twolame.org/} and follow the
instructions for installing the library.
Then pass @code{--enable-libtwolame} to configure to enable it.
@section libvpx
FFmpeg can make use of the libvpx library for VP8/VP9 encoding.
Go to @url{http://www.webmproject.org/} and follow the instructions for
installing the library. Then pass @code{--enable-libvpx} to configure to
enable it.
@section libwavpack
FFmpeg can make use of the libwavpack library for WavPack encoding.
Go to @url{http://www.wavpack.com/} and follow the instructions for
installing the library. Then pass @code{--enable-libwavpack} to configure to
enable it.
@section x264
FFmpeg can make use of the x264 library for H.264 encoding.
Go to @url{http://www.videolan.org/developers/x264.html} and follow the
instructions for installing the library. Then pass @code{--enable-libx264} to
configure to enable it.
@float NOTE
x264 is under the GNU Public License Version 2 or later
(see @url{http://www.gnu.org/licenses/old-licenses/gpl-2.0.html} for
details), you must upgrade FFmpeg's license to GPL in order to use it.
@end float
@section libilbc
iLBC is a narrowband speech codec that has been made freely available
by Google as part of the WebRTC project. libilbc is a packaging friendly
copy of the iLBC codec. FFmpeg can make use of the libilbc library for
iLBC encoding and decoding.
Go to @url{https://github.com/dekkers/libilbc} and follow the instructions for
installing the library. Then pass @code{--enable-libilbc} to configure to
enable it.
@section libzvbi
libzvbi is a VBI decoding library which can be used by FFmpeg to decode DVB
teletext pages and DVB teletext subtitles.
Go to @url{http://sourceforge.net/projects/zapping/} and follow the instructions for
installing the library. Then pass @code{--enable-libzvbi} to configure to
enable it.
@float NOTE
libzvbi is licensed under the GNU General Public License Version 2 or later
(see @url{http://www.gnu.org/licenses/old-licenses/gpl-2.0.html} for details),
you must upgrade FFmpeg's license to GPL in order to use it.
@end float
@chapter Supported File Formats, Codecs or Features
You can use the @code{-formats} and @code{-codecs} options to have an exhaustive list.
@section File Formats
FFmpeg supports the following file formats through the @code{libavformat}
library:
@multitable @columnfractions .4 .1 .1 .4
@item Name @tab Encoding @tab Decoding @tab Comments
@item 4xm @tab @tab X
@tab 4X Technologies format, used in some games.
@item 8088flex TMV @tab @tab X
@item ACT Voice @tab @tab X
@tab contains G.729 audio
@item Adobe Filmstrip @tab X @tab X
@item Audio IFF (AIFF) @tab X @tab X
@item American Laser Games MM @tab @tab X
@tab Multimedia format used in games like Mad Dog McCree.
@item 3GPP AMR @tab X @tab X
@item Amazing Studio Packed Animation File @tab @tab X
@tab Multimedia format used in game Heart Of Darkness.
@item Apple HTTP Live Streaming @tab @tab X
@item Artworx Data Format @tab @tab X
@item ADP @tab @tab X
@tab Audio format used on the Nintendo Gamecube.
@item AFC @tab @tab X
@tab Audio format used on the Nintendo Gamecube.
@item ASF @tab X @tab X
@item AST @tab X @tab X
@tab Audio format used on the Nintendo Wii.
@item AVI @tab X @tab X
@item AviSynth @tab @tab X
@item AVR @tab @tab X
@tab Audio format used on Mac.
@item AVS @tab @tab X
@tab Multimedia format used by the Creature Shock game.
@item Beam Software SIFF @tab @tab X
@tab Audio and video format used in some games by Beam Software.
@item Bethesda Softworks VID @tab @tab X
@tab Used in some games from Bethesda Softworks.
@item Binary text @tab @tab X
@item Bink @tab @tab X
@tab Multimedia format used by many games.
@item Bitmap Brothers JV @tab @tab X
@tab Used in Z and Z95 games.
@item Brute Force & Ignorance @tab @tab X
@tab Used in the game Flash Traffic: City of Angels.
@item BRSTM @tab @tab X
@tab Audio format used on the Nintendo Wii.
@item BWF @tab X @tab X
@item CRI ADX @tab X @tab X
@tab Audio-only format used in console video games.
@item Discworld II BMV @tab @tab X
@item Interplay C93 @tab @tab X
@tab Used in the game Cyberia from Interplay.
@item Delphine Software International CIN @tab @tab X
@tab Multimedia format used by Delphine Software games.
@item CD+G @tab @tab X
@tab Video format used by CD+G karaoke disks
@item Commodore CDXL @tab @tab X
@tab Amiga CD video format
@item Core Audio Format @tab X @tab X
@tab Apple Core Audio Format
@item CRC testing format @tab X @tab
@item Creative Voice @tab X @tab X
@tab Created for the Sound Blaster Pro.
@item CRYO APC @tab @tab X
@tab Audio format used in some games by CRYO Interactive Entertainment.
@item D-Cinema audio @tab X @tab X
@item Deluxe Paint Animation @tab @tab X
@item DFA @tab @tab X
@tab This format is used in Chronomaster game
@item DV video @tab X @tab X
@item DXA @tab @tab X
@tab This format is used in the non-Windows version of the Feeble Files
game and different game cutscenes repacked for use with ScummVM.
@item Electronic Arts cdata @tab @tab X
@item Electronic Arts Multimedia @tab @tab X
@tab Used in various EA games; files have extensions like WVE and UV2.
@item Ensoniq Paris Audio File @tab @tab X
@item FFM (FFserver live feed) @tab X @tab X
@item Flash (SWF) @tab X @tab X
@item Flash 9 (AVM2) @tab X @tab X
@tab Only embedded audio is decoded.
@item FLI/FLC/FLX animation @tab @tab X
@tab .fli/.flc files
@item Flash Video (FLV) @tab X @tab X
@tab Macromedia Flash video files
@item framecrc testing format @tab X @tab
@item FunCom ISS @tab @tab X
@tab Audio format used in various games from FunCom like The Longest Journey.
@item G.723.1 @tab X @tab X
@item G.729 BIT @tab X @tab X
@item G.729 raw @tab @tab X
@item GIF Animation @tab X @tab X
@item GXF @tab X @tab X
@tab General eXchange Format SMPTE 360M, used by Thomson Grass Valley
playout servers.
@item iCEDraw File @tab @tab X
@item ICO @tab X @tab X
@tab Microsoft Windows ICO
@item id Quake II CIN video @tab @tab X
@item id RoQ @tab X @tab X
@tab Used in Quake III, Jedi Knight 2 and other computer games.
@item IEC61937 encapsulation @tab X @tab X
@item IFF @tab @tab X
@tab Interchange File Format
@item iLBC @tab X @tab X
@item Interplay MVE @tab @tab X
@tab Format used in various Interplay computer games.
@item IV8 @tab @tab X
@tab A format generated by IndigoVision 8000 video server.
@item IVF (On2) @tab X @tab X
@tab A format used by libvpx
@item IRCAM @tab X @tab X
@item LATM @tab X @tab X
@item LMLM4 @tab @tab X
@tab Used by Linux Media Labs MPEG-4 PCI boards
@item LOAS @tab @tab X
@tab contains LATM multiplexed AAC audio
@item LVF @tab @tab X
@item LXF @tab @tab X
@tab VR native stream format, used by Leitch/Harris' video servers.
@item Matroska @tab X @tab X
@item Matroska audio @tab X @tab
@item FFmpeg metadata @tab X @tab X
@tab Metadata in text format.
@item MAXIS XA @tab @tab X
@tab Used in Sim City 3000; file extension .xa.
@item MD Studio @tab @tab X
@item Metal Gear Solid: The Twin Snakes @tab @tab X
@item Megalux Frame @tab @tab X
@tab Used by Megalux Ultimate Paint
@item Mobotix .mxg @tab @tab X
@item Monkey's Audio @tab @tab X
@item Motion Pixels MVI @tab @tab X
@item MOV/QuickTime/MP4 @tab X @tab X
@tab 3GP, 3GP2, PSP, iPod variants supported
@item MP2 @tab X @tab X
@item MP3 @tab X @tab X
@item MPEG-1 System @tab X @tab X
@tab muxed audio and video, VCD format supported
@item MPEG-PS (program stream) @tab X @tab X
@tab also known as @code{VOB} file, SVCD and DVD format supported
@item MPEG-TS (transport stream) @tab X @tab X
@tab also known as DVB Transport Stream
@item MPEG-4 @tab X @tab X
@tab MPEG-4 is a variant of QuickTime.
@item MIME multipart JPEG @tab X @tab
@item MSN TCP webcam @tab @tab X
@tab Used by MSN Messenger webcam streams.
@item MTV @tab @tab X
@item Musepack @tab @tab X
@item Musepack SV8 @tab @tab X
@item Material eXchange Format (MXF) @tab X @tab X
@tab SMPTE 377M, used by D-Cinema, broadcast industry.
@item Material eXchange Format (MXF), D-10 Mapping @tab X @tab X
@tab SMPTE 386M, D-10/IMX Mapping.
@item NC camera feed @tab @tab X
@tab NC (AVIP NC4600) camera streams
@item NIST SPeech HEader REsources @tab @tab X
@item NTT TwinVQ (VQF) @tab @tab X
@tab Nippon Telegraph and Telephone Corporation TwinVQ.
@item Nullsoft Streaming Video @tab @tab X
@item NuppelVideo @tab @tab X
@item NUT @tab X @tab X
@tab NUT Open Container Format
@item Ogg @tab X @tab X
@item Playstation Portable PMP @tab @tab X
@item Portable Voice Format @tab @tab X
@item TechnoTrend PVA @tab @tab X
@tab Used by TechnoTrend DVB PCI boards.
@item QCP @tab @tab X
@item raw ADTS (AAC) @tab X @tab X
@item raw AC-3 @tab X @tab X
@item raw Chinese AVS video @tab X @tab X
@item raw CRI ADX @tab X @tab X
@item raw Dirac @tab X @tab X
@item raw DNxHD @tab X @tab X
@item raw DTS @tab X @tab X
@item raw DTS-HD @tab @tab X
@item raw E-AC-3 @tab X @tab X
@item raw FLAC @tab X @tab X
@item raw GSM @tab @tab X
@item raw H.261 @tab X @tab X
@item raw H.263 @tab X @tab X
@item raw H.264 @tab X @tab X
@item raw Ingenient MJPEG @tab @tab X
@item raw MJPEG @tab X @tab X
@item raw MLP @tab @tab X
@item raw MPEG @tab @tab X
@item raw MPEG-1 @tab @tab X
@item raw MPEG-2 @tab @tab X
@item raw MPEG-4 @tab X @tab X
@item raw NULL @tab X @tab
@item raw video @tab X @tab X
@item raw id RoQ @tab X @tab
@item raw Shorten @tab @tab X
@item raw TAK @tab @tab X
@item raw TrueHD @tab X @tab X
@item raw VC-1 @tab X @tab X
@item raw PCM A-law @tab X @tab X
@item raw PCM mu-law @tab X @tab X
@item raw PCM signed 8 bit @tab X @tab X
@item raw PCM signed 16 bit big-endian @tab X @tab X
@item raw PCM signed 16 bit little-endian @tab X @tab X
@item raw PCM signed 24 bit big-endian @tab X @tab X
@item raw PCM signed 24 bit little-endian @tab X @tab X
@item raw PCM signed 32 bit big-endian @tab X @tab X
@item raw PCM signed 32 bit little-endian @tab X @tab X
@item raw PCM unsigned 8 bit @tab X @tab X
@item raw PCM unsigned 16 bit big-endian @tab X @tab X
@item raw PCM unsigned 16 bit little-endian @tab X @tab X
@item raw PCM unsigned 24 bit big-endian @tab X @tab X
@item raw PCM unsigned 24 bit little-endian @tab X @tab X
@item raw PCM unsigned 32 bit big-endian @tab X @tab X
@item raw PCM unsigned 32 bit little-endian @tab X @tab X
@item raw PCM floating-point 32 bit big-endian @tab X @tab X
@item raw PCM floating-point 32 bit little-endian @tab X @tab X
@item raw PCM floating-point 64 bit big-endian @tab X @tab X
@item raw PCM floating-point 64 bit little-endian @tab X @tab X
@item RDT @tab @tab X
@item REDCODE R3D @tab @tab X
@tab File format used by RED Digital cameras, contains JPEG 2000 frames and PCM audio.
@item RealMedia @tab X @tab X
@item Redirector @tab @tab X
@item RedSpark @tab @tab X
@item Renderware TeXture Dictionary @tab @tab X
@item RL2 @tab @tab X
@tab Audio and video format used in some games by Entertainment Software Partners.
@item RPL/ARMovie @tab @tab X
@item Lego Mindstorms RSO @tab X @tab X
@item RSD @tab @tab X
@item RTMP @tab X @tab X
@tab Output is performed by publishing stream to RTMP server
@item RTP @tab X @tab X
@item RTSP @tab X @tab X
@item SAP @tab X @tab X
@item SBG @tab @tab X
@item SDP @tab @tab X
@item Sega FILM/CPK @tab @tab X
@tab Used in many Sega Saturn console games.
@item Silicon Graphics Movie @tab @tab X
@item Sierra SOL @tab @tab X
@tab .sol files used in Sierra Online games.
@item Sierra VMD @tab @tab X
@tab Used in Sierra CD-ROM games.
@item Smacker @tab @tab X
@tab Multimedia format used by many games.
@item SMJPEG @tab X @tab X
@tab Used in certain Loki game ports.
@item Smush @tab @tab X
@tab Multimedia format used in some LucasArts games.
@item Sony OpenMG (OMA) @tab X @tab X
@tab Audio format used in Sony Sonic Stage and Sony Vegas.
@item Sony PlayStation STR @tab @tab X
@item Sony Wave64 (W64) @tab X @tab X
@item SoX native format @tab X @tab X
@item SUN AU format @tab X @tab X
@item Text files @tab @tab X
@item THP @tab @tab X
@tab Used on the Nintendo GameCube.
@item Tiertex Limited SEQ @tab @tab X
@tab Tiertex .seq files used in the DOS CD-ROM version of the game Flashback.
@item True Audio @tab @tab X
@item VC-1 test bitstream @tab X @tab X
@item Vivo @tab @tab X
@item WAV @tab X @tab X
@item WavPack @tab X @tab X
@item WebM @tab X @tab X
@item Windows Televison (WTV) @tab X @tab X
@item Wing Commander III movie @tab @tab X
@tab Multimedia format used in Origin's Wing Commander III computer game.
@item Westwood Studios audio @tab @tab X
@tab Multimedia format used in Westwood Studios games.
@item Westwood Studios VQA @tab @tab X
@tab Multimedia format used in Westwood Studios games.
@item XMV @tab @tab X
@tab Microsoft video container used in Xbox games.
@item xWMA @tab @tab X
@tab Microsoft audio container used by XAudio 2.
@item eXtended BINary text (XBIN) @tab @tab X
@item YUV4MPEG pipe @tab X @tab X
@item Psygnosis YOP @tab @tab X
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
@section Image Formats
FFmpeg can read and write images for each frame of a video sequence. The
following image formats are supported:
@multitable @columnfractions .4 .1 .1 .4
@item Name @tab Encoding @tab Decoding @tab Comments
@item .Y.U.V @tab X @tab X
@tab one raw file per component
@item animated GIF @tab X @tab X
@item BMP @tab X @tab X
@tab Microsoft BMP image
@item PIX @tab @tab X
@tab PIX is an image format used in the Argonaut BRender engine.
@item DPX @tab X @tab X
@tab Digital Picture Exchange
@item EXR @tab @tab X
@tab OpenEXR
@item JPEG @tab X @tab X
@tab Progressive JPEG is not supported.
@item JPEG 2000 @tab X @tab X
@item JPEG-LS @tab X @tab X
@item LJPEG @tab X @tab
@tab Lossless JPEG
@item PAM @tab X @tab X
@tab PAM is a PNM extension with alpha support.
@item PBM @tab X @tab X
@tab Portable BitMap image
@item PCX @tab X @tab X
@tab PC Paintbrush
@item PGM @tab X @tab X
@tab Portable GrayMap image
@item PGMYUV @tab X @tab X
@tab PGM with U and V components in YUV 4:2:0
@item PIC @tab @tab X
@tab Pictor/PC Paint
@item PNG @tab X @tab X
@item PPM @tab X @tab X
@tab Portable PixelMap image
@item PTX @tab @tab X
@tab V.Flash PTX format
@item SGI @tab X @tab X
@tab SGI RGB image format
@item Sun Rasterfile @tab X @tab X
@tab Sun RAS image format
@item TIFF @tab X @tab X
@tab YUV, JPEG and some extension is not supported yet.
@item Truevision Targa @tab X @tab X
@tab Targa (.TGA) image format
@item WebP @tab @tab X
@tab WebP image format
@item XBM @tab X @tab X
@tab X BitMap image format
@item XFace @tab X @tab X
@tab X-Face image format
@item XWD @tab X @tab X
@tab X Window Dump image format
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
@code{E} means that support is provided through an external library.
@section Video Codecs
@multitable @columnfractions .4 .1 .1 .4
@item Name @tab Encoding @tab Decoding @tab Comments
@item 4X Movie @tab @tab X
@tab Used in certain computer games.
@item 8088flex TMV @tab @tab X
@item A64 multicolor @tab X @tab
@tab Creates video suitable to be played on a commodore 64 (multicolor mode).
@item Amazing Studio PAF Video @tab @tab X
@item American Laser Games MM @tab @tab X
@tab Used in games like Mad Dog McCree.
@item AMV Video @tab X @tab X
@tab Used in Chinese MP3 players.
@item ANSI/ASCII art @tab @tab X
@item Apple Intermediate Codec @tab @tab X
@item Apple MJPEG-B @tab @tab X
@item Apple ProRes @tab X @tab X
@item Apple QuickDraw @tab @tab X
@tab fourcc: qdrw
@item Asus v1 @tab X @tab X
@tab fourcc: ASV1
@item Asus v2 @tab X @tab X
@tab fourcc: ASV2
@item ATI VCR1 @tab @tab X
@tab fourcc: VCR1
@item ATI VCR2 @tab @tab X
@tab fourcc: VCR2
@item Auravision Aura @tab @tab X
@item Auravision Aura 2 @tab @tab X
@item Autodesk Animator Flic video @tab @tab X
@item Autodesk RLE @tab @tab X
@tab fourcc: AASC
@item Avid 1:1 10-bit RGB Packer @tab X @tab X
@tab fourcc: AVrp
@item AVS (Audio Video Standard) video @tab @tab X
@tab Video encoding used by the Creature Shock game.
@item AYUV @tab X @tab X
@tab Microsoft uncompressed packed 4:4:4:4
@item Beam Software VB @tab @tab X
@item Bethesda VID video @tab @tab X
@tab Used in some games from Bethesda Softworks.
@item Bink Video @tab @tab X
@item Bitmap Brothers JV video @tab @tab X
@item y41p Brooktree uncompressed 4:1:1 12-bit @tab X @tab X
@item Brute Force & Ignorance @tab @tab X
@tab Used in the game Flash Traffic: City of Angels.
@item C93 video @tab @tab X
@tab Codec used in Cyberia game.
@item CamStudio @tab @tab X
@tab fourcc: CSCD
@item CD+G @tab @tab X
@tab Video codec for CD+G karaoke disks
@item CDXL @tab @tab X
@tab Amiga CD video codec
@item Chinese AVS video @tab E @tab X
@tab AVS1-P2, JiZhun profile, encoding through external library libxavs
@item Delphine Software International CIN video @tab @tab X
@tab Codec used in Delphine Software International games.
@item Discworld II BMV Video @tab @tab X
@item Canopus Lossless Codec @tab @tab X
@item Cinepak @tab @tab X
@item Cirrus Logic AccuPak @tab X @tab X
@tab fourcc: CLJR
@item CPiA Video Format @tab @tab X
@item Creative YUV (CYUV) @tab @tab X
@item DFA @tab @tab X
@tab Codec used in Chronomaster game.
@item Dirac @tab E @tab X
@tab supported through external library libschroedinger
@item Deluxe Paint Animation @tab @tab X
@item DNxHD @tab X @tab X
@tab aka SMPTE VC3
@item Duck TrueMotion 1.0 @tab @tab X
@tab fourcc: DUCK
@item Duck TrueMotion 2.0 @tab @tab X
@tab fourcc: TM20
@item DV (Digital Video) @tab X @tab X
@item Dxtory capture format @tab @tab X
@item Feeble Files/ScummVM DXA @tab @tab X
@tab Codec originally used in Feeble Files game.
@item Electronic Arts CMV video @tab @tab X
@tab Used in NHL 95 game.
@item Electronic Arts Madcow video @tab @tab X
@item Electronic Arts TGV video @tab @tab X
@item Electronic Arts TGQ video @tab @tab X
@item Electronic Arts TQI video @tab @tab X
@item Escape 124 @tab @tab X
@item Escape 130 @tab @tab X
@item FFmpeg video codec #1 @tab X @tab X
@tab lossless codec (fourcc: FFV1)
@item Flash Screen Video v1 @tab X @tab X
@tab fourcc: FSV1
@item Flash Screen Video v2 @tab X @tab X
@item Flash Video (FLV) @tab X @tab X
@tab Sorenson H.263 used in Flash
@item Forward Uncompressed @tab @tab X
@item Fraps @tab @tab X
@item Go2Webinar @tab @tab X
@tab fourcc: G2M4
@item H.261 @tab X @tab X
@item H.263 / H.263-1996 @tab X @tab X
@item H.263+ / H.263-1998 / H.263 version 2 @tab X @tab X
@item H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 @tab E @tab X
@tab encoding supported through external library libx264
@item HuffYUV @tab X @tab X
@item HuffYUV FFmpeg variant @tab X @tab X
@item IBM Ultimotion @tab @tab X
@tab fourcc: ULTI
@item id Cinematic video @tab @tab X
@tab Used in Quake II.
@item id RoQ video @tab X @tab X
@tab Used in Quake III, Jedi Knight 2, other computer games.
@item IFF ILBM @tab @tab X
@tab IFF interleaved bitmap
@item IFF ByteRun1 @tab @tab X
@tab IFF run length encoded bitmap
@item Intel H.263 @tab @tab X
@item Intel Indeo 2 @tab @tab X
@item Intel Indeo 3 @tab @tab X
@item Intel Indeo 4 @tab @tab X
@item Intel Indeo 5 @tab @tab X
@item Interplay C93 @tab @tab X
@tab Used in the game Cyberia from Interplay.
@item Interplay MVE video @tab @tab X
@tab Used in Interplay .MVE files.
@item J2K @tab X @tab X
@item Karl Morton's video codec @tab @tab X
@tab Codec used in Worms games.
@item Kega Game Video (KGV1) @tab @tab X
@tab Kega emulator screen capture codec.
@item Lagarith @tab @tab X
@item LCL (LossLess Codec Library) MSZH @tab @tab X
@item LCL (LossLess Codec Library) ZLIB @tab E @tab E
@item LOCO @tab @tab X
@item LucasArts Smush @tab @tab X
@tab Used in LucasArts games.
@item lossless MJPEG @tab X @tab X
@item Microsoft ATC Screen @tab @tab X
@tab Also known as Microsoft Screen 3.
@item Microsoft Expression Encoder Screen @tab @tab X
@tab Also known as Microsoft Titanium Screen 2.
@item Microsoft RLE @tab @tab X
@item Microsoft Screen 1 @tab @tab X
@tab Also known as Windows Media Video V7 Screen.
@item Microsoft Screen 2 @tab @tab X
@tab Also known as Windows Media Video V9 Screen.
@item Microsoft Video 1 @tab @tab X
@item Mimic @tab @tab X
@tab Used in MSN Messenger Webcam streams.
@item Miro VideoXL @tab @tab X
@tab fourcc: VIXL
@item MJPEG (Motion JPEG) @tab X @tab X
@item Mobotix MxPEG video @tab @tab X
@item Motion Pixels video @tab @tab X
@item MPEG-1 video @tab X @tab X
@item MPEG-1/2 video XvMC (X-Video Motion Compensation) @tab @tab X
@item MPEG-2 video @tab X @tab X
@item MPEG-4 part 2 @tab X @tab X
@tab libxvidcore can be used alternatively for encoding.
@item MPEG-4 part 2 Microsoft variant version 1 @tab @tab X
@item MPEG-4 part 2 Microsoft variant version 2 @tab X @tab X
@item MPEG-4 part 2 Microsoft variant version 3 @tab X @tab X
@item Nintendo Gamecube THP video @tab @tab X
@item NuppelVideo/RTjpeg @tab @tab X
@tab Video encoding used in NuppelVideo files.
@item On2 VP3 @tab @tab X
@tab still experimental
@item On2 VP5 @tab @tab X
@tab fourcc: VP50
@item On2 VP6 @tab @tab X
@tab fourcc: VP60,VP61,VP62
@item VP8 @tab E @tab X
@tab fourcc: VP80, encoding supported through external library libvpx
@item VP9 @tab E @tab X
@tab encoding supported through external library libvpx
@item Pinnacle TARGA CineWave YUV16 @tab @tab X
@tab fourcc: Y216
@item Prores @tab @tab X
@tab fourcc: apch,apcn,apcs,apco
@item Q-team QPEG @tab @tab X
@tab fourccs: QPEG, Q1.0, Q1.1
@item QuickTime 8BPS video @tab @tab X
@item QuickTime Animation (RLE) video @tab X @tab X
@tab fourcc: 'rle '
@item QuickTime Graphics (SMC) @tab @tab X
@tab fourcc: 'smc '
@item QuickTime video (RPZA) @tab @tab X
@tab fourcc: rpza
@item R10K AJA Kona 10-bit RGB Codec @tab X @tab X
@item R210 Quicktime Uncompressed RGB 10-bit @tab X @tab X
@item Raw Video @tab X @tab X
@item RealVideo 1.0 @tab X @tab X
@item RealVideo 2.0 @tab X @tab X
@item RealVideo 3.0 @tab @tab X
@tab still far from ideal
@item RealVideo 4.0 @tab @tab X
@item Renderware TXD (TeXture Dictionary) @tab @tab X
@tab Texture dictionaries used by the Renderware Engine.
@item RL2 video @tab @tab X
@tab used in some games by Entertainment Software Partners
@item SGI RLE 8-bit @tab @tab X
@item Sierra VMD video @tab @tab X
@tab Used in Sierra VMD files.
@item Silicon Graphics Motion Video Compressor 1 (MVC1) @tab @tab X
@item Silicon Graphics Motion Video Compressor 2 (MVC2) @tab @tab X
@item Smacker video @tab @tab X
@tab Video encoding used in Smacker.
@item SMPTE VC-1 @tab @tab X
@item Snow @tab X @tab X
@tab experimental wavelet codec (fourcc: SNOW)
@item Sony PlayStation MDEC (Motion DECoder) @tab @tab X
@item Sorenson Vector Quantizer 1 @tab X @tab X
@tab fourcc: SVQ1
@item Sorenson Vector Quantizer 3 @tab @tab X
@tab fourcc: SVQ3
@item Sunplus JPEG (SP5X) @tab @tab X
@tab fourcc: SP5X
@item TechSmith Screen Capture Codec @tab @tab X
@tab fourcc: TSCC
@item TechSmith Screen Capture Codec 2 @tab @tab X
@tab fourcc: TSC2
@item Theora @tab E @tab X
@tab encoding supported through external library libtheora
@item Tiertex Limited SEQ video @tab @tab X
@tab Codec used in DOS CD-ROM FlashBack game.
@item Ut Video @tab X @tab X
@item v210 QuickTime uncompressed 4:2:2 10-bit @tab X @tab X
@item v308 QuickTime uncompressed 4:4:4 @tab X @tab X
@item v408 QuickTime uncompressed 4:4:4:4 @tab X @tab X
@item v410 QuickTime uncompressed 4:4:4 10-bit @tab X @tab X
@item VBLE Lossless Codec @tab @tab X
@item VMware Screen Codec / VMware Video @tab @tab X
@tab Codec used in videos captured by VMware.
@item Westwood Studios VQA (Vector Quantized Animation) video @tab @tab X
@item Windows Media Image @tab @tab X
@item Windows Media Video 7 @tab X @tab X
@item Windows Media Video 8 @tab X @tab X
@item Windows Media Video 9 @tab @tab X
@tab not completely working
@item Wing Commander III / Xan @tab @tab X
@tab Used in Wing Commander III .MVE files.
@item Wing Commander IV / Xan @tab @tab X
@tab Used in Wing Commander IV.
@item Winnov WNV1 @tab @tab X
@item WMV7 @tab X @tab X
@item YAMAHA SMAF @tab X @tab X
@item Psygnosis YOP Video @tab @tab X
@item yuv4 @tab X @tab X
@tab libquicktime uncompressed packed 4:2:0
@item ZeroCodec Lossless Video @tab @tab X
@item ZLIB @tab X @tab X
@tab part of LCL, encoder experimental
@item Zip Motion Blocks Video @tab X @tab X
@tab Encoder works only in PAL8.
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
@code{E} means that support is provided through an external library.
@section Audio Codecs
@multitable @columnfractions .4 .1 .1 .4
@item Name @tab Encoding @tab Decoding @tab Comments
@item 8SVX exponential @tab @tab X
@item 8SVX fibonacci @tab @tab X
@item AAC+ @tab E @tab X
@tab encoding supported through external library libaacplus
@item AAC @tab E @tab X
@tab encoding supported through external library libfaac and libvo-aacenc
@item AC-3 @tab IX @tab X
@item ADPCM 4X Movie @tab @tab X
@item ADPCM CDROM XA @tab @tab X
@item ADPCM Creative Technology @tab @tab X
@tab 16 -> 4, 8 -> 4, 8 -> 3, 8 -> 2
@item ADPCM Electronic Arts @tab @tab X
@tab Used in various EA titles.
@item ADPCM Electronic Arts Maxis CDROM XS @tab @tab X
@tab Used in Sim City 3000.
@item ADPCM Electronic Arts R1 @tab @tab X
@item ADPCM Electronic Arts R2 @tab @tab X
@item ADPCM Electronic Arts R3 @tab @tab X
@item ADPCM Electronic Arts XAS @tab @tab X
@item ADPCM G.722 @tab X @tab X
@item ADPCM G.726 @tab X @tab X
@item ADPCM IMA AMV @tab @tab X
@tab Used in AMV files
@item ADPCM IMA Electronic Arts EACS @tab @tab X
@item ADPCM IMA Electronic Arts SEAD @tab @tab X
@item ADPCM IMA Funcom @tab @tab X
@item ADPCM IMA QuickTime @tab X @tab X
@item ADPCM IMA Loki SDL MJPEG @tab @tab X
@item ADPCM IMA WAV @tab X @tab X
@item ADPCM IMA Westwood @tab @tab X
@item ADPCM ISS IMA @tab @tab X
@tab Used in FunCom games.
@item ADPCM IMA Dialogic @tab @tab X
@item ADPCM IMA Duck DK3 @tab @tab X
@tab Used in some Sega Saturn console games.
@item ADPCM IMA Duck DK4 @tab @tab X
@tab Used in some Sega Saturn console games.
@item ADPCM IMA Radical @tab @tab X
@item ADPCM Microsoft @tab X @tab X
@item ADPCM MS IMA @tab X @tab X
@item ADPCM Nintendo Gamecube AFC @tab @tab X
@item ADPCM Nintendo Gamecube DTK @tab @tab X
@item ADPCM Nintendo Gamecube THP @tab @tab X
@item ADPCM QT IMA @tab X @tab X
@item ADPCM SEGA CRI ADX @tab X @tab X
@tab Used in Sega Dreamcast games.
@item ADPCM Shockwave Flash @tab X @tab X
@item ADPCM Sound Blaster Pro 2-bit @tab @tab X
@item ADPCM Sound Blaster Pro 2.6-bit @tab @tab X
@item ADPCM Sound Blaster Pro 4-bit @tab @tab X
@item ADPCM Westwood Studios IMA @tab @tab X
@tab Used in Westwood Studios games like Command and Conquer.
@item ADPCM Yamaha @tab X @tab X
@item AMR-NB @tab E @tab X
@tab encoding supported through external library libopencore-amrnb
@item AMR-WB @tab E @tab X
@tab encoding supported through external library libvo-amrwbenc
@item Amazing Studio PAF Audio @tab @tab X
@item Apple lossless audio @tab X @tab X
@tab QuickTime fourcc 'alac'
@item ATRAC1 @tab @tab X
@item ATRAC3 @tab @tab X
@item Bink Audio @tab @tab X
@tab Used in Bink and Smacker files in many games.
@item CELT @tab @tab E
@tab decoding supported through external library libcelt
@item Delphine Software International CIN audio @tab @tab X
@tab Codec used in Delphine Software International games.
@item Discworld II BMV Audio @tab @tab X
@item COOK @tab @tab X
@tab All versions except 5.1 are supported.
@item DCA (DTS Coherent Acoustics) @tab X @tab X
@item DPCM id RoQ @tab X @tab X
@tab Used in Quake III, Jedi Knight 2 and other computer games.
@item DPCM Interplay @tab @tab X
@tab Used in various Interplay computer games.
@item DPCM Sierra Online @tab @tab X
@tab Used in Sierra Online game audio files.
@item DPCM Sol @tab @tab X
@item DPCM Xan @tab @tab X
@tab Used in Origin's Wing Commander IV AVI files.
@item DSP Group TrueSpeech @tab @tab X
@item DV audio @tab @tab X
@item Enhanced AC-3 @tab X @tab X
@item EVRC (Enhanced Variable Rate Codec) @tab @tab X
@item FLAC (Free Lossless Audio Codec) @tab X @tab IX
@item G.723.1 @tab X @tab X
@item G.729 @tab @tab X
@item GSM @tab E @tab X
@tab encoding supported through external library libgsm
@item GSM Microsoft variant @tab E @tab X
@tab encoding supported through external library libgsm
@item IAC (Indeo Audio Coder) @tab @tab X
@item iLBC (Internet Low Bitrate Codec) @tab E @tab E
@tab encoding and decoding supported through external library libilbc
@item IMC (Intel Music Coder) @tab @tab X
@item MACE (Macintosh Audio Compression/Expansion) 3:1 @tab @tab X
@item MACE (Macintosh Audio Compression/Expansion) 6:1 @tab @tab X
@item MLP (Meridian Lossless Packing) @tab @tab X
@tab Used in DVD-Audio discs.
@item Monkey's Audio @tab @tab X
@item MP1 (MPEG audio layer 1) @tab @tab IX
@item MP2 (MPEG audio layer 2) @tab IX @tab IX
@tab libtwolame can be used alternatively for encoding.
@item MP3 (MPEG audio layer 3) @tab E @tab IX
@tab encoding supported through external library LAME, ADU MP3 and MP3onMP4 also supported
@item MPEG-4 Audio Lossless Coding (ALS) @tab @tab X
@item Musepack SV7 @tab @tab X
@item Musepack SV8 @tab @tab X
@item Nellymoser Asao @tab X @tab X
@item Opus @tab E @tab E
@tab supported through external library libopus
@item PCM A-law @tab X @tab X
@item PCM mu-law @tab X @tab X
@item PCM signed 8-bit planar @tab X @tab X
@item PCM signed 16-bit big-endian planar @tab X @tab X
@item PCM signed 16-bit little-endian planar @tab X @tab X
@item PCM signed 24-bit little-endian planar @tab X @tab X
@item PCM signed 32-bit little-endian planar @tab X @tab X
@item PCM 32-bit floating point big-endian @tab X @tab X
@item PCM 32-bit floating point little-endian @tab X @tab X
@item PCM 64-bit floating point big-endian @tab X @tab X
@item PCM 64-bit floating point little-endian @tab X @tab X
@item PCM D-Cinema audio signed 24-bit @tab X @tab X
@item PCM signed 8-bit @tab X @tab X
@item PCM signed 16-bit big-endian @tab X @tab X
@item PCM signed 16-bit little-endian @tab X @tab X
@item PCM signed 24-bit big-endian @tab X @tab X
@item PCM signed 24-bit little-endian @tab X @tab X
@item PCM signed 32-bit big-endian @tab X @tab X
@item PCM signed 32-bit little-endian @tab X @tab X
@item PCM signed 16/20/24-bit big-endian in MPEG-TS @tab @tab X
@item PCM unsigned 8-bit @tab X @tab X
@item PCM unsigned 16-bit big-endian @tab X @tab X
@item PCM unsigned 16-bit little-endian @tab X @tab X
@item PCM unsigned 24-bit big-endian @tab X @tab X
@item PCM unsigned 24-bit little-endian @tab X @tab X
@item PCM unsigned 32-bit big-endian @tab X @tab X
@item PCM unsigned 32-bit little-endian @tab X @tab X
@item PCM Zork @tab @tab X
@item QCELP / PureVoice @tab @tab X
@item QDesign Music Codec 2 @tab @tab X
@tab There are still some distortions.
@item RealAudio 1.0 (14.4K) @tab X @tab X
@tab Real 14400 bit/s codec
@item RealAudio 2.0 (28.8K) @tab @tab X
@tab Real 28800 bit/s codec
@item RealAudio 3.0 (dnet) @tab IX @tab X
@tab Real low bitrate AC-3 codec
@item RealAudio Lossless @tab @tab X
@item RealAudio SIPR / ACELP.NET @tab @tab X
@item Shorten @tab @tab X
@item Sierra VMD audio @tab @tab X
@tab Used in Sierra VMD files.
@item Smacker audio @tab @tab X
@item SMPTE 302M AES3 audio @tab X @tab X
@item Sonic @tab X @tab X
@tab experimental codec
@item Sonic lossless @tab X @tab X
@tab experimental codec
@item Speex @tab E @tab E
@tab supported through external library libspeex
@item TAK (Tom's lossless Audio Kompressor) @tab @tab X
@item True Audio (TTA) @tab X @tab X
@item TrueHD @tab @tab X
@tab Used in HD-DVD and Blu-Ray discs.
@item TwinVQ (VQF flavor) @tab @tab X
@item VIMA @tab @tab X
@tab Used in LucasArts SMUSH animations.
@item Vorbis @tab E @tab X
@tab A native but very primitive encoder exists.
@item Voxware MetaSound @tab @tab X
@tab imperfect and incomplete support
@item WavPack @tab X @tab X
@item Westwood Audio (SND1) @tab @tab X
@item Windows Media Audio 1 @tab X @tab X
@item Windows Media Audio 2 @tab X @tab X
@item Windows Media Audio Lossless @tab @tab X
@item Windows Media Audio Pro @tab @tab X
@item Windows Media Audio Voice @tab @tab X
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
@code{E} means that support is provided through an external library.
@code{I} means that an integer-only version is available, too (ensures high
performance on systems without hardware floating point support).
@section Subtitle Formats
@multitable @columnfractions .4 .1 .1 .1 .1
@item Name @tab Muxing @tab Demuxing @tab Encoding @tab Decoding
@item 3GPP Timed Text @tab @tab @tab X @tab X
@item AQTitle @tab @tab X @tab @tab X
@item DVB @tab X @tab X @tab X @tab X
@item DVB teletext @tab @tab X @tab @tab E
@item DVD @tab X @tab X @tab X @tab X
@item JACOsub @tab X @tab X @tab @tab X
@item MicroDVD @tab X @tab X @tab @tab X
@item MPL2 @tab @tab X @tab @tab X
@item MPsub (MPlayer) @tab @tab X @tab @tab X
@item PGS @tab @tab @tab @tab X
@item PJS (Phoenix) @tab @tab X @tab @tab X
@item RealText @tab @tab X @tab @tab X
@item SAMI @tab @tab X @tab @tab X
@item SSA/ASS @tab X @tab X @tab X @tab X
@item SubRip (SRT) @tab X @tab X @tab X @tab X
@item SubViewer v1 @tab @tab X @tab @tab X
@item SubViewer @tab @tab X @tab @tab X
@item TED Talks captions @tab @tab X @tab @tab X
@item VobSub (IDX+SUB) @tab @tab X @tab @tab X
@item VPlayer @tab @tab X @tab @tab X
@item WebVTT @tab X @tab X @tab @tab X
@item XSUB @tab @tab @tab X @tab X
@end multitable
@code{X} means that the feature is supported.
@code{E} means that support is provided through an external library.
@section Network Protocols
@multitable @columnfractions .4 .1
@item Name @tab Support
@item file @tab X
@item Gopher @tab X
@item HLS @tab X
@item HTTP @tab X
@item HTTPS @tab X
@item MMSH @tab X
@item MMST @tab X
@item pipe @tab X
@item RTMP @tab X
@item RTMPE @tab X
@item RTMPS @tab X
@item RTMPT @tab X
@item RTMPTE @tab X
@item RTMPTS @tab X
@item RTP @tab X
@item SCTP @tab X
@item TCP @tab X
@item TLS @tab X
@item UDP @tab X
@end multitable
@code{X} means that the protocol is supported.
@code{E} means that support is provided through an external library.
@section Input/Output Devices
@multitable @columnfractions .4 .1 .1
@item Name @tab Input @tab Output
@item ALSA @tab X @tab X
@item BKTR @tab X @tab
@item caca @tab @tab X
@item DV1394 @tab X @tab
@item Lavfi virtual device @tab X @tab
@item Linux framebuffer @tab X @tab
@item JACK @tab X @tab
@item LIBCDIO @tab X
@item LIBDC1394 @tab X @tab
@item OpenAL @tab X
@item OSS @tab X @tab X
@item Pulseaudio @tab X @tab
@item SDL @tab @tab X
@item Video4Linux2 @tab X @tab X
@item VfW capture @tab X @tab
@item X11 grabbing @tab X @tab
@end multitable
@code{X} means that input/output is supported.
@section Timecode
@multitable @columnfractions .4 .1 .1
@item Codec/format @tab Read @tab Write
@item AVI @tab X @tab X
@item DV @tab X @tab X
@item GXF @tab X @tab X
@item MOV @tab X @tab X
@item MPEG1/2 @tab X @tab X
@item MXF @tab X @tab X
@end multitable
@bye

/contrib/sdk/sources/ffmpeg/doc/git-howto.texi
0,0 → 1,415
\input texinfo @c -*- texinfo -*-
@settitle Using git to develop FFmpeg
@titlepage
@center @titlefont{Using git to develop FFmpeg}
@end titlepage
@top
@contents
@chapter Introduction
This document aims in giving some quick references on a set of useful git
commands. You should always use the extensive and detailed documentation
provided directly by git:
@example
git --help
man git
@end example
shows you the available subcommands,
@example
git <command> --help
man git-<command>
@end example
shows information about the subcommand <command>.
Additional information could be found on the
@url{http://gitref.org, Git Reference} website
For more information about the Git project, visit the
@url{http://git-scm.com/, Git website}
Consult these resources whenever you have problems, they are quite exhaustive.
What follows now is a basic introduction to Git and some FFmpeg-specific
guidelines to ease the contribution to the project
@chapter Basics Usage
@section Get GIT
You can get git from @url{http://git-scm.com/}
Most distribution and operating system provide a package for it.
@section Cloning the source tree
@example
git clone git://source.ffmpeg.org/ffmpeg <target>
@end example
This will put the FFmpeg sources into the directory @var{<target>}.
@example
git clone git@@source.ffmpeg.org:ffmpeg <target>
@end example
This will put the FFmpeg sources into the directory @var{<target>} and let
you push back your changes to the remote repository.
Make sure that you do not have Windows line endings in your checkouts,
otherwise you may experience spurious compilation failures. One way to
achieve this is to run
@example
git config --global core.autocrlf false
@end example
@section Updating the source tree to the latest revision
@example
git pull (--rebase)
@end example
pulls in the latest changes from the tracked branch. The tracked branch
can be remote. By default the master branch tracks the branch master in
the remote origin.
@float IMPORTANT
@command{--rebase} (see below) is recommended.
@end float
@section Rebasing your local branches
@example
git pull --rebase
@end example
fetches the changes from the main repository and replays your local commits
over it. This is required to keep all your local changes at the top of
FFmpeg's master tree. The master tree will reject pushes with merge commits.
@section Adding/removing files/directories
@example
git add [-A] <filename/dirname>
git rm [-r] <filename/dirname>
@end example
GIT needs to get notified of all changes you make to your working
directory that makes files appear or disappear.
Line moves across files are automatically tracked.
@section Showing modifications
@example
git diff <filename(s)>
@end example
will show all local modifications in your working directory as unified diff.
@section Inspecting the changelog
@example
git log <filename(s)>
@end example
You may also use the graphical tools like gitview or gitk or the web
interface available at http://source.ffmpeg.org/
@section Checking source tree status
@example
git status
@end example
detects all the changes you made and lists what actions will be taken in case
of a commit (additions, modifications, deletions, etc.).
@section Committing
@example
git diff --check
@end example
to double check your changes before committing them to avoid trouble later
on. All experienced developers do this on each and every commit, no matter
how small.
Every one of them has been saved from looking like a fool by this many times.
It's very easy for stray debug output or cosmetic modifications to slip in,
please avoid problems through this extra level of scrutiny.
For cosmetics-only commits you should get (almost) empty output from
@example
git diff -w -b <filename(s)>
@end example
Also check the output of
@example
git status
@end example
to make sure you don't have untracked files or deletions.
@example
git add [-i|-p|-A] <filenames/dirnames>
@end example
Make sure you have told git your name and email address
@example
git config --global user.name "My Name"
git config --global user.email my@@email.invalid
@end example
Use @var{--global} to set the global configuration for all your git checkouts.
Git will select the changes to the files for commit. Optionally you can use
the interactive or the patch mode to select hunk by hunk what should be
added to the commit.
@example
git commit
@end example
Git will commit the selected changes to your current local branch.
You will be prompted for a log message in an editor, which is either
set in your personal configuration file through
@example
git config --global core.editor
@end example
or set by one of the following environment variables:
@var{GIT_EDITOR}, @var{VISUAL} or @var{EDITOR}.
Log messages should be concise but descriptive. Explain why you made a change,
what you did will be obvious from the changes themselves most of the time.
Saying just "bug fix" or "10l" is bad. Remember that people of varying skill
levels look at and educate themselves while reading through your code. Don't
include filenames in log messages, Git provides that information.
Possibly make the commit message have a terse, descriptive first line, an
empty line and then a full description. The first line will be used to name
the patch by git format-patch.
@section Preparing a patchset
@example
git format-patch <commit> [-o directory]
@end example
will generate a set of patches for each commit between @var{<commit>} and
current @var{HEAD}. E.g.
@example
git format-patch origin/master
@end example
will generate patches for all commits on current branch which are not
present in upstream.
A useful shortcut is also
@example
git format-patch -n
@end example
which will generate patches from last @var{n} commits.
By default the patches are created in the current directory.
@section Sending patches for review
@example
git send-email <commit list|directory>
@end example
will send the patches created by @command{git format-patch} or directly
generates them. All the email fields can be configured in the global/local
configuration or overridden by command line.
Note that this tool must often be installed separately (e.g. @var{git-email}
package on Debian-based distros).
@section Renaming/moving/copying files or contents of files
Git automatically tracks such changes, making those normal commits.
@example
mv/cp path/file otherpath/otherfile
git add [-A] .
git commit
@end example
@chapter Git configuration
In order to simplify a few workflows, it is advisable to configure both
your personal Git installation and your local FFmpeg repository.
@section Personal Git installation
Add the following to your @file{~/.gitconfig} to help @command{git send-email}
and @command{git format-patch} detect renames:
@example
[diff]
renames = copy
@end example
@section Repository configuration
In order to have @command{git send-email} automatically send patches
to the ffmpeg-devel mailing list, add the following stanza
to @file{/path/to/ffmpeg/repository/.git/config}:
@example
[sendemail]
to = ffmpeg-devel@@ffmpeg.org
@end example
@chapter FFmpeg specific
@section Reverting broken commits
@example
git reset <commit>
@end example
@command{git reset} will uncommit the changes till @var{<commit>} rewriting
the current branch history.
@example
git commit --amend
@end example
allows to amend the last commit details quickly.
@example
git rebase -i origin/master
@end example
will replay local commits over the main repository allowing to edit, merge
or remove some of them in the process.
@float NOTE
@command{git reset}, @command{git commit --amend} and @command{git rebase}
rewrite history, so you should use them ONLY on your local or topic branches.
The main repository will reject those changes.
@end float
@example
git revert <commit>
@end example
@command{git revert} will generate a revert commit. This will not make the
faulty commit disappear from the history.
@section Pushing changes to remote trees
@example
git push
@end example
Will push the changes to the default remote (@var{origin}).
Git will prevent you from pushing changes if the local and remote trees are
out of sync. Refer to and to sync the local tree.
@example
git remote add <name> <url>
@end example
Will add additional remote with a name reference, it is useful if you want
to push your local branch for review on a remote host.
@example
git push <remote> <refspec>
@end example
Will push the changes to the @var{<remote>} repository.
Omitting @var{<refspec>} makes @command{git push} update all the remote
branches matching the local ones.
@section Finding a specific svn revision
Since version 1.7.1 git supports @var{:/foo} syntax for specifying commits
based on a regular expression. see man gitrevisions
@example
git show :/'as revision 23456'
@end example
will show the svn changeset @var{r23456}. With older git versions searching in
the @command{git log} output is the easiest option (especially if a pager with
search capabilities is used).
This commit can be checked out with
@example
git checkout -b svn_23456 :/'as revision 23456'
@end example
or for git < 1.7.1 with
@example
git checkout -b svn_23456 $SHA1
@end example
where @var{$SHA1} is the commit hash from the @command{git log} output.
@chapter pre-push checklist
Once you have a set of commits that you feel are ready for pushing,
work through the following checklist to doublecheck everything is in
proper order. This list tries to be exhaustive. In case you are just
pushing a typo in a comment, some of the steps may be unnecessary.
Apply your common sense, but if in doubt, err on the side of caution.
First, make sure that the commits and branches you are going to push
match what you want pushed and that nothing is missing, extraneous or
wrong. You can see what will be pushed by running the git push command
with --dry-run first. And then inspecting the commits listed with
@command{git log -p 1234567..987654}. The @command{git status} command
may help in finding local changes that have been forgotten to be added.
Next let the code pass through a full run of our testsuite.
@itemize
@item @command{make distclean}
@item @command{/path/to/ffmpeg/configure}
@item @command{make check}
@item if fate fails due to missing samples run @command{make fate-rsync} and retry
@end itemize
Make sure all your changes have been checked before pushing them, the
testsuite only checks against regressions and that only to some extend. It does
obviously not check newly added features/code to be working unless you have
added a test for that (which is recommended).
Also note that every single commit should pass the test suite, not just
the result of a series of patches.
Once everything passed, push the changes to your public ffmpeg clone and post a
merge request to ffmpeg-devel. You can also push them directly but this is not
recommended.
@chapter Server Issues
Contact the project admins @email{root@@ffmpeg.org} if you have technical
problems with the GIT server.

/contrib/sdk/sources/ffmpeg/doc/git-howto.txt
0,0 → 1,273
About Git write access:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Before everything else, you should know how to use GIT properly.
Luckily Git comes with excellent documentation.
git --help
man git
shows you the available subcommands,
git <command> --help
man git-<command>
shows information about the subcommand <command>.
The most comprehensive manual is the website Git Reference
http://gitref.org/
For more information about the Git project, visit
http://git-scm.com/
Consult these resources whenever you have problems, they are quite exhaustive.
You do not need a special username or password.
All you need is to provide a ssh public key to the Git server admin.
What follows now is a basic introduction to Git and some FFmpeg-specific
guidelines. Read it at least once, if you are granted commit privileges to the
FFmpeg project you are expected to be familiar with these rules.
I. BASICS:
==========
0. Get GIT:
Most distributions have a git package, if not
You can get git from http://git-scm.com/
1. Cloning the source tree:
git clone git://source.ffmpeg.org/ffmpeg <target>
This will put the FFmpeg sources into the directory <target>.
git clone git@source.ffmpeg.org:ffmpeg <target>
This will put the FFmpeg sources into the directory <target> and let
you push back your changes to the remote repository.
2. Updating the source tree to the latest revision:
git pull (--ff-only)
pulls in the latest changes from the tracked branch. The tracked branch
can be remote. By default the master branch tracks the branch master in
the remote origin.
Caveat: Since merge commits are forbidden at least for the initial
months of git --ff-only or --rebase (see below) are recommended.
--ff-only will fail and not create merge commits if your branch
has diverged (has a different history) from the tracked branch.
2.a Rebasing your local branches:
git pull --rebase
fetches the changes from the main repository and replays your local commits
over it. This is required to keep all your local changes at the top of
FFmpeg's master tree. The master tree will reject pushes with merge commits.
3. Adding/removing files/directories:
git add [-A] <filename/dirname>
git rm [-r] <filename/dirname>
GIT needs to get notified of all changes you make to your working
directory that makes files appear or disappear.
Line moves across files are automatically tracked.
4. Showing modifications:
git diff <filename(s)>
will show all local modifications in your working directory as unified diff.
5. Inspecting the changelog:
git log <filename(s)>
You may also use the graphical tools like gitview or gitk or the web
interface available at http://source.ffmpeg.org
6. Checking source tree status:
git status
detects all the changes you made and lists what actions will be taken in case
of a commit (additions, modifications, deletions, etc.).
7. Committing:
git diff --check
to double check your changes before committing them to avoid trouble later
on. All experienced developers do this on each and every commit, no matter
how small.
Every one of them has been saved from looking like a fool by this many times.
It's very easy for stray debug output or cosmetic modifications to slip in,
please avoid problems through this extra level of scrutiny.
For cosmetics-only commits you should get (almost) empty output from
git diff -w -b <filename(s)>
Also check the output of
git status
to make sure you don't have untracked files or deletions.
git add [-i|-p|-A] <filenames/dirnames>
Make sure you have told git your name and email address, e.g. by running
git config --global user.name "My Name"
git config --global user.email my@email.invalid
(--global to set the global configuration for all your git checkouts).
Git will select the changes to the files for commit. Optionally you can use
the interactive or the patch mode to select hunk by hunk what should be
added to the commit.
git commit
Git will commit the selected changes to your current local branch.
You will be prompted for a log message in an editor, which is either
set in your personal configuration file through
git config core.editor
or set by one of the following environment variables:
GIT_EDITOR, VISUAL or EDITOR.
Log messages should be concise but descriptive. Explain why you made a change,
what you did will be obvious from the changes themselves most of the time.
Saying just "bug fix" or "10l" is bad. Remember that people of varying skill
levels look at and educate themselves while reading through your code. Don't
include filenames in log messages, Git provides that information.
Possibly make the commit message have a terse, descriptive first line, an
empty line and then a full description. The first line will be used to name
the patch by git format-patch.
8. Renaming/moving/copying files or contents of files:
Git automatically tracks such changes, making those normal commits.
mv/cp path/file otherpath/otherfile
git add [-A] .
git commit
Do not move, rename or copy files of which you are not the maintainer without
discussing it on the mailing list first!
9. Reverting broken commits
git revert <commit>
git revert will generate a revert commit. This will not make the faulty
commit disappear from the history.
git reset <commit>
git reset will uncommit the changes till <commit> rewriting the current
branch history.
git commit --amend
allows to amend the last commit details quickly.
git rebase -i origin/master
will replay local commits over the main repository allowing to edit,
merge or remove some of them in the process.
Note that the reset, commit --amend and rebase rewrite history, so you
should use them ONLY on your local or topic branches.
The main repository will reject those changes.
10. Preparing a patchset.
git format-patch <commit> [-o directory]
will generate a set of patches for each commit between <commit> and
current HEAD. E.g.
git format-patch origin/master
will generate patches for all commits on current branch which are not
present in upstream.
A useful shortcut is also
git format-patch -n
which will generate patches from last n commits.
By default the patches are created in the current directory.
11. Sending patches for review
git send-email <commit list|directory>
will send the patches created by git format-patch or directly generates
them. All the email fields can be configured in the global/local
configuration or overridden by command line.
Note that this tool must often be installed separately (e.g. git-email
package on Debian-based distros).
12. Pushing changes to remote trees
git push
Will push the changes to the default remote (origin).
Git will prevent you from pushing changes if the local and remote trees are
out of sync. Refer to 2 and 2.a to sync the local tree.
git remote add <name> <url>
Will add additional remote with a name reference, it is useful if you want
to push your local branch for review on a remote host.
git push <remote> <refspec>
Will push the changes to the remote repository. Omitting refspec makes git
push update all the remote branches matching the local ones.
13. Finding a specific svn revision
Since version 1.7.1 git supports ':/foo' syntax for specifying commits
based on a regular expression. see man gitrevisions
git show :/'as revision 23456'
will show the svn changeset r23456. With older git versions searching in
the git log output is the easiest option (especially if a pager with
search capabilities is used).
This commit can be checked out with
git checkout -b svn_23456 :/'as revision 23456'
or for git < 1.7.1 with
git checkout -b svn_23456 $SHA1
where $SHA1 is the commit SHA1 from the 'git log' output.
Contact the project admins <root at ffmpeg dot org> if you have technical
problems with the GIT server.

/contrib/sdk/sources/ffmpeg/doc/indevs.texi
0,0 → 1,763
@chapter Input Devices
@c man begin INPUT DEVICES
Input devices are configured elements in FFmpeg which allow to access
the data coming from a multimedia device attached to your system.
When you configure your FFmpeg build, all the supported input devices
are enabled by default. You can list all available ones using the
configure option "--list-indevs".
You can disable all the input devices using the configure option
"--disable-indevs", and selectively enable an input device using the
option "--enable-indev=@var{INDEV}", or you can disable a particular
input device using the option "--disable-indev=@var{INDEV}".
The option "-formats" of the ff* tools will display the list of
supported input devices (amongst the demuxers).
A description of the currently available input devices follows.
@section alsa
ALSA (Advanced Linux Sound Architecture) input device.
To enable this input device during configuration you need libasound
installed on your system.
This device allows capturing from an ALSA device. The name of the
device to capture has to be an ALSA card identifier.
An ALSA identifier has the syntax:
@example
hw:@var{CARD}[,@var{DEV}[,@var{SUBDEV}]]
@end example
where the @var{DEV} and @var{SUBDEV} components are optional.
The three arguments (in order: @var{CARD},@var{DEV},@var{SUBDEV})
specify card number or identifier, device number and subdevice number
(-1 means any).
To see the list of cards currently recognized by your system check the
files @file{/proc/asound/cards} and @file{/proc/asound/devices}.
For example to capture with @command{ffmpeg} from an ALSA device with
card id 0, you may run the command:
@example
ffmpeg -f alsa -i hw:0 alsaout.wav
@end example
For more information see:
@url{http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html}
@section bktr
BSD video input device.
@section dshow
Windows DirectShow input device.
DirectShow support is enabled when FFmpeg is built with the mingw-w64 project.
Currently only audio and video devices are supported.
Multiple devices may be opened as separate inputs, but they may also be
opened on the same input, which should improve synchronism between them.
The input name should be in the format:
@example
@var{TYPE}=@var{NAME}[:@var{TYPE}=@var{NAME}]
@end example
where @var{TYPE} can be either @var{audio} or @var{video},
and @var{NAME} is the device's name.
@subsection Options
If no options are specified, the device's defaults are used.
If the device does not support the requested options, it will
fail to open.
@table @option
@item video_size
Set the video size in the captured video.
@item framerate
Set the frame rate in the captured video.
@item sample_rate
Set the sample rate (in Hz) of the captured audio.
@item sample_size
Set the sample size (in bits) of the captured audio.
@item channels
Set the number of channels in the captured audio.
@item list_devices
If set to @option{true}, print a list of devices and exit.
@item list_options
If set to @option{true}, print a list of selected device's options
and exit.
@item video_device_number
Set video device number for devices with same name (starts at 0,
defaults to 0).
@item audio_device_number
Set audio device number for devices with same name (starts at 0,
defaults to 0).
@item pixel_format
Select pixel format to be used by DirectShow. This may only be set when
the video codec is not set or set to rawvideo.
@item audio_buffer_size
Set audio device buffer size in milliseconds (which can directly
impact latency, depending on the device).
Defaults to using the audio device's
default buffer size (typically some multiple of 500ms).
Setting this value too low can degrade performance.
See also
@url{http://msdn.microsoft.com/en-us/library/windows/desktop/dd377582(v=vs.85).aspx}
@end table
@subsection Examples
@itemize
@item
Print the list of DirectShow supported devices and exit:
@example
$ ffmpeg -list_devices true -f dshow -i dummy
@end example
@item
Open video device @var{Camera}:
@example
$ ffmpeg -f dshow -i video="Camera"
@end example
@item
Open second video device with name @var{Camera}:
@example
$ ffmpeg -f dshow -video_device_number 1 -i video="Camera"
@end example
@item
Open video device @var{Camera} and audio device @var{Microphone}:
@example
$ ffmpeg -f dshow -i video="Camera":audio="Microphone"
@end example
@item
Print the list of supported options in selected device and exit:
@example
$ ffmpeg -list_options true -f dshow -i video="Camera"
@end example
@end itemize
@section dv1394
Linux DV 1394 input device.
@section fbdev
Linux framebuffer input device.
The Linux framebuffer is a graphic hardware-independent abstraction
layer to show graphics on a computer monitor, typically on the
console. It is accessed through a file device node, usually
@file{/dev/fb0}.
For more detailed information read the file
Documentation/fb/framebuffer.txt included in the Linux source tree.
To record from the framebuffer device @file{/dev/fb0} with
@command{ffmpeg}:
@example
ffmpeg -f fbdev -r 10 -i /dev/fb0 out.avi
@end example
You can take a single screenshot image with the command:
@example
ffmpeg -f fbdev -frames:v 1 -r 1 -i /dev/fb0 screenshot.jpeg
@end example
See also @url{http://linux-fbdev.sourceforge.net/}, and fbset(1).
@section iec61883
FireWire DV/HDV input device using libiec61883.
To enable this input device, you need libiec61883, libraw1394 and
libavc1394 installed on your system. Use the configure option
@code{--enable-libiec61883} to compile with the device enabled.
The iec61883 capture device supports capturing from a video device
connected via IEEE1394 (FireWire), using libiec61883 and the new Linux
FireWire stack (juju). This is the default DV/HDV input method in Linux
Kernel 2.6.37 and later, since the old FireWire stack was removed.
Specify the FireWire port to be used as input file, or "auto"
to choose the first port connected.
@subsection Options
@table @option
@item dvtype
Override autodetection of DV/HDV. This should only be used if auto
detection does not work, or if usage of a different device type
should be prohibited. Treating a DV device as HDV (or vice versa) will
not work and result in undefined behavior.
The values @option{auto}, @option{dv} and @option{hdv} are supported.
@item dvbuffer
Set maxiumum size of buffer for incoming data, in frames. For DV, this
is an exact value. For HDV, it is not frame exact, since HDV does
not have a fixed frame size.
@item dvguid
Select the capture device by specifying it's GUID. Capturing will only
be performed from the specified device and fails if no device with the
given GUID is found. This is useful to select the input if multiple
devices are connected at the same time.
Look at /sys/bus/firewire/devices to find out the GUIDs.
@end table
@subsection Examples
@itemize
@item
Grab and show the input of a FireWire DV/HDV device.
@example
ffplay -f iec61883 -i auto
@end example
@item
Grab and record the input of a FireWire DV/HDV device,
using a packet buffer of 100000 packets if the source is HDV.
@example
ffmpeg -f iec61883 -i auto -hdvbuffer 100000 out.mpg
@end example
@end itemize
@section jack
JACK input device.
To enable this input device during configuration you need libjack
installed on your system.
A JACK input device creates one or more JACK writable clients, one for
each audio channel, with name @var{client_name}:input_@var{N}, where
@var{client_name} is the name provided by the application, and @var{N}
is a number which identifies the channel.
Each writable client will send the acquired data to the FFmpeg input
device.
Once you have created one or more JACK readable clients, you need to
connect them to one or more JACK writable clients.
To connect or disconnect JACK clients you can use the @command{jack_connect}
and @command{jack_disconnect} programs, or do it through a graphical interface,
for example with @command{qjackctl}.
To list the JACK clients and their properties you can invoke the command
@command{jack_lsp}.
Follows an example which shows how to capture a JACK readable client
with @command{ffmpeg}.
@example
# Create a JACK writable client with name "ffmpeg".
$ ffmpeg -f jack -i ffmpeg -y out.wav
# Start the sample jack_metro readable client.
$ jack_metro -b 120 -d 0.2 -f 4000
# List the current JACK clients.
$ jack_lsp -c
system:capture_1
system:capture_2
system:playback_1
system:playback_2
ffmpeg:input_1
metro:120_bpm
# Connect metro to the ffmpeg writable client.
$ jack_connect metro:120_bpm ffmpeg:input_1
@end example
For more information read:
@url{http://jackaudio.org/}
@section lavfi
Libavfilter input virtual device.
This input device reads data from the open output pads of a libavfilter
filtergraph.
For each filtergraph open output, the input device will create a
corresponding stream which is mapped to the generated output. Currently
only video data is supported. The filtergraph is specified through the
option @option{graph}.
@subsection Options
@table @option
@item graph
Specify the filtergraph to use as input. Each video open output must be
labelled by a unique string of the form "out@var{N}", where @var{N} is a
number starting from 0 corresponding to the mapped input stream
generated by the device.
The first unlabelled output is automatically assigned to the "out0"
label, but all the others need to be specified explicitly.
If not specified defaults to the filename specified for the input
device.
@item graph_file
Set the filename of the filtergraph to be read and sent to the other
filters. Syntax of the filtergraph is the same as the one specified by
the option @var{graph}.
@end table
@subsection Examples
@itemize
@item
Create a color video stream and play it back with @command{ffplay}:
@example
ffplay -f lavfi -graph "color=c=pink [out0]" dummy
@end example
@item
As the previous example, but use filename for specifying the graph
description, and omit the "out0" label:
@example
ffplay -f lavfi color=c=pink
@end example
@item
Create three different video test filtered sources and play them:
@example
ffplay -f lavfi -graph "testsrc [out0]; testsrc,hflip [out1]; testsrc,negate [out2]" test3
@end example
@item
Read an audio stream from a file using the amovie source and play it
back with @command{ffplay}:
@example
ffplay -f lavfi "amovie=test.wav"
@end example
@item
Read an audio stream and a video stream and play it back with
@command{ffplay}:
@example
ffplay -f lavfi "movie=test.avi[out0];amovie=test.wav[out1]"
@end example
@end itemize
@section libdc1394
IIDC1394 input device, based on libdc1394 and libraw1394.
@section openal
The OpenAL input device provides audio capture on all systems with a
working OpenAL 1.1 implementation.
To enable this input device during configuration, you need OpenAL
headers and libraries installed on your system, and need to configure
FFmpeg with @code{--enable-openal}.
OpenAL headers and libraries should be provided as part of your OpenAL
implementation, or as an additional download (an SDK). Depending on your
installation you may need to specify additional flags via the
@code{--extra-cflags} and @code{--extra-ldflags} for allowing the build
system to locate the OpenAL headers and libraries.
An incomplete list of OpenAL implementations follows:
@table @strong
@item Creative
The official Windows implementation, providing hardware acceleration
with supported devices and software fallback.
See @url{http://openal.org/}.
@item OpenAL Soft
Portable, open source (LGPL) software implementation. Includes
backends for the most common sound APIs on the Windows, Linux,
Solaris, and BSD operating systems.
See @url{http://kcat.strangesoft.net/openal.html}.
@item Apple
OpenAL is part of Core Audio, the official Mac OS X Audio interface.
See @url{http://developer.apple.com/technologies/mac/audio-and-video.html}
@end table
This device allows to capture from an audio input device handled
through OpenAL.
You need to specify the name of the device to capture in the provided
filename. If the empty string is provided, the device will
automatically select the default device. You can get the list of the
supported devices by using the option @var{list_devices}.
@subsection Options
@table @option
@item channels
Set the number of channels in the captured audio. Only the values
@option{1} (monaural) and @option{2} (stereo) are currently supported.
Defaults to @option{2}.
@item sample_size
Set the sample size (in bits) of the captured audio. Only the values
@option{8} and @option{16} are currently supported. Defaults to
@option{16}.
@item sample_rate
Set the sample rate (in Hz) of the captured audio.
Defaults to @option{44.1k}.
@item list_devices
If set to @option{true}, print a list of devices and exit.
Defaults to @option{false}.
@end table
@subsection Examples
Print the list of OpenAL supported devices and exit:
@example
$ ffmpeg -list_devices true -f openal -i dummy out.ogg
@end example
Capture from the OpenAL device @file{DR-BT101 via PulseAudio}:
@example
$ ffmpeg -f openal -i 'DR-BT101 via PulseAudio' out.ogg
@end example
Capture from the default device (note the empty string '' as filename):
@example
$ ffmpeg -f openal -i '' out.ogg
@end example
Capture from two devices simultaneously, writing to two different files,
within the same @command{ffmpeg} command:
@example
$ ffmpeg -f openal -i 'DR-BT101 via PulseAudio' out1.ogg -f openal -i 'ALSA Default' out2.ogg
@end example
Note: not all OpenAL implementations support multiple simultaneous capture -
try the latest OpenAL Soft if the above does not work.
@section oss
Open Sound System input device.
The filename to provide to the input device is the device node
representing the OSS input device, and is usually set to
@file{/dev/dsp}.
For example to grab from @file{/dev/dsp} using @command{ffmpeg} use the
command:
@example
ffmpeg -f oss -i /dev/dsp /tmp/oss.wav
@end example
For more information about OSS see:
@url{http://manuals.opensound.com/usersguide/dsp.html}
@section pulse
PulseAudio input device.
To enable this output device you need to configure FFmpeg with @code{--enable-libpulse}.
The filename to provide to the input device is a source device or the
string "default"
To list the PulseAudio source devices and their properties you can invoke
the command @command{pactl list sources}.
More information about PulseAudio can be found on @url{http://www.pulseaudio.org}.
@subsection Options
@table @option
@item server
Connect to a specific PulseAudio server, specified by an IP address.
Default server is used when not provided.
@item name
Specify the application name PulseAudio will use when showing active clients,
by default it is the @code{LIBAVFORMAT_IDENT} string.
@item stream_name
Specify the stream name PulseAudio will use when showing active streams,
by default it is "record".
@item sample_rate
Specify the samplerate in Hz, by default 48kHz is used.
@item channels
Specify the channels in use, by default 2 (stereo) is set.
@item frame_size
Specify the number of bytes per frame, by default it is set to 1024.
@item fragment_size
Specify the minimal buffering fragment in PulseAudio, it will affect the
audio latency. By default it is unset.
@end table
@subsection Examples
Record a stream from default device:
@example
ffmpeg -f pulse -i default /tmp/pulse.wav
@end example
@section sndio
sndio input device.
To enable this input device during configuration you need libsndio
installed on your system.
The filename to provide to the input device is the device node
representing the sndio input device, and is usually set to
@file{/dev/audio0}.
For example to grab from @file{/dev/audio0} using @command{ffmpeg} use the
command:
@example
ffmpeg -f sndio -i /dev/audio0 /tmp/oss.wav
@end example
@section video4linux2, v4l2
Video4Linux2 input video device.
"v4l2" can be used as alias for "video4linux2".
If FFmpeg is built with v4l-utils support (by using the
@code{--enable-libv4l2} configure option), it is possible to use it with the
@code{-use_libv4l2} input device option.
The name of the device to grab is a file device node, usually Linux
systems tend to automatically create such nodes when the device
(e.g. an USB webcam) is plugged into the system, and has a name of the
kind @file{/dev/video@var{N}}, where @var{N} is a number associated to
the device.
Video4Linux2 devices usually support a limited set of
@var{width}x@var{height} sizes and frame rates. You can check which are
supported using @command{-list_formats all} for Video4Linux2 devices.
Some devices, like TV cards, support one or more standards. It is possible
to list all the supported standards using @command{-list_standards all}.
The time base for the timestamps is 1 microsecond. Depending on the kernel
version and configuration, the timestamps may be derived from the real time
clock (origin at the Unix Epoch) or the monotonic clock (origin usually at
boot time, unaffected by NTP or manual changes to the clock). The
@option{-timestamps abs} or @option{-ts abs} option can be used to force
conversion into the real time clock.
Some usage examples of the video4linux2 device with @command{ffmpeg}
and @command{ffplay}:
@itemize
@item
Grab and show the input of a video4linux2 device:
@example
ffplay -f video4linux2 -framerate 30 -video_size hd720 /dev/video0
@end example
@item
Grab and record the input of a video4linux2 device, leave the
frame rate and size as previously set:
@example
ffmpeg -f video4linux2 -input_format mjpeg -i /dev/video0 out.mpeg
@end example
@end itemize
For more information about Video4Linux, check @url{http://linuxtv.org/}.
@subsection Options
@table @option
@item standard
Set the standard. Must be the name of a supported standard. To get a
list of the supported standards, use the @option{list_standards}
option.
@item channel
Set the input channel number. Default to -1, which means using the
previously selected channel.
@item video_size
Set the video frame size. The argument must be a string in the form
@var{WIDTH}x@var{HEIGHT} or a valid size abbreviation.
@item pixel_format
Select the pixel format (only valid for raw video input).
@item input_format
Set the preferred pixel format (for raw video) or a codec name.
This option allows to select the input format, when several are
available.
@item framerate
Set the preferred video frame rate.
@item list_formats
List available formats (supported pixel formats, codecs, and frame
sizes) and exit.
Available values are:
@table @samp
@item all
Show all available (compressed and non-compressed) formats.
@item raw
Show only raw video (non-compressed) formats.
@item compressed
Show only compressed formats.
@end table
@item list_standards
List supported standards and exit.
Available values are:
@table @samp
@item all
Show all supported standards.
@end table
@item timestamps, ts
Set type of timestamps for grabbed frames.
Available values are:
@table @samp
@item default
Use timestamps from the kernel.
@item abs
Use absolute timestamps (wall clock).
@item mono2abs
Force conversion from monotonic to absolute timestamps.
@end table
Default value is @code{default}.
@end table
@section vfwcap
VfW (Video for Windows) capture input device.
The filename passed as input is the capture driver number, ranging from
0 to 9. You may use "list" as filename to print a list of drivers. Any
other filename will be interpreted as device number 0.
@section x11grab
X11 video input device.
This device allows to capture a region of an X11 display.
The filename passed as input has the syntax:
@example
[@var{hostname}]:@var{display_number}.@var{screen_number}[+@var{x_offset},@var{y_offset}]
@end example
@var{hostname}:@var{display_number}.@var{screen_number} specifies the
X11 display name of the screen to grab from. @var{hostname} can be
omitted, and defaults to "localhost". The environment variable
@env{DISPLAY} contains the default display name.
@var{x_offset} and @var{y_offset} specify the offsets of the grabbed
area with respect to the top-left border of the X11 screen. They
default to 0.
Check the X11 documentation (e.g. man X) for more detailed information.
Use the @command{dpyinfo} program for getting basic information about the
properties of your X11 display (e.g. grep for "name" or "dimensions").
For example to grab from @file{:0.0} using @command{ffmpeg}:
@example
ffmpeg -f x11grab -framerate 25 -video_size cif -i :0.0 out.mpg
@end example
Grab at position @code{10,20}:
@example
ffmpeg -f x11grab -framerate 25 -video_size cif -i :0.0+10,20 out.mpg
@end example
@subsection Options
@table @option
@item draw_mouse
Specify whether to draw the mouse pointer. A value of @code{0} specify
not to draw the pointer. Default value is @code{1}.
@item follow_mouse
Make the grabbed area follow the mouse. The argument can be
@code{centered} or a number of pixels @var{PIXELS}.
When it is specified with "centered", the grabbing region follows the mouse
pointer and keeps the pointer at the center of region; otherwise, the region
follows only when the mouse pointer reaches within @var{PIXELS} (greater than
zero) to the edge of region.
For example:
@example
ffmpeg -f x11grab -follow_mouse centered -framerate 25 -video_size cif -i :0.0 out.mpg
@end example
To follow only when the mouse pointer reaches within 100 pixels to edge:
@example
ffmpeg -f x11grab -follow_mouse 100 -framerate 25 -video_size cif -i :0.0 out.mpg
@end example
@item framerate
Set the grabbing frame rate. Default value is @code{ntsc},
corresponding to a frame rate of @code{30000/1001}.
@item show_region
Show grabbed region on screen.
If @var{show_region} is specified with @code{1}, then the grabbing
region will be indicated on screen. With this option, it is easy to
know what is being grabbed if only a portion of the screen is grabbed.
For example:
@example
ffmpeg -f x11grab -show_region 1 -framerate 25 -video_size cif -i :0.0+10,20 out.mpg
@end example
With @var{follow_mouse}:
@example
ffmpeg -f x11grab -follow_mouse centered -show_region 1 -framerate 25 -video_size cif -i :0.0 out.mpg
@end example
@item video_size
Set the video frame size. Default value is @code{vga}.
@end table
@c man end INPUT DEVICES

/contrib/sdk/sources/ffmpeg/doc/issue_tracker.txt
0,0 → 1,194
FFmpeg's bug/feature request tracker manual
=================================================
NOTE: This is a draft.
Overview:
---------
FFmpeg uses Trac for tracking issues, new issues and changes to
existing issues can be done through a web interface.
Issues can be different kinds of things we want to keep track of
but that do not belong into the source tree itself. This includes
bug reports, feature requests and license violations. We
might add more items to this list in the future, so feel free to
propose a new `type of issue' on the ffmpeg-devel mailing list if
you feel it is worth tracking.
It is possible to subscribe to individual issues by adding yourself to the
Cc list or to subscribe to the ffmpeg-trac mailing list which receives
a mail for every change to every issue.
(the above does all work already after light testing)
The subscription URL for the ffmpeg-trac list is:
http(s)://ffmpeg.org/mailman/listinfo/ffmpeg-trac
The URL of the webinterface of the tracker is:
http(s)://trac.ffmpeg.org
Type:
-----
art
Artwork such as photos, music, banners, and logos.
bug / defect
An error, flaw, mistake, failure, or fault in FFmpeg or libav* that
prevents it from behaving as intended.
feature request / enhancement
Request of support for encoding or decoding of a new codec, container
or variant.
Request of support for more, less or plain different output or behavior
where the current implementation cannot be considered wrong.
license violation
ticket to keep track of (L)GPL violations of ffmpeg by others
sponsoring request
Developer requests for hardware, software, specifications, money,
refunds, etc.
Priority:
---------
critical
Bugs about data loss and security issues.
No feature request can be critical.
important
Bugs which make FFmpeg unusable for a significant number of users.
Examples here might be completely broken MPEG-4 decoding or a build issue
on Linux.
While broken 4xm decoding or a broken OS/2 build would not be important,
the separation to normal is somewhat fuzzy.
For feature requests this priority would be used for things many people
want.
Regressions also should be marked as important, regressions are bugs that
don't exist in a past revision or another branch.
normal
minor
Bugs about things like spelling errors, "mp2" instead of
"mp3" being shown and such.
Feature requests about things few people want or which do not make a big
difference.
wish
Something that is desirable to have but that there is no urgency at
all to implement, e.g. something completely cosmetic like a website
restyle or a personalized doxy template or the FFmpeg logo.
This priority is not valid for bugs.
Status:
-------
new
initial state
open
intermediate states
closed
final state
Analyzed flag:
--------------
Bugs which have been analyzed and where it is understood what causes them
and which exact chain of events triggers them. This analysis should be
available as a message in the bug report.
Note, do not change the status to analyzed without also providing a clear
and understandable analysis.
This state implicates that the bug either has been reproduced or that
reproduction is not needed as the bug is already understood.
Type/Status:
----------
*/new
Initial state of new bugs and feature requests submitted by
users.
*/open
Issues which have been briefly looked at and which did not look outright
invalid.
This implicates that no real more detailed state applies yet. Conversely,
the more detailed states below implicate that the issue has been briefly
looked at.
*/closed/duplicate
Bugs or feature requests which are duplicates.
Note, if you mark something as duplicate, do not forget setting the
superseder so bug reports are properly linked.
*/closed/invalid
Bugs caused by user errors, random ineligible or otherwise nonsense stuff.
*/closed/needs_more_info
Issues for which some information has been requested by the developers,
but which has not been provided by anyone within reasonable time.
bug/closed/fixed
Bugs which have to the best of our knowledge been fixed.
bug/closed/wontfix
Bugs which we will not fix. Possible reasons include legality, high
complexity for the sake of supporting obscure corner cases, speed loss
for similarly esoteric purposes, et cetera.
This also means that we would reject a patch.
If we are just too lazy to fix a bug then the correct state is open
and unassigned. Closed means that the case is closed which is not
the case if we are just waiting for a patch.
bug/closed/works_for_me
Bugs for which sufficient information was provided to reproduce but
reproduction failed - that is the code seems to work correctly to the
best of our knowledge.
feature_request/closed/fixed
Feature requests which have been implemented.
feature_request/closed/wontfix
Feature requests which will not be implemented. The reasons here could
be legal, philosophical or others.
Note2, if you provide the requested info do not forget to remove the
needs_more_info resolution.
Component:
----------
avcodec
issues in libavcodec/*
avformat
issues in libavformat/*
avutil
issues in libavutil/*
regression test
issues in tests/*
ffmpeg
issues in or related to ffmpeg.c
ffplay
issues in or related to ffplay.c
ffprobe
issues in or related to ffprobe.c
ffserver
issues in or related to ffserver.c
build system
issues in or related to configure/Makefile
regression
bugs which were not present in a past revision
trac
issues related to our issue tracker

/contrib/sdk/sources/ffmpeg/doc/libavcodec.pod
0,0 → 1,41
=head1 NAME
libavcodec - media streams decoding and encoding library
=head1 DESCRIPTION
The libavcodec library provides a generic encoding/decoding framework
and contains multiple decoders and encoders for audio, video and
subtitle streams, and several bitstream filters.
The shared architecture provides various services ranging from bit
stream I/O to DSP optimizations, and makes it suitable for
implementing robust and fast codecs as well as for experimentation.
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1),
libavutil(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libavcodec.texi
0,0 → 1,48
\input texinfo @c -*- texinfo -*-
@settitle Libavcodec Documentation
@titlepage
@center @titlefont{Libavcodec Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libavcodec library provides a generic encoding/decoding framework
and contains multiple decoders and encoders for audio, video and
subtitle streams, and several bitstream filters.
The shared architecture provides various services ranging from bit
stream I/O to DSP optimizations, and makes it suitable for
implementing robust and fast codecs as well as for experimentation.
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-codecs.html,ffmpeg-codecs}, @url{ffmpeg-bitstream-filters.html,bitstream-filters},
@url{libavutil.html,libavutil}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-codecs(1), ffmpeg-bitstream-filters(1),
libavutil(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libavcodec
@settitle media streams decoding and encoding library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libavdevice.pod
0,0 → 1,38
=head1 NAME
libavdevice - multimedia device handling library
=head1 DESCRIPTION
The libavdevice library provides a generic framework for grabbing from
and rendering to many common multimedia input/output devices, and
supports several input and output devices, including Video4Linux2,
VfW, DShow, and ALSA.
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-devices(1),
libavutil(3), libavcodec(3), libavformat(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libavdevice.texi
0,0 → 1,45
\input texinfo @c -*- texinfo -*-
@settitle Libavdevice Documentation
@titlepage
@center @titlefont{Libavdevice Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libavdevice library provides a generic framework for grabbing from
and rendering to many common multimedia input/output devices, and
supports several input and output devices, including Video4Linux2,
VfW, DShow, and ALSA.
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-devices.html,ffmpeg-devices},
@url{libavutil.html,libavutil}, @url{libavcodec.html,libavcodec}, @url{libavformat.html,libavformat}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-devices(1),
libavutil(3), libavcodec(3), libavformat(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libavdevice
@settitle multimedia device handling library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libavfilter.texi
0,0 → 1,44
\input texinfo @c -*- texinfo -*-
@settitle Libavfilter Documentation
@titlepage
@center @titlefont{Libavfilter Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libavfilter library provides a generic audio/video filtering
framework containing several filters, sources and sinks.
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-filters.html,ffmpeg-filters},
@url{libavutil.html,libavutil}, @url{libswscale.html,libswscale}, @url{libswresample.html,libswresample},
@url{libavcodec.html,libavcodec}, @url{libavformat.html,libavformat}, @url{libavdevice.html,libavdevice}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-filters(1),
libavutil(3), libswscale(3), libswresample(3), libavcodec(3), libavformat(3), libavdevice(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libavfilter
@settitle multimedia filtering library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libavformat.pod
0,0 → 1,41
=head1 NAME
libavformat - multimedia muxing and demuxing library
=head1 DESCRIPTION
The libavformat library provides a generic framework for multiplexing
and demultiplexing (muxing and demuxing) audio, video and subtitle
streams. It encompasses multiple muxers and demuxers for multimedia
container formats.
It also supports several input and output protocols to access a media
resource.
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-formats(1), ffmpeg-protocols(1),
libavutil(3), libavcodec(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libavformat.texi
0,0 → 1,48
\input texinfo @c -*- texinfo -*-
@settitle Libavformat Documentation
@titlepage
@center @titlefont{Libavformat Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libavformat library provides a generic framework for multiplexing
and demultiplexing (muxing and demuxing) audio, video and subtitle
streams. It encompasses multiple muxers and demuxers for multimedia
container formats.
It also supports several input and output protocols to access a media
resource.
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-formats.html,ffmpeg-formats}, @url{ffmpeg-protocols.html,ffmpeg-protocols},
@url{libavutil.html,libavutil}, @url{libavcodec.html,libavcodec}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-formats(1), ffmpeg-protocols(1),
libavutil(3), libavcodec(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libavformat
@settitle multimedia muxing and demuxing library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libavutil.pod
0,0 → 1,38
=head1 NAME
libavutil - multimedia-biased utility library
=head1 DESCRIPTION
The libavutil library is a utility library to aid portable
multimedia programming. It contains safe portable string functions,
random number generators, data structures, additional mathematics
functions, cryptography and multimedia related functionality (like
enumerations for pixel and sample formats).
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-utils(1)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libavutil.texi
0,0 → 1,44
\input texinfo @c -*- texinfo -*-
@settitle Libavutil Documentation
@titlepage
@center @titlefont{Libavutil Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libavutil library is a utility library to aid portable
multimedia programming. It contains safe portable string functions,
random number generators, data structures, additional mathematics
functions, cryptography and multimedia related functionality (like
enumerations for pixel and sample formats).
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-utils.html,ffmpeg-utils}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-utils(1)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libavutil
@settitle multimedia-biased utility library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libswresample.pod
0,0 → 1,73
=head1 NAME
libswresample - audio resampling library
=head1 DESCRIPTION
The libswresample library performs highly optimized audio resampling,
rematrixing and sample format conversion operations.
Specifically, this library performs the following conversions:
=over 4
=item *
I<Resampling>: is the process of changing the audio rate, for
example from a high sample rate of 44100Hz to 8000Hz. Audio
conversion from high to low sample rate is a lossy process. Several
resampling options and algorithms are available.
=item *
I<Format conversion>: is the process of converting the type of
samples, for example from 16-bit signed samples to unsigned 8-bit or
float samples. It also handles packing conversion, when passing from
packed layout (all samples belonging to distinct channels interleaved
in the same buffer), to planar layout (all samples belonging to the
same channel stored in a dedicated buffer or "plane").
=item *
I<Rematrixing>: is the process of changing the channel layout, for
example from stereo to mono. When the input channels cannot be mapped
to the output streams, the process is lossy, since it involves
different gain factors and mixing.
=back
Various other audio conversions (e.g. stretching and padding) are
enabled through dedicated options.
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-resampler(1),
libavutil(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libswresample.texi
0,0 → 1,70
\input texinfo @c -*- texinfo -*-
@settitle Libswresample Documentation
@titlepage
@center @titlefont{Libswresample Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libswresample library performs highly optimized audio resampling,
rematrixing and sample format conversion operations.
Specifically, this library performs the following conversions:
@itemize
@item
@emph{Resampling}: is the process of changing the audio rate, for
example from a high sample rate of 44100Hz to 8000Hz. Audio
conversion from high to low sample rate is a lossy process. Several
resampling options and algorithms are available.
@item
@emph{Format conversion}: is the process of converting the type of
samples, for example from 16-bit signed samples to unsigned 8-bit or
float samples. It also handles packing conversion, when passing from
packed layout (all samples belonging to distinct channels interleaved
in the same buffer), to planar layout (all samples belonging to the
same channel stored in a dedicated buffer or "plane").
@item
@emph{Rematrixing}: is the process of changing the channel layout, for
example from stereo to mono. When the input channels cannot be mapped
to the output streams, the process is lossy, since it involves
different gain factors and mixing.
@end itemize
Various other audio conversions (e.g. stretching and padding) are
enabled through dedicated options.
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-resampler.html,ffmpeg-resampler},
@url{libavutil.html,libavutil}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-resampler(1),
libavutil(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libswresample
@settitle audio resampling library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/libswscale.pod
0,0 → 1,64
=head1 NAME
libswscale - video scaling and pixel format conversion library
=head1 DESCRIPTION
The libswscale library performs highly optimized image scaling and
colorspace and pixel format conversion operations.
Specifically, this library performs the following conversions:
=over 4
=item *
I<Rescaling>: is the process of changing the video size. Several
rescaling options and algorithms are available. This is usually a
lossy process.
=item *
I<Pixel format conversion>: is the process of converting the image
format and colorspace of the image, for example from planar YUV420P to
RGB24 packed. It also handles packing conversion, that is converts
from packed layout (all pixels belonging to distinct planes
interleaved in the same buffer), to planar layout (all samples
belonging to the same plane stored in a dedicated buffer or "plane").
This is usually a lossy process in case the source and destination
colorspaces differ.
=back
=head1 SEE ALSO
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-scaler(1),
libavutil(3)
=head1 AUTHORS
The FFmpeg developers.
For details about the authorship, see the Git history of the project
(git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
B<git log> in the FFmpeg source directory, or browsing the
online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
Maintainers for the specific components are listed in the file
F<MAINTAINERS> in the source code tree.

/contrib/sdk/sources/ffmpeg/doc/libswscale.texi
0,0 → 1,63
\input texinfo @c -*- texinfo -*-
@settitle Libswscale Documentation
@titlepage
@center @titlefont{Libswscale Documentation}
@end titlepage
@top
@contents
@chapter Description
@c man begin DESCRIPTION
The libswscale library performs highly optimized image scaling and
colorspace and pixel format conversion operations.
Specifically, this library performs the following conversions:
@itemize
@item
@emph{Rescaling}: is the process of changing the video size. Several
rescaling options and algorithms are available. This is usually a
lossy process.
@item
@emph{Pixel format conversion}: is the process of converting the image
format and colorspace of the image, for example from planar YUV420P to
RGB24 packed. It also handles packing conversion, that is converts
from packed layout (all pixels belonging to distinct planes
interleaved in the same buffer), to planar layout (all samples
belonging to the same plane stored in a dedicated buffer or "plane").
This is usually a lossy process in case the source and destination
colorspaces differ.
@end itemize
@c man end DESCRIPTION
@chapter See Also
@ifhtml
@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
@url{ffmpeg-scaler.html,ffmpeg-scaler},
@url{libavutil.html,libavutil}
@end ifhtml
@ifnothtml
ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
ffmpeg-scaler(1),
libavutil(3)
@end ifnothtml
@include authors.texi
@ignore
@setfilename libswscale
@settitle video scaling and pixel format conversion library
@end ignore
@bye

/contrib/sdk/sources/ffmpeg/doc/metadata.texi
0,0 → 1,84
@chapter Metadata
@c man begin METADATA
FFmpeg is able to dump metadata from media files into a simple UTF-8-encoded
INI-like text file and then load it back using the metadata muxer/demuxer.
The file format is as follows:
@enumerate
@item
A file consists of a header and a number of metadata tags divided into sections,
each on its own line.
@item
The header is a ';FFMETADATA' string, followed by a version number (now 1).
@item
Metadata tags are of the form 'key=value'
@item
Immediately after header follows global metadata
@item
After global metadata there may be sections with per-stream/per-chapter
metadata.
@item
A section starts with the section name in uppercase (i.e. STREAM or CHAPTER) in
brackets ('[', ']') and ends with next section or end of file.
@item
At the beginning of a chapter section there may be an optional timebase to be
used for start/end values. It must be in form 'TIMEBASE=num/den', where num and
den are integers. If the timebase is missing then start/end times are assumed to
be in milliseconds.
Next a chapter section must contain chapter start and end times in form
'START=num', 'END=num', where num is a positive integer.
@item
Empty lines and lines starting with ';' or '#' are ignored.
@item
Metadata keys or values containing special characters ('=', ';', '#', '\' and a
newline) must be escaped with a backslash '\'.
@item
Note that whitespace in metadata (e.g. foo = bar) is considered to be a part of
the tag (in the example above key is 'foo ', value is ' bar').
@end enumerate
A ffmetadata file might look like this:
@example
;FFMETADATA1
title=bike\\shed
;this is a comment
artist=FFmpeg troll team
[CHAPTER]
TIMEBASE=1/1000
START=0
#chapter ends at 0:01:00
END=60000
title=chapter \#1
[STREAM]
title=multi\
line
@end example
By using the ffmetadata muxer and demuxer it is possible to extract
metadata from an input file to an ffmetadata file, and then transcode
the file into an output file with the edited ffmetadata file.
Extracting an ffmetadata file with @file{ffmpeg} goes as follows:
@example
ffmpeg -i INPUT -f ffmetadata FFMETADATAFILE
@end example
Reinserting edited metadata information from the FFMETADATAFILE file can
be done as:
@example
ffmpeg -i INPUT -i FFMETADATAFILE -map_metadata 1 -codec copy OUTPUT
@end example
@c man end METADATA

/contrib/sdk/sources/ffmpeg/doc/mips.txt
0,0 → 1,75
MIPS optimizations info
===============================================
MIPS optimizations of codecs are targeting MIPS 74k family of
CPUs. Some of these optimizations are relying more on properties of
this architecture and some are relying less (and can be used on most
MIPS architectures without degradation in performance).
Along with FFMPEG copyright notice, there is MIPS copyright notice in
all the files that are created by people from MIPS Technologies.
Example of copyright notice:
===============================================
/*
* Copyright (c) 2012
* MIPS Technologies, Inc., California.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Author Name (author_name@@mips.com)
*/
Files that have MIPS copyright notice in them:
===============================================
* libavutil/mips/
float_dsp_mips.c
libm_mips.h
* libavcodec/
fft_fixed_32.c
fft_init_table.c
fft_table.h
mdct_fixed_32.c
* libavcodec/mips/
aaccoder_mips.c
aacpsy_mips.h
ac3dsp_mips.c
acelp_filters_mips.c
acelp_vectors_mips.c
amrwbdec_mips.c
amrwbdec_mips.h
celp_filters_mips.c
celp_math_mips.c
compute_antialias_fixed.h
compute_antialias_float.h
lsp_mips.h
dsputil_mips.c
fft_mips.c
fft_table.h
fft_init_table.c
fmtconvert_mips.c
iirfilter_mips.c
mpegaudiodsp_mips_fixed.c
mpegaudiodsp_mips_float.c

/contrib/sdk/sources/ffmpeg/doc/multithreading.txt
0,0 → 1,70
FFmpeg multithreading methods
==============================================
FFmpeg provides two methods for multithreading codecs.
Slice threading decodes multiple parts of a frame at the same time, using
AVCodecContext execute() and execute2().
Frame threading decodes multiple frames at the same time.
It accepts N future frames and delays decoded pictures by N-1 frames.
The later frames are decoded in separate threads while the user is
displaying the current one.
Restrictions on clients
==============================================
Slice threading -
* The client's draw_horiz_band() must be thread-safe according to the comment
in avcodec.h.
Frame threading -
* Restrictions with slice threading also apply.
* For best performance, the client should set thread_safe_callbacks if it
provides a thread-safe get_buffer() callback.
* There is one frame of delay added for every thread beyond the first one.
Clients must be able to handle this; the pkt_dts and pkt_pts fields in
AVFrame will work as usual.
Restrictions on codec implementations
==============================================
Slice threading -
None except that there must be something worth executing in parallel.
Frame threading -
* Codecs can only accept entire pictures per packet.
* Codecs similar to ffv1, whose streams don't reset across frames,
will not work because their bitstreams cannot be decoded in parallel.
* The contents of buffers must not be read before ff_thread_await_progress()
has been called on them. reget_buffer() and buffer age optimizations no longer work.
* The contents of buffers must not be written to after ff_thread_report_progress()
has been called on them. This includes draw_edges().
Porting codecs to frame threading
==============================================
Find all context variables that are needed by the next frame. Move all
code changing them, as well as code calling get_buffer(), up to before
the decode process starts. Call ff_thread_finish_setup() afterwards. If
some code can't be moved, have update_thread_context() run it in the next
thread.
If the codec allocates writable tables in its init(), add an init_thread_copy()
which re-allocates them for other threads.
Add CODEC_CAP_FRAME_THREADS to the codec capabilities. There will be very little
speed gain at this point but it should work.
If there are inter-frame dependencies, so the codec calls
ff_thread_report/await_progress(), set AVCodecInternal.allocate_progress. The
frames must then be freed with ff_thread_release_buffer().
Otherwise leave it at zero and decode directly into the user-supplied frames.
Call ff_thread_report_progress() after some part of the current picture has decoded.
A good place to put this is where draw_horiz_band() is called - add this if it isn't
called anywhere, as it's useful too and the implementation is trivial when you're
doing this. Note that draw_edges() needs to be called before reporting progress.
Before accessing a reference frame or its MVs, call ff_thread_await_progress().

/contrib/sdk/sources/ffmpeg/doc/muxers.texi
0,0 → 1,908
@chapter Muxers
@c man begin MUXERS
Muxers are configured elements in FFmpeg which allow writing
multimedia streams to a particular type of file.
When you configure your FFmpeg build, all the supported muxers
are enabled by default. You can list all available muxers using the
configure option @code{--list-muxers}.
You can disable all the muxers with the configure option
@code{--disable-muxers} and selectively enable / disable single muxers
with the options @code{--enable-muxer=@var{MUXER}} /
@code{--disable-muxer=@var{MUXER}}.
The option @code{-formats} of the ff* tools will display the list of
enabled muxers.
A description of some of the currently available muxers follows.
@anchor{aiff}
@section aiff
Audio Interchange File Format muxer.
It accepts the following options:
@table @option
@item write_id3v2
Enable ID3v2 tags writing when set to 1. Default is 0 (disabled).
@item id3v2_version
Select ID3v2 version to write. Currently only version 3 and 4 (aka.
ID3v2.3 and ID3v2.4) are supported. The default is version 4.
@end table
@anchor{crc}
@section crc
CRC (Cyclic Redundancy Check) testing format.
This muxer computes and prints the Adler-32 CRC of all the input audio
and video frames. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
CRC.
The output of the muxer consists of a single line of the form:
CRC=0x@var{CRC}, where @var{CRC} is a hexadecimal number 0-padded to
8 digits containing the CRC for all the decoded input frames.
For example to compute the CRC of the input, and store it in the file
@file{out.crc}:
@example
ffmpeg -i INPUT -f crc out.crc
@end example
You can print the CRC to stdout with the command:
@example
ffmpeg -i INPUT -f crc -
@end example
You can select the output format of each frame with @command{ffmpeg} by
specifying the audio and video codec and format. For example to
compute the CRC of the input audio converted to PCM unsigned 8-bit
and the input video converted to MPEG-2 video, use the command:
@example
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f crc -
@end example
See also the @ref{framecrc} muxer.
@anchor{framecrc}
@section framecrc
Per-packet CRC (Cyclic Redundancy Check) testing format.
This muxer computes and prints the Adler-32 CRC for each audio
and video packet. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
CRC.
The output of the muxer consists of a line for each audio and video
packet of the form:
@example
@var{stream_index}, @var{packet_dts}, @var{packet_pts}, @var{packet_duration}, @var{packet_size}, 0x@var{CRC}
@end example
@var{CRC} is a hexadecimal number 0-padded to 8 digits containing the
CRC of the packet.
For example to compute the CRC of the audio and video frames in
@file{INPUT}, converted to raw audio and video packets, and store it
in the file @file{out.crc}:
@example
ffmpeg -i INPUT -f framecrc out.crc
@end example
To print the information to stdout, use the command:
@example
ffmpeg -i INPUT -f framecrc -
@end example
With @command{ffmpeg}, you can select the output format to which the
audio and video frames are encoded before computing the CRC for each
packet by specifying the audio and video codec. For example, to
compute the CRC of each decoded input audio frame converted to PCM
unsigned 8-bit and of each decoded input video frame converted to
MPEG-2 video, use the command:
@example
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f framecrc -
@end example
See also the @ref{crc} muxer.
@anchor{framemd5}
@section framemd5
Per-packet MD5 testing format.
This muxer computes and prints the MD5 hash for each audio
and video packet. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
hash.
The output of the muxer consists of a line for each audio and video
packet of the form:
@example
@var{stream_index}, @var{packet_dts}, @var{packet_pts}, @var{packet_duration}, @var{packet_size}, @var{MD5}
@end example
@var{MD5} is a hexadecimal number representing the computed MD5 hash
for the packet.
For example to compute the MD5 of the audio and video frames in
@file{INPUT}, converted to raw audio and video packets, and store it
in the file @file{out.md5}:
@example
ffmpeg -i INPUT -f framemd5 out.md5
@end example
To print the information to stdout, use the command:
@example
ffmpeg -i INPUT -f framemd5 -
@end example
See also the @ref{md5} muxer.
@anchor{hls}
@section hls
Apple HTTP Live Streaming muxer that segments MPEG-TS according to
the HTTP Live Streaming specification.
It creates a playlist file and numbered segment files. The output
filename specifies the playlist filename; the segment filenames
receive the same basename as the playlist, a sequential number and
a .ts extension.
@example
ffmpeg -i in.nut out.m3u8
@end example
@table @option
@item -hls_time @var{seconds}
Set the segment length in seconds.
@item -hls_list_size @var{size}
Set the maximum number of playlist entries.
@item -hls_wrap @var{wrap}
Set the number after which index wraps.
@item -start_number @var{number}
Start the sequence from @var{number}.
@end table
@anchor{ico}
@section ico
ICO file muxer.
Microsoft's icon file format (ICO) has some strict limitations that should be noted:
@itemize
@item
Size cannot exceed 256 pixels in any dimension
@item
Only BMP and PNG images can be stored
@item
If a BMP image is used, it must be one of the following pixel formats:
@example
BMP Bit Depth FFmpeg Pixel Format
1bit pal8
4bit pal8
8bit pal8
16bit rgb555le
24bit bgr24
32bit bgra
@end example
@item
If a BMP image is used, it must use the BITMAPINFOHEADER DIB header
@item
If a PNG image is used, it must use the rgba pixel format
@end itemize
@anchor{image2}
@section image2
Image file muxer.
The image file muxer writes video frames to image files.
The output filenames are specified by a pattern, which can be used to
produce sequentially numbered series of files.
The pattern may contain the string "%d" or "%0@var{N}d", this string
specifies the position of the characters representing a numbering in
the filenames. If the form "%0@var{N}d" is used, the string
representing the number in each filename is 0-padded to @var{N}
digits. The literal character '%' can be specified in the pattern with
the string "%%".
If the pattern contains "%d" or "%0@var{N}d", the first filename of
the file list specified will contain the number 1, all the following
numbers will be sequential.
The pattern may contain a suffix which is used to automatically
determine the format of the image files to write.
For example the pattern "img-%03d.bmp" will specify a sequence of
filenames of the form @file{img-001.bmp}, @file{img-002.bmp}, ...,
@file{img-010.bmp}, etc.
The pattern "img%%-%d.jpg" will specify a sequence of filenames of the
form @file{img%-1.jpg}, @file{img%-2.jpg}, ..., @file{img%-10.jpg},
etc.
The following example shows how to use @command{ffmpeg} for creating a
sequence of files @file{img-001.jpeg}, @file{img-002.jpeg}, ...,
taking one image every second from the input video:
@example
ffmpeg -i in.avi -vsync 1 -r 1 -f image2 'img-%03d.jpeg'
@end example
Note that with @command{ffmpeg}, if the format is not specified with the
@code{-f} option and the output filename specifies an image file
format, the image2 muxer is automatically selected, so the previous
command can be written as:
@example
ffmpeg -i in.avi -vsync 1 -r 1 'img-%03d.jpeg'
@end example
Note also that the pattern must not necessarily contain "%d" or
"%0@var{N}d", for example to create a single image file
@file{img.jpeg} from the input video you can employ the command:
@example
ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg
@end example
@table @option
@item start_number @var{number}
Start the sequence from @var{number}. Default value is 1. Must be a
non-negative number.
@item -update @var{number}
If @var{number} is nonzero, the filename will always be interpreted as just a
filename, not a pattern, and this file will be continuously overwritten with new
images.
@end table
The image muxer supports the .Y.U.V image file format. This format is
special in that that each image frame consists of three files, for
each of the YUV420P components. To read or write this image file format,
specify the name of the '.Y' file. The muxer will automatically open the
'.U' and '.V' files as required.
@section matroska
Matroska container muxer.
This muxer implements the matroska and webm container specs.
The recognized metadata settings in this muxer are:
@table @option
@item title=@var{title name}
Name provided to a single track
@end table
@table @option
@item language=@var{language name}
Specifies the language of the track in the Matroska languages form
@end table
@table @option
@item stereo_mode=@var{mode}
Stereo 3D video layout of two views in a single video track
@table @option
@item mono
video is not stereo
@item left_right
Both views are arranged side by side, Left-eye view is on the left
@item bottom_top
Both views are arranged in top-bottom orientation, Left-eye view is at bottom
@item top_bottom
Both views are arranged in top-bottom orientation, Left-eye view is on top
@item checkerboard_rl
Each view is arranged in a checkerboard interleaved pattern, Left-eye view being first
@item checkerboard_lr
Each view is arranged in a checkerboard interleaved pattern, Right-eye view being first
@item row_interleaved_rl
Each view is constituted by a row based interleaving, Right-eye view is first row
@item row_interleaved_lr
Each view is constituted by a row based interleaving, Left-eye view is first row
@item col_interleaved_rl
Both views are arranged in a column based interleaving manner, Right-eye view is first column
@item col_interleaved_lr
Both views are arranged in a column based interleaving manner, Left-eye view is first column
@item anaglyph_cyan_red
All frames are in anaglyph format viewable through red-cyan filters
@item right_left
Both views are arranged side by side, Right-eye view is on the left
@item anaglyph_green_magenta
All frames are in anaglyph format viewable through green-magenta filters
@item block_lr
Both eyes laced in one Block, Left-eye view is first
@item block_rl
Both eyes laced in one Block, Right-eye view is first
@end table
@end table
For example a 3D WebM clip can be created using the following command line:
@example
ffmpeg -i sample_left_right_clip.mpg -an -c:v libvpx -metadata stereo_mode=left_right -y stereo_clip.webm
@end example
This muxer supports the following options:
@table @option
@item reserve_index_space
By default, this muxer writes the index for seeking (called cues in Matroska
terms) at the end of the file, because it cannot know in advance how much space
to leave for the index at the beginning of the file. However for some use cases
-- e.g. streaming where seeking is possible but slow -- it is useful to put the
index at the beginning of the file.
If this option is set to a non-zero value, the muxer will reserve a given amount
of space in the file header and then try to write the cues there when the muxing
finishes. If the available space does not suffice, muxing will fail. A safe size
for most use cases should be about 50kB per hour of video.
Note that cues are only written if the output is seekable and this option will
have no effect if it is not.
@end table
@anchor{md5}
@section md5
MD5 testing format.
This muxer computes and prints the MD5 hash of all the input audio
and video frames. By default audio frames are converted to signed
16-bit raw audio and video frames to raw video before computing the
hash.
The output of the muxer consists of a single line of the form:
MD5=@var{MD5}, where @var{MD5} is a hexadecimal number representing
the computed MD5 hash.
For example to compute the MD5 hash of the input converted to raw
audio and video, and store it in the file @file{out.md5}:
@example
ffmpeg -i INPUT -f md5 out.md5
@end example
You can print the MD5 to stdout with the command:
@example
ffmpeg -i INPUT -f md5 -
@end example
See also the @ref{framemd5} muxer.
@section MOV/MP4/ISMV
The mov/mp4/ismv muxer supports fragmentation. Normally, a MOV/MP4
file has all the metadata about all packets stored in one location
(written at the end of the file, it can be moved to the start for
better playback by adding @var{faststart} to the @var{movflags}, or
using the @command{qt-faststart} tool). A fragmented
file consists of a number of fragments, where packets and metadata
about these packets are stored together. Writing a fragmented
file has the advantage that the file is decodable even if the
writing is interrupted (while a normal MOV/MP4 is undecodable if
it is not properly finished), and it requires less memory when writing
very long files (since writing normal MOV/MP4 files stores info about
every single packet in memory until the file is closed). The downside
is that it is less compatible with other applications.
Fragmentation is enabled by setting one of the AVOptions that define
how to cut the file into fragments:
@table @option
@item -moov_size @var{bytes}
Reserves space for the moov atom at the beginning of the file instead of placing the
moov atom at the end. If the space reserved is insufficient, muxing will fail.
@item -movflags frag_keyframe
Start a new fragment at each video keyframe.
@item -frag_duration @var{duration}
Create fragments that are @var{duration} microseconds long.
@item -frag_size @var{size}
Create fragments that contain up to @var{size} bytes of payload data.
@item -movflags frag_custom
Allow the caller to manually choose when to cut fragments, by
calling @code{av_write_frame(ctx, NULL)} to write a fragment with
the packets written so far. (This is only useful with other
applications integrating libavformat, not from @command{ffmpeg}.)
@item -min_frag_duration @var{duration}
Don't create fragments that are shorter than @var{duration} microseconds long.
@end table
If more than one condition is specified, fragments are cut when
one of the specified conditions is fulfilled. The exception to this is
@code{-min_frag_duration}, which has to be fulfilled for any of the other
conditions to apply.
Additionally, the way the output file is written can be adjusted
through a few other options:
@table @option
@item -movflags empty_moov
Write an initial moov atom directly at the start of the file, without
describing any samples in it. Generally, an mdat/moov pair is written
at the start of the file, as a normal MOV/MP4 file, containing only
a short portion of the file. With this option set, there is no initial
mdat atom, and the moov atom only describes the tracks but has
a zero duration.
Files written with this option set do not work in QuickTime.
This option is implicitly set when writing ismv (Smooth Streaming) files.
@item -movflags separate_moof
Write a separate moof (movie fragment) atom for each track. Normally,
packets for all tracks are written in a moof atom (which is slightly
more efficient), but with this option set, the muxer writes one moof/mdat
pair for each track, making it easier to separate tracks.
This option is implicitly set when writing ismv (Smooth Streaming) files.
@item -movflags faststart
Run a second pass moving the index (moov atom) to the beginning of the file.
This operation can take a while, and will not work in various situations such
as fragmented output, thus it is not enabled by default.
@item -movflags rtphint
Add RTP hinting tracks to the output file.
@end table
Smooth Streaming content can be pushed in real time to a publishing
point on IIS with this muxer. Example:
@example
ffmpeg -re @var{<normal input/transcoding options>} -movflags isml+frag_keyframe -f ismv http://server/publishingpoint.isml/Streams(Encoder1)
@end example
@section mp3
The MP3 muxer writes a raw MP3 stream with an ID3v2 header at the beginning and
optionally an ID3v1 tag at the end. ID3v2.3 and ID3v2.4 are supported, the
@code{id3v2_version} option controls which one is used. The legacy ID3v1 tag is
not written by default, but may be enabled with the @code{write_id3v1} option.
For seekable output the muxer also writes a Xing frame at the beginning, which
contains the number of frames in the file. It is useful for computing duration
of VBR files.
The muxer supports writing ID3v2 attached pictures (APIC frames). The pictures
are supplied to the muxer in form of a video stream with a single packet. There
can be any number of those streams, each will correspond to a single APIC frame.
The stream metadata tags @var{title} and @var{comment} map to APIC
@var{description} and @var{picture type} respectively. See
@url{http://id3.org/id3v2.4.0-frames} for allowed picture types.
Note that the APIC frames must be written at the beginning, so the muxer will
buffer the audio frames until it gets all the pictures. It is therefore advised
to provide the pictures as soon as possible to avoid excessive buffering.
Examples:
Write an mp3 with an ID3v2.3 header and an ID3v1 footer:
@example
ffmpeg -i INPUT -id3v2_version 3 -write_id3v1 1 out.mp3
@end example
To attach a picture to an mp3 file select both the audio and the picture stream
with @code{map}:
@example
ffmpeg -i input.mp3 -i cover.png -c copy -map 0 -map 1
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" out.mp3
@end example
@section mpegts
MPEG transport stream muxer.
This muxer implements ISO 13818-1 and part of ETSI EN 300 468.
The muxer options are:
@table @option
@item -mpegts_original_network_id @var{number}
Set the original_network_id (default 0x0001). This is unique identifier
of a network in DVB. Its main use is in the unique identification of a
service through the path Original_Network_ID, Transport_Stream_ID.
@item -mpegts_transport_stream_id @var{number}
Set the transport_stream_id (default 0x0001). This identifies a
transponder in DVB.
@item -mpegts_service_id @var{number}
Set the service_id (default 0x0001) also known as program in DVB.
@item -mpegts_pmt_start_pid @var{number}
Set the first PID for PMT (default 0x1000, max 0x1f00).
@item -mpegts_start_pid @var{number}
Set the first PID for data packets (default 0x0100, max 0x0f00).
@item -mpegts_m2ts_mode @var{number}
Enable m2ts mode if set to 1. Default value is -1 which disables m2ts mode.
@item -muxrate @var{number}
Set muxrate.
@item -pes_payload_size @var{number}
Set minimum PES packet payload in bytes.
@item -mpegts_flags @var{flags}
Set flags (see below).
@item -mpegts_copyts @var{number}
Preserve original timestamps, if value is set to 1. Default value is -1, which
results in shifting timestamps so that they start from 0.
@item -tables_version @var{number}
Set PAT, PMT and SDT version (default 0, valid values are from 0 to 31, inclusively).
This option allows updating stream structure so that standard consumer may
detect the change. To do so, reopen output AVFormatContext (in case of API
usage) or restart ffmpeg instance, cyclically changing tables_version value:
@example
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
...
ffmpeg -i source3.ts -codec copy -f mpegts -tables_version 31 udp://1.1.1.1:1111
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
...
@end example
@end table
Option mpegts_flags may take a set of such flags:
@table @option
@item resend_headers
Reemit PAT/PMT before writing the next packet.
@item latm
Use LATM packetization for AAC.
@end table
The recognized metadata settings in mpegts muxer are @code{service_provider}
and @code{service_name}. If they are not set the default for
@code{service_provider} is "FFmpeg" and the default for
@code{service_name} is "Service01".
@example
ffmpeg -i file.mpg -c copy \
-mpegts_original_network_id 0x1122 \
-mpegts_transport_stream_id 0x3344 \
-mpegts_service_id 0x5566 \
-mpegts_pmt_start_pid 0x1500 \
-mpegts_start_pid 0x150 \
-metadata service_provider="Some provider" \
-metadata service_name="Some Channel" \
-y out.ts
@end example
@section null
Null muxer.
This muxer does not generate any output file, it is mainly useful for
testing or benchmarking purposes.
For example to benchmark decoding with @command{ffmpeg} you can use the
command:
@example
ffmpeg -benchmark -i INPUT -f null out.null
@end example
Note that the above command does not read or write the @file{out.null}
file, but specifying the output file is required by the @command{ffmpeg}
syntax.
Alternatively you can write the command as:
@example
ffmpeg -benchmark -i INPUT -f null -
@end example
@section ogg
Ogg container muxer.
@table @option
@item -page_duration @var{duration}
Preferred page duration, in microseconds. The muxer will attempt to create
pages that are approximately @var{duration} microseconds long. This allows the
user to compromise between seek granularity and container overhead. The default
is 1 second. A value of 0 will fill all segments, making pages as large as
possible. A value of 1 will effectively use 1 packet-per-page in most
situations, giving a small seek granularity at the cost of additional container
overhead.
@end table
@section segment, stream_segment, ssegment
Basic stream segmenter.
The segmenter muxer outputs streams to a number of separate files of nearly
fixed duration. Output filename pattern can be set in a fashion similar to
@ref{image2}.
@code{stream_segment} is a variant of the muxer used to write to
streaming output formats, i.e. which do not require global headers,
and is recommended for outputting e.g. to MPEG transport stream segments.
@code{ssegment} is a shorter alias for @code{stream_segment}.
Every segment starts with a keyframe of the selected reference stream,
which is set through the @option{reference_stream} option.
Note that if you want accurate splitting for a video file, you need to
make the input key frames correspond to the exact splitting times
expected by the segmenter, or the segment muxer will start the new
segment with the key frame found next after the specified start
time.
The segment muxer works best with a single constant frame rate video.
Optionally it can generate a list of the created segments, by setting
the option @var{segment_list}. The list type is specified by the
@var{segment_list_type} option.
The segment muxer supports the following options:
@table @option
@item reference_stream @var{specifier}
Set the reference stream, as specified by the string @var{specifier}.
If @var{specifier} is set to @code{auto}, the reference is choosen
automatically. Otherwise it must be a stream specifier (see the ``Stream
specifiers'' chapter in the ffmpeg manual) which specifies the
reference stream. The default value is @code{auto}.
@item segment_format @var{format}
Override the inner container format, by default it is guessed by the filename
extension.
@item segment_list @var{name}
Generate also a listfile named @var{name}. If not specified no
listfile is generated.
@item segment_list_flags @var{flags}
Set flags affecting the segment list generation.
It currently supports the following flags:
@table @samp
@item cache
Allow caching (only affects M3U8 list files).
@item live
Allow live-friendly file generation.
@end table
Default value is @code{samp}.
@item segment_list_size @var{size}
Update the list file so that it contains at most the last @var{size}
segments. If 0 the list file will contain all the segments. Default
value is 0.
@item segment_list_type @var{type}
Specify the format for the segment list file.
The following values are recognized:
@table @samp
@item flat
Generate a flat list for the created segments, one segment per line.
@item csv, ext
Generate a list for the created segments, one segment per line,
each line matching the format (comma-separated values):
@example
@var{segment_filename},@var{segment_start_time},@var{segment_end_time}
@end example
@var{segment_filename} is the name of the output file generated by the
muxer according to the provided pattern. CSV escaping (according to
RFC4180) is applied if required.
@var{segment_start_time} and @var{segment_end_time} specify
the segment start and end time expressed in seconds.
A list file with the suffix @code{".csv"} or @code{".ext"} will
auto-select this format.
@samp{ext} is deprecated in favor or @samp{csv}.
@item ffconcat
Generate an ffconcat file for the created segments. The resulting file
can be read using the FFmpeg @ref{concat} demuxer.
A list file with the suffix @code{".ffcat"} or @code{".ffconcat"} will
auto-select this format.
@item m3u8
Generate an extended M3U8 file, version 3, compliant with
@url{http://tools.ietf.org/id/draft-pantos-http-live-streaming}.
A list file with the suffix @code{".m3u8"} will auto-select this format.
@end table
If not specified the type is guessed from the list file name suffix.
@item segment_time @var{time}
Set segment duration to @var{time}, the value must be a duration
specification. Default value is "2". See also the
@option{segment_times} option.
Note that splitting may not be accurate, unless you force the
reference stream key-frames at the given time. See the introductory
notice and the examples below.
@item segment_time_delta @var{delta}
Specify the accuracy time when selecting the start time for a
segment, expressed as a duration specification. Default value is "0".
When delta is specified a key-frame will start a new segment if its
PTS satisfies the relation:
@example
PTS >= start_time - time_delta
@end example
This option is useful when splitting video content, which is always
split at GOP boundaries, in case a key frame is found just before the
specified split time.
In particular may be used in combination with the @file{ffmpeg} option
@var{force_key_frames}. The key frame times specified by
@var{force_key_frames} may not be set accurately because of rounding
issues, with the consequence that a key frame time may result set just
before the specified time. For constant frame rate videos a value of
1/2*@var{frame_rate} should address the worst case mismatch between
the specified time and the time set by @var{force_key_frames}.
@item segment_times @var{times}
Specify a list of split points. @var{times} contains a list of comma
separated duration specifications, in increasing order. See also
the @option{segment_time} option.
@item segment_frames @var{frames}
Specify a list of split video frame numbers. @var{frames} contains a
list of comma separated integer numbers, in increasing order.
This option specifies to start a new segment whenever a reference
stream key frame is found and the sequential number (starting from 0)
of the frame is greater or equal to the next value in the list.
@item segment_wrap @var{limit}
Wrap around segment index once it reaches @var{limit}.
@item segment_start_number @var{number}
Set the sequence number of the first segment. Defaults to @code{0}.
@item reset_timestamps @var{1|0}
Reset timestamps at the begin of each segment, so that each segment
will start with near-zero timestamps. It is meant to ease the playback
of the generated segments. May not work with some combinations of
muxers/codecs. It is set to @code{0} by default.
@item initial_offset @var{offset}
Specify timestamp offset to apply to the output packet timestamps. The
argument must be a time duration specification, and defaults to 0.
@end table
@subsection Examples
@itemize
@item
To remux the content of file @file{in.mkv} to a list of segments
@file{out-000.nut}, @file{out-001.nut}, etc., and write the list of
generated segments to @file{out.list}:
@example
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.list out%03d.nut
@end example
@item
As the example above, but segment the input file according to the split
points specified by the @var{segment_times} option:
@example
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 out%03d.nut
@end example
@item
As the example above, but use the @command{ffmpeg} @option{force_key_frames}
option to force key frames in the input at the specified location, together
with the segment option @option{segment_time_delta} to account for
possible roundings operated when setting key frame times.
@example
ffmpeg -i in.mkv -force_key_frames 1,2,3,5,8,13,21 -codec:v mpeg4 -codec:a pcm_s16le -map 0 \
-f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 -segment_time_delta 0.05 out%03d.nut
@end example
In order to force key frames on the input file, transcoding is
required.
@item
Segment the input file by splitting the input file according to the
frame numbers sequence specified with the @option{segment_frames} option:
@example
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_frames 100,200,300,500,800 out%03d.nut
@end example
@item
To convert the @file{in.mkv} to TS segments using the @code{libx264}
and @code{libfaac} encoders:
@example
ffmpeg -i in.mkv -map 0 -codec:v libx264 -codec:a libfaac -f ssegment -segment_list out.list out%03d.ts
@end example
@item
Segment the input file, and create an M3U8 live playlist (can be used
as live HLS source):
@example
ffmpeg -re -i in.mkv -codec copy -map 0 -f segment -segment_list playlist.m3u8 \
-segment_list_flags +live -segment_time 10 out%03d.mkv
@end example
@end itemize
@section tee
The tee muxer can be used to write the same data to several files or any
other kind of muxer. It can be used, for example, to both stream a video to
the network and save it to disk at the same time.
It is different from specifying several outputs to the @command{ffmpeg}
command-line tool because the audio and video data will be encoded only once
with the tee muxer; encoding can be a very expensive process. It is not
useful when using the libavformat API directly because it is then possible
to feed the same packets to several muxers directly.
The slave outputs are specified in the file name given to the muxer,
separated by '|'. If any of the slave name contains the '|' separator,
leading or trailing spaces or any special character, it must be
escaped (see the ``Quoting and escaping'' section in the ffmpeg-utils
manual).
Muxer options can be specified for each slave by prepending them as a list of
@var{key}=@var{value} pairs separated by ':', between square brackets. If
the options values contain a special character or the ':' separator, they
must be escaped; note that this is a second level escaping.
The following special options are also recognized:
@table @option
@item f
Specify the format name. Useful if it cannot be guessed from the
output name suffix.
@item bsfs[/@var{spec}]
Specify a list of bitstream filters to apply to the specified
output. It is possible to specify to which streams a given bitstream
filter applies, by appending a stream specifier to the option
separated by @code{/}. If the stream specifier is not specified, the
bistream filters will be applied to all streams in the output.
Several bitstream filters can be specified, separated by ",".
@item select
Select the streams that should be mapped to the slave output,
specified by a stream specifier. If not specified, this defaults to
all the input streams.
@end table
Some examples follow.
@itemize
@item
Encode something and both archive it in a WebM file and stream it
as MPEG-TS over UDP (the streams need to be explicitly mapped):
@example
ffmpeg -i ... -c:v libx264 -c:a mp2 -f tee -map 0:v -map 0:a
"archive-20121107.mkv|[f=mpegts]udp://10.0.1.255:1234/"
@end example
@item
Use @command{ffmpeg} to encode the input, and send the output
to three different destinations. The @code{dump_extra} bitstream
filter is used to add extradata information to all the output video
keyframes packets, as requested by the MPEG-TS format. The select
option is applied to @file{out.aac} in order to make it contain only
audio packets.
@example
ffmpeg -i ... -map 0 -flags +global_header -c:v libx264 -c:a aac -strict experimental
-f tee "[bsfs/v=dump_extra]out.ts|[movflags=+faststart]out.mp4|[select=a]out.aac"
@end example
@end itemize
Note: some codecs may need different options depending on the output format;
the auto-detection of this can not work with the tee muxer. The main example
is the @option{global_header} flag.
@c man end MUXERS

/contrib/sdk/sources/ffmpeg/doc/nut.texi
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\input texinfo @c -*- texinfo -*-
@settitle NUT
@titlepage
@center @titlefont{NUT}
@end titlepage
@top
@contents
@chapter Description
NUT is a low overhead generic container format. It stores audio, video,
subtitle and user-defined streams in a simple, yet efficient, way.
It was created by a group of FFmpeg and MPlayer developers in 2003
and was finalized in 2008.
The official nut specification is at svn://svn.mplayerhq.hu/nut
In case of any differences between this text and the official specification,
the official specification shall prevail.
@chapter Container-specific codec tags
@section Generic raw YUVA formats
Since many exotic planar YUVA pixel formats are not considered by
the AVI/QuickTime FourCC lists, the following scheme is adopted for
representing them.
The first two bytes can contain the values:
Y1 = only Y
Y2 = Y+A
Y3 = YUV
Y4 = YUVA
The third byte represents the width and height chroma subsampling
values for the UV planes, that is the amount to shift the luma
width/height right to find the chroma width/height.
The fourth byte is the number of bits used (8, 16, ...).
If the order of bytes is inverted, that means that each component has
to be read big-endian.
@section Raw Audio
@multitable @columnfractions .4 .4
@item ALAW @tab A-LAW
@item ULAW @tab MU-LAW
@item P<type><interleaving><bits> @tab little-endian PCM
@item <bits><interleaving><type>P @tab big-endian PCM
@end multitable
<type> is S for signed integer, U for unsigned integer, F for IEEE float
<interleaving> is D for default, P is for planar.
<bits> is 8/16/24/32
@example
PFD[32] would for example be signed 32 bit little-endian IEEE float
@end example
@section Subtitles
@multitable @columnfractions .4 .4
@item UTF8 @tab Raw UTF-8
@item SSA[0] @tab SubStation Alpha
@item DVDS @tab DVD subtitles
@item DVBS @tab DVB subtitles
@end multitable
@section Raw Data
@multitable @columnfractions .4 .4
@item UTF8 @tab Raw UTF-8
@end multitable
@section Codecs
@multitable @columnfractions .4 .4
@item 3IV1 @tab non-compliant MPEG-4 generated by old 3ivx
@item ASV1 @tab Asus Video
@item ASV2 @tab Asus Video 2
@item CVID @tab Cinepak
@item CYUV @tab Creative YUV
@item DIVX @tab non-compliant MPEG-4 generated by old DivX
@item DUCK @tab Truemotion 1
@item FFV1 @tab FFmpeg video 1
@item FFVH @tab FFmpeg Huffyuv
@item H261 @tab ITU H.261
@item H262 @tab ITU H.262
@item H263 @tab ITU H.263
@item H264 @tab ITU H.264
@item HFYU @tab Huffyuv
@item I263 @tab Intel H.263
@item IV31 @tab Indeo 3.1
@item IV32 @tab Indeo 3.2
@item IV50 @tab Indeo 5.0
@item LJPG @tab ITU JPEG (lossless)
@item MJLS @tab ITU JPEG-LS
@item MJPG @tab ITU JPEG
@item MPG4 @tab MS MPEG-4v1 (not ISO MPEG-4)
@item MP42 @tab MS MPEG-4v2
@item MP43 @tab MS MPEG-4v3
@item MP4V @tab ISO MPEG-4 Part 2 Video (from old encoders)
@item mpg1 @tab ISO MPEG-1 Video
@item mpg2 @tab ISO MPEG-2 Video
@item MRLE @tab MS RLE
@item MSVC @tab MS Video 1
@item RT21 @tab Indeo 2.1
@item RV10 @tab RealVideo 1.0
@item RV20 @tab RealVideo 2.0
@item RV30 @tab RealVideo 3.0
@item RV40 @tab RealVideo 4.0
@item SNOW @tab FFmpeg Snow
@item SVQ1 @tab Sorenson Video 1
@item SVQ3 @tab Sorenson Video 3
@item theo @tab Xiph Theora
@item TM20 @tab Truemotion 2.0
@item UMP4 @tab non-compliant MPEG-4 generated by UB Video MPEG-4
@item VCR1 @tab ATI VCR1
@item VP30 @tab VP 3.0
@item VP31 @tab VP 3.1
@item VP50 @tab VP 5.0
@item VP60 @tab VP 6.0
@item VP61 @tab VP 6.1
@item VP62 @tab VP 6.2
@item VP70 @tab VP 7.0
@item WMV1 @tab MS WMV7
@item WMV2 @tab MS WMV8
@item WMV3 @tab MS WMV9
@item WV1F @tab non-compliant MPEG-4 generated by ?
@item WVC1 @tab VC-1
@item XVID @tab non-compliant MPEG-4 generated by old Xvid
@item XVIX @tab non-compliant MPEG-4 generated by old Xvid with interlacing bug
@end multitable

/contrib/sdk/sources/ffmpeg/doc/optimization.txt
0,0 → 1,288
optimization Tips (for libavcodec):
===================================
What to optimize:
-----------------
If you plan to do non-x86 architecture specific optimizations (SIMD normally),
then take a look in the x86/ directory, as most important functions are
already optimized for MMX.
If you want to do x86 optimizations then you can either try to finetune the
stuff in the x86 directory or find some other functions in the C source to
optimize, but there aren't many left.
Understanding these overoptimized functions:
--------------------------------------------
As many functions tend to be a bit difficult to understand because
of optimizations, it can be hard to optimize them further, or write
architecture-specific versions. It is recommended to look at older
revisions of the interesting files (web frontends for the various FFmpeg
branches are listed at http://ffmpeg.org/download.html).
Alternatively, look into the other architecture-specific versions in
the x86/, ppc/, alpha/ subdirectories. Even if you don't exactly
comprehend the instructions, it could help understanding the functions
and how they can be optimized.
NOTE: If you still don't understand some function, ask at our mailing list!!!
(http://lists.ffmpeg.org/mailman/listinfo/ffmpeg-devel)
When is an optimization justified?
----------------------------------
Normally, clean and simple optimizations for widely used codecs are
justified even if they only achieve an overall speedup of 0.1%. These
speedups accumulate and can make a big difference after awhile. Also, if
none of the following factors get worse due to an optimization -- speed,
binary code size, source size, source readability -- and at least one
factor improves, then an optimization is always a good idea even if the
overall gain is less than 0.1%. For obscure codecs that are not often
used, the goal is more toward keeping the code clean, small, and
readable instead of making it 1% faster.
WTF is that function good for ....:
-----------------------------------
The primary purpose of this list is to avoid wasting time optimizing functions
which are rarely used.
put(_no_rnd)_pixels{,_x2,_y2,_xy2}
Used in motion compensation (en/decoding).
avg_pixels{,_x2,_y2,_xy2}
Used in motion compensation of B-frames.
These are less important than the put*pixels functions.
avg_no_rnd_pixels*
unused
pix_abs16x16{,_x2,_y2,_xy2}
Used in motion estimation (encoding) with SAD.
pix_abs8x8{,_x2,_y2,_xy2}
Used in motion estimation (encoding) with SAD of MPEG-4 4MV only.
These are less important than the pix_abs16x16* functions.
put_mspel8_mc* / wmv2_mspel8*
Used only in WMV2.
it is not recommended that you waste your time with these, as WMV2
is an ugly and relatively useless codec.
mpeg4_qpel* / *qpel_mc*
Used in MPEG-4 qpel motion compensation (encoding & decoding).
The qpel8 functions are used only for 4mv,
the avg_* functions are used only for B-frames.
Optimizing them should have a significant impact on qpel
encoding & decoding.
qpel{8,16}_mc??_old_c / *pixels{8,16}_l4
Just used to work around a bug in an old libavcodec encoder version.
Don't optimize them.
tpel_mc_func {put,avg}_tpel_pixels_tab
Used only for SVQ3, so only optimize them if you need fast SVQ3 decoding.
add_bytes/diff_bytes
For huffyuv only, optimize if you want a faster ffhuffyuv codec.
get_pixels / diff_pixels
Used for encoding, easy.
clear_blocks
easiest to optimize
gmc
Used for MPEG-4 gmc.
Optimizing this should have a significant effect on the gmc decoding
speed.
gmc1
Used for chroma blocks in MPEG-4 gmc with 1 warp point
(there are 4 luma & 2 chroma blocks per macroblock, so
only 1/3 of the gmc blocks use this, the other 2/3
use the normal put_pixel* code, but only if there is
just 1 warp point).
Note: DivX5 gmc always uses just 1 warp point.
pix_sum
Used for encoding.
hadamard8_diff / sse / sad == pix_norm1 / dct_sad / quant_psnr / rd / bit
Specific compare functions used in encoding, it depends upon the
command line switches which of these are used.
Don't waste your time with dct_sad & quant_psnr, they aren't
really useful.
put_pixels_clamped / add_pixels_clamped
Used for en/decoding in the IDCT, easy.
Note, some optimized IDCTs have the add/put clamped code included and
then put_pixels_clamped / add_pixels_clamped will be unused.
idct/fdct
idct (encoding & decoding)
fdct (encoding)
difficult to optimize
dct_quantize_trellis
Used for encoding with trellis quantization.
difficult to optimize
dct_quantize
Used for encoding.
dct_unquantize_mpeg1
Used in MPEG-1 en/decoding.
dct_unquantize_mpeg2
Used in MPEG-2 en/decoding.
dct_unquantize_h263
Used in MPEG-4/H.263 en/decoding.
FIXME remaining functions?
BTW, most of these functions are in dsputil.c/.h, some are in mpegvideo.c/.h.
Alignment:
Some instructions on some architectures have strict alignment restrictions,
for example most SSE/SSE2 instructions on x86.
The minimum guaranteed alignment is written in the .h files, for example:
void (*put_pixels_clamped)(const int16_t *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
General Tips:
-------------
Use asm loops like:
__asm__(
"1: ....
...
"jump_instruction ....
Do not use C loops:
do{
__asm__(
...
}while()
For x86, mark registers that are clobbered in your asm. This means both
general x86 registers (e.g. eax) as well as XMM registers. This last one is
particularly important on Win64, where xmm6-15 are callee-save, and not
restoring their contents leads to undefined results. In external asm (e.g.
yasm), you do this by using:
cglobal functon_name, num_args, num_regs, num_xmm_regs
In inline asm, you specify clobbered registers at the end of your asm:
__asm__(".." ::: "%eax").
If gcc is not set to support sse (-msse) it will not accept xmm registers
in the clobber list. For that we use two macros to declare the clobbers.
XMM_CLOBBERS should be used when there are other clobbers, for example:
__asm__(".." ::: XMM_CLOBBERS("xmm0",) "eax");
and XMM_CLOBBERS_ONLY should be used when the only clobbers are xmm registers:
__asm__(".." :: XMM_CLOBBERS_ONLY("xmm0"));
Do not expect a compiler to maintain values in your registers between separate
(inline) asm code blocks. It is not required to. For example, this is bad:
__asm__("movdqa %0, %%xmm7" : src);
/* do something */
__asm__("movdqa %%xmm7, %1" : dst);
- first of all, you're assuming that the compiler will not use xmm7 in
between the two asm blocks. It probably won't when you test it, but it's
a poor assumption that will break at some point for some --cpu compiler flag
- secondly, you didn't mark xmm7 as clobbered. If you did, the compiler would
have restored the original value of xmm7 after the first asm block, thus
rendering the combination of the two blocks of code invalid
Code that depends on data in registries being untouched, should be written as
a single __asm__() statement. Ideally, a single function contains only one
__asm__() block.
Use external asm (nasm/yasm) or inline asm (__asm__()), do not use intrinsics.
The latter requires a good optimizing compiler which gcc is not.
Inline asm vs. external asm
---------------------------
Both inline asm (__asm__("..") in a .c file, handled by a compiler such as gcc)
and external asm (.s or .asm files, handled by an assembler such as yasm/nasm)
are accepted in FFmpeg. Which one to use differs per specific case.
- if your code is intended to be inlined in a C function, inline asm is always
better, because external asm cannot be inlined
- if your code calls external functions, yasm is always better
- if your code takes huge and complex structs as function arguments (e.g.
MpegEncContext; note that this is not ideal and is discouraged if there
are alternatives), then inline asm is always better, because predicting
member offsets in complex structs is almost impossible. It's safest to let
the compiler take care of that
- in many cases, both can be used and it just depends on the preference of the
person writing the asm. For new asm, the choice is up to you. For existing
asm, you'll likely want to maintain whatever form it is currently in unless
there is a good reason to change it.
- if, for some reason, you believe that a particular chunk of existing external
asm could be improved upon further if written in inline asm (or the other
way around), then please make the move from external asm <-> inline asm a
separate patch before your patches that actually improve the asm.
Links:
======
http://www.aggregate.org/MAGIC/
x86-specific:
-------------
http://developer.intel.com/design/pentium4/manuals/248966.htm
The IA-32 Intel Architecture Software Developer's Manual, Volume 2:
Instruction Set Reference
http://developer.intel.com/design/pentium4/manuals/245471.htm
http://www.agner.org/assem/
AMD Athlon Processor x86 Code Optimization Guide:
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/22007.pdf
ARM-specific:
-------------
ARM Architecture Reference Manual (up to ARMv5TE):
http://www.arm.com/community/university/eulaarmarm.html
Procedure Call Standard for the ARM Architecture:
http://www.arm.com/pdfs/aapcs.pdf
Optimization guide for ARM9E (used in Nokia 770 Internet Tablet):
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0240b/DDI0240A.pdf
Optimization guide for ARM11 (used in Nokia N800 Internet Tablet):
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0211j/DDI0211J_arm1136_r1p5_trm.pdf
Optimization guide for Intel XScale (used in Sharp Zaurus PDA):
http://download.intel.com/design/intelxscale/27347302.pdf
Intel Wireless MMX 2 Coprocessor: Programmers Reference Manual
http://download.intel.com/design/intelxscale/31451001.pdf
PowerPC-specific:
-----------------
PowerPC32/AltiVec PIM:
www.freescale.com/files/32bit/doc/ref_manual/ALTIVECPEM.pdf
PowerPC32/AltiVec PEM:
www.freescale.com/files/32bit/doc/ref_manual/ALTIVECPIM.pdf
CELL/SPU:
http://www-01.ibm.com/chips/techlib/techlib.nsf/techdocs/30B3520C93F437AB87257060006FFE5E/$file/Language_Extensions_for_CBEA_2.4.pdf
http://www-01.ibm.com/chips/techlib/techlib.nsf/techdocs/9F820A5FFA3ECE8C8725716A0062585F/$file/CBE_Handbook_v1.1_24APR2007_pub.pdf
SPARC-specific:
---------------
SPARC Joint Programming Specification (JPS1): Commonality
http://www.fujitsu.com/downloads/PRMPWR/JPS1-R1.0.4-Common-pub.pdf
UltraSPARC III Processor User's Manual (contains instruction timings)
http://www.sun.com/processors/manuals/USIIIv2.pdf
VIS Whitepaper (contains optimization guidelines)
http://www.sun.com/processors/vis/download/vis/vis_whitepaper.pdf
GCC asm links:
--------------
official doc but quite ugly
http://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html
a bit old (note "+" is valid for input-output, even though the next disagrees)
http://www.cs.virginia.edu/~clc5q/gcc-inline-asm.pdf

/contrib/sdk/sources/ffmpeg/doc/outdevs.texi
0,0 → 1,289
@chapter Output Devices
@c man begin OUTPUT DEVICES
Output devices are configured elements in FFmpeg that can write
multimedia data to an output device attached to your system.
When you configure your FFmpeg build, all the supported output devices
are enabled by default. You can list all available ones using the
configure option "--list-outdevs".
You can disable all the output devices using the configure option
"--disable-outdevs", and selectively enable an output device using the
option "--enable-outdev=@var{OUTDEV}", or you can disable a particular
input device using the option "--disable-outdev=@var{OUTDEV}".
The option "-formats" of the ff* tools will display the list of
enabled output devices (amongst the muxers).
A description of the currently available output devices follows.
@section alsa
ALSA (Advanced Linux Sound Architecture) output device.
@section caca
CACA output device.
This output device allows to show a video stream in CACA window.
Only one CACA window is allowed per application, so you can
have only one instance of this output device in an application.
To enable this output device you need to configure FFmpeg with
@code{--enable-libcaca}.
libcaca is a graphics library that outputs text instead of pixels.
For more information about libcaca, check:
@url{http://caca.zoy.org/wiki/libcaca}
@subsection Options
@table @option
@item window_title
Set the CACA window title, if not specified default to the filename
specified for the output device.
@item window_size
Set the CACA window size, can be a string of the form
@var{width}x@var{height} or a video size abbreviation.
If not specified it defaults to the size of the input video.
@item driver
Set display driver.
@item algorithm
Set dithering algorithm. Dithering is necessary
because the picture being rendered has usually far more colours than
the available palette.
The accepted values are listed with @code{-list_dither algorithms}.
@item antialias
Set antialias method. Antialiasing smoothens the rendered
image and avoids the commonly seen staircase effect.
The accepted values are listed with @code{-list_dither antialiases}.
@item charset
Set which characters are going to be used when rendering text.
The accepted values are listed with @code{-list_dither charsets}.
@item color
Set color to be used when rendering text.
The accepted values are listed with @code{-list_dither colors}.
@item list_drivers
If set to @option{true}, print a list of available drivers and exit.
@item list_dither
List available dither options related to the argument.
The argument must be one of @code{algorithms}, @code{antialiases},
@code{charsets}, @code{colors}.
@end table
@subsection Examples
@itemize
@item
The following command shows the @command{ffmpeg} output is an
CACA window, forcing its size to 80x25:
@example
ffmpeg -i INPUT -vcodec rawvideo -pix_fmt rgb24 -window_size 80x25 -f caca -
@end example
@item
Show the list of available drivers and exit:
@example
ffmpeg -i INPUT -pix_fmt rgb24 -f caca -list_drivers true -
@end example
@item
Show the list of available dither colors and exit:
@example
ffmpeg -i INPUT -pix_fmt rgb24 -f caca -list_dither colors -
@end example
@end itemize
@section fbdev
Linux framebuffer output device.
The Linux framebuffer is a graphic hardware-independent abstraction
layer to show graphics on a computer monitor, typically on the
console. It is accessed through a file device node, usually
@file{/dev/fb0}.
For more detailed information read the file
@file{Documentation/fb/framebuffer.txt} included in the Linux source tree.
@subsection Options
@table @option
@item xoffset
@item yoffset
Set x/y coordinate of top left corner. Default is 0.
@end table
@subsection Examples
Play a file on framebuffer device @file{/dev/fb0}.
Required pixel format depends on current framebuffer settings.
@example
ffmpeg -re -i INPUT -vcodec rawvideo -pix_fmt bgra -f fbdev /dev/fb0
@end example
See also @url{http://linux-fbdev.sourceforge.net/}, and fbset(1).
@section oss
OSS (Open Sound System) output device.
@section pulse
PulseAudio output device.
To enable this output device you need to configure FFmpeg with @code{--enable-libpulse}.
More information about PulseAudio can be found on @url{http://www.pulseaudio.org}
@subsection Options
@table @option
@item server
Connect to a specific PulseAudio server, specified by an IP address.
Default server is used when not provided.
@item name
Specify the application name PulseAudio will use when showing active clients,
by default it is the @code{LIBAVFORMAT_IDENT} string.
@item stream_name
Specify the stream name PulseAudio will use when showing active streams,
by default it is set to the specified output name.
@item device
Specify the device to use. Default device is used when not provided.
List of output devices can be obtained with command @command{pactl list sinks}.
@end table
@subsection Examples
Play a file on default device on default server:
@example
ffmpeg -i INPUT -f pulse "stream name"
@end example
@section sdl
SDL (Simple DirectMedia Layer) output device.
This output device allows to show a video stream in an SDL
window. Only one SDL window is allowed per application, so you can
have only one instance of this output device in an application.
To enable this output device you need libsdl installed on your system
when configuring your build.
For more information about SDL, check:
@url{http://www.libsdl.org/}
@subsection Options
@table @option
@item window_title
Set the SDL window title, if not specified default to the filename
specified for the output device.
@item icon_title
Set the name of the iconified SDL window, if not specified it is set
to the same value of @var{window_title}.
@item window_size
Set the SDL window size, can be a string of the form
@var{width}x@var{height} or a video size abbreviation.
If not specified it defaults to the size of the input video,
downscaled according to the aspect ratio.
@item window_fullscreen
Set fullscreen mode when non-zero value is provided.
Zero is a default.
@end table
@subsection Examples
The following command shows the @command{ffmpeg} output is an
SDL window, forcing its size to the qcif format:
@example
ffmpeg -i INPUT -vcodec rawvideo -pix_fmt yuv420p -window_size qcif -f sdl "SDL output"
@end example
@section sndio
sndio audio output device.
@section xv
XV (XVideo) output device.
This output device allows to show a video stream in a X Window System
window.
@subsection Options
@table @option
@item display_name
Specify the hardware display name, which determines the display and
communications domain to be used.
The display name or DISPLAY environment variable can be a string in
the format @var{hostname}[:@var{number}[.@var{screen_number}]].
@var{hostname} specifies the name of the host machine on which the
display is physically attached. @var{number} specifies the number of
the display server on that host machine. @var{screen_number} specifies
the screen to be used on that server.
If unspecified, it defaults to the value of the DISPLAY environment
variable.
For example, @code{dual-headed:0.1} would specify screen 1 of display
0 on the machine named ``dual-headed''.
Check the X11 specification for more detailed information about the
display name format.
@item window_size
Set the created window size, can be a string of the form
@var{width}x@var{height} or a video size abbreviation. If not
specified it defaults to the size of the input video.
@item window_x
@item window_y
Set the X and Y window offsets for the created window. They are both
set to 0 by default. The values may be ignored by the window manager.
@item window_title
Set the window title, if not specified default to the filename
specified for the output device.
@end table
For more information about XVideo see @url{http://www.x.org/}.
@subsection Examples
@itemize
@item
Decode, display and encode video input with @command{ffmpeg} at the
same time:
@example
ffmpeg -i INPUT OUTPUT -f xv display
@end example
@item
Decode and display the input video to multiple X11 windows:
@example
ffmpeg -i INPUT -f xv normal -vf negate -f xv negated
@end example
@end itemize
@c man end OUTPUT DEVICES

/contrib/sdk/sources/ffmpeg/doc/platform.texi
0,0 → 1,370
\input texinfo @c -*- texinfo -*-
@settitle Platform Specific Information
@titlepage
@center @titlefont{Platform Specific Information}
@end titlepage
@top
@contents
@chapter Unix-like
Some parts of FFmpeg cannot be built with version 2.15 of the GNU
assembler which is still provided by a few AMD64 distributions. To
make sure your compiler really uses the required version of gas
after a binutils upgrade, run:
@example
$(gcc -print-prog-name=as) --version
@end example
If not, then you should install a different compiler that has no
hard-coded path to gas. In the worst case pass @code{--disable-asm}
to configure.
@section BSD
BSD make will not build FFmpeg, you need to install and use GNU Make
(@command{gmake}).
@section (Open)Solaris
GNU Make is required to build FFmpeg, so you have to invoke (@command{gmake}),
standard Solaris Make will not work. When building with a non-c99 front-end
(gcc, generic suncc) add either @code{--extra-libs=/usr/lib/values-xpg6.o}
or @code{--extra-libs=/usr/lib/64/values-xpg6.o} to the configure options
since the libc is not c99-compliant by default. The probes performed by
configure may raise an exception leading to the death of configure itself
due to a bug in the system shell. Simply invoke a different shell such as
bash directly to work around this:
@example
bash ./configure
@end example
@anchor{Darwin}
@section Darwin (Mac OS X, iPhone)
The toolchain provided with Xcode is sufficient to build the basic
unacelerated code.
Mac OS X on PowerPC or ARM (iPhone) requires a preprocessor from
@url{http://github.com/yuvi/gas-preprocessor} to build the optimized
assembler functions. Just download the Perl script and put it somewhere
in your PATH, FFmpeg's configure will pick it up automatically.
Mac OS X on amd64 and x86 requires @command{yasm} to build most of the
optimized assembler functions. @uref{http://www.finkproject.org/, Fink},
@uref{http://www.gentoo.org/proj/en/gentoo-alt/prefix/bootstrap-macos.xml, Gentoo Prefix},
@uref{http://mxcl.github.com/homebrew/, Homebrew}
or @uref{http://www.macports.org, MacPorts} can easily provide it.
@chapter DOS
Using a cross-compiler is preferred for various reasons.
@url{http://www.delorie.com/howto/djgpp/linux-x-djgpp.html}
@chapter OS/2
For information about compiling FFmpeg on OS/2 see
@url{http://www.edm2.com/index.php/FFmpeg}.
@chapter Windows
To get help and instructions for building FFmpeg under Windows, check out
the FFmpeg Windows Help Forum at @url{http://ffmpeg.zeranoe.com/forum/}.
@section Native Windows compilation using MinGW or MinGW-w64
FFmpeg can be built to run natively on Windows using the MinGW or MinGW-w64
toolchains. Install the latest versions of MSYS and MinGW or MinGW-w64 from
@url{http://www.mingw.org/} or @url{http://mingw-w64.sourceforge.net/}.
You can find detailed installation instructions in the download section and
the FAQ.
Notes:
@itemize
@item Building natively using MSYS can be sped up by disabling implicit rules
in the Makefile by calling @code{make -r} instead of plain @code{make}. This
speed up is close to non-existent for normal one-off builds and is only
noticeable when running make for a second time (for example during
@code{make install}).
@item In order to compile FFplay, you must have the MinGW development library
of @uref{http://www.libsdl.org/, SDL} and @code{pkg-config} installed.
@item By using @code{./configure --enable-shared} when configuring FFmpeg,
you can build the FFmpeg libraries (e.g. libavutil, libavcodec,
libavformat) as DLLs.
@end itemize
@section Microsoft Visual C++ or Intel C++ Compiler for Windows
FFmpeg can be built with MSVC or ICL using a C99-to-C89 conversion utility and
wrapper. For ICL, only the wrapper is used, since ICL supports C99.
You will need the following prerequisites:
@itemize
@item @uref{http://download.videolan.org/pub/contrib/c99-to-c89/, C99-to-C89 Converter & Wrapper}
@item @uref{http://code.google.com/p/msinttypes/, msinttypes}
@item @uref{http://www.mingw.org/, MSYS}
@item @uref{http://yasm.tortall.net/, YASM}
@item @uref{http://gnuwin32.sourceforge.net/packages/bc.htm, bc for Windows} if
you want to run @uref{fate.html, FATE}.
@end itemize
To set up a proper environment in MSYS, you need to run @code{msys.bat} from
the Visual Studio or Intel Compiler command prompt.
Place @code{makedef}, @code{c99wrap.exe}, @code{c99conv.exe}, and @code{yasm.exe}
somewhere in your @code{PATH}.
Next, make sure @code{inttypes.h} and any other headers and libs you want to use
are located in a spot that the compiler can see. Do so by modifying the @code{LIB}
and @code{INCLUDE} environment variables to include the @strong{Windows} paths to
these directories. Alternatively, you can try and use the
@code{--extra-cflags}/@code{--extra-ldflags} configure options.
Finally, run:
@example
For MSVC:
./configure --toolchain=msvc
For ICL:
./configure --toolchain=icl
make
make install
@end example
If you wish to compile shared libraries, add @code{--enable-shared} to your
configure options. Note that due to the way MSVC and ICL handle DLL imports and
exports, you cannot compile static and shared libraries at the same time, and
enabling shared libraries will automatically disable the static ones.
Notes:
@itemize
@item It is possible that coreutils' @code{link.exe} conflicts with MSVC's linker.
You can find out by running @code{which link} to see which @code{link.exe} you
are using. If it is located at @code{/bin/link.exe}, then you have the wrong one
in your @code{PATH}. Either move or remove that copy, or make sure MSVC's
@code{link.exe} takes precedence in your @code{PATH} over coreutils'.
@item If you wish to build with zlib support, you will have to grab a compatible
zlib binary from somewhere, with an MSVC import lib, or if you wish to link
statically, you can follow the instructions below to build a compatible
@code{zlib.lib} with MSVC. Regardless of which method you use, you must still
follow step 3, or compilation will fail.
@enumerate
@item Grab the @uref{http://zlib.net/, zlib sources}.
@item Edit @code{win32/Makefile.msc} so that it uses -MT instead of -MD, since
this is how FFmpeg is built as well.
@item Edit @code{zconf.h} and remove its inclusion of @code{unistd.h}. This gets
erroneously included when building FFmpeg.
@item Run @code{nmake -f win32/Makefile.msc}.
@item Move @code{zlib.lib}, @code{zconf.h}, and @code{zlib.h} to somewhere MSVC
can see.
@end enumerate
@item FFmpeg has been tested with the following on i686 and x86_64:
@itemize
@item Visual Studio 2010 Pro and Express
@item Visual Studio 2012 Pro and Express
@item Intel Composer XE 2013
@end itemize
Anything else is not officially supported.
@end itemize
@subsection Linking to FFmpeg with Microsoft Visual C++
If you plan to link with MSVC-built static libraries, you will need
to make sure you have @code{Runtime Library} set to
@code{Multi-threaded (/MT)} in your project's settings.
You will need to define @code{inline} to something MSVC understands:
@example
#define inline __inline
@end example
Also note, that as stated in @strong{Microsoft Visual C++}, you will need
an MSVC-compatible @uref{http://code.google.com/p/msinttypes/, inttypes.h}.
If you plan on using import libraries created by dlltool, you must
set @code{References} to @code{No (/OPT:NOREF)} under the linker optimization
settings, otherwise the resulting binaries will fail during runtime.
This is not required when using import libraries generated by @code{lib.exe}.
This issue is reported upstream at
@url{http://sourceware.org/bugzilla/show_bug.cgi?id=12633}.
To create import libraries that work with the @code{/OPT:REF} option
(which is enabled by default in Release mode), follow these steps:
@enumerate
@item Open the @emph{Visual Studio Command Prompt}.
Alternatively, in a normal command line prompt, call @file{vcvars32.bat}
which sets up the environment variables for the Visual C++ tools
(the standard location for this file is something like
@file{C:\Program Files (x86_\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat}).
@item Enter the @file{bin} directory where the created LIB and DLL files
are stored.
@item Generate new import libraries with @command{lib.exe}:
@example
lib /machine:i386 /def:..\lib\foo-version.def /out:foo.lib
@end example
Replace @code{foo-version} and @code{foo} with the respective library names.
@end enumerate
@anchor{Cross compilation for Windows with Linux}
@section Cross compilation for Windows with Linux
You must use the MinGW cross compilation tools available at
@url{http://www.mingw.org/}.
Then configure FFmpeg with the following options:
@example
./configure --target-os=mingw32 --cross-prefix=i386-mingw32msvc-
@end example
(you can change the cross-prefix according to the prefix chosen for the
MinGW tools).
Then you can easily test FFmpeg with @uref{http://www.winehq.com/, Wine}.
@section Compilation under Cygwin
Please use Cygwin 1.7.x as the obsolete 1.5.x Cygwin versions lack
llrint() in its C library.
Install your Cygwin with all the "Base" packages, plus the
following "Devel" ones:
@example
binutils, gcc4-core, make, git, mingw-runtime, texi2html
@end example
In order to run FATE you will also need the following "Utils" packages:
@example
bc, diffutils
@end example
If you want to build FFmpeg with additional libraries, download Cygwin
"Devel" packages for Ogg and Vorbis from any Cygwin packages repository:
@example
libogg-devel, libvorbis-devel
@end example
These library packages are only available from
@uref{http://sourceware.org/cygwinports/, Cygwin Ports}:
@example
yasm, libSDL-devel, libfaac-devel, libaacplus-devel, libgsm-devel, libmp3lame-devel,
libschroedinger1.0-devel, speex-devel, libtheora-devel, libxvidcore-devel
@end example
The recommendation for x264 is to build it from source, as it evolves too
quickly for Cygwin Ports to be up to date.
@section Crosscompilation for Windows under Cygwin
With Cygwin you can create Windows binaries that do not need the cygwin1.dll.
Just install your Cygwin as explained before, plus these additional
"Devel" packages:
@example
gcc-mingw-core, mingw-runtime, mingw-zlib
@end example
and add some special flags to your configure invocation.
For a static build run
@example
./configure --target-os=mingw32 --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
@end example
and for a build with shared libraries
@example
./configure --target-os=mingw32 --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
@end example
@chapter Plan 9
The native @uref{http://plan9.bell-labs.com/plan9/, Plan 9} compiler
does not implement all the C99 features needed by FFmpeg so the gcc
port must be used. Furthermore, a few items missing from the C
library and shell environment need to be fixed.
@itemize
@item GNU awk, grep, make, and sed
Working packages of these tools can be found at
@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9}.
They can be installed with @uref{http://9front.org/, 9front's} @code{pkg}
utility by setting @code{pkgpath} to
@code{http://ports2plan9.googlecode.com/files/}.
@item Missing/broken @code{head} and @code{printf} commands
Replacements adequate for building FFmpeg can be found in the
@code{compat/plan9} directory. Place these somewhere they will be
found by the shell. These are not full implementations of the
commands and are @emph{not} suitable for general use.
@item Missing C99 @code{stdint.h} and @code{inttypes.h}
Replacement headers are available from
@url{http://code.google.com/p/plan9front/issues/detail?id=152}.
@item Missing or non-standard library functions
Some functions in the C library are missing or incomplete. The
@code{@uref{http://ports2plan9.googlecode.com/files/gcc-apelibs-1207.tbz,
gcc-apelibs-1207}} package from
@uref{http://code.google.com/p/ports2plan9/downloads/list, ports2plan9}
includes an updated C library, but installing the full package gives
unusable executables. Instead, keep the files from @code{gccbin.tgz}
under @code{/386/lib/gnu}. From the @code{libc.a} archive in the
@code{gcc-apelibs-1207} package, extract the following object files and
turn them into a library:
@itemize
@item @code{strerror.o}
@item @code{strtoll.o}
@item @code{snprintf.o}
@item @code{vsnprintf.o}
@item @code{vfprintf.o}
@item @code{_IO_getc.o}
@item @code{_IO_putc.o}
@end itemize
Use the @code{--extra-libs} option of @code{configure} to inform the
build system of this library.
@item FPU exceptions enabled by default
Unlike most other systems, Plan 9 enables FPU exceptions by default.
These must be disabled before calling any FFmpeg functions. While the
included tools will do this automatically, other users of the
libraries must do it themselves.
@end itemize
@bye

/contrib/sdk/sources/ffmpeg/doc/print_options.c
0,0 → 1,126
/*
* Copyright (c) 2012 Anton Khirnov
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* generate texinfo manpages for avoptions
*/
#include <stddef.h>
#include <string.h>
#include <float.h>
#include "libavformat/avformat.h"
#include "libavformat/options_table.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/options_table.h"
#include "libavutil/opt.h"
static void print_usage(void)
{
fprintf(stderr, "Usage: enum_options type\n"
"type: format codec\n");
exit(1);
}
static void print_option(const AVOption *opts, const AVOption *o, int per_stream)
{
if (!(o->flags & (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM)))
return;
printf("@item -%s%s @var{", o->name, per_stream ? "[:stream_specifier]" : "");
switch (o->type) {
case AV_OPT_TYPE_BINARY: printf("hexadecimal string"); break;
case AV_OPT_TYPE_STRING: printf("string"); break;
case AV_OPT_TYPE_INT:
case AV_OPT_TYPE_INT64: printf("integer"); break;
case AV_OPT_TYPE_FLOAT:
case AV_OPT_TYPE_DOUBLE: printf("float"); break;
case AV_OPT_TYPE_RATIONAL: printf("rational number"); break;
case AV_OPT_TYPE_FLAGS: printf("flags"); break;
default: printf("value"); break;
}
printf("} (@emph{");
if (o->flags & AV_OPT_FLAG_DECODING_PARAM) {
printf("input");
if (o->flags & AV_OPT_FLAG_ENCODING_PARAM)
printf("/");
}
if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) printf("output");
if (o->flags & AV_OPT_FLAG_AUDIO_PARAM) printf(",audio");
if (o->flags & AV_OPT_FLAG_VIDEO_PARAM) printf(",video");
if (o->flags & AV_OPT_FLAG_SUBTITLE_PARAM) printf(",subtitles");
printf("})\n");
if (o->help)
printf("%s\n", o->help);
if (o->unit) {
const AVOption *u;
printf("\nPossible values:\n@table @samp\n");
for (u = opts; u->name; u++) {
if (u->type == AV_OPT_TYPE_CONST && u->unit && !strcmp(u->unit, o->unit))
printf("@item %s\n%s\n", u->name, u->help ? u->help : "");
}
printf("@end table\n");
}
}
static void show_opts(const AVOption *opts, int per_stream)
{
const AVOption *o;
printf("@table @option\n");
for (o = opts; o->name; o++) {
if (o->type != AV_OPT_TYPE_CONST)
print_option(opts, o, per_stream);
}
printf("@end table\n");
}
static void show_format_opts(void)
{
printf("@section Format AVOptions\n");
show_opts(avformat_options, 0);
}
static void show_codec_opts(void)
{
printf("@section Codec AVOptions\n");
show_opts(avcodec_options, 1);
}
int main(int argc, char **argv)
{
if (argc < 2)
print_usage();
printf("@c DO NOT EDIT THIS FILE!\n"
"@c It was generated by print_options.\n\n");
if (!strcmp(argv[1], "format"))
show_format_opts();
else if (!strcmp(argv[1], "codec"))
show_codec_opts();
else
print_usage();
return 0;
}

/contrib/sdk/sources/ffmpeg/doc/protocols.texi
0,0 → 1,1087
@chapter Protocols
@c man begin PROTOCOLS
Protocols are configured elements in FFmpeg that enable access to
resources that require specific protocols.
When you configure your FFmpeg build, all the supported protocols are
enabled by default. You can list all available ones using the
configure option "--list-protocols".
You can disable all the protocols using the configure option
"--disable-protocols", and selectively enable a protocol using the
option "--enable-protocol=@var{PROTOCOL}", or you can disable a
particular protocol using the option
"--disable-protocol=@var{PROTOCOL}".
The option "-protocols" of the ff* tools will display the list of
supported protocols.
A description of the currently available protocols follows.
@section bluray
Read BluRay playlist.
The accepted options are:
@table @option
@item angle
BluRay angle
@item chapter
Start chapter (1...N)
@item playlist
Playlist to read (BDMV/PLAYLIST/?????.mpls)
@end table
Examples:
Read longest playlist from BluRay mounted to /mnt/bluray:
@example
bluray:/mnt/bluray
@end example
Read angle 2 of playlist 4 from BluRay mounted to /mnt/bluray, start from chapter 2:
@example
-playlist 4 -angle 2 -chapter 2 bluray:/mnt/bluray
@end example
@section cache
Caching wrapper for input stream.
Cache the input stream to temporary file. It brings seeking capability to live streams.
@example
cache:@var{URL}
@end example
@section concat
Physical concatenation protocol.
Allow to read and seek from many resource in sequence as if they were
a unique resource.
A URL accepted by this protocol has the syntax:
@example
concat:@var{URL1}|@var{URL2}|...|@var{URLN}
@end example
where @var{URL1}, @var{URL2}, ..., @var{URLN} are the urls of the
resource to be concatenated, each one possibly specifying a distinct
protocol.
For example to read a sequence of files @file{split1.mpeg},
@file{split2.mpeg}, @file{split3.mpeg} with @command{ffplay} use the
command:
@example
ffplay concat:split1.mpeg\|split2.mpeg\|split3.mpeg
@end example
Note that you may need to escape the character "|" which is special for
many shells.
@section crypto
AES-encrypted stream reading protocol.
The accepted options are:
@table @option
@item key
Set the AES decryption key binary block from given hexadecimal representation.
@item iv
Set the AES decryption initialization vector binary block from given hexadecimal representation.
@end table
Accepted URL formats:
@example
crypto:@var{URL}
crypto+@var{URL}
@end example
@section data
Data in-line in the URI. See @url{http://en.wikipedia.org/wiki/Data_URI_scheme}.
For example, to convert a GIF file given inline with @command{ffmpeg}:
@example
ffmpeg -i "data:image/gif;base64,R0lGODdhCAAIAMIEAAAAAAAA//8AAP//AP///////////////ywAAAAACAAIAAADF0gEDLojDgdGiJdJqUX02iB4E8Q9jUMkADs=" smiley.png
@end example
@section file
File access protocol.
Allow to read from or read to a file.
For example to read from a file @file{input.mpeg} with @command{ffmpeg}
use the command:
@example
ffmpeg -i file:input.mpeg output.mpeg
@end example
The ff* tools default to the file protocol, that is a resource
specified with the name "FILE.mpeg" is interpreted as the URL
"file:FILE.mpeg".
This protocol accepts the following options:
@table @option
@item truncate
Truncate existing files on write, if set to 1. A value of 0 prevents
truncating. Default value is 1.
@item blocksize
Set I/O operation maximum block size, in bytes. Default value is
@code{INT_MAX}, which results in not limiting the requested block size.
Setting this value reasonably low improves user termination request reaction
time, which is valuable for files on slow medium.
@end table
@section ftp
FTP (File Transfer Protocol).
Allow to read from or write to remote resources using FTP protocol.
Following syntax is required.
@example
ftp://[user[:password]@@]server[:port]/path/to/remote/resource.mpeg
@end example
This protocol accepts the following options.
@table @option
@item timeout
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout is
not specified.
@item ftp-anonymous-password
Password used when login as anonymous user. Typically an e-mail address
should be used.
@item ftp-write-seekable
Control seekability of connection during encoding. If set to 1 the
resource is supposed to be seekable, if set to 0 it is assumed not
to be seekable. Default value is 0.
@end table
NOTE: Protocol can be used as output, but it is recommended to not do
it, unless special care is taken (tests, customized server configuration
etc.). Different FTP servers behave in different way during seek
operation. ff* tools may produce incomplete content due to server limitations.
@section gopher
Gopher protocol.
@section hls
Read Apple HTTP Live Streaming compliant segmented stream as
a uniform one. The M3U8 playlists describing the segments can be
remote HTTP resources or local files, accessed using the standard
file protocol.
The nested protocol is declared by specifying
"+@var{proto}" after the hls URI scheme name, where @var{proto}
is either "file" or "http".
@example
hls+http://host/path/to/remote/resource.m3u8
hls+file://path/to/local/resource.m3u8
@end example
Using this protocol is discouraged - the hls demuxer should work
just as well (if not, please report the issues) and is more complete.
To use the hls demuxer instead, simply use the direct URLs to the
m3u8 files.
@section http
HTTP (Hyper Text Transfer Protocol).
This protocol accepts the following options.
@table @option
@item seekable
Control seekability of connection. If set to 1 the resource is
supposed to be seekable, if set to 0 it is assumed not to be seekable,
if set to -1 it will try to autodetect if it is seekable. Default
value is -1.
@item chunked_post
If set to 1 use chunked transfer-encoding for posts, default is 1.
@item headers
Set custom HTTP headers, can override built in default headers. The
value must be a string encoding the headers.
@item content_type
Force a content type.
@item user-agent
Override User-Agent header. If not specified the protocol will use a
string describing the libavformat build.
@item multiple_requests
Use persistent connections if set to 1. By default it is 0.
@item post_data
Set custom HTTP post data.
@item timeout
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout is
not specified.
@item mime_type
Set MIME type.
@item icy
If set to 1 request ICY (SHOUTcast) metadata from the server. If the server
supports this, the metadata has to be retrieved by the application by reading
the @option{icy_metadata_headers} and @option{icy_metadata_packet} options.
The default is 0.
@item icy_metadata_headers
If the server supports ICY metadata, this contains the ICY specific HTTP reply
headers, separated with newline characters.
@item icy_metadata_packet
If the server supports ICY metadata, and @option{icy} was set to 1, this
contains the last non-empty metadata packet sent by the server.
@item cookies
Set the cookies to be sent in future requests. The format of each cookie is the
same as the value of a Set-Cookie HTTP response field. Multiple cookies can be
delimited by a newline character.
@end table
@subsection HTTP Cookies
Some HTTP requests will be denied unless cookie values are passed in with the
request. The @option{cookies} option allows these cookies to be specified. At
the very least, each cookie must specify a value along with a path and domain.
HTTP requests that match both the domain and path will automatically include the
cookie value in the HTTP Cookie header field. Multiple cookies can be delimited
by a newline.
The required syntax to play a stream specifying a cookie is:
@example
ffplay -cookies "nlqptid=nltid=tsn; path=/; domain=somedomain.com;" http://somedomain.com/somestream.m3u8
@end example
@section mmst
MMS (Microsoft Media Server) protocol over TCP.
@section mmsh
MMS (Microsoft Media Server) protocol over HTTP.
The required syntax is:
@example
mmsh://@var{server}[:@var{port}][/@var{app}][/@var{playpath}]
@end example
@section md5
MD5 output protocol.
Computes the MD5 hash of the data to be written, and on close writes
this to the designated output or stdout if none is specified. It can
be used to test muxers without writing an actual file.
Some examples follow.
@example
# Write the MD5 hash of the encoded AVI file to the file output.avi.md5.
ffmpeg -i input.flv -f avi -y md5:output.avi.md5
# Write the MD5 hash of the encoded AVI file to stdout.
ffmpeg -i input.flv -f avi -y md5:
@end example
Note that some formats (typically MOV) require the output protocol to
be seekable, so they will fail with the MD5 output protocol.
@section pipe
UNIX pipe access protocol.
Allow to read and write from UNIX pipes.
The accepted syntax is:
@example
pipe:[@var{number}]
@end example
@var{number} is the number corresponding to the file descriptor of the
pipe (e.g. 0 for stdin, 1 for stdout, 2 for stderr). If @var{number}
is not specified, by default the stdout file descriptor will be used
for writing, stdin for reading.
For example to read from stdin with @command{ffmpeg}:
@example
cat test.wav | ffmpeg -i pipe:0
# ...this is the same as...
cat test.wav | ffmpeg -i pipe:
@end example
For writing to stdout with @command{ffmpeg}:
@example
ffmpeg -i test.wav -f avi pipe:1 | cat > test.avi
# ...this is the same as...
ffmpeg -i test.wav -f avi pipe: | cat > test.avi
@end example
This protocol accepts the following options:
@table @option
@item blocksize
Set I/O operation maximum block size, in bytes. Default value is
@code{INT_MAX}, which results in not limiting the requested block size.
Setting this value reasonably low improves user termination request reaction
time, which is valuable if data transmission is slow.
@end table
Note that some formats (typically MOV), require the output protocol to
be seekable, so they will fail with the pipe output protocol.
@section rtmp
Real-Time Messaging Protocol.
The Real-Time Messaging Protocol (RTMP) is used for streaming multimedia
content across a TCP/IP network.
The required syntax is:
@example
rtmp://[@var{username}:@var{password}@@]@var{server}[:@var{port}][/@var{app}][/@var{instance}][/@var{playpath}]
@end example
The accepted parameters are:
@table @option
@item username
An optional username (mostly for publishing).
@item password
An optional password (mostly for publishing).
@item server
The address of the RTMP server.
@item port
The number of the TCP port to use (by default is 1935).
@item app
It is the name of the application to access. It usually corresponds to
the path where the application is installed on the RTMP server
(e.g. @file{/ondemand/}, @file{/flash/live/}, etc.). You can override
the value parsed from the URI through the @code{rtmp_app} option, too.
@item playpath
It is the path or name of the resource to play with reference to the
application specified in @var{app}, may be prefixed by "mp4:". You
can override the value parsed from the URI through the @code{rtmp_playpath}
option, too.
@item listen
Act as a server, listening for an incoming connection.
@item timeout
Maximum time to wait for the incoming connection. Implies listen.
@end table
Additionally, the following parameters can be set via command line options
(or in code via @code{AVOption}s):
@table @option
@item rtmp_app
Name of application to connect on the RTMP server. This option
overrides the parameter specified in the URI.
@item rtmp_buffer
Set the client buffer time in milliseconds. The default is 3000.
@item rtmp_conn
Extra arbitrary AMF connection parameters, parsed from a string,
e.g. like @code{B:1 S:authMe O:1 NN:code:1.23 NS:flag:ok O:0}.
Each value is prefixed by a single character denoting the type,
B for Boolean, N for number, S for string, O for object, or Z for null,
followed by a colon. For Booleans the data must be either 0 or 1 for
FALSE or TRUE, respectively. Likewise for Objects the data must be 0 or
1 to end or begin an object, respectively. Data items in subobjects may
be named, by prefixing the type with 'N' and specifying the name before
the value (i.e. @code{NB:myFlag:1}). This option may be used multiple
times to construct arbitrary AMF sequences.
@item rtmp_flashver
Version of the Flash plugin used to run the SWF player. The default
is LNX 9,0,124,2. (When publishing, the default is FMLE/3.0 (compatible;
<libavformat version>).)
@item rtmp_flush_interval
Number of packets flushed in the same request (RTMPT only). The default
is 10.
@item rtmp_live
Specify that the media is a live stream. No resuming or seeking in
live streams is possible. The default value is @code{any}, which means the
subscriber first tries to play the live stream specified in the
playpath. If a live stream of that name is not found, it plays the
recorded stream. The other possible values are @code{live} and
@code{recorded}.
@item rtmp_pageurl
URL of the web page in which the media was embedded. By default no
value will be sent.
@item rtmp_playpath
Stream identifier to play or to publish. This option overrides the
parameter specified in the URI.
@item rtmp_subscribe
Name of live stream to subscribe to. By default no value will be sent.
It is only sent if the option is specified or if rtmp_live
is set to live.
@item rtmp_swfhash
SHA256 hash of the decompressed SWF file (32 bytes).
@item rtmp_swfsize
Size of the decompressed SWF file, required for SWFVerification.
@item rtmp_swfurl
URL of the SWF player for the media. By default no value will be sent.
@item rtmp_swfverify
URL to player swf file, compute hash/size automatically.
@item rtmp_tcurl
URL of the target stream. Defaults to proto://host[:port]/app.
@end table
For example to read with @command{ffplay} a multimedia resource named
"sample" from the application "vod" from an RTMP server "myserver":
@example
ffplay rtmp://myserver/vod/sample
@end example
To publish to a password protected server, passing the playpath and
app names separately:
@example
ffmpeg -re -i <input> -f flv -rtmp_playpath some/long/path -rtmp_app long/app/name rtmp://username:password@@myserver/
@end example
@section rtmpe
Encrypted Real-Time Messaging Protocol.
The Encrypted Real-Time Messaging Protocol (RTMPE) is used for
streaming multimedia content within standard cryptographic primitives,
consisting of Diffie-Hellman key exchange and HMACSHA256, generating
a pair of RC4 keys.
@section rtmps
Real-Time Messaging Protocol over a secure SSL connection.
The Real-Time Messaging Protocol (RTMPS) is used for streaming
multimedia content across an encrypted connection.
@section rtmpt
Real-Time Messaging Protocol tunneled through HTTP.
The Real-Time Messaging Protocol tunneled through HTTP (RTMPT) is used
for streaming multimedia content within HTTP requests to traverse
firewalls.
@section rtmpte
Encrypted Real-Time Messaging Protocol tunneled through HTTP.
The Encrypted Real-Time Messaging Protocol tunneled through HTTP (RTMPTE)
is used for streaming multimedia content within HTTP requests to traverse
firewalls.
@section rtmpts
Real-Time Messaging Protocol tunneled through HTTPS.
The Real-Time Messaging Protocol tunneled through HTTPS (RTMPTS) is used
for streaming multimedia content within HTTPS requests to traverse
firewalls.
@section libssh
Secure File Transfer Protocol via libssh
Allow to read from or write to remote resources using SFTP protocol.
Following syntax is required.
@example
sftp://[user[:password]@@]server[:port]/path/to/remote/resource.mpeg
@end example
This protocol accepts the following options.
@table @option
@item timeout
Set timeout of socket I/O operations used by the underlying low level
operation. By default it is set to -1, which means that the timeout
is not specified.
@item truncate
Truncate existing files on write, if set to 1. A value of 0 prevents
truncating. Default value is 1.
@end table
Example: Play a file stored on remote server.
@example
ffplay sftp://user:password@@server_address:22/home/user/resource.mpeg
@end example
@section librtmp rtmp, rtmpe, rtmps, rtmpt, rtmpte
Real-Time Messaging Protocol and its variants supported through
librtmp.
Requires the presence of the librtmp headers and library during
configuration. You need to explicitly configure the build with
"--enable-librtmp". If enabled this will replace the native RTMP
protocol.
This protocol provides most client functions and a few server
functions needed to support RTMP, RTMP tunneled in HTTP (RTMPT),
encrypted RTMP (RTMPE), RTMP over SSL/TLS (RTMPS) and tunneled
variants of these encrypted types (RTMPTE, RTMPTS).
The required syntax is:
@example
@var{rtmp_proto}://@var{server}[:@var{port}][/@var{app}][/@var{playpath}] @var{options}
@end example
where @var{rtmp_proto} is one of the strings "rtmp", "rtmpt", "rtmpe",
"rtmps", "rtmpte", "rtmpts" corresponding to each RTMP variant, and
@var{server}, @var{port}, @var{app} and @var{playpath} have the same
meaning as specified for the RTMP native protocol.
@var{options} contains a list of space-separated options of the form
@var{key}=@var{val}.
See the librtmp manual page (man 3 librtmp) for more information.
For example, to stream a file in real-time to an RTMP server using
@command{ffmpeg}:
@example
ffmpeg -re -i myfile -f flv rtmp://myserver/live/mystream
@end example
To play the same stream using @command{ffplay}:
@example
ffplay "rtmp://myserver/live/mystream live=1"
@end example
@section rtp
Real-time Transport Protocol.
The required syntax for an RTP URL is:
rtp://@var{hostname}[:@var{port}][?@var{option}=@var{val}...]
@var{port} specifies the RTP port to use.
The following URL options are supported:
@table @option
@item ttl=@var{n}
Set the TTL (Time-To-Live) value (for multicast only).
@item rtcpport=@var{n}
Set the remote RTCP port to @var{n}.
@item localrtpport=@var{n}
Set the local RTP port to @var{n}.
@item localrtcpport=@var{n}'
Set the local RTCP port to @var{n}.
@item pkt_size=@var{n}
Set max packet size (in bytes) to @var{n}.
@item connect=0|1
Do a @code{connect()} on the UDP socket (if set to 1) or not (if set
to 0).
@item sources=@var{ip}[,@var{ip}]
List allowed source IP addresses.
@item block=@var{ip}[,@var{ip}]
List disallowed (blocked) source IP addresses.
@item write_to_source=0|1
Send packets to the source address of the latest received packet (if
set to 1) or to a default remote address (if set to 0).
@item localport=@var{n}
Set the local RTP port to @var{n}.
This is a deprecated option. Instead, @option{localrtpport} should be
used.
@end table
Important notes:
@enumerate
@item
If @option{rtcpport} is not set the RTCP port will be set to the RTP
port value plus 1.
@item
If @option{localrtpport} (the local RTP port) is not set any available
port will be used for the local RTP and RTCP ports.
@item
If @option{localrtcpport} (the local RTCP port) is not set it will be
set to the the local RTP port value plus 1.
@end enumerate
@section rtsp
RTSP is not technically a protocol handler in libavformat, it is a demuxer
and muxer. The demuxer supports both normal RTSP (with data transferred
over RTP; this is used by e.g. Apple and Microsoft) and Real-RTSP (with
data transferred over RDT).
The muxer can be used to send a stream using RTSP ANNOUNCE to a server
supporting it (currently Darwin Streaming Server and Mischa Spiegelmock's
@uref{http://github.com/revmischa/rtsp-server, RTSP server}).
The required syntax for a RTSP url is:
@example
rtsp://@var{hostname}[:@var{port}]/@var{path}
@end example
The following options (set on the @command{ffmpeg}/@command{ffplay} command
line, or set in code via @code{AVOption}s or in @code{avformat_open_input}),
are supported:
Flags for @code{rtsp_transport}:
@table @option
@item udp
Use UDP as lower transport protocol.
@item tcp
Use TCP (interleaving within the RTSP control channel) as lower
transport protocol.
@item udp_multicast
Use UDP multicast as lower transport protocol.
@item http
Use HTTP tunneling as lower transport protocol, which is useful for
passing proxies.
@end table
Multiple lower transport protocols may be specified, in that case they are
tried one at a time (if the setup of one fails, the next one is tried).
For the muxer, only the @code{tcp} and @code{udp} options are supported.
Flags for @code{rtsp_flags}:
@table @option
@item filter_src
Accept packets only from negotiated peer address and port.
@item listen
Act as a server, listening for an incoming connection.
@end table
When receiving data over UDP, the demuxer tries to reorder received packets
(since they may arrive out of order, or packets may get lost totally). This
can be disabled by setting the maximum demuxing delay to zero (via
the @code{max_delay} field of AVFormatContext).
When watching multi-bitrate Real-RTSP streams with @command{ffplay}, the
streams to display can be chosen with @code{-vst} @var{n} and
@code{-ast} @var{n} for video and audio respectively, and can be switched
on the fly by pressing @code{v} and @code{a}.
Example command lines:
To watch a stream over UDP, with a max reordering delay of 0.5 seconds:
@example
ffplay -max_delay 500000 -rtsp_transport udp rtsp://server/video.mp4
@end example
To watch a stream tunneled over HTTP:
@example
ffplay -rtsp_transport http rtsp://server/video.mp4
@end example
To send a stream in realtime to a RTSP server, for others to watch:
@example
ffmpeg -re -i @var{input} -f rtsp -muxdelay 0.1 rtsp://server/live.sdp
@end example
To receive a stream in realtime:
@example
ffmpeg -rtsp_flags listen -i rtsp://ownaddress/live.sdp @var{output}
@end example
@table @option
@item stimeout
Socket IO timeout in micro seconds.
@end table
@section sap
Session Announcement Protocol (RFC 2974). This is not technically a
protocol handler in libavformat, it is a muxer and demuxer.
It is used for signalling of RTP streams, by announcing the SDP for the
streams regularly on a separate port.
@subsection Muxer
The syntax for a SAP url given to the muxer is:
@example
sap://@var{destination}[:@var{port}][?@var{options}]
@end example
The RTP packets are sent to @var{destination} on port @var{port},
or to port 5004 if no port is specified.
@var{options} is a @code{&}-separated list. The following options
are supported:
@table @option
@item announce_addr=@var{address}
Specify the destination IP address for sending the announcements to.
If omitted, the announcements are sent to the commonly used SAP
announcement multicast address 224.2.127.254 (sap.mcast.net), or
ff0e::2:7ffe if @var{destination} is an IPv6 address.
@item announce_port=@var{port}
Specify the port to send the announcements on, defaults to
9875 if not specified.
@item ttl=@var{ttl}
Specify the time to live value for the announcements and RTP packets,
defaults to 255.
@item same_port=@var{0|1}
If set to 1, send all RTP streams on the same port pair. If zero (the
default), all streams are sent on unique ports, with each stream on a
port 2 numbers higher than the previous.
VLC/Live555 requires this to be set to 1, to be able to receive the stream.
The RTP stack in libavformat for receiving requires all streams to be sent
on unique ports.
@end table
Example command lines follow.
To broadcast a stream on the local subnet, for watching in VLC:
@example
ffmpeg -re -i @var{input} -f sap sap://224.0.0.255?same_port=1
@end example
Similarly, for watching in @command{ffplay}:
@example
ffmpeg -re -i @var{input} -f sap sap://224.0.0.255
@end example
And for watching in @command{ffplay}, over IPv6:
@example
ffmpeg -re -i @var{input} -f sap sap://[ff0e::1:2:3:4]
@end example
@subsection Demuxer
The syntax for a SAP url given to the demuxer is:
@example
sap://[@var{address}][:@var{port}]
@end example
@var{address} is the multicast address to listen for announcements on,
if omitted, the default 224.2.127.254 (sap.mcast.net) is used. @var{port}
is the port that is listened on, 9875 if omitted.
The demuxers listens for announcements on the given address and port.
Once an announcement is received, it tries to receive that particular stream.
Example command lines follow.
To play back the first stream announced on the normal SAP multicast address:
@example
ffplay sap://
@end example
To play back the first stream announced on one the default IPv6 SAP multicast address:
@example
ffplay sap://[ff0e::2:7ffe]
@end example
@section sctp
Stream Control Transmission Protocol.
The accepted URL syntax is:
@example
sctp://@var{host}:@var{port}[?@var{options}]
@end example
The protocol accepts the following options:
@table @option
@item listen
If set to any value, listen for an incoming connection. Outgoing connection is done by default.
@item max_streams
Set the maximum number of streams. By default no limit is set.
@end table
@section srtp
Secure Real-time Transport Protocol.
The accepted options are:
@table @option
@item srtp_in_suite
@item srtp_out_suite
Select input and output encoding suites.
Supported values:
@table @samp
@item AES_CM_128_HMAC_SHA1_80
@item SRTP_AES128_CM_HMAC_SHA1_80
@item AES_CM_128_HMAC_SHA1_32
@item SRTP_AES128_CM_HMAC_SHA1_32
@end table
@item srtp_in_params
@item srtp_out_params
Set input and output encoding parameters, which are expressed by a
base64-encoded representation of a binary block. The first 16 bytes of
this binary block are used as master key, the following 14 bytes are
used as master salt.
@end table
@section tcp
Trasmission Control Protocol.
The required syntax for a TCP url is:
@example
tcp://@var{hostname}:@var{port}[?@var{options}]
@end example
@table @option
@item listen
Listen for an incoming connection
@item timeout=@var{microseconds}
In read mode: if no data arrived in more than this time interval, raise error.
In write mode: if socket cannot be written in more than this time interval, raise error.
This also sets timeout on TCP connection establishing.
@example
ffmpeg -i @var{input} -f @var{format} tcp://@var{hostname}:@var{port}?listen
ffplay tcp://@var{hostname}:@var{port}
@end example
@end table
@section tls
Transport Layer Security (TLS) / Secure Sockets Layer (SSL)
The required syntax for a TLS/SSL url is:
@example
tls://@var{hostname}:@var{port}[?@var{options}]
@end example
The following parameters can be set via command line options
(or in code via @code{AVOption}s):
@table @option
@item ca_file, cafile=@var{filename}
A file containing certificate authority (CA) root certificates to treat
as trusted. If the linked TLS library contains a default this might not
need to be specified for verification to work, but not all libraries and
setups have defaults built in.
The file must be in OpenSSL PEM format.
@item tls_verify=@var{1|0}
If enabled, try to verify the peer that we are communicating with.
Note, if using OpenSSL, this currently only makes sure that the
peer certificate is signed by one of the root certificates in the CA
database, but it does not validate that the certificate actually
matches the host name we are trying to connect to. (With GnuTLS,
the host name is validated as well.)
This is disabled by default since it requires a CA database to be
provided by the caller in many cases.
@item cert_file, cert=@var{filename}
A file containing a certificate to use in the handshake with the peer.
(When operating as server, in listen mode, this is more often required
by the peer, while client certificates only are mandated in certain
setups.)
@item key_file, key=@var{filename}
A file containing the private key for the certificate.
@item listen=@var{1|0}
If enabled, listen for connections on the provided port, and assume
the server role in the handshake instead of the client role.
@end table
Example command lines:
To create a TLS/SSL server that serves an input stream.
@example
ffmpeg -i @var{input} -f @var{format} tls://@var{hostname}:@var{port}?listen&cert=@var{server.crt}&key=@var{server.key}
@end example
To play back a stream from the TLS/SSL server using @command{ffplay}:
@example
ffplay tls://@var{hostname}:@var{port}
@end example
@section udp
User Datagram Protocol.
The required syntax for a UDP url is:
@example
udp://@var{hostname}:@var{port}[?@var{options}]
@end example
@var{options} contains a list of &-separated options of the form @var{key}=@var{val}.
In case threading is enabled on the system, a circular buffer is used
to store the incoming data, which allows to reduce loss of data due to
UDP socket buffer overruns. The @var{fifo_size} and
@var{overrun_nonfatal} options are related to this buffer.
The list of supported options follows.
@table @option
@item buffer_size=@var{size}
Set the UDP socket buffer size in bytes. This is used both for the
receiving and the sending buffer size.
@item localport=@var{port}
Override the local UDP port to bind with.
@item localaddr=@var{addr}
Choose the local IP address. This is useful e.g. if sending multicast
and the host has multiple interfaces, where the user can choose
which interface to send on by specifying the IP address of that interface.
@item pkt_size=@var{size}
Set the size in bytes of UDP packets.
@item reuse=@var{1|0}
Explicitly allow or disallow reusing UDP sockets.
@item ttl=@var{ttl}
Set the time to live value (for multicast only).
@item connect=@var{1|0}
Initialize the UDP socket with @code{connect()}. In this case, the
destination address can't be changed with ff_udp_set_remote_url later.
If the destination address isn't known at the start, this option can
be specified in ff_udp_set_remote_url, too.
This allows finding out the source address for the packets with getsockname,
and makes writes return with AVERROR(ECONNREFUSED) if "destination
unreachable" is received.
For receiving, this gives the benefit of only receiving packets from
the specified peer address/port.
@item sources=@var{address}[,@var{address}]
Only receive packets sent to the multicast group from one of the
specified sender IP addresses.
@item block=@var{address}[,@var{address}]
Ignore packets sent to the multicast group from the specified
sender IP addresses.
@item fifo_size=@var{units}
Set the UDP receiving circular buffer size, expressed as a number of
packets with size of 188 bytes. If not specified defaults to 7*4096.
@item overrun_nonfatal=@var{1|0}
Survive in case of UDP receiving circular buffer overrun. Default
value is 0.
@item timeout=@var{microseconds}
In read mode: if no data arrived in more than this time interval, raise error.
@end table
Some usage examples of the UDP protocol with @command{ffmpeg} follow.
To stream over UDP to a remote endpoint:
@example
ffmpeg -i @var{input} -f @var{format} udp://@var{hostname}:@var{port}
@end example
To stream in mpegts format over UDP using 188 sized UDP packets, using a large input buffer:
@example
ffmpeg -i @var{input} -f mpegts udp://@var{hostname}:@var{port}?pkt_size=188&buffer_size=65535
@end example
To receive over UDP from a remote endpoint:
@example
ffmpeg -i udp://[@var{multicast-address}]:@var{port}
@end example
@section unix
Unix local socket
The required syntax for a Unix socket URL is:
@example
unix://@var{filepath}
@end example
The following parameters can be set via command line options
(or in code via @code{AVOption}s):
@table @option
@item timeout
Timeout in ms.
@item listen
Create the Unix socket in listening mode.
@end table
@c man end PROTOCOLS

/contrib/sdk/sources/ffmpeg/doc/rate_distortion.txt
0,0 → 1,61
A Quick Description Of Rate Distortion Theory.
We want to encode a video, picture or piece of music optimally. What does
"optimally" really mean? It means that we want to get the best quality at a
given filesize OR we want to get the smallest filesize at a given quality
(in practice, these 2 goals are usually the same).
Solving this directly is not practical; trying all byte sequences 1
megabyte in length and selecting the "best looking" sequence will yield
256^1000000 cases to try.
But first, a word about quality, which is also called distortion.
Distortion can be quantified by almost any quality measurement one chooses.
Commonly, the sum of squared differences is used but more complex methods
that consider psychovisual effects can be used as well. It makes no
difference in this discussion.
First step: that rate distortion factor called lambda...
Let's consider the problem of minimizing:
distortion + lambda*rate
rate is the filesize
distortion is the quality
lambda is a fixed value chosen as a tradeoff between quality and filesize
Is this equivalent to finding the best quality for a given max
filesize? The answer is yes. For each filesize limit there is some lambda
factor for which minimizing above will get you the best quality (using your
chosen quality measurement) at the desired (or lower) filesize.
Second step: splitting the problem.
Directly splitting the problem of finding the best quality at a given
filesize is hard because we do not know how many bits from the total
filesize should be allocated to each of the subproblems. But the formula
from above:
distortion + lambda*rate
can be trivially split. Consider:
(distortion0 + distortion1) + lambda*(rate0 + rate1)
This creates a problem made of 2 independent subproblems. The subproblems
might be 2 16x16 macroblocks in a frame of 32x16 size. To minimize:
(distortion0 + distortion1) + lambda*(rate0 + rate1)
we just have to minimize:
distortion0 + lambda*rate0
and
distortion1 + lambda*rate1
I.e, the 2 problems can be solved independently.
Author: Michael Niedermayer
Copyright: LGPL

/contrib/sdk/sources/ffmpeg/doc/resampler.texi
0,0 → 1,232
@chapter Resampler Options
@c man begin RESAMPLER OPTIONS
The audio resampler supports the following named options.
Options may be set by specifying -@var{option} @var{value} in the
FFmpeg tools, @var{option}=@var{value} for the aresample filter,
by setting the value explicitly in the
@code{SwrContext} options or using the @file{libavutil/opt.h} API for
programmatic use.
@table @option
@item ich, in_channel_count
Set the number of input channels. Default value is 0. Setting this
value is not mandatory if the corresponding channel layout
@option{in_channel_layout} is set.
@item och, out_channel_count
Set the number of output channels. Default value is 0. Setting this
value is not mandatory if the corresponding channel layout
@option{out_channel_layout} is set.
@item uch, used_channel_count
Set the number of used input channels. Default value is 0. This option is
only used for special remapping.
@item isr, in_sample_rate
Set the input sample rate. Default value is 0.
@item osr, out_sample_rate
Set the output sample rate. Default value is 0.
@item isf, in_sample_fmt
Specify the input sample format. It is set by default to @code{none}.
@item osf, out_sample_fmt
Specify the output sample format. It is set by default to @code{none}.
@item tsf, internal_sample_fmt
Set the internal sample format. Default value is @code{none}.
This will automatically be chosen when it is not explicitly set.
@item icl, in_channel_layout
@item ocl, out_channel_layout
Set the input/output channel layout.
See @ref{channel layout syntax,,the Channel Layout section in the ffmpeg-utils(1) manual,ffmpeg-utils}
for the required syntax.
@item clev, center_mix_level
Set the center mix level. It is a value expressed in deciBel, and must be
in the interval [-32,32].
@item slev, surround_mix_level
Set the surround mix level. It is a value expressed in deciBel, and must
be in the interval [-32,32].
@item lfe_mix_level
Set LFE mix into non LFE level. It is used when there is a LFE input but no
LFE output. It is a value expressed in deciBel, and must
be in the interval [-32,32].
@item rmvol, rematrix_volume
Set rematrix volume. Default value is 1.0.
@item rematrix_maxval
Set maximum output value for rematrixing.
This can be used to prevent clipping vs. preventing volumn reduction
A value of 1.0 prevents cliping.
@item flags, swr_flags
Set flags used by the converter. Default value is 0.
It supports the following individual flags:
@table @option
@item res
force resampling, this flag forces resampling to be used even when the
input and output sample rates match.
@end table
@item dither_scale
Set the dither scale. Default value is 1.
@item dither_method
Set dither method. Default value is 0.
Supported values:
@table @samp
@item rectangular
select rectangular dither
@item triangular
select triangular dither
@item triangular_hp
select triangular dither with high pass
@item lipshitz
select lipshitz noise shaping dither
@item shibata
select shibata noise shaping dither
@item low_shibata
select low shibata noise shaping dither
@item high_shibata
select high shibata noise shaping dither
@item f_weighted
select f-weighted noise shaping dither
@item modified_e_weighted
select modified-e-weighted noise shaping dither
@item improved_e_weighted
select improved-e-weighted noise shaping dither
@end table
@item resampler
Set resampling engine. Default value is swr.
Supported values:
@table @samp
@item swr
select the native SW Resampler; filter options precision and cheby are not
applicable in this case.
@item soxr
select the SoX Resampler (where available); compensation, and filter options
filter_size, phase_shift, filter_type & kaiser_beta, are not applicable in this
case.
@end table
@item filter_size
For swr only, set resampling filter size, default value is 32.
@item phase_shift
For swr only, set resampling phase shift, default value is 10, and must be in
the interval [0,30].
@item linear_interp
Use Linear Interpolation if set to 1, default value is 0.
@item cutoff
Set cutoff frequency (swr: 6dB point; soxr: 0dB point) ratio; must be a float
value between 0 and 1. Default value is 0.97 with swr, and 0.91 with soxr
(which, with a sample-rate of 44100, preserves the entire audio band to 20kHz).
@item precision
For soxr only, the precision in bits to which the resampled signal will be
calculated. The default value of 20 (which, with suitable dithering, is
appropriate for a destination bit-depth of 16) gives SoX's 'High Quality'; a
value of 28 gives SoX's 'Very High Quality'.
@item cheby
For soxr only, selects passband rolloff none (Chebyshev) & higher-precision
approximation for 'irrational' ratios. Default value is 0.
@item async
For swr only, simple 1 parameter audio sync to timestamps using stretching,
squeezing, filling and trimming. Setting this to 1 will enable filling and
trimming, larger values represent the maximum amount in samples that the data
may be stretched or squeezed for each second.
Default value is 0, thus no compensation is applied to make the samples match
the audio timestamps.
@item first_pts
For swr only, assume the first pts should be this value. The time unit is 1 / sample rate.
This allows for padding/trimming at the start of stream. By default, no
assumption is made about the first frame's expected pts, so no padding or
trimming is done. For example, this could be set to 0 to pad the beginning with
silence if an audio stream starts after the video stream or to trim any samples
with a negative pts due to encoder delay.
@item min_comp
For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger stretching/squeezing/filling or trimming of the
data to make it match the timestamps. The default is that
stretching/squeezing/filling and trimming is disabled
(@option{min_comp} = @code{FLT_MAX}).
@item min_hard_comp
For swr only, set the minimum difference between timestamps and audio data (in
seconds) to trigger adding/dropping samples to make it match the
timestamps. This option effectively is a threshold to select between
hard (trim/fill) and soft (squeeze/stretch) compensation. Note that
all compensation is by default disabled through @option{min_comp}.
The default is 0.1.
@item comp_duration
For swr only, set duration (in seconds) over which data is stretched/squeezed
to make it match the timestamps. Must be a non-negative double float value,
default value is 1.0.
@item max_soft_comp
For swr only, set maximum factor by which data is stretched/squeezed to make it
match the timestamps. Must be a non-negative double float value, default value
is 0.
@item matrix_encoding
Select matrixed stereo encoding.
It accepts the following values:
@table @samp
@item none
select none
@item dolby
select Dolby
@item dplii
select Dolby Pro Logic II
@end table
Default value is @code{none}.
@item filter_type
For swr only, select resampling filter type. This only affects resampling
operations.
It accepts the following values:
@table @samp
@item cubic
select cubic
@item blackman_nuttall
select Blackman Nuttall Windowed Sinc
@item kaiser
select Kaiser Windowed Sinc
@end table
@item kaiser_beta
For swr only, set Kaiser Window Beta value. Must be an integer in the
interval [2,16], default value is 9.
@item output_sample_bits
For swr only, set number of used output sample bits for dithering. Must be an integer in the
interval [0,64], default value is 0, which means it's not used.
@end table
@c man end RESAMPLER OPTIONS

/contrib/sdk/sources/ffmpeg/doc/scaler.texi
0,0 → 1,119
@anchor{scaler_options}
@chapter Scaler Options
@c man begin SCALER OPTIONS
The video scaler supports the following named options.
Options may be set by specifying -@var{option} @var{value} in the
FFmpeg tools. For programmatic use, they can be set explicitly in the
@code{SwsContext} options or through the @file{libavutil/opt.h} API.
@table @option
@anchor{sws_flags}
@item sws_flags
Set the scaler flags. This is also used to set the scaling
algorithm. Only a single algorithm should be selected.
It accepts the following values:
@table @samp
@item fast_bilinear
Select fast bilinear scaling algorithm.
@item bilinear
Select bilinear scaling algorithm.
@item bicubic
Select bicubic scaling algorithm.
@item experimental
Select experimental scaling algorithm.
@item neighbor
Select nearest neighbor rescaling algorithm.
@item area
Select averaging area rescaling algorithm.
@item bicubiclin
Select bicubic scaling algorithm for the luma component, bilinear for
chroma components.
@item gauss
Select Gaussian rescaling algorithm.
@item sinc
Select sinc rescaling algorithm.
@item lanczos
Select lanczos rescaling algorithm.
@item spline
Select natural bicubic spline rescaling algorithm.
@item print_info
Enable printing/debug logging.
@item accurate_rnd
Enable accurate rounding.
@item full_chroma_int
Enable full chroma interpolation.
@item full_chroma_inp
Select full chroma input.
@item bitexact
Enable bitexact output.
@end table
@item srcw
Set source width.
@item srch
Set source height.
@item dstw
Set destination width.
@item dsth
Set destination height.
@item src_format
Set source pixel format (must be expressed as an integer).
@item dst_format
Set destination pixel format (must be expressed as an integer).
@item src_range
Select source range.
@item dst_range
Select destination range.
@item param0, param1
Set scaling algorithm parameters. The specified values are specific of
some scaling algorithms and ignored by others. The specified values
are floating point number values.
@item sws_dither
Set the dithering algorithm. Accepts one of the following
values. Default value is @samp{auto}.
@table @samp
@item auto
automatic choice
@item none
no dithering
@item bayer
bayer dither
@item ed
error diffusion dither
@end table
@end table
@c man end SCALER OPTIONS

/contrib/sdk/sources/ffmpeg/doc/snow.txt
0,0 → 1,638
=============================================
Snow Video Codec Specification Draft 20080110
=============================================
Introduction:
=============
This specification describes the Snow bitstream syntax and semantics as
well as the formal Snow decoding process.
The decoding process is described precisely and any compliant decoder
MUST produce the exact same output for a spec-conformant Snow stream.
For encoding, though, any process which generates a stream compliant to
the syntactical and semantic requirements and which is decodable by
the process described in this spec shall be considered a conformant
Snow encoder.
Definitions:
============
MUST the specific part must be done to conform to this standard
SHOULD it is recommended to be done that way, but not strictly required
ilog2(x) is the rounded down logarithm of x with basis 2
ilog2(0) = 0
Type definitions:
=================
b 1-bit range coded
u unsigned scalar value range coded
s signed scalar value range coded
Bitstream syntax:
=================
frame:
header
prediction
residual
header:
keyframe b MID_STATE
if(keyframe || always_reset)
reset_contexts
if(keyframe){
version u header_state
always_reset b header_state
temporal_decomposition_type u header_state
temporal_decomposition_count u header_state
spatial_decomposition_count u header_state
colorspace_type u header_state
if (nb_planes > 2) {
chroma_h_shift u header_state
chroma_v_shift u header_state
}
spatial_scalability b header_state
max_ref_frames-1 u header_state
qlogs
}
if(!keyframe){
update_mc b header_state
if(update_mc){
for(plane=0; plane<nb_plane_types; plane++){
diag_mc b header_state
htaps/2-1 u header_state
for(i= p->htaps/2; i; i--)
|hcoeff[i]| u header_state
}
}
update_qlogs b header_state
if(update_qlogs){
spatial_decomposition_count u header_state
qlogs
}
}
spatial_decomposition_type s header_state
qlog s header_state
mv_scale s header_state
qbias s header_state
block_max_depth s header_state
qlogs:
for(plane=0; plane<nb_plane_types; plane++){
quant_table[plane][0][0] s header_state
for(level=0; level < spatial_decomposition_count; level++){
quant_table[plane][level][1]s header_state
quant_table[plane][level][3]s header_state
}
}
reset_contexts
*_state[*]= MID_STATE
prediction:
for(y=0; y<block_count_vertical; y++)
for(x=0; x<block_count_horizontal; x++)
block(0)
block(level):
mvx_diff=mvy_diff=y_diff=cb_diff=cr_diff=0
if(keyframe){
intra=1
}else{
if(level!=max_block_depth){
s_context= 2*left->level + 2*top->level + topleft->level + topright->level
leaf b block_state[4 + s_context]
}
if(level==max_block_depth || leaf){
intra b block_state[1 + left->intra + top->intra]
if(intra){
y_diff s block_state[32]
cb_diff s block_state[64]
cr_diff s block_state[96]
}else{
ref_context= ilog2(2*left->ref) + ilog2(2*top->ref)
if(ref_frames > 1)
ref u block_state[128 + 1024 + 32*ref_context]
mx_context= ilog2(2*abs(left->mx - top->mx))
my_context= ilog2(2*abs(left->my - top->my))
mvx_diff s block_state[128 + 32*(mx_context + 16*!!ref)]
mvy_diff s block_state[128 + 32*(my_context + 16*!!ref)]
}
}else{
block(level+1)
block(level+1)
block(level+1)
block(level+1)
}
}
residual:
residual2(luma)
if (nb_planes > 2) {
residual2(chroma_cr)
residual2(chroma_cb)
}
residual2:
for(level=0; level<spatial_decomposition_count; level++){
if(level==0)
subband(LL, 0)
subband(HL, level)
subband(LH, level)
subband(HH, level)
}
subband:
FIXME
nb_plane_types = gray ? 1 : 2;
Tag description:
----------------
version
0
this MUST NOT change within a bitstream
always_reset
if 1 then the range coder contexts will be reset after each frame
temporal_decomposition_type
0
temporal_decomposition_count
0
spatial_decomposition_count
FIXME
colorspace_type
0 unspecified YcbCr
1 Gray
2 Gray + Alpha
3 GBR
4 GBRA
this MUST NOT change within a bitstream
chroma_h_shift
log2(luma.width / chroma.width)
this MUST NOT change within a bitstream
chroma_v_shift
log2(luma.height / chroma.height)
this MUST NOT change within a bitstream
spatial_scalability
0
max_ref_frames
maximum number of reference frames
this MUST NOT change within a bitstream
update_mc
indicates that motion compensation filter parameters are stored in the
header
diag_mc
flag to enable faster diagonal interpolation
this SHOULD be 1 unless it turns out to be covered by a valid patent
htaps
number of half pel interpolation filter taps, MUST be even, >0 and <10
hcoeff
half pel interpolation filter coefficients, hcoeff[0] are the 2 middle
coefficients [1] are the next outer ones and so on, resulting in a filter
like: ...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2] ...
the sign of the coefficients is not explicitly stored but alternates
after each coeff and coeff[0] is positive, so ...,+,-,+,-,+,+,-,+,-,+,...
hcoeff[0] is not explicitly stored but found by subtracting the sum
of all stored coefficients with signs from 32
hcoeff[0]= 32 - hcoeff[1] - hcoeff[2] - ...
a good choice for hcoeff and htaps is
htaps= 6
hcoeff={40,-10,2}
an alternative which requires more computations at both encoder and
decoder side and may or may not be better is
htaps= 8
hcoeff={42,-14,6,-2}
ref_frames
minimum of the number of available reference frames and max_ref_frames
for example the first frame after a key frame always has ref_frames=1
spatial_decomposition_type
wavelet type
0 is a 9/7 symmetric compact integer wavelet
1 is a 5/3 symmetric compact integer wavelet
others are reserved
stored as delta from last, last is reset to 0 if always_reset || keyframe
qlog
quality (logarthmic quantizer scale)
stored as delta from last, last is reset to 0 if always_reset || keyframe
mv_scale
stored as delta from last, last is reset to 0 if always_reset || keyframe
FIXME check that everything works fine if this changes between frames
qbias
dequantization bias
stored as delta from last, last is reset to 0 if always_reset || keyframe
block_max_depth
maximum depth of the block tree
stored as delta from last, last is reset to 0 if always_reset || keyframe
quant_table
quantiztation table
Highlevel bitstream structure:
=============================
--------------------------------------------
| Header |
--------------------------------------------
| ------------------------------------ |
| | Block0 | |
| | split? | |
| | yes no | |
| | ......... intra? | |
| | : Block01 : yes no | |
| | : Block02 : ....... .......... | |
| | : Block03 : : y DC : : ref index: | |
| | : Block04 : : cb DC : : motion x : | |
| | ......... : cr DC : : motion y : | |
| | ....... .......... | |
| ------------------------------------ |
| ------------------------------------ |
| | Block1 | |
| ... |
--------------------------------------------
| ------------ ------------ ------------ |
|| Y subbands | | Cb subbands| | Cr subbands||
|| --- --- | | --- --- | | --- --- ||
|| |LL0||HL0| | | |LL0||HL0| | | |LL0||HL0| ||
|| --- --- | | --- --- | | --- --- ||
|| --- --- | | --- --- | | --- --- ||
|| |LH0||HH0| | | |LH0||HH0| | | |LH0||HH0| ||
|| --- --- | | --- --- | | --- --- ||
|| --- --- | | --- --- | | --- --- ||
|| |HL1||LH1| | | |HL1||LH1| | | |HL1||LH1| ||
|| --- --- | | --- --- | | --- --- ||
|| --- --- | | --- --- | | --- --- ||
|| |HH1||HL2| | | |HH1||HL2| | | |HH1||HL2| ||
|| ... | | ... | | ... ||
| ------------ ------------ ------------ |
--------------------------------------------
Decoding process:
=================
------------
| |
| Subbands |
------------ | |
| | ------------
| Intra DC | |
| | LL0 subband prediction
------------ |
\ Dequantizaton
------------------- \ |
| Reference frames | \ IDWT
| ------- ------- | Motion \ |
||Frame 0| |Frame 1|| Compensation . OBMC v -------
| ------- ------- | --------------. \------> + --->|Frame n|-->output
| ------- ------- | -------
||Frame 2| |Frame 3||<----------------------------------/
| ... |
-------------------
Range Coder:
============
Binary Range Coder:
-------------------
The implemented range coder is an adapted version based upon "Range encoding:
an algorithm for removing redundancy from a digitised message." by G. N. N.
Martin.
The symbols encoded by the Snow range coder are bits (0|1). The
associated probabilities are not fix but change depending on the symbol mix
seen so far.
bit seen | new state
---------+-----------------------------------------------
0 | 256 - state_transition_table[256 - old_state];
1 | state_transition_table[ old_state];
state_transition_table = {
0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57,
58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,
74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88,
89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103,
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118,
119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133,
134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164,
165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179,
180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194,
195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209,
210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225,
226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240,
241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};
FIXME
Range Coding of integers:
-------------------------
FIXME
Neighboring Blocks:
===================
left and top are set to the respective blocks unless they are outside of
the image in which case they are set to the Null block
top-left is set to the top left block unless it is outside of the image in
which case it is set to the left block
if this block has no larger parent block or it is at the left side of its
parent block and the top right block is not outside of the image then the
top right block is used for top-right else the top-left block is used
Null block
y,cb,cr are 128
level, ref, mx and my are 0
Motion Vector Prediction:
=========================
1. the motion vectors of all the neighboring blocks are scaled to
compensate for the difference of reference frames
scaled_mv= (mv * (256 * (current_reference+1) / (mv.reference+1)) + 128)>>8
2. the median of the scaled left, top and top-right vectors is used as
motion vector prediction
3. the used motion vector is the sum of the predictor and
(mvx_diff, mvy_diff)*mv_scale
Intra DC Predicton:
======================
the luma and chroma values of the left block are used as predictors
the used luma and chroma is the sum of the predictor and y_diff, cb_diff, cr_diff
to reverse this in the decoder apply the following:
block[y][x].dc[0] = block[y][x-1].dc[0] + y_diff;
block[y][x].dc[1] = block[y][x-1].dc[1] + cb_diff;
block[y][x].dc[2] = block[y][x-1].dc[2] + cr_diff;
block[*][-1].dc[*]= 128;
Motion Compensation:
====================
Halfpel interpolation:
----------------------
halfpel interpolation is done by convolution with the halfpel filter stored
in the header:
horizontal halfpel samples are found by
H1[y][x] = hcoeff[0]*(F[y][x ] + F[y][x+1])
+ hcoeff[1]*(F[y][x-1] + F[y][x+2])
+ hcoeff[2]*(F[y][x-2] + F[y][x+3])
+ ...
h1[y][x] = (H1[y][x] + 32)>>6;
vertical halfpel samples are found by
H2[y][x] = hcoeff[0]*(F[y ][x] + F[y+1][x])
+ hcoeff[1]*(F[y-1][x] + F[y+2][x])
+ ...
h2[y][x] = (H2[y][x] + 32)>>6;
vertical+horizontal halfpel samples are found by
H3[y][x] = hcoeff[0]*(H2[y][x ] + H2[y][x+1])
+ hcoeff[1]*(H2[y][x-1] + H2[y][x+2])
+ ...
H3[y][x] = hcoeff[0]*(H1[y ][x] + H1[y+1][x])
+ hcoeff[1]*(H1[y+1][x] + H1[y+2][x])
+ ...
h3[y][x] = (H3[y][x] + 2048)>>12;
F H1 F
| | |
| | |
| | |
F H1 F
| | |
| | |
| | |
F-------F-------F-> H1<-F-------F-------F
v v v
H2 H3 H2
^ ^ ^
F-------F-------F-> H1<-F-------F-------F
| | |
| | |
| | |
F H1 F
| | |
| | |
| | |
F H1 F
unavailable fullpel samples (outside the picture for example) shall be equal
to the closest available fullpel sample
Smaller pel interpolation:
--------------------------
if diag_mc is set then points which lie on a line between 2 vertically,
horiziontally or diagonally adjacent halfpel points shall be interpolated
linearls with rounding to nearest and halfway values rounded up.
points which lie on 2 diagonals at the same time should only use the one
diagonal not containing the fullpel point
F-->O---q---O<--h1->O---q---O<--F
v \ / v \ / v
O O O O O O O
| / | \ |
q q q q q
| / | \ |
O O O O O O O
^ / \ ^ / \ ^
h2-->O---q---O<--h3->O---q---O<--h2
v \ / v \ / v
O O O O O O O
| \ | / |
q q q q q
| \ | / |
O O O O O O O
^ / \ ^ / \ ^
F-->O---q---O<--h1->O---q---O<--F
the remaining points shall be bilinearly interpolated from the
up to 4 surrounding halfpel and fullpel points, again rounding should be to
nearest and halfway values rounded up
compliant Snow decoders MUST support 1-1/8 pel luma and 1/2-1/16 pel chroma
interpolation at least
Overlapped block motion compensation:
-------------------------------------
FIXME
LL band prediction:
===================
Each sample in the LL0 subband is predicted by the median of the left, top and
left+top-topleft samples, samples outside the subband shall be considered to
be 0. To reverse this prediction in the decoder apply the following.
for(y=0; y<height; y++){
for(x=0; x<width; x++){
sample[y][x] += median(sample[y-1][x],
sample[y][x-1],
sample[y-1][x]+sample[y][x-1]-sample[y-1][x-1]);
}
}
sample[-1][*]=sample[*][-1]= 0;
width,height here are the width and height of the LL0 subband not of the final
video
Dequantizaton:
==============
FIXME
Wavelet Transform:
==================
Snow supports 2 wavelet transforms, the symmetric biorthogonal 5/3 integer
transform and a integer approximation of the symmetric biorthogonal 9/7
daubechies wavelet.
2D IDWT (inverse discrete wavelet transform)
--------------------------------------------
The 2D IDWT applies a 2D filter recursively, each time combining the
4 lowest frequency subbands into a single subband until only 1 subband
remains.
The 2D filter is done by first applying a 1D filter in the vertical direction
and then applying it in the horizontal one.
--------------- --------------- --------------- ---------------
|LL0|HL0| | | | | | | | | | | |
|---+---| HL1 | | L0|H0 | HL1 | | LL1 | HL1 | | | |
|LH0|HH0| | | | | | | | | | | |
|-------+-------|->|-------+-------|->|-------+-------|->| L1 | H1 |->...
| | | | | | | | | | | |
| LH1 | HH1 | | LH1 | HH1 | | LH1 | HH1 | | | |
| | | | | | | | | | | |
--------------- --------------- --------------- ---------------
1D Filter:
----------
1. interleave the samples of the low and high frequency subbands like
s={L0, H0, L1, H1, L2, H2, L3, H3, ... }
note, this can end with a L or a H, the number of elements shall be w
s[-1] shall be considered equivalent to s[1 ]
s[w ] shall be considered equivalent to s[w-2]
2. perform the lifting steps in order as described below
5/3 Integer filter:
1. s[i] -= (s[i-1] + s[i+1] + 2)>>2; for all even i < w
2. s[i] += (s[i-1] + s[i+1] )>>1; for all odd i < w
\ | /|\ | /|\ | /|\ | /|\
\|/ | \|/ | \|/ | \|/ |
+ | + | + | + | -1/4
/|\ | /|\ | /|\ | /|\ |
/ | \|/ | \|/ | \|/ | \|/
| + | + | + | + +1/2
Snow's 9/7 Integer filter:
1. s[i] -= (3*(s[i-1] + s[i+1]) + 4)>>3; for all even i < w
2. s[i] -= s[i-1] + s[i+1] ; for all odd i < w
3. s[i] += ( s[i-1] + s[i+1] + 4*s[i] + 8)>>4; for all even i < w
4. s[i] += (3*(s[i-1] + s[i+1]) )>>1; for all odd i < w
\ | /|\ | /|\ | /|\ | /|\
\|/ | \|/ | \|/ | \|/ |
+ | + | + | + | -3/8
/|\ | /|\ | /|\ | /|\ |
/ | \|/ | \|/ | \|/ | \|/
(| + (| + (| + (| + -1
\ + /|\ + /|\ + /|\ + /|\ +1/4
\|/ | \|/ | \|/ | \|/ |
+ | + | + | + | +1/16
/|\ | /|\ | /|\ | /|\ |
/ | \|/ | \|/ | \|/ | \|/
| + | + | + | + +3/2
optimization tips:
following are exactly identical
(3a)>>1 == a + (a>>1)
(a + 4b + 8)>>4 == ((a>>2) + b + 2)>>2
16bit implementation note:
The IDWT can be implemented with 16bits, but this requires some care to
prevent overflows, the following list, lists the minimum number of bits needed
for some terms
1. lifting step
A= s[i-1] + s[i+1] 16bit
3*A + 4 18bit
A + (A>>1) + 2 17bit
3. lifting step
s[i-1] + s[i+1] 17bit
4. lifiting step
3*(s[i-1] + s[i+1]) 17bit
TODO:
=====
Important:
finetune initial contexts
flip wavelet?
try to use the wavelet transformed predicted image (motion compensated image) as context for coding the residual coefficients
try the MV length as context for coding the residual coefficients
use extradata for stuff which is in the keyframes now?
the MV median predictor is patented IIRC
implement per picture halfpel interpolation
try different range coder state transition tables for different contexts
Not Important:
compare the 6 tap and 8 tap hpel filters (psnr/bitrate and subjective quality)
spatial_scalability b vs u (!= 0 breaks syntax anyway so we can add a u later)
Credits:
========
Michael Niedermayer
Loren Merritt
Copyright:
==========
GPL + GFDL + whatever is needed to make this a RFC

/contrib/sdk/sources/ffmpeg/doc/soc.txt
0,0 → 1,24
Google Summer of Code and similar project guidelines
Summer of Code is a project by Google in which students are paid to implement
some nice new features for various participating open source projects ...
This text is a collection of things to take care of for the next soc as
it's a little late for this year's soc (2006).
The Goal:
Our goal in respect to soc is and must be of course exactly one thing and
that is to improve FFmpeg, to reach this goal, code must
* conform to the development policy and patch submission guidelines
* must improve FFmpeg somehow (faster, smaller, "better",
more codecs supported, fewer bugs, cleaner, ...)
for mentors and other developers to help students to reach that goal it is
essential that changes to their codebase are publicly visible, clean and
easy reviewable that again leads us to:
* use of a revision control system like git
* separation of cosmetic from non-cosmetic changes (this is almost entirely
ignored by mentors and students in soc 2006 which might lead to a surprise
when the code will be reviewed at the end before a possible inclusion in
FFmpeg, individual changes were generally not reviewable due to cosmetics).
* frequent commits, so that comments can be provided early

/contrib/sdk/sources/ffmpeg/doc/swresample.txt
0,0 → 1,46
The official guide to swresample for confused developers.
=========================================================
Current (simplified) Architecture:
---------------------------------
Input
v
__________________/|\___________
/ | \
/ input sample format convert v
/ | ___________/
| |/
| v
| ___________/|\___________ _____________
| / | \ | |
| Rematrix | resample <---->| Buffers |
| \___________ | ___________/ |_____________|
v \|/
Special Converter v
v ___________/|\___________ _____________
| / | \ | |
| Rematrix | resample <---->| Buffers |
| \___________ | ___________/ |_____________|
| \|/
| v
| |\___________
\ | \
\ output sample format convert v
\_________________ | ___________/
\|/
v
Output
Planar/Packed conversion is done when needed during sample format conversion.
Every step can be skipped without memcpy when it is not needed.
Either Resampling and Rematrixing can be performed first depending on which
way it is faster.
The Buffers are needed for resampling due to resamplng being a process that
requires future and past data, it thus also introduces inevitably a delay when
used.
Internally 32bit float and 16bit int is supported currently, other formats can
easily be added.
Externally all sample formats in packed and planar configuration are supported
It's also trivial to add special converters for common cases.
If only sample format and/or packed/planar conversion is needed, it
is performed from input to output directly in a single pass with no intermediates.

/contrib/sdk/sources/ffmpeg/doc/swscale.txt
0,0 → 1,98
The official guide to swscale for confused developers.
========================================================
Current (simplified) Architecture:
---------------------------------
Input
v
_______OR_________
/ \
/ \
special converter [Input to YUV converter]
| |
| (8bit YUV 4:4:4 / 4:2:2 / 4:2:0 / 4:0:0 )
| |
| v
| Horizontal scaler
| |
| (15bit YUV 4:4:4 / 4:2:2 / 4:2:0 / 4:1:1 / 4:0:0 )
| |
| v
| Vertical scaler and output converter
| |
v v
output
Swscale has 2 scaler paths. Each side must be capable of handling
slices, that is, consecutive non-overlapping rectangles of dimension
(0,slice_top) - (picture_width, slice_bottom).
special converter
These generally are unscaled converters of common
formats, like YUV 4:2:0/4:2:2 -> RGB12/15/16/24/32. Though it could also
in principle contain scalers optimized for specific common cases.
Main path
The main path is used when no special converter can be used. The code
is designed as a destination line pull architecture. That is, for each
output line the vertical scaler pulls lines from a ring buffer. When
the ring buffer does not contain the wanted line, then it is pulled from
the input slice through the input converter and horizontal scaler.
The result is also stored in the ring buffer to serve future vertical
scaler requests.
When no more output can be generated because lines from a future slice
would be needed, then all remaining lines in the current slice are
converted, horizontally scaled and put in the ring buffer.
[This is done for luma and chroma, each with possibly different numbers
of lines per picture.]
Input to YUV Converter
When the input to the main path is not planar 8 bits per component YUV or
8-bit gray, it is converted to planar 8-bit YUV. Two sets of converters
exist for this currently: One performs horizontal downscaling by 2
before the conversion, the other leaves the full chroma resolution,
but is slightly slower. The scaler will try to preserve full chroma
when the output uses it. It is possible to force full chroma with
SWS_FULL_CHR_H_INP even for cases where the scaler thinks it is useless.
Horizontal scaler
There are several horizontal scalers. A special case worth mentioning is
the fast bilinear scaler that is made of runtime-generated MMXEXT code
using specially tuned pshufw instructions.
The remaining scalers are specially-tuned for various filter lengths.
They scale 8-bit unsigned planar data to 16-bit signed planar data.
Future >8 bits per component inputs will need to add a new horizontal
scaler that preserves the input precision.
Vertical scaler and output converter
There is a large number of combined vertical scalers + output converters.
Some are:
* unscaled output converters
* unscaled output converters that average 2 chroma lines
* bilinear converters (C, MMX and accurate MMX)
* arbitrary filter length converters (C, MMX and accurate MMX)
And
* Plain C 8-bit 4:2:2 YUV -> RGB converters using LUTs
* Plain C 17-bit 4:4:4 YUV -> RGB converters using multiplies
* MMX 11-bit 4:2:2 YUV -> RGB converters
* Plain C 16-bit Y -> 16-bit gray
...
RGB with less than 8 bits per component uses dither to improve the
subjective quality and low-frequency accuracy.
Filter coefficients:
--------------------
There are several different scalers (bilinear, bicubic, lanczos, area,
sinc, ...). Their coefficients are calculated in initFilter().
Horizontal filter coefficients have a 1.0 point at 1 << 14, vertical ones at
1 << 12. The 1.0 points have been chosen to maximize precision while leaving
a little headroom for convolutional filters like sharpening filters and
minimizing SIMD instructions needed to apply them.
It would be trivial to use a different 1.0 point if some specific scaler
would benefit from it.
Also, as already hinted at, initFilter() accepts an optional convolutional
filter as input that can be used for contrast, saturation, blur, sharpening
shift, chroma vs. luma shift, ...

/contrib/sdk/sources/ffmpeg/doc/t2h.init
0,0 → 1,115
# no horiz rules between sections
$end_section = \&FFmpeg_end_section;
sub FFmpeg_end_section($$)
{
}
$EXTRA_HEAD =
'<link rel="icon" href="favicon.png" type="image/png" />
';
$CSS_LINES = $ENV{"FFMPEG_CSS"} || <<EOT;
<link rel="stylesheet" type="text/css" href="default.css" />
EOT
my $TEMPLATE_HEADER = $ENV{"FFMPEG_HEADER"} || <<EOT;
<link rel="icon" href="favicon.png" type="image/png" />
</head>
<body>
<div id="container">
<div id="body">
EOT
$PRE_BODY_CLOSE = '</div></div>';
$SMALL_RULE = '';
$BODYTEXT = '';
$print_page_foot = \&FFmpeg_print_page_foot;
sub FFmpeg_print_page_foot($$)
{
my $fh = shift;
my $program_string = defined &T2H_DEFAULT_program_string ?
T2H_DEFAULT_program_string() : program_string();
print $fh '<footer class="footer pagination-right">' . "\n";
print $fh '<span class="label label-info">' . $program_string;
print $fh "</span></footer></div></div></body>\n";
}
$float = \&FFmpeg_float;
sub FFmpeg_float($$$$)
{
my $text = shift;
my $float = shift;
my $caption = shift;
my $shortcaption = shift;
my $label = '';
if (exists($float->{'id'}))
{
$label = &$anchor($float->{'id'});
}
my $class = '';
my $subject = '';
if ($caption =~ /NOTE/)
{
$class = "alert alert-info";
}
elsif ($caption =~ /IMPORTANT/)
{
$class = "alert alert-warning";
}
return '<div class="float ' . $class . '">' . "$label\n" . $text . '</div>';
}
$print_page_head = \&FFmpeg_print_page_head;
sub FFmpeg_print_page_head($$)
{
my $fh = shift;
my $longtitle = "$Texi2HTML::THISDOC{'fulltitle_no_texi'}";
$longtitle .= ": $Texi2HTML::NO_TEXI{'This'}" if exists $Texi2HTML::NO_TEXI{'This'};
my $description = $DOCUMENT_DESCRIPTION;
$description = $longtitle if (!defined($description));
$description = "<meta name=\"description\" content=\"$description\">" if
($description ne '');
$description = $Texi2HTML::THISDOC{'documentdescription'} if (defined($Texi2HTML::THISDOC{'documentdescription'}));
my $encoding = '';
$encoding = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=$ENCODING\">" if (defined($ENCODING) and ($ENCODING ne ''));
$longtitle =~ s/Documentation.*//g;
$longtitle = "FFmpeg documentation : " . $longtitle;
print $fh <<EOT;
<!DOCTYPE html>
<html>
$Texi2HTML::THISDOC{'copying'}<!-- Created on $Texi2HTML::THISDOC{today} by $Texi2HTML::THISDOC{program} -->
<!--
$Texi2HTML::THISDOC{program_authors}
-->
<head>
<title>$longtitle</title>
$description
<meta name="keywords" content="$longtitle">
<meta name="Generator" content="$Texi2HTML::THISDOC{program}">
$encoding
$CSS_LINES
$TEMPLATE_HEADER
EOT
}
# declare encoding in header
$IN_ENCODING = $ENCODING = "utf-8";
# no navigation elements
$SECTION_NAVIGATION = 0;
# the same for texi2html 5.0
$HEADERS = 0;
# TOC and Chapter headings link
$TOC_LINKS = 1;
# print the TOC where @contents is used
$INLINE_CONTENTS = 1;

/contrib/sdk/sources/ffmpeg/doc/tablegen.txt
0,0 → 1,70
Writing a table generator
This documentation is preliminary.
Parts of the API are not good and should be changed.
Basic concepts
A table generator consists of two files, *_tablegen.c and *_tablegen.h.
The .h file will provide the variable declarations and initialization
code for the tables, the .c calls the initialization code and then prints
the tables as a header file using the tableprint.h helpers.
Both of these files will be compiled for the host system, so to avoid
breakage with cross-compilation neither of them may include, directly
or indirectly, config.h or avconfig.h.
This means that e.g. libavutil/mathematics.h is ok but libavutil/libm.h is not.
Due to this, the .c file or Makefile may have to provide additional defines
or stubs, though if possible this should be avoided.
In particular, CONFIG_HARDCODED_TABLES should always be defined to 0.
The .c file
This file should include the *_tablegen.h and tableprint.h files and
anything else it needs as long as it does not depend on config.h or
avconfig.h.
In addition to that it must contain a main() function which initializes
all tables by calling the init functions from the .h file and then prints
them.
The printing code typically looks like this:
write_fileheader();
printf("static const uint8_t my_array[100] = {\n");
write_uint8_t_array(my_array, 100);
printf("};\n");
This is the more generic form, in case you need to do something special.
Usually you should instead use the short form:
write_fileheader();
WRITE_ARRAY("static const", uint8_t, my_array);
write_fileheader() adds some minor things like a "this is a generated file"
comment and some standard includes.
tablegen.h defines some write functions for one- and two-dimensional arrays
for standard types - they print only the "core" parts so they are easier
to reuse for multi-dimensional arrays so the outermost {} must be printed
separately.
If there's no standard function for printing the type you need, the
WRITE_1D_FUNC_ARGV macro is a very quick way to create one.
See libavcodec/dv_tablegen.c for an example.
The .h file
This file should contain:
- one or more initialization functions
- the table variable declarations
If CONFIG_HARDCODED_TABLES is set, the initialization functions should
not do anything, and instead of the variable declarations the
generated *_tables.h file should be included.
Since that will be generated in the build directory, the path must be
included, i.e.
#include "libavcodec/example_tables.h"
not
#include "example_tables.h"
Makefile changes
To make the automatic table creation work, you must manually declare the
new dependency.
For this add a line similar to this:
$(SUBDIR)example.o: $(SUBDIR)example_tables.h
under the "ifdef CONFIG_HARDCODED_TABLES" section in the Makefile.

/contrib/sdk/sources/ffmpeg/doc/texi2pod.pl
0,0 → 1,453
#! /usr/bin/perl
# Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
# This file is part of GNU CC.
# GNU CC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# GNU CC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with GNU CC; see the file COPYING. If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301 USA
# This does trivial (and I mean _trivial_) conversion of Texinfo
# markup to Perl POD format. It's intended to be used to extract
# something suitable for a manpage from a Texinfo document.
use warnings;
$output = 0;
$skipping = 0;
%chapters = ();
@chapters_sequence = ();
$chapter = "";
@icstack = ();
@endwstack = ();
@skstack = ();
@instack = ();
$shift = "";
%defs = ();
$fnno = 1;
$inf = "";
@ibase = ();
while ($_ = shift) {
if (/^-D(.*)$/) {
if ($1 ne "") {
$flag = $1;
} else {
$flag = shift;
}
$value = "";
($flag, $value) = ($flag =~ /^([^=]+)(?:=(.+))?/);
die "no flag specified for -D\n"
unless $flag ne "";
die "flags may only contain letters, digits, hyphens, dashes and underscores\n"
unless $flag =~ /^[a-zA-Z0-9_-]+$/;
$defs{$flag} = $value;
} elsif (/^-I(.*)$/) {
push @ibase, $1 ne "" ? $1 : shift;
} elsif (/^-/) {
usage();
} else {
$in = $_, next unless defined $in;
$out = $_, next unless defined $out;
usage();
}
}
push @ibase, ".";
if (defined $in) {
$inf = gensym();
open($inf, "<$in") or die "opening \"$in\": $!\n";
push @ibase, $1 if $in =~ m|^(.+)/[^/]+$|;
} else {
$inf = \*STDIN;
}
if (defined $out) {
open(STDOUT, ">$out") or die "opening \"$out\": $!\n";
}
while(defined $inf) {
INF: while(<$inf>) {
# Certain commands are discarded without further processing.
/^\@(?:
[a-z]+index # @*index: useful only in complete manual
|need # @need: useful only in printed manual
|(?:end\s+)?group # @group .. @end group: ditto
|page # @page: ditto
|node # @node: useful only in .info file
|(?:end\s+)?ifnottex # @ifnottex .. @end ifnottex: use contents
)\b/x and next;
chomp;
# Look for filename and title markers.
/^\@setfilename\s+([^.]+)/ and $fn = $1, next;
/^\@settitle\s+([^.]+)/ and $tl = postprocess($1), next;
# Identify a man title but keep only the one we are interested in.
/^\@c\s+man\s+title\s+([A-Za-z0-9-]+)\s+(.+)/ and do {
if (exists $defs{$1}) {
$fn = $1;
$tl = postprocess($2);
}
next;
};
/^\@include\s+(.+)$/ and do {
push @instack, $inf;
$inf = gensym();
for (@ibase) {
open($inf, "<" . $_ . "/" . $1) and next INF;
}
die "cannot open $1: $!\n";
};
/^\@chapter\s+([A-Za-z ]+)/ and do {
# close old chapter
$chapters{$chapter_name} .= postprocess($chapter) if ($chapter_name);
# start new chapter
$chapter_name = $1, push (@chapters_sequence, $chapter_name) unless $skipping;
$chapters{$chapter_name} = "" unless exists $chapters{$chapter_name};
$chapter = "";
$output = 1;
next;
};
/^\@bye/ and do {
# close old chapter
$chapters{$chapter_name} .= postprocess($chapter) if ($chapter_name);
last INF;
};
# handle variables
/^\@set\s+([a-zA-Z0-9_-]+)\s*(.*)$/ and do {
$defs{$1} = $2;
next;
};
/^\@clear\s+([a-zA-Z0-9_-]+)/ and do {
delete $defs{$1};
next;
};
next unless $output;
# Discard comments. (Can't do it above, because then we'd never see
# @c man lines.)
/^\@c\b/ and next;
# End-block handler goes up here because it needs to operate even
# if we are skipping.
/^\@end\s+([a-z]+)/ and do {
# Ignore @end foo, where foo is not an operation which may
# cause us to skip, if we are presently skipping.
my $ended = $1;
next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex|ifhtml|ifnothtml)$/;
die "\@end $ended without \@$ended at line $.\n" unless defined $endw;
die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw;
$endw = pop @endwstack;
if ($ended =~ /^(?:ifset|ifclear|ignore|menu|iftex|ifhtml|ifnothtml)$/) {
$skipping = pop @skstack;
next;
} elsif ($ended =~ /^(?:example|smallexample|display)$/) {
$shift = "";
$_ = ""; # need a paragraph break
} elsif ($ended =~ /^(?:itemize|enumerate|(?:multi|[fv])?table)$/) {
$_ = "\n=back\n";
$ic = pop @icstack;
} else {
die "unknown command \@end $ended at line $.\n";
}
};
# We must handle commands which can cause skipping even while we
# are skipping, otherwise we will not process nested conditionals
# correctly.
/^\@ifset\s+([a-zA-Z0-9_-]+)/ and do {
push @endwstack, $endw;
push @skstack, $skipping;
$endw = "ifset";
$skipping = 1 unless exists $defs{$1};
next;
};
/^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do {
push @endwstack, $endw;
push @skstack, $skipping;
$endw = "ifclear";
$skipping = 1 if exists $defs{$1};
next;
};
/^\@(ignore|menu|iftex|ifhtml|ifnothtml)\b/ and do {
push @endwstack, $endw;
push @skstack, $skipping;
$endw = $1;
$skipping = $endw !~ /ifnothtml/;
next;
};
next if $skipping;
# Character entities. First the ones that can be replaced by raw text
# or discarded outright:
s/\@copyright\{\}/(c)/g;
s/\@dots\{\}/.../g;
s/\@enddots\{\}/..../g;
s/\@([.!? ])/$1/g;
s/\@[:-]//g;
s/\@bullet(?:\{\})?/*/g;
s/\@TeX\{\}/TeX/g;
s/\@pounds\{\}/\#/g;
s/\@minus(?:\{\})?/-/g;
# Now the ones that have to be replaced by special escapes
# (which will be turned back into text by unmunge())
s/&/&amp;/g;
s/\@\{/&lbrace;/g;
s/\@\}/&rbrace;/g;
s/\@\@/&at;/g;
# Inside a verbatim block, handle @var specially.
if ($shift ne "") {
s/\@var\{([^\}]*)\}/<$1>/g;
}
# POD doesn't interpret E<> inside a verbatim block.
if ($shift eq "") {
s/</&lt;/g;
s/>/&gt;/g;
} else {
s/</&LT;/g;
s/>/&GT;/g;
}
# Single line command handlers.
/^\@(?:section|unnumbered|unnumberedsec|center|heading)\s+(.+)$/
and $_ = "\n=head2 $1\n";
/^\@(?:subsection|subheading)\s+(.+)$/
and $_ = "\n=head3 $1\n";
/^\@(?:subsubsection|subsubheading)\s+(.+)$/
and $_ = "\n=head4 $1\n";
# Block command handlers:
/^\@itemize\s*(\@[a-z]+|\*|-)?/ and do {
push @endwstack, $endw;
push @icstack, $ic;
$ic = $1 ? $1 : "*";
$_ = "\n=over 4\n";
$endw = "itemize";
};
/^\@enumerate(?:\s+([a-zA-Z0-9]+))?/ and do {
push @endwstack, $endw;
push @icstack, $ic;
if (defined $1) {
$ic = $1 . ".";
} else {
$ic = "1.";
}
$_ = "\n=over 4\n";
$endw = "enumerate";
};
/^\@((?:multi|[fv])?table)\s+(\@[a-z]+)/ and do {
push @endwstack, $endw;
push @icstack, $ic;
$endw = $1;
$ic = $2;
$ic =~ s/\@(?:samp|strong|key|gcctabopt|option|env|command)/B/;
$ic =~ s/\@(?:code|kbd)/C/;
$ic =~ s/\@(?:dfn|var|emph|cite|i)/I/;
$ic =~ s/\@(?:file)/F/;
$ic =~ s/\@(?:columnfractions)//;
$_ = "\n=over 4\n";
};
/^\@((?:small)?example|display)/ and do {
push @endwstack, $endw;
$endw = $1;
$shift = "\t";
$_ = ""; # need a paragraph break
};
/^\@item\s+(.*\S)\s*$/ and $endw eq "multitable" and do {
my $columns = $1;
$columns =~ s/\@tab/ : /;
$_ = "\n=item B&LT;". $columns ."&GT;\n";
};
/^\@tab\s+(.*\S)\s*$/ and $endw eq "multitable" and do {
my $columns = $1;
$columns =~ s/\@tab/ : /;
$_ = " : ". $columns;
$chapter =~ s/\n+\s+$//;
};
/^\@itemx?\s*(.+)?$/ and do {
if (defined $1) {
# Entity escapes prevent munging by the <> processing below.
$_ = "\n=item $ic\&LT;$1\&GT;\n";
} else {
$_ = "\n=item $ic\n";
$ic =~ y/A-Ya-y/B-Zb-z/;
$ic =~ s/(\d+)/$1 + 1/eg;
}
};
$chapter .= $shift.$_."\n";
}
# End of current file.
close($inf);
$inf = pop @instack;
}
die "No filename or title\n" unless defined $fn && defined $tl;
$chapters{NAME} = "$fn \- $tl\n";
$chapters{FOOTNOTES} .= "=back\n" if exists $chapters{FOOTNOTES};
unshift @chapters_sequence, "NAME";
for $chapter (@chapters_sequence) {
if (exists $chapters{$chapter}) {
$head = uc($chapter);
print "=head1 $head\n\n";
print scalar unmunge ($chapters{$chapter});
print "\n";
}
}
sub usage
{
die "usage: $0 [-D toggle...] [infile [outfile]]\n";
}
sub postprocess
{
local $_ = $_[0];
# @value{foo} is replaced by whatever 'foo' is defined as.
while (m/(\@value\{([a-zA-Z0-9_-]+)\})/g) {
if (! exists $defs{$2}) {
print STDERR "Option $2 not defined\n";
s/\Q$1\E//;
} else {
$value = $defs{$2};
s/\Q$1\E/$value/;
}
}
# Formatting commands.
# Temporary escape for @r.
s/\@r\{([^\}]*)\}/R<$1>/g;
s/\@(?:dfn|var|emph|cite|i)\{([^\}]*)\}/I<$1>/g;
s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g;
s/\@(?:gccoptlist|samp|strong|key|option|env|command|b)\{([^\}]*)\}/B<$1>/g;
s/\@sc\{([^\}]*)\}/\U$1/g;
s/\@file\{([^\}]*)\}/F<$1>/g;
s/\@w\{([^\}]*)\}/S<$1>/g;
s/\@(?:dmn|math)\{([^\}]*)\}/$1/g;
# Cross references are thrown away, as are @noindent and @refill.
# (@noindent is impossible in .pod, and @refill is unnecessary.)
# @* is also impossible in .pod; we discard it and any newline that
# follows it. Similarly, our macro @gol must be discarded.
s/\@anchor{(?:[^\}]*)\}//g;
s/\(?\@xref\{(?:[^\}]*)\}(?:[^.<]|(?:<[^<>]*>))*\.\)?//g;
s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g;
s/;\s+\@pxref\{(?:[^\}]*)\}//g;
s/\@ref\{(?:[^,\}]*,)(?:[^,\}]*,)([^,\}]*).*\}/$1/g;
s/\@ref\{([^\}]*)\}/$1/g;
s/\@noindent\s*//g;
s/\@refill//g;
s/\@gol//g;
s/\@\*\s*\n?//g;
# @uref can take one, two, or three arguments, with different
# semantics each time. @url and @email are just like @uref with
# one argument, for our purposes.
s/\@(?:uref|url|email)\{([^\},]*),?[^\}]*\}/&lt;B<$1>&gt;/g;
s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g;
s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g;
# Turn B<blah I<blah> blah> into B<blah> I<blah> B<blah> to
# match Texinfo semantics of @emph inside @samp. Also handle @r
# inside bold.
s/&LT;/</g;
s/&GT;/>/g;
1 while s/B<((?:[^<>]|I<[^<>]*>)*)R<([^>]*)>/B<$1>${2}B</g;
1 while (s/B<([^<>]*)I<([^>]+)>/B<$1>I<$2>B</g);
1 while (s/I<([^<>]*)B<([^>]+)>/I<$1>B<$2>I</g);
s/[BI]<>//g;
s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g;
s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g;
# Extract footnotes. This has to be done after all other
# processing because otherwise the regexp will choke on formatting
# inside @footnote.
while (/\@footnote/g) {
s/\@footnote\{([^\}]+)\}/[$fnno]/;
add_footnote($1, $fnno);
$fnno++;
}
return $_;
}
sub unmunge
{
# Replace escaped symbols with their equivalents.
local $_ = $_[0];
s/&lt;/E<lt>/g;
s/&gt;/E<gt>/g;
s/&lbrace;/\{/g;
s/&rbrace;/\}/g;
s/&at;/\@/g;
s/&amp;/&/g;
return $_;
}
sub add_footnote
{
unless (exists $chapters{FOOTNOTES}) {
$chapters{FOOTNOTES} = "\n=over 4\n\n";
}
$chapters{FOOTNOTES} .= "=item $fnno.\n\n"; $fnno++;
$chapters{FOOTNOTES} .= $_[0];
$chapters{FOOTNOTES} .= "\n\n";
}
# stolen from Symbol.pm
{
my $genseq = 0;
sub gensym
{
my $name = "GEN" . $genseq++;
my $ref = \*{$name};
delete $::{$name};
return $ref;
}
}

/contrib/sdk/sources/ffmpeg/doc/utils.texi
0,0 → 1,1064
@chapter Syntax
@c man begin SYNTAX
This section documents the syntax and formats employed by the FFmpeg
libraries and tools.
@anchor{quoting_and_escaping}
@section Quoting and escaping
FFmpeg adopts the following quoting and escaping mechanism, unless
explicitly specified. The following rules are applied:
@itemize
@item
@code{'} and @code{\} are special characters (respectively used for
quoting and escaping). In addition to them, there might be other
special characters depending on the specific syntax where the escaping
and quoting are employed.
@item
A special character is escaped by prefixing it with a '\'.
@item
All characters enclosed between '' are included literally in the
parsed string. The quote character @code{'} itself cannot be quoted,
so you may need to close the quote and escape it.
@item
Leading and trailing whitespaces, unless escaped or quoted, are
removed from the parsed string.
@end itemize
Note that you may need to add a second level of escaping when using
the command line or a script, which depends on the syntax of the
adopted shell language.
The function @code{av_get_token} defined in
@file{libavutil/avstring.h} can be used to parse a token quoted or
escaped according to the rules defined above.
The tool @file{tools/ffescape} in the FFmpeg source tree can be used
to automatically quote or escape a string in a script.
@subsection Examples
@itemize
@item
Escape the string @code{Crime d'Amour} containing the @code{'} special
character:
@example
Crime d\'Amour
@end example
@item
The string above contains a quote, so the @code{'} needs to be escaped
when quoting it:
@example
'Crime d'\''Amour'
@end example
@item
Include leading or trailing whitespaces using quoting:
@example
' this string starts and ends with whitespaces '
@end example
@item
Escaping and quoting can be mixed together:
@example
' The string '\'string\'' is a string '
@end example
@item
To include a literal @code{\} you can use either escaping or quoting:
@example
'c:\foo' can be written as c:\\foo
@end example
@end itemize
@anchor{date syntax}
@section Date
The accepted syntax is:
@example
[(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH:MM:SS[.m...]]])|(HHMMSS[.m...]]]))[Z]
now
@end example
If the value is "now" it takes the current time.
Time is local time unless Z is appended, in which case it is
interpreted as UTC.
If the year-month-day part is not specified it takes the current
year-month-day.
@anchor{time duration syntax}
@section Time duration
There are two accepted syntaxes for expressing time duration.
@example
[-][@var{HH}:]@var{MM}:@var{SS}[.@var{m}...]
@end example
@var{HH} expresses the number of hours, @var{MM} the number of minutes
for a maximum of 2 digits, and @var{SS} the number of seconds for a
maximum of 2 digits. The @var{m} at the end expresses decimal value for
@var{SS}.
@emph{or}
@example
[-]@var{S}+[.@var{m}...]
@end example
@var{S} expresses the number of seconds, with the optional decimal part
@var{m}.
In both expressions, the optional @samp{-} indicates negative duration.
@subsection Examples
The following examples are all valid time duration:
@table @samp
@item 55
55 seconds
@item 12:03:45
12 hours, 03 minutes and 45 seconds
@item 23.189
23.189 seconds
@end table
@anchor{video size syntax}
@section Video size
Specify the size of the sourced video, it may be a string of the form
@var{width}x@var{height}, or the name of a size abbreviation.
The following abbreviations are recognized:
@table @samp
@item ntsc
720x480
@item pal
720x576
@item qntsc
352x240
@item qpal
352x288
@item sntsc
640x480
@item spal
768x576
@item film
352x240
@item ntsc-film
352x240
@item sqcif
128x96
@item qcif
176x144
@item cif
352x288
@item 4cif
704x576
@item 16cif
1408x1152
@item qqvga
160x120
@item qvga
320x240
@item vga
640x480
@item svga
800x600
@item xga
1024x768
@item uxga
1600x1200
@item qxga
2048x1536
@item sxga
1280x1024
@item qsxga
2560x2048
@item hsxga
5120x4096
@item wvga
852x480
@item wxga
1366x768
@item wsxga
1600x1024
@item wuxga
1920x1200
@item woxga
2560x1600
@item wqsxga
3200x2048
@item wquxga
3840x2400
@item whsxga
6400x4096
@item whuxga
7680x4800
@item cga
320x200
@item ega
640x350
@item hd480
852x480
@item hd720
1280x720
@item hd1080
1920x1080
@item 2k
2048x1080
@item 2kflat
1998x1080
@item 2kscope
2048x858
@item 4k
4096x2160
@item 4kflat
3996x2160
@item 4kscope
4096x1716
@item nhd
640x360
@item hqvga
240x160
@item wqvga
400x240
@item fwqvga
432x240
@item hvga
480x320
@item qhd
960x540
@end table
@anchor{video rate syntax}
@section Video rate
Specify the frame rate of a video, expressed as the number of frames
generated per second. It has to be a string in the format
@var{frame_rate_num}/@var{frame_rate_den}, an integer number, a float
number or a valid video frame rate abbreviation.
The following abbreviations are recognized:
@table @samp
@item ntsc
30000/1001
@item pal
25/1
@item qntsc
30000/1001
@item qpal
25/1
@item sntsc
30000/1001
@item spal
25/1
@item film
24/1
@item ntsc-film
24000/1001
@end table
@anchor{ratio syntax}
@section Ratio
A ratio can be expressed as an expression, or in the form
@var{numerator}:@var{denominator}.
Note that a ratio with infinite (1/0) or negative value is
considered valid, so you should check on the returned value if you
want to exclude those values.
The undefined value can be expressed using the "0:0" string.
@anchor{color syntax}
@section Color
It can be the name of a color as defined below (case insensitive match) or a
@code{[0x|#]RRGGBB[AA]} sequence, possibly followed by @@ and a string
representing the alpha component.
The alpha component may be a string composed by "0x" followed by an
hexadecimal number or a decimal number between 0.0 and 1.0, which
represents the opacity value (@samp{0x00} or @samp{0.0} means completely
transparent, @samp{0xff} or @samp{1.0} completely opaque). If the alpha
component is not specified then @samp{0xff} is assumed.
The string @samp{random} will result in a random color.
The following names of colors are recognized:
@table @samp
@item AliceBlue
0xF0F8FF
@item AntiqueWhite
0xFAEBD7
@item Aqua
0x00FFFF
@item Aquamarine
0x7FFFD4
@item Azure
0xF0FFFF
@item Beige
0xF5F5DC
@item Bisque
0xFFE4C4
@item Black
0x000000
@item BlanchedAlmond
0xFFEBCD
@item Blue
0x0000FF
@item BlueViolet
0x8A2BE2
@item Brown
0xA52A2A
@item BurlyWood
0xDEB887
@item CadetBlue
0x5F9EA0
@item Chartreuse
0x7FFF00
@item Chocolate
0xD2691E
@item Coral
0xFF7F50
@item CornflowerBlue
0x6495ED
@item Cornsilk
0xFFF8DC
@item Crimson
0xDC143C
@item Cyan
0x00FFFF
@item DarkBlue
0x00008B
@item DarkCyan
0x008B8B
@item DarkGoldenRod
0xB8860B
@item DarkGray
0xA9A9A9
@item DarkGreen
0x006400
@item DarkKhaki
0xBDB76B
@item DarkMagenta
0x8B008B
@item DarkOliveGreen
0x556B2F
@item Darkorange
0xFF8C00
@item DarkOrchid
0x9932CC
@item DarkRed
0x8B0000
@item DarkSalmon
0xE9967A
@item DarkSeaGreen
0x8FBC8F
@item DarkSlateBlue
0x483D8B
@item DarkSlateGray
0x2F4F4F
@item DarkTurquoise
0x00CED1
@item DarkViolet
0x9400D3
@item DeepPink
0xFF1493
@item DeepSkyBlue
0x00BFFF
@item DimGray
0x696969
@item DodgerBlue
0x1E90FF
@item FireBrick
0xB22222
@item FloralWhite
0xFFFAF0
@item ForestGreen
0x228B22
@item Fuchsia
0xFF00FF
@item Gainsboro
0xDCDCDC
@item GhostWhite
0xF8F8FF
@item Gold
0xFFD700
@item GoldenRod
0xDAA520
@item Gray
0x808080
@item Green
0x008000
@item GreenYellow
0xADFF2F
@item HoneyDew
0xF0FFF0
@item HotPink
0xFF69B4
@item IndianRed
0xCD5C5C
@item Indigo
0x4B0082
@item Ivory
0xFFFFF0
@item Khaki
0xF0E68C
@item Lavender
0xE6E6FA
@item LavenderBlush
0xFFF0F5
@item LawnGreen
0x7CFC00
@item LemonChiffon
0xFFFACD
@item LightBlue
0xADD8E6
@item LightCoral
0xF08080
@item LightCyan
0xE0FFFF
@item LightGoldenRodYellow
0xFAFAD2
@item LightGreen
0x90EE90
@item LightGrey
0xD3D3D3
@item LightPink
0xFFB6C1
@item LightSalmon
0xFFA07A
@item LightSeaGreen
0x20B2AA
@item LightSkyBlue
0x87CEFA
@item LightSlateGray
0x778899
@item LightSteelBlue
0xB0C4DE
@item LightYellow
0xFFFFE0
@item Lime
0x00FF00
@item LimeGreen
0x32CD32
@item Linen
0xFAF0E6
@item Magenta
0xFF00FF
@item Maroon
0x800000
@item MediumAquaMarine
0x66CDAA
@item MediumBlue
0x0000CD
@item MediumOrchid
0xBA55D3
@item MediumPurple
0x9370D8
@item MediumSeaGreen
0x3CB371
@item MediumSlateBlue
0x7B68EE
@item MediumSpringGreen
0x00FA9A
@item MediumTurquoise
0x48D1CC
@item MediumVioletRed
0xC71585
@item MidnightBlue
0x191970
@item MintCream
0xF5FFFA
@item MistyRose
0xFFE4E1
@item Moccasin
0xFFE4B5
@item NavajoWhite
0xFFDEAD
@item Navy
0x000080
@item OldLace
0xFDF5E6
@item Olive
0x808000
@item OliveDrab
0x6B8E23
@item Orange
0xFFA500
@item OrangeRed
0xFF4500
@item Orchid
0xDA70D6
@item PaleGoldenRod
0xEEE8AA
@item PaleGreen
0x98FB98
@item PaleTurquoise
0xAFEEEE
@item PaleVioletRed
0xD87093
@item PapayaWhip
0xFFEFD5
@item PeachPuff
0xFFDAB9
@item Peru
0xCD853F
@item Pink
0xFFC0CB
@item Plum
0xDDA0DD
@item PowderBlue
0xB0E0E6
@item Purple
0x800080
@item Red
0xFF0000
@item RosyBrown
0xBC8F8F
@item RoyalBlue
0x4169E1
@item SaddleBrown
0x8B4513
@item Salmon
0xFA8072
@item SandyBrown
0xF4A460
@item SeaGreen
0x2E8B57
@item SeaShell
0xFFF5EE
@item Sienna
0xA0522D
@item Silver
0xC0C0C0
@item SkyBlue
0x87CEEB
@item SlateBlue
0x6A5ACD
@item SlateGray
0x708090
@item Snow
0xFFFAFA
@item SpringGreen
0x00FF7F
@item SteelBlue
0x4682B4
@item Tan
0xD2B48C
@item Teal
0x008080
@item Thistle
0xD8BFD8
@item Tomato
0xFF6347
@item Turquoise
0x40E0D0
@item Violet
0xEE82EE
@item Wheat
0xF5DEB3
@item White
0xFFFFFF
@item WhiteSmoke
0xF5F5F5
@item Yellow
0xFFFF00
@item YellowGreen
0x9ACD32
@end table
@anchor{channel layout syntax}
@section Channel Layout
A channel layout specifies the spatial disposition of the channels in
a multi-channel audio stream. To specify a channel layout, FFmpeg
makes use of a special syntax.
Individual channels are identified by an id, as given by the table
below:
@table @samp
@item FL
front left
@item FR
front right
@item FC
front center
@item LFE
low frequency
@item BL
back left
@item BR
back right
@item FLC
front left-of-center
@item FRC
front right-of-center
@item BC
back center
@item SL
side left
@item SR
side right
@item TC
top center
@item TFL
top front left
@item TFC
top front center
@item TFR
top front right
@item TBL
top back left
@item TBC
top back center
@item TBR
top back right
@item DL
downmix left
@item DR
downmix right
@item WL
wide left
@item WR
wide right
@item SDL
surround direct left
@item SDR
surround direct right
@item LFE2
low frequency 2
@end table
Standard channel layout compositions can be specified by using the
following identifiers:
@table @samp
@item mono
FC
@item stereo
FL+FR
@item 2.1
FL+FR+LFE
@item 3.0
FL+FR+FC
@item 3.0(back)
FL+FR+BC
@item 4.0
FL+FR+FC+BC
@item quad
FL+FR+BL+BR
@item quad(side)
FL+FR+SL+SR
@item 3.1
FL+FR+FC+LFE
@item 5.0
FL+FR+FC+BL+BR
@item 5.0(side)
FL+FR+FC+SL+SR
@item 4.1
FL+FR+FC+LFE+BC
@item 5.1
FL+FR+FC+LFE+BL+BR
@item 5.1(side)
FL+FR+FC+LFE+SL+SR
@item 6.0
FL+FR+FC+BC+SL+SR
@item 6.0(front)
FL+FR+FLC+FRC+SL+SR
@item hexagonal
FL+FR+FC+BL+BR+BC
@item 6.1
FL+FR+FC+LFE+BC+SL+SR
@item 6.1
FL+FR+FC+LFE+BL+BR+BC
@item 6.1(front)
FL+FR+LFE+FLC+FRC+SL+SR
@item 7.0
FL+FR+FC+BL+BR+SL+SR
@item 7.0(front)
FL+FR+FC+FLC+FRC+SL+SR
@item 7.1
FL+FR+FC+LFE+BL+BR+SL+SR
@item 7.1(wide)
FL+FR+FC+LFE+BL+BR+FLC+FRC
@item 7.1(wide-side)
FL+FR+FC+LFE+FLC+FRC+SL+SR
@item octagonal
FL+FR+FC+BL+BR+BC+SL+SR
@item downmix
DL+DR
@end table
A custom channel layout can be specified as a sequence of terms, separated by
'+' or '|'. Each term can be:
@itemize
@item
the name of a standard channel layout (e.g. @samp{mono},
@samp{stereo}, @samp{4.0}, @samp{quad}, @samp{5.0}, etc.)
@item
the name of a single channel (e.g. @samp{FL}, @samp{FR}, @samp{FC}, @samp{LFE}, etc.)
@item
a number of channels, in decimal, optionally followed by 'c', yielding
the default channel layout for that number of channels (see the
function @code{av_get_default_channel_layout})
@item
a channel layout mask, in hexadecimal starting with "0x" (see the
@code{AV_CH_*} macros in @file{libavutil/channel_layout.h}.
@end itemize
Starting from libavutil version 53 the trailing character "c" to
specify a number of channels will be required, while a channel layout
mask could also be specified as a decimal number (if and only if not
followed by "c").
See also the function @code{av_get_channel_layout} defined in
@file{libavutil/channel_layout.h}.
@c man end SYNTAX
@chapter Expression Evaluation
@c man begin EXPRESSION EVALUATION
When evaluating an arithmetic expression, FFmpeg uses an internal
formula evaluator, implemented through the @file{libavutil/eval.h}
interface.
An expression may contain unary, binary operators, constants, and
functions.
Two expressions @var{expr1} and @var{expr2} can be combined to form
another expression "@var{expr1};@var{expr2}".
@var{expr1} and @var{expr2} are evaluated in turn, and the new
expression evaluates to the value of @var{expr2}.
The following binary operators are available: @code{+}, @code{-},
@code{*}, @code{/}, @code{^}.
The following unary operators are available: @code{+}, @code{-}.
The following functions are available:
@table @option
@item abs(x)
Compute absolute value of @var{x}.
@item acos(x)
Compute arccosine of @var{x}.
@item asin(x)
Compute arcsine of @var{x}.
@item atan(x)
Compute arctangent of @var{x}.
@item between(x, min, max)
Return 1 if @var{x} is greater than or equal to @var{min} and lesser than or
equal to @var{max}, 0 otherwise.
@item bitand(x, y)
@item bitor(x, y)
Compute bitwise and/or operation on @var{x} and @var{y}.
The results of the evaluation of @var{x} and @var{y} are converted to
integers before executing the bitwise operation.
Note that both the conversion to integer and the conversion back to
floating point can lose precision. Beware of unexpected results for
large numbers (usually 2^53 and larger).
@item ceil(expr)
Round the value of expression @var{expr} upwards to the nearest
integer. For example, "ceil(1.5)" is "2.0".
@item cos(x)
Compute cosine of @var{x}.
@item cosh(x)
Compute hyperbolic cosine of @var{x}.
@item eq(x, y)
Return 1 if @var{x} and @var{y} are equivalent, 0 otherwise.
@item exp(x)
Compute exponential of @var{x} (with base @code{e}, the Euler's number).
@item floor(expr)
Round the value of expression @var{expr} downwards to the nearest
integer. For example, "floor(-1.5)" is "-2.0".
@item gauss(x)
Compute Gauss function of @var{x}, corresponding to
@code{exp(-x*x/2) / sqrt(2*PI)}.
@item gcd(x, y)
Return the greatest common divisor of @var{x} and @var{y}. If both @var{x} and
@var{y} are 0 or either or both are less than zero then behavior is undefined.
@item gt(x, y)
Return 1 if @var{x} is greater than @var{y}, 0 otherwise.
@item gte(x, y)
Return 1 if @var{x} is greater than or equal to @var{y}, 0 otherwise.
@item hypot(x, y)
This function is similar to the C function with the same name; it returns
"sqrt(@var{x}*@var{x} + @var{y}*@var{y})", the length of the hypotenuse of a
right triangle with sides of length @var{x} and @var{y}, or the distance of the
point (@var{x}, @var{y}) from the origin.
@item if(x, y)
Evaluate @var{x}, and if the result is non-zero return the result of
the evaluation of @var{y}, return 0 otherwise.
@item if(x, y, z)
Evaluate @var{x}, and if the result is non-zero return the evaluation
result of @var{y}, otherwise the evaluation result of @var{z}.
@item ifnot(x, y)
Evaluate @var{x}, and if the result is zero return the result of the
evaluation of @var{y}, return 0 otherwise.
@item ifnot(x, y, z)
Evaluate @var{x}, and if the result is zero return the evaluation
result of @var{y}, otherwise the evaluation result of @var{z}.
@item isinf(x)
Return 1.0 if @var{x} is +/-INFINITY, 0.0 otherwise.
@item isnan(x)
Return 1.0 if @var{x} is NAN, 0.0 otherwise.
@item ld(var)
Allow to load the value of the internal variable with number
@var{var}, which was previously stored with st(@var{var}, @var{expr}).
The function returns the loaded value.
@item log(x)
Compute natural logarithm of @var{x}.
@item lt(x, y)
Return 1 if @var{x} is lesser than @var{y}, 0 otherwise.
@item lte(x, y)
Return 1 if @var{x} is lesser than or equal to @var{y}, 0 otherwise.
@item max(x, y)
Return the maximum between @var{x} and @var{y}.
@item min(x, y)
Return the maximum between @var{x} and @var{y}.
@item mod(x, y)
Compute the remainder of division of @var{x} by @var{y}.
@item not(expr)
Return 1.0 if @var{expr} is zero, 0.0 otherwise.
@item pow(x, y)
Compute the power of @var{x} elevated @var{y}, it is equivalent to
"(@var{x})^(@var{y})".
@item print(t)
@item print(t, l)
Print the value of expression @var{t} with loglevel @var{l}. If
@var{l} is not specified then a default log level is used.
Returns the value of the expression printed.
Prints t with loglevel l
@item random(x)
Return a pseudo random value between 0.0 and 1.0. @var{x} is the index of the
internal variable which will be used to save the seed/state.
@item root(expr, max)
Find an input value for which the function represented by @var{expr}
with argument @var{ld(0)} is 0 in the interval 0..@var{max}.
The expression in @var{expr} must denote a continuous function or the
result is undefined.
@var{ld(0)} is used to represent the function input value, which means
that the given expression will be evaluated multiple times with
various input values that the expression can access through
@code{ld(0)}. When the expression evaluates to 0 then the
corresponding input value will be returned.
@item sin(x)
Compute sine of @var{x}.
@item sinh(x)
Compute hyperbolic sine of @var{x}.
@item sqrt(expr)
Compute the square root of @var{expr}. This is equivalent to
"(@var{expr})^.5".
@item squish(x)
Compute expression @code{1/(1 + exp(4*x))}.
@item st(var, expr)
Allow to store the value of the expression @var{expr} in an internal
variable. @var{var} specifies the number of the variable where to
store the value, and it is a value ranging from 0 to 9. The function
returns the value stored in the internal variable.
Note, Variables are currently not shared between expressions.
@item tan(x)
Compute tangent of @var{x}.
@item tanh(x)
Compute hyperbolic tangent of @var{x}.
@item taylor(expr, x)
@item taylor(expr, x, id)
Evaluate a Taylor series at @var{x}, given an expression representing
the @code{ld(id)}-th derivative of a function at 0.
When the series does not converge the result is undefined.
@var{ld(id)} is used to represent the derivative order in @var{expr},
which means that the given expression will be evaluated multiple times
with various input values that the expression can access through
@code{ld(id)}. If @var{id} is not specified then 0 is assumed.
Note, when you have the derivatives at y instead of 0,
@code{taylor(expr, x-y)} can be used.
@item time(0)
Return the current (wallclock) time in seconds.
@item trunc(expr)
Round the value of expression @var{expr} towards zero to the nearest
integer. For example, "trunc(-1.5)" is "-1.0".
@item while(cond, expr)
Evaluate expression @var{expr} while the expression @var{cond} is
non-zero, and returns the value of the last @var{expr} evaluation, or
NAN if @var{cond} was always false.
@end table
The following constants are available:
@table @option
@item PI
area of the unit disc, approximately 3.14
@item E
exp(1) (Euler's number), approximately 2.718
@item PHI
golden ratio (1+sqrt(5))/2, approximately 1.618
@end table
Assuming that an expression is considered "true" if it has a non-zero
value, note that:
@code{*} works like AND
@code{+} works like OR
For example the construct:
@example
if (A AND B) then C
@end example
is equivalent to:
@example
if(A*B, C)
@end example
In your C code, you can extend the list of unary and binary functions,
and define recognized constants, so that they are available for your
expressions.
The evaluator also recognizes the International System unit prefixes.
If 'i' is appended after the prefix, binary prefixes are used, which
are based on powers of 1024 instead of powers of 1000.
The 'B' postfix multiplies the value by 8, and can be appended after a
unit prefix or used alone. This allows using for example 'KB', 'MiB',
'G' and 'B' as number postfix.
The list of available International System prefixes follows, with
indication of the corresponding powers of 10 and of 2.
@table @option
@item y
10^-24 / 2^-80
@item z
10^-21 / 2^-70
@item a
10^-18 / 2^-60
@item f
10^-15 / 2^-50
@item p
10^-12 / 2^-40
@item n
10^-9 / 2^-30
@item u
10^-6 / 2^-20
@item m
10^-3 / 2^-10
@item c
10^-2
@item d
10^-1
@item h
10^2
@item k
10^3 / 2^10
@item K
10^3 / 2^10
@item M
10^6 / 2^20
@item G
10^9 / 2^30
@item T
10^12 / 2^40
@item P
10^15 / 2^40
@item E
10^18 / 2^50
@item Z
10^21 / 2^60
@item Y
10^24 / 2^70
@end table
@c man end
@chapter OpenCL Options
@c man begin OPENCL OPTIONS
When FFmpeg is configured with @code{--enable-opencl}, it is possible
to set the options for the global OpenCL context.
The list of supported options follows:
@table @option
@item build_options
Set build options used to compile the registered kernels.
See reference "OpenCL Specification Version: 1.2 chapter 5.6.4".
@item platform_idx
Select the index of the platform to run OpenCL code.
The specified index must be one of the indexes in the device list
which can be obtained with @code{av_opencl_get_device_list()}.
@item device_idx
Select the index of the device used to run OpenCL code.
The specifed index must be one of the indexes in the device list which
can be obtained with @code{av_opencl_get_device_list()}.
@end table
@c man end OPENCL OPTIONS

/contrib/sdk/sources/ffmpeg/doc/viterbi.txt
0,0 → 1,109
This is a quick description of the viterbi aka dynamic programing
algorthm.
Its reason for existence is that wikipedia has become very poor on
describing algorithms in a way that makes it useable for understanding
them or anything else actually. It tends now to describe the very same
algorithm under 50 different names and pages with few understandable
by even people who fully understand the algorithm and the theory behind.
Problem description: (that is what it can solve)
assume we have a 2d table, or you could call it a graph or matrix if you
prefer
O O O O O O O
O O O O O O O
O O O O O O O
O O O O O O O
That table has edges connecting points from each column to the next column
and each edge has a score like: (only some edge and scores shown to keep it
readable)
O--5--O-----O-----O-----O-----O
2 / 7 / \ / \ / \ /
\ / \ / \ / \ / \ /
O7-/--O--/--O--/--O--/--O--/--O
\/ \/ 1/ \/ \/ \/ \/ \/ \/ \/
/\ /\ 2\ /\ /\ /\ /\ /\ /\ /\
O3-/--O--/--O--/--O--/--O--/--O
/ \ / \ / \ / \ / \
1 \ 9 \ / \ / \ / \
O--2--O--1--O--5--O--3--O--8--O
Our goal is to find a path from left to right through it which
minimizes the sum of the score of all edges.
(and of course left/right is just a convention here it could be top down too)
Similarly the minimum could be the maximum by just fliping the sign,
Example of a path with scores:
O O O O O O O
>---O. O O .O-2-O O O
5. .7 .
O O-1-O O O 8 O O
.
O O O O O O-1-O---> (sum here is 24)
The viterbi algorthm now solves this simply column by column
For the previous column each point has a best path and a associated
score:
O-----5 O
\
\
O \ 1 O
\/
/\
O / 2 O
/
/
O-----2 O
To move one column forward we just need to find the best path and associated
scores for the next column
here are some edges we could choose from:
O-----5--3--O
\ \8
\ \
O \ 1--9--O
\/ \3
/\ \
O / 2--1--O
/ \2
/ \
O-----2--4--O
Finding the new best paths and scores for each point of our new column is
trivial given we know the previous column best paths and scores:
O-----0-----8
\
\
O \ 0----10
\/
/\
O / 0-----3
/ \
/ \
O 0 4
the viterbi algorthm continues exactly like this column for column until the
end and then just picks the path with the best score (above that would be the
one with score 3)
Author: Michael niedermayer
Copyright LGPL

/contrib/sdk/sources/ffmpeg/Makefile
165,8 → 165,8
check: all alltools examples testprogs fate
#include $(SRC_PATH)/doc/Makefile
#include $(SRC_PATH)/tests/Makefile
include $(SRC_PATH)/doc/Makefile
include $(SRC_PATH)/tests/Makefile
$(sort $(OBJDIRS)):
$(Q)mkdir -p $@

/contrib/sdk/sources/ffmpeg/config.h
1,7 → 1,7
/* Automatically generated by configure - do not modify! */
#ifndef FFMPEG_CONFIG_H
#define FFMPEG_CONFIG_H
#define FFMPEG_CONFIGURATION "--disable-static --enable-shared --disable-network --disable-debug --enable-memalign-hack --enable-gpl --disable-avx --disable-fma4 --disable-programs --extra-cflags=-I/d/kos/kolibri/programs/develop/libraries/newlib/include --disable-pthreads --disable-w32threads --extra-cflags=-U_Win32 --extra-cflags=-U_WIN32 --extra-cflags=-U__MINGW32__ --enable-runtime-cpudetect --disable-encoders --disable-muxers --disable-protocols --enable-protocol=file --disable-devices --disable-postproc --disable-avfilter --disable-hwaccels --disable-doc"
#define FFMPEG_CONFIGURATION "--disable-static --enable-shared --disable-network --disable-debug --enable-memalign-hack --enable-gpl --disable-avx --disable-fma4 --disable-programs --extra-cflags=-I/d/kos/kolibri/programs/develop/libraries/newlib/include --disable-pthreads --disable-w32threads --extra-cflags=-U_Win32 --extra-cflags=-U_WIN32 --extra-cflags=-U__MINGW32__ --enable-runtime-cpudetect --disable-encoders --disable-muxers --disable-protocols --enable-protocol=file --disable-devices --disable-postproc --disable-avfilter --disable-hwaccels"
#define FFMPEG_LICENSE "GPL version 2 or later"
#define FFMPEG_DATADIR "/usr/local/share/ffmpeg"
#define AVCONV_DATADIR "/usr/local/share/ffmpeg"

/contrib/sdk/sources/libdrm/Makefile
1,42 → 1,46
CC=gcc
LD = ld
AR= ar
LIBRARY= libdrm
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -march=i686 -O2 -fomit-frame-pointer
STRIP = $(PREFIX)strip
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --version-script libdrm.ver --image-base=0
LDFLAGS+= --out-implib $(LIBRARY).dll.a
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --version-script libdrm.ver --image-base=0 --out-implib $(LIBRARY).dll.a
ARFLAGS = crs
INCLUDES= -I. -I./include/drm -I../newlib/include
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L../../lib
LIBS:= -ldll -lc.dll
DEFINES=
SOURCES = xf86drm.c \
intel/intel_bufmgr.c \
intel/intel_bufmgr_gem.c
OBJECTS = $(patsubst %.c, %.o, $(SOURCES))
# targets
all:$(LIBRARY).a $(LIBRARY).dll
$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJECTS)
ar cvrs $(LIBRARY).a $(OBJECTS)
mv -f $(LIBRARY).a ../../lib
$(LIBRARY).dll: $(OBJECTS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(OBJECTS) $(LIBS)
$(STRIP) $@
mv -f $@ ../../bin
mv -f $(LIBRARY).dll.a ../../lib

/contrib/sdk/sources/pixman/Makefile
1,20 → 1,17
LIBRARY = pixman-1
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CC = gcc
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -Wall -Winline -fomit-frame-pointer
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0
LDFLAGS+= --out-implib lib$(LIBRARY).dll.a
LD = ld
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --out-implib lib$(LIBRARY).dll.a
ARFLAGS = cvrs
STRIP = $(PREFIX)strip
INCLUDES= -I. -I../newlib/include
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L../../lib
LIBS:= -ldll -lc.dll -lgcc
67,13 → 64,14
ebox:$lib(LIBRARY).a $(LIBRARY).dll
lib$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) $(ARFLAGS) lib$(LIBRARY).a $(OBJECTS)
ar cvrs lib$(LIBRARY).a $(OBJECTS)
mv -f lib$(LIBRARY).a ../../lib
$(LIBRARY).dll: $(LIBRARY).def $(OBJECTS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(LIBRARY).def $(OBJECTS) $(LIBS)
#sed -f ../newlib/cmd1.sed $(LIBRARY).def > mem
#sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
$(STRIP) $@
sed -f ../newlib/cmd1.sed $(LIBRARY).def > mem
sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
mv -f $@ ../../bin
mv -f lib$(LIBRARY).dll.a ../../lib

/contrib/sdk/sources/pixman/mem
0,0 → 1,148
EXPORTS,'EXPORTS',\
_pixman_internal_only_get_implementation,'_pixman_internal_only_get_implementation',\
pixman_add_trapezoids,'pixman_add_trapezoids',\
pixman_add_traps,'pixman_add_traps',\
pixman_add_triangles,'pixman_add_triangles',\
pixman_blt,'pixman_blt',\
pixman_composite_glyphs,'pixman_composite_glyphs',\
pixman_composite_glyphs_no_mask,'pixman_composite_glyphs_no_mask',\
pixman_composite_trapezoids,'pixman_composite_trapezoids',\
pixman_composite_triangles,'pixman_composite_triangles',\
pixman_compute_composite_region,'pixman_compute_composite_region',\
pixman_disable_out_of_bounds_workaround,'pixman_disable_out_of_bounds_workaround',\
pixman_edge_init,'pixman_edge_init',\
pixman_edge_step,'pixman_edge_step',\
pixman_f_transform_bounds,'pixman_f_transform_bounds',\
pixman_f_transform_from_pixman_transform,'pixman_f_transform_from_pixman_transform',\
pixman_f_transform_init_identity,'pixman_f_transform_init_identity',\
pixman_f_transform_init_rotate,'pixman_f_transform_init_rotate',\
pixman_f_transform_init_scale,'pixman_f_transform_init_scale',\
pixman_f_transform_init_translate,'pixman_f_transform_init_translate',\
pixman_f_transform_invert,'pixman_f_transform_invert',\
pixman_f_transform_multiply,'pixman_f_transform_multiply',\
pixman_f_transform_point,'pixman_f_transform_point',\
pixman_f_transform_point_3d,'pixman_f_transform_point_3d',\
pixman_f_transform_rotate,'pixman_f_transform_rotate',\
pixman_f_transform_scale,'pixman_f_transform_scale',\
pixman_f_transform_translate,'pixman_f_transform_translate',\
pixman_fill,'pixman_fill',\
pixman_filter_create_separable_convolution,'pixman_filter_create_separable_convolution',\
pixman_format_supported_destination,'pixman_format_supported_destination',\
pixman_format_supported_source,'pixman_format_supported_source',\
pixman_glyph_cache_create,'pixman_glyph_cache_create',\
pixman_glyph_cache_destroy,'pixman_glyph_cache_destroy',\
pixman_glyph_cache_freeze,'pixman_glyph_cache_freeze',\
pixman_glyph_cache_insert,'pixman_glyph_cache_insert',\
pixman_glyph_cache_lookup,'pixman_glyph_cache_lookup',\
pixman_glyph_cache_remove,'pixman_glyph_cache_remove',\
pixman_glyph_cache_thaw,'pixman_glyph_cache_thaw',\
pixman_glyph_get_extents,'pixman_glyph_get_extents',\
pixman_glyph_get_mask_format,'pixman_glyph_get_mask_format',\
pixman_image_composite,'pixman_image_composite',\
pixman_image_composite32,'pixman_image_composite32',\
pixman_image_create_bits,'pixman_image_create_bits',\
pixman_image_create_bits_no_clear,'pixman_image_create_bits_no_clear',\
pixman_image_create_conical_gradient,'pixman_image_create_conical_gradient',\
pixman_image_create_linear_gradient,'pixman_image_create_linear_gradient',\
pixman_image_create_radial_gradient,'pixman_image_create_radial_gradient',\
pixman_image_create_solid_fill,'pixman_image_create_solid_fill',\
pixman_image_fill_boxes,'pixman_image_fill_boxes',\
pixman_image_fill_rectangles,'pixman_image_fill_rectangles',\
pixman_image_get_component_alpha,'pixman_image_get_component_alpha',\
pixman_image_get_data,'pixman_image_get_data',\
pixman_image_get_depth,'pixman_image_get_depth',\
pixman_image_get_destroy_data,'pixman_image_get_destroy_data',\
pixman_image_get_format,'pixman_image_get_format',\
pixman_image_get_height,'pixman_image_get_height',\
pixman_image_get_stride,'pixman_image_get_stride',\
pixman_image_get_width,'pixman_image_get_width',\
pixman_image_ref,'pixman_image_ref',\
pixman_image_set_accessors,'pixman_image_set_accessors',\
pixman_image_set_alpha_map,'pixman_image_set_alpha_map',\
pixman_image_set_clip_region,'pixman_image_set_clip_region',\
pixman_image_set_clip_region32,'pixman_image_set_clip_region32',\
pixman_image_set_component_alpha,'pixman_image_set_component_alpha',\
pixman_image_set_destroy_function,'pixman_image_set_destroy_function',\
pixman_image_set_filter,'pixman_image_set_filter',\
pixman_image_set_has_client_clip,'pixman_image_set_has_client_clip',\
pixman_image_set_indexed,'pixman_image_set_indexed',\
pixman_image_set_repeat,'pixman_image_set_repeat',\
pixman_image_set_source_clipping,'pixman_image_set_source_clipping',\
pixman_image_set_transform,'pixman_image_set_transform',\
pixman_image_unref,'pixman_image_unref',\
pixman_line_fixed_edge_init,'pixman_line_fixed_edge_init',\
pixman_rasterize_edges,'pixman_rasterize_edges',\
pixman_rasterize_trapezoid,'pixman_rasterize_trapezoid',\
pixman_region32_clear,'pixman_region32_clear',\
pixman_region32_contains_point,'pixman_region32_contains_point',\
pixman_region32_contains_rectangle,'pixman_region32_contains_rectangle',\
pixman_region32_copy,'pixman_region32_copy',\
pixman_region32_equal,'pixman_region32_equal',\
pixman_region32_extents,'pixman_region32_extents',\
pixman_region32_fini,'pixman_region32_fini',\
pixman_region32_init,'pixman_region32_init',\
pixman_region32_init_from_image,'pixman_region32_init_from_image',\
pixman_region32_init_rect,'pixman_region32_init_rect',\
pixman_region32_init_rects,'pixman_region32_init_rects',\
pixman_region32_init_with_extents,'pixman_region32_init_with_extents',\
pixman_region32_intersect,'pixman_region32_intersect',\
pixman_region32_intersect_rect,'pixman_region32_intersect_rect',\
pixman_region32_inverse,'pixman_region32_inverse',\
pixman_region32_n_rects,'pixman_region32_n_rects',\
pixman_region32_not_empty,'pixman_region32_not_empty',\
pixman_region32_rectangles,'pixman_region32_rectangles',\
pixman_region32_reset,'pixman_region32_reset',\
pixman_region32_selfcheck,'pixman_region32_selfcheck',\
pixman_region32_subtract,'pixman_region32_subtract',\
pixman_region32_translate,'pixman_region32_translate',\
pixman_region32_union,'pixman_region32_union',\
pixman_region32_union_rect,'pixman_region32_union_rect',\
pixman_region_clear,'pixman_region_clear',\
pixman_region_contains_point,'pixman_region_contains_point',\
pixman_region_contains_rectangle,'pixman_region_contains_rectangle',\
pixman_region_copy,'pixman_region_copy',\
pixman_region_equal,'pixman_region_equal',\
pixman_region_extents,'pixman_region_extents',\
pixman_region_fini,'pixman_region_fini',\
pixman_region_init,'pixman_region_init',\
pixman_region_init_from_image,'pixman_region_init_from_image',\
pixman_region_init_rect,'pixman_region_init_rect',\
pixman_region_init_rects,'pixman_region_init_rects',\
pixman_region_init_with_extents,'pixman_region_init_with_extents',\
pixman_region_intersect,'pixman_region_intersect',\
pixman_region_intersect_rect,'pixman_region_intersect_rect',\
pixman_region_inverse,'pixman_region_inverse',\
pixman_region_n_rects,'pixman_region_n_rects',\
pixman_region_not_empty,'pixman_region_not_empty',\
pixman_region_rectangles,'pixman_region_rectangles',\
pixman_region_reset,'pixman_region_reset',\
pixman_region_selfcheck,'pixman_region_selfcheck',\
pixman_region_set_static_pointers,'pixman_region_set_static_pointers',\
pixman_region_subtract,'pixman_region_subtract',\
pixman_region_translate,'pixman_region_translate',\
pixman_region_union,'pixman_region_union',\
pixman_region_union_rect,'pixman_region_union_rect',\
pixman_sample_ceil_y,'pixman_sample_ceil_y',\
pixman_sample_floor_y,'pixman_sample_floor_y',\
pixman_transform_bounds,'pixman_transform_bounds',\
pixman_transform_from_pixman_f_transform,'pixman_transform_from_pixman_f_transform',\
pixman_transform_init_identity,'pixman_transform_init_identity',\
pixman_transform_init_rotate,'pixman_transform_init_rotate',\
pixman_transform_init_scale,'pixman_transform_init_scale',\
pixman_transform_init_translate,'pixman_transform_init_translate',\
pixman_transform_invert,'pixman_transform_invert',\
pixman_transform_is_identity,'pixman_transform_is_identity',\
pixman_transform_is_int_translate,'pixman_transform_is_int_translate',\
pixman_transform_is_inverse,'pixman_transform_is_inverse',\
pixman_transform_is_scale,'pixman_transform_is_scale',\
pixman_transform_multiply,'pixman_transform_multiply',\
pixman_transform_point,'pixman_transform_point',\
pixman_transform_point_31_16,'pixman_transform_point_31_16',\
pixman_transform_point_31_16_3d,'pixman_transform_point_31_16_3d',\
pixman_transform_point_31_16_affine,'pixman_transform_point_31_16_affine',\
pixman_transform_point_3d,'pixman_transform_point_3d',\
pixman_transform_rotate,'pixman_transform_rotate',\
pixman_transform_scale,'pixman_transform_scale',\
pixman_transform_translate,'pixman_transform_translate',\
pixman_version,'pixman_version',\
pixman_version_string,'pixman_version_string',\

/contrib/sdk/sources/pixman/pixman-1.inc
0,0 → 1,148
EXPORTS,'EXPORTS',\
_pixman_internal_only_get_implementation,'_pixman_internal_only_get_implementation',\
pixman_add_trapezoids,'pixman_add_trapezoids',\
pixman_add_traps,'pixman_add_traps',\
pixman_add_triangles,'pixman_add_triangles',\
pixman_blt,'pixman_blt',\
pixman_composite_glyphs,'pixman_composite_glyphs',\
pixman_composite_glyphs_no_mask,'pixman_composite_glyphs_no_mask',\
pixman_composite_trapezoids,'pixman_composite_trapezoids',\
pixman_composite_triangles,'pixman_composite_triangles',\
pixman_compute_composite_region,'pixman_compute_composite_region',\
pixman_disable_out_of_bounds_workaround,'pixman_disable_out_of_bounds_workaround',\
pixman_edge_init,'pixman_edge_init',\
pixman_edge_step,'pixman_edge_step',\
pixman_f_transform_bounds,'pixman_f_transform_bounds',\
pixman_f_transform_from_pixman_transform,'pixman_f_transform_from_pixman_transform',\
pixman_f_transform_init_identity,'pixman_f_transform_init_identity',\
pixman_f_transform_init_rotate,'pixman_f_transform_init_rotate',\
pixman_f_transform_init_scale,'pixman_f_transform_init_scale',\
pixman_f_transform_init_translate,'pixman_f_transform_init_translate',\
pixman_f_transform_invert,'pixman_f_transform_invert',\
pixman_f_transform_multiply,'pixman_f_transform_multiply',\
pixman_f_transform_point,'pixman_f_transform_point',\
pixman_f_transform_point_3d,'pixman_f_transform_point_3d',\
pixman_f_transform_rotate,'pixman_f_transform_rotate',\
pixman_f_transform_scale,'pixman_f_transform_scale',\
pixman_f_transform_translate,'pixman_f_transform_translate',\
pixman_fill,'pixman_fill',\
pixman_filter_create_separable_convolution,'pixman_filter_create_separable_convolution',\
pixman_format_supported_destination,'pixman_format_supported_destination',\
pixman_format_supported_source,'pixman_format_supported_source',\
pixman_glyph_cache_create,'pixman_glyph_cache_create',\
pixman_glyph_cache_destroy,'pixman_glyph_cache_destroy',\
pixman_glyph_cache_freeze,'pixman_glyph_cache_freeze',\
pixman_glyph_cache_insert,'pixman_glyph_cache_insert',\
pixman_glyph_cache_lookup,'pixman_glyph_cache_lookup',\
pixman_glyph_cache_remove,'pixman_glyph_cache_remove',\
pixman_glyph_cache_thaw,'pixman_glyph_cache_thaw',\
pixman_glyph_get_extents,'pixman_glyph_get_extents',\
pixman_glyph_get_mask_format,'pixman_glyph_get_mask_format',\
pixman_image_composite,'pixman_image_composite',\
pixman_image_composite32,'pixman_image_composite32',\
pixman_image_create_bits,'pixman_image_create_bits',\
pixman_image_create_bits_no_clear,'pixman_image_create_bits_no_clear',\
pixman_image_create_conical_gradient,'pixman_image_create_conical_gradient',\
pixman_image_create_linear_gradient,'pixman_image_create_linear_gradient',\
pixman_image_create_radial_gradient,'pixman_image_create_radial_gradient',\
pixman_image_create_solid_fill,'pixman_image_create_solid_fill',\
pixman_image_fill_boxes,'pixman_image_fill_boxes',\
pixman_image_fill_rectangles,'pixman_image_fill_rectangles',\
pixman_image_get_component_alpha,'pixman_image_get_component_alpha',\
pixman_image_get_data,'pixman_image_get_data',\
pixman_image_get_depth,'pixman_image_get_depth',\
pixman_image_get_destroy_data,'pixman_image_get_destroy_data',\
pixman_image_get_format,'pixman_image_get_format',\
pixman_image_get_height,'pixman_image_get_height',\
pixman_image_get_stride,'pixman_image_get_stride',\
pixman_image_get_width,'pixman_image_get_width',\
pixman_image_ref,'pixman_image_ref',\
pixman_image_set_accessors,'pixman_image_set_accessors',\
pixman_image_set_alpha_map,'pixman_image_set_alpha_map',\
pixman_image_set_clip_region,'pixman_image_set_clip_region',\
pixman_image_set_clip_region32,'pixman_image_set_clip_region32',\
pixman_image_set_component_alpha,'pixman_image_set_component_alpha',\
pixman_image_set_destroy_function,'pixman_image_set_destroy_function',\
pixman_image_set_filter,'pixman_image_set_filter',\
pixman_image_set_has_client_clip,'pixman_image_set_has_client_clip',\
pixman_image_set_indexed,'pixman_image_set_indexed',\
pixman_image_set_repeat,'pixman_image_set_repeat',\
pixman_image_set_source_clipping,'pixman_image_set_source_clipping',\
pixman_image_set_transform,'pixman_image_set_transform',\
pixman_image_unref,'pixman_image_unref',\
pixman_line_fixed_edge_init,'pixman_line_fixed_edge_init',\
pixman_rasterize_edges,'pixman_rasterize_edges',\
pixman_rasterize_trapezoid,'pixman_rasterize_trapezoid',\
pixman_region32_clear,'pixman_region32_clear',\
pixman_region32_contains_point,'pixman_region32_contains_point',\
pixman_region32_contains_rectangle,'pixman_region32_contains_rectangle',\
pixman_region32_copy,'pixman_region32_copy',\
pixman_region32_equal,'pixman_region32_equal',\
pixman_region32_extents,'pixman_region32_extents',\
pixman_region32_fini,'pixman_region32_fini',\
pixman_region32_init,'pixman_region32_init',\
pixman_region32_init_from_image,'pixman_region32_init_from_image',\
pixman_region32_init_rect,'pixman_region32_init_rect',\
pixman_region32_init_rects,'pixman_region32_init_rects',\
pixman_region32_init_with_extents,'pixman_region32_init_with_extents',\
pixman_region32_intersect,'pixman_region32_intersect',\
pixman_region32_intersect_rect,'pixman_region32_intersect_rect',\
pixman_region32_inverse,'pixman_region32_inverse',\
pixman_region32_n_rects,'pixman_region32_n_rects',\
pixman_region32_not_empty,'pixman_region32_not_empty',\
pixman_region32_rectangles,'pixman_region32_rectangles',\
pixman_region32_reset,'pixman_region32_reset',\
pixman_region32_selfcheck,'pixman_region32_selfcheck',\
pixman_region32_subtract,'pixman_region32_subtract',\
pixman_region32_translate,'pixman_region32_translate',\
pixman_region32_union,'pixman_region32_union',\
pixman_region32_union_rect,'pixman_region32_union_rect',\
pixman_region_clear,'pixman_region_clear',\
pixman_region_contains_point,'pixman_region_contains_point',\
pixman_region_contains_rectangle,'pixman_region_contains_rectangle',\
pixman_region_copy,'pixman_region_copy',\
pixman_region_equal,'pixman_region_equal',\
pixman_region_extents,'pixman_region_extents',\
pixman_region_fini,'pixman_region_fini',\
pixman_region_init,'pixman_region_init',\
pixman_region_init_from_image,'pixman_region_init_from_image',\
pixman_region_init_rect,'pixman_region_init_rect',\
pixman_region_init_rects,'pixman_region_init_rects',\
pixman_region_init_with_extents,'pixman_region_init_with_extents',\
pixman_region_intersect,'pixman_region_intersect',\
pixman_region_intersect_rect,'pixman_region_intersect_rect',\
pixman_region_inverse,'pixman_region_inverse',\
pixman_region_n_rects,'pixman_region_n_rects',\
pixman_region_not_empty,'pixman_region_not_empty',\
pixman_region_rectangles,'pixman_region_rectangles',\
pixman_region_reset,'pixman_region_reset',\
pixman_region_selfcheck,'pixman_region_selfcheck',\
pixman_region_set_static_pointers,'pixman_region_set_static_pointers',\
pixman_region_subtract,'pixman_region_subtract',\
pixman_region_translate,'pixman_region_translate',\
pixman_region_union,'pixman_region_union',\
pixman_region_union_rect,'pixman_region_union_rect',\
pixman_sample_ceil_y,'pixman_sample_ceil_y',\
pixman_sample_floor_y,'pixman_sample_floor_y',\
pixman_transform_bounds,'pixman_transform_bounds',\
pixman_transform_from_pixman_f_transform,'pixman_transform_from_pixman_f_transform',\
pixman_transform_init_identity,'pixman_transform_init_identity',\
pixman_transform_init_rotate,'pixman_transform_init_rotate',\
pixman_transform_init_scale,'pixman_transform_init_scale',\
pixman_transform_init_translate,'pixman_transform_init_translate',\
pixman_transform_invert,'pixman_transform_invert',\
pixman_transform_is_identity,'pixman_transform_is_identity',\
pixman_transform_is_int_translate,'pixman_transform_is_int_translate',\
pixman_transform_is_inverse,'pixman_transform_is_inverse',\
pixman_transform_is_scale,'pixman_transform_is_scale',\
pixman_transform_multiply,'pixman_transform_multiply',\
pixman_transform_point,'pixman_transform_point',\
pixman_transform_point_31_16,'pixman_transform_point_31_16',\
pixman_transform_point_31_16_3d,'pixman_transform_point_31_16_3d',\
pixman_transform_point_31_16_affine,'pixman_transform_point_31_16_affine',\
pixman_transform_point_3d,'pixman_transform_point_3d',\
pixman_transform_rotate,'pixman_transform_rotate',\
pixman_transform_scale,'pixman_transform_scale',\
pixman_transform_translate,'pixman_transform_translate',\
pixman_version,'pixman_version',\
pixman_version_string,'pixman_version_string',\

/contrib/sdk/sources/zlib/Makefile
11,20 → 11,21
SHAREDLIB = libz.dll
IMPLIB = libz.dll.a
CC = kos32-gcc
LD = kos32-ld
AR = kos32-ar
STRIP = kos32-strip
PREFIX =
CC = $(PREFIX)gcc
CFLAGS = $(LOC) -U_Win32 -U_WIN32 -U__MINGW32__ -O2 -Wall -fomit-frame-pointer
AS = $(CC)
ASFLAGS = $(LOC) -Wall
LD = ld
LDFLAGS = $(LOC)
AR = $(PREFIX)ar
ARFLAGS = rcs
STRIP = $(PREFIX)strip
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --out-implib $(IMPLIB)
INCLUDES= -I../newlib/include
60,8 → 61,8
$(SHAREDLIB): zlib.def $(OBJS) $(OBJA) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ zlib.def $(OBJS) $(OBJA) $(LIBS)
$(STRIP) $@
#sed -f ../newlib/cmd1.sed zlib.def > mem
#sed -f ../newlib/cmd2.sed mem >zlib.inc
sed -f ../newlib/cmd1.sed zlib.def > mem
sed -f ../newlib/cmd2.sed mem >zlib.inc
mv -f libz.dll ../../bin
mv -f libz.dll.a ../../lib

/contrib/sdk/sources/zlib/mem
0,0 → 1,74
LIBRARY,'LIBRARY',\ zlib.dll
;,';',\ zlib data compression library
EXPORTS,'EXPORTS',\
;,';',\ basic functions
zlibVersion,'zlibVersion',\
deflate,'deflate',\
deflateEnd,'deflateEnd',\
inflate,'inflate',\
inflateEnd,'inflateEnd',\
;,';',\ advanced functions
deflateSetDictionary,'deflateSetDictionary',\
deflateCopy,'deflateCopy',\
deflateReset,'deflateReset',\
deflateParams,'deflateParams',\
deflateTune,'deflateTune',\
deflateBound,'deflateBound',\
deflatePrime,'deflatePrime',\
deflateSetHeader,'deflateSetHeader',\
inflateSetDictionary,'inflateSetDictionary',\
inflateSync,'inflateSync',\
inflateCopy,'inflateCopy',\
inflateReset,'inflateReset',\
inflateReset2,'inflateReset2',\
inflatePrime,'inflatePrime',\
inflateMark,'inflateMark',\
inflateGetHeader,'inflateGetHeader',\
inflateBack,'inflateBack',\
inflateBackEnd,'inflateBackEnd',\
zlibCompileFlags,'zlibCompileFlags',\
;,';',\ utility functions
compress,'compress',\
compress2,'compress2',\
compressBound,'compressBound',\
uncompress,'uncompress',\
gzopen,'gzopen',\
gzdopen,'gzdopen',\
gzbuffer,'gzbuffer',\
gzsetparams,'gzsetparams',\
gzread,'gzread',\
gzwrite,'gzwrite',\
gzprintf,'gzprintf',\
gzputs,'gzputs',\
gzgets,'gzgets',\
gzputc,'gzputc',\
gzgetc,'gzgetc',\
gzungetc,'gzungetc',\
gzflush,'gzflush',\
gzseek,'gzseek',\
gzrewind,'gzrewind',\
gztell,'gztell',\
gzoffset,'gzoffset',\
gzeof,'gzeof',\
gzdirect,'gzdirect',\
gzclose,'gzclose',\
gzclose_r,'gzclose_r',\
gzclose_w,'gzclose_w',\
gzerror,'gzerror',\
gzclearerr,'gzclearerr',\
;,';',\ checksum functions
adler32,'adler32',\
crc32,'crc32',\
adler32_combine,'adler32_combine',\
crc32_combine,'crc32_combine',\
;,';',\ various hacks, don't look :)
deflateInit_,'deflateInit_',\
deflateInit2_,'deflateInit2_',\
inflateInit_,'inflateInit_',\
inflateInit2_,'inflateInit2_',\
inflateBackInit_,'inflateBackInit_',\
zError,'zError',\
inflateSyncPoint,'inflateSyncPoint',\
get_crc_table,'get_crc_table',\
inflateUndermine,'inflateUndermine',\

/contrib/sdk/sources/expat/Makefile
1,13 → 1,11
CC=gcc
LD= ld
AR= ar
LIBRARY= libexpat
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
ARFLAGS = crs
INCLUDES= -I. -I../newlib/include
DEFS = -DHAVE_EXPAT_CONFIG_H
28,7 → 26,7
all:$(LIBRARY).a
$(LIBRARY).a: $(OBJS) Makefile
$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJS)
ar cvrs $(LIBRARY).a $(OBJS)
mv -f $(LIBRARY).a ../../lib
%.o : %.c Makefile

/contrib/sdk/sources/newlib/crt/assert.c
0,0 → 1,74
/*
FUNCTION
<<assert>>---macro for debugging diagnostics
INDEX
assert
ANSI_SYNOPSIS
#include <assert.h>
void assert(int <[expression]>);
DESCRIPTION
Use this macro to embed debuggging diagnostic statements in
your programs. The argument <[expression]> should be an
expression which evaluates to true (nonzero) when your program
is working as you intended.
When <[expression]> evaluates to false (zero), <<assert>>
calls <<abort>>, after first printing a message showing what
failed and where:
. Assertion failed: <[expression]>, file <[filename]>, line <[lineno]>, function: <[func]>
If the name of the current function is not known (for example,
when using a C89 compiler that does not understand __func__),
the function location is omitted.
The macro is defined to permit you to turn off all uses of
<<assert>> at compile time by defining <<NDEBUG>> as a
preprocessor variable. If you do this, the <<assert>> macro
expands to
. (void(0))
RETURNS
<<assert>> does not return a value.
PORTABILITY
The <<assert>> macro is required by ANSI, as is the behavior
when <<NDEBUG>> is defined.
Supporting OS subroutines required (only if enabled): <<close>>, <<fstat>>,
<<getpid>>, <<isatty>>, <<kill>>, <<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
/* func can be NULL, in which case no function information is given. */
void
_DEFUN (__assert_func, (file, line, func, failedexpr),
const char *file _AND
int line _AND
const char *func _AND
const char *failedexpr)
{
fiprintf(stderr,
"assertion \"%s\" failed: file \"%s\", line %d%s%s\n",
failedexpr, file, line,
func ? ", function: " : "", func ? func : "");
abort();
/* NOTREACHED */
}
void
_DEFUN (_assert, (file, line, failedexpr),
const char *file _AND
int line _AND
const char *failedexpr)
{
__assert_func (file, line, NULL, failedexpr);
/* NOTREACHED */
}

/contrib/sdk/sources/newlib/crt/crt3.c
18,7 → 18,7
#include <string.h>
#include <stdio.h>
/*
typedef void (*ctp)();
static void __do_global_ctors ()
{
32,10 → 32,9
c++;
}
}
*/
void *load_libc();
//void __main (){};
void __main (){};
void* get_entry_point(void *raw);

/contrib/sdk/sources/newlib/crt/emutls.c
26,6 → 26,7
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <errno.h>
#include <gthr.h>

/contrib/sdk/sources/newlib/crt/pseudo-reloc.c
19,6 → 19,7
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <memory.h>
extern char __RUNTIME_PSEUDO_RELOC_LIST__;
extern char __RUNTIME_PSEUDO_RELOC_LIST_END__;

/contrib/sdk/sources/newlib/Makefile.ebox
374,7 → 374,7
$(NAME).dll: $(LIB_OBJS) $(SRC_DEP) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(LIB_OBJS) --version-script libc.ver
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(LIB_OBJS) -lgcc --version-script libc.ver
sed -e "s/ @[^ ]*//" libc.orig.def > libc.def
sed -f cmd2.sed libc.def > mem
sed -f newlib.sed mem > libc.inc

/contrib/sdk/sources/newlib/Makefile
1,14 → 1,11
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
CC = gcc
AR = ar rc
LD = ld
CFLAGS = -c -O2 -fomit-frame-pointer -DBUILD_DLL
LDFLAGS = -shared -s -T libcdll.lds --out-implib libc.dll.a --image-base 0
#LDFLAGS+= --output-def libc.orig.def
ARFLAGS = crs
LDFLAGS = -nostdlib -shared -s -T libcdll.lds --output-def libc.orig.def --out-implib libc.dll.a --image-base 0
LIBC_TOPDIR = .
LIBC_INCLUDES = $(LIBC_TOPDIR)/include
18,7 → 15,7
INCLUDES:= -I $(LIBC_INCLUDES)
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L ../../lib
STATIC_SRCS:= \
crt/start.S \
57,6 → 54,7
crt/thread.S \
crt/tls.S \
crt/setjmp.S \
crt/assert.c \
crt/cpu_features.c \
ctype/ctype_.c \
ctype/isascii.c \
141,8 → 139,6
__call_atexit.c \
abort.c \
abs.c \
assert.c \
atexit.c \
atof.c \
atoi.c \
atol.c \
379,9 → 375,9
$(NAME).dll: $(LIB_OBJS) $(SRC_DEP) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(LIB_OBJS) -lgcc --version-script libc.ver
#sed -e "s/ @[^ ]*//" libc.orig.def > libc.def
#sed -f cmd2.sed libc.def > mem
#sed -f newlib.sed mem > libc.inc
sed -e "s/ @[^ ]*//" libc.orig.def > libc.def
sed -f cmd2.sed libc.def > mem
sed -f newlib.sed mem > libc.inc
install: libc.dll libc.dll.a libapp.a libdll.a
mv -f libc.dll ../../bin
390,16 → 386,16
mv -f libdll.a ../../lib
libapp.a: $(LIBCRT_OBJS) Makefile
$(AR) $(ARFLAGS) libapp.a $(LIBCRT_OBJS)
$(AR) libapp.a $(LIBCRT_OBJS)
libdll.a: $(LIBDLL_OBJS) Makefile
$(AR) $(ARFLAGS) libdll.a $(LIBDLL_OBJS)
$(AR) libdll.a $(LIBDLL_OBJS)
static: $(NAME).a
$(NAME).a: $(LIB_OBJS) $(SRC_DEP) Makefile
$(AR) $(ARFLAGS) $(NAME).a $(LIB_OBJS)
$(AR) $(NAME).a $(LIB_OBJS)

/contrib/sdk/sources/newlib/libc.def
2,7 → 2,6
_Balloc
_Bfree
_Exit DATA
__assert
__assert_func
__ctype_ptr__ DATA
__emutls_get_address
14,6 → 13,7
__signbitf
__srget_r
__swbuf_r
_assert
_atoi_r
_atol_r
_buf_findstr
171,7 → 171,6
atanf
atanh
atanhf
atexit
atof
atoi
atol

/contrib/sdk/sources/newlib/libc.inc
0,0 → 1,508
_EXPORTS,'EXPORTS',\
__Balloc,'_Balloc',\
__Bfree,'_Bfree',\
__Exit,'_Exit',\
___assert_func,'__assert_func',\
___ctype_ptr__,'__ctype_ptr__',\
___emutls_get_address,'__emutls_get_address',\
___errno,'__errno',\
___fpclassifyd,'__fpclassifyd',\
___fpclassifyf,'__fpclassifyf',\
___mutex_lock,'__mutex_lock',\
___signbitd,'__signbitd',\
___signbitf,'__signbitf',\
___srget_r,'__srget_r',\
___swbuf_r,'__swbuf_r',\
__assert,'_assert',\
__atoi_r,'_atoi_r',\
__atol_r,'_atol_r',\
__buf_findstr,'_buf_findstr',\
__calloc_r,'_calloc_r',\
__cleanup,'_cleanup',\
__cleanup_r,'_cleanup_r',\
__close_r,'_close_r',\
__ctype_,'_ctype_',\
__daylight,'_daylight',\
__diprintf_r,'_diprintf_r',\
__dprintf_r,'_dprintf_r',\
__dtoa_r,'_dtoa_r',\
__exit,'_exit',\
__f_atan2,'_f_atan2',\
__f_atan2f,'_f_atan2f',\
__f_exp,'_f_exp',\
__f_expf,'_f_expf',\
__f_frexp,'_f_frexp',\
__f_frexpf,'_f_frexpf',\
__f_ldexp,'_f_ldexp',\
__f_ldexpf,'_f_ldexpf',\
__f_llrint,'_f_llrint',\
__f_llrintf,'_f_llrintf',\
__f_llrintl,'_f_llrintl',\
__f_log,'_f_log',\
__f_log10,'_f_log10',\
__f_log10f,'_f_log10f',\
__f_logf,'_f_logf',\
__f_lrint,'_f_lrint',\
__f_lrintf,'_f_lrintf',\
__f_lrintl,'_f_lrintl',\
__f_pow,'_f_pow',\
__f_powf,'_f_powf',\
__f_rint,'_f_rint',\
__f_rintf,'_f_rintf',\
__f_rintl,'_f_rintl',\
__f_tan,'_f_tan',\
__f_tanf,'_f_tanf',\
__fclose_r,'_fclose_r',\
__fdopen_r,'_fdopen_r',\
__fflush_r,'_fflush_r',\
__fgetc_r,'_fgetc_r',\
__fgets_r,'_fgets_r',\
__findenv,'_findenv',\
__fiprintf_r,'_fiprintf_r',\
__fiscanf_r,'_fiscanf_r',\
__fopen_r,'_fopen_r',\
__fprintf_r,'_fprintf_r',\
__fputc_r,'_fputc_r',\
__fputs_r,'_fputs_r',\
__fputwc_r,'_fputwc_r',\
__fread_r,'_fread_r',\
__free_r,'_free_r',\
__freopen_r,'_freopen_r',\
__fscanf_r,'_fscanf_r',\
__fseek_r,'_fseek_r',\
__fseeko_r,'_fseeko_r',\
__fstat_r,'_fstat_r',\
__ftell_r,'_ftell_r',\
__ftello_r,'_ftello_r',\
__fwalk,'_fwalk',\
__fwalk_reent,'_fwalk_reent',\
__fwrite_r,'_fwrite_r',\
__gettimeofday,'_gettimeofday',\
__gettimeofday_r,'_gettimeofday_r',\
__global_impure_ptr,'_global_impure_ptr',\
__grow_handles,'_grow_handles',\
__init_signal,'_init_signal',\
__init_signal_r,'_init_signal_r',\
__isatty,'_isatty',\
__isatty_r,'_isatty_r',\
__kill_r,'_kill_r',\
__localeconv_r,'_localeconv_r',\
__lseek_r,'_lseek_r',\
__malloc_r,'_malloc_r',\
__mbrtowc_r,'_mbrtowc_r',\
__mbtowc_r,'_mbtowc_r',\
__mktm_r,'_mktm_r',\
__mprec_log10,'_mprec_log10',\
__open_r,'_open_r',\
__printf_r,'_printf_r',\
__putc_r,'_putc_r',\
__putchar_r,'_putchar_r',\
__puts_r,'_puts_r',\
__raise_r,'_raise_r',\
__read,'_read',\
__read_r,'_read_r',\
__realloc_r,'_realloc_r',\
__remove_r,'_remove_r',\
__rename_r,'_rename_r',\
__seed48_r,'_seed48_r',\
__setlocale_r,'_setlocale_r',\
__sfread_r,'_sfread_r',\
__signal_r,'_signal_r',\
__siprintf_r,'_siprintf_r',\
__sniprintf_r,'_sniprintf_r',\
__snprintf_r,'_snprintf_r',\
__sprintf_r,'_sprintf_r',\
__srand48_r,'_srand48_r',\
__sscanf_r,'_sscanf_r',\
__strdup_r,'_strdup_r',\
__strerror_r,'_strerror_r',\
__strndup_r,'_strndup_r',\
__strtod_r,'_strtod_r',\
__strtol_r,'_strtol_r',\
__strtoll_r,'_strtoll_r',\
__strtoul_r,'_strtoul_r',\
__strtoull_r,'_strtoull_r',\
__sungetc_r,'_sungetc_r',\
__svfiprintf_r,'_svfiprintf_r',\
__svfprintf_r,'_svfprintf_r',\
__system_r,'_system_r',\
__tempnam_r,'_tempnam_r',\
__times_r,'_times_r',\
__timezone,'_timezone',\
__tls_map,'_tls_map',\
__tmpfile_r,'_tmpfile_r',\
__tmpnam_r,'_tmpnam_r',\
__towctrans_r,'_towctrans_r',\
__tzname,'_tzname',\
__ungetc_r,'_ungetc_r',\
__user_strerror,'_user_strerror',\
__vasniprintf_r,'_vasniprintf_r',\
__vasnprintf_r,'_vasnprintf_r',\
__vdiprintf_r,'_vdiprintf_r',\
__vdprintf_r,'_vdprintf_r',\
__vfiprintf_r,'_vfiprintf_r',\
__vfiscanf_r,'_vfiscanf_r',\
__vfprintf_r,'_vfprintf_r',\
__vfscanf_r,'_vfscanf_r',\
__vscanf_r,'_vscanf_r',\
__vsnprintf_r,'_vsnprintf_r',\
__vsprintf_r,'_vsprintf_r',\
__vsscanf_r,'_vsscanf_r',\
__wcrtomb_r,'_wcrtomb_r',\
__wctomb_r,'_wctomb_r',\
__wctrans_r,'_wctrans_r',\
__wctype_r,'_wctype_r',\
__write_r,'_write_r',\
_abort,'abort',\
_abs,'abs',\
_acos,'acos',\
_acosf,'acosf',\
_acosh,'acosh',\
_acoshf,'acoshf',\
_asctime,'asctime',\
_asctime_r,'asctime_r',\
_asin,'asin',\
_asinf,'asinf',\
_asinh,'asinh',\
_asinhf,'asinhf',\
_atan,'atan',\
_atan2,'atan2',\
_atan2f,'atan2f',\
_atanf,'atanf',\
_atanh,'atanh',\
_atanhf,'atanhf',\
_atof,'atof',\
_atoi,'atoi',\
_atol,'atol',\
_bsearch,'bsearch',\
_calloc,'calloc',\
_cbrt,'cbrt',\
_cbrtf,'cbrtf',\
_ceil,'ceil',\
_ceilf,'ceilf',\
_clearerr,'clearerr',\
_clock,'clock',\
_close,'close',\
_copysign,'copysign',\
_copysignf,'copysignf',\
_cos,'cos',\
_cosf,'cosf',\
_cosh,'cosh',\
_coshf,'coshf',\
_create_file,'create_file',\
_create_image,'create_image',\
_create_thread,'create_thread',\
_ctime,'ctime',\
_ctime_r,'ctime_r',\
_debugwrite,'debugwrite',\
_delete_file,'delete_file',\
_difftime,'difftime',\
_diprintf,'diprintf',\
_div,'div',\
_dprintf,'dprintf',\
_drem,'drem',\
_dremf,'dremf',\
_entry,'entry',\
_envz_get,'envz_get',\
_erf,'erf',\
_erfc,'erfc',\
_erfcf,'erfcf',\
_erff,'erff',\
_exit,'exit',\
_exp,'exp',\
_exp10,'exp10',\
_exp10f,'exp10f',\
_exp2,'exp2',\
_exp2f,'exp2f',\
_expf,'expf',\
_expm1,'expm1',\
_expm1f,'expm1f',\
_fabs,'fabs',\
_fabsf,'fabsf',\
_fclose,'fclose',\
_fdim,'fdim',\
_fdimf,'fdimf',\
_fdopen,'fdopen',\
_fflush,'fflush',\
_fgetc,'fgetc',\
_fgets,'fgets',\
_fileno,'fileno',\
_finite,'finite',\
_finitef,'finitef',\
_fiprintf,'fiprintf',\
_fiscanf,'fiscanf',\
_floor,'floor',\
_floorf,'floorf',\
_fma,'fma',\
_fmaf,'fmaf',\
_fmax,'fmax',\
_fmaxf,'fmaxf',\
_fmin,'fmin',\
_fminf,'fminf',\
_fmod,'fmod',\
_fmodf,'fmodf',\
_fopen,'fopen',\
_fprintf,'fprintf',\
_fputc,'fputc',\
_fputs,'fputs',\
_fputwc,'fputwc',\
_fread,'fread',\
_free,'free',\
_freopen,'freopen',\
_frexp,'frexp',\
_frexpf,'frexpf',\
_fscanf,'fscanf',\
_fseek,'fseek',\
_fseeko,'fseeko',\
_fstat,'fstat',\
_ftell,'ftell',\
_ftello,'ftello',\
_fwrite,'fwrite',\
_gamma,'gamma',\
_gamma_r,'gamma_r',\
_gammaf,'gammaf',\
_gammaf_r,'gammaf_r',\
_get_entry_point,'get_entry_point',\
_get_fileinfo,'get_fileinfo',\
_get_proc_address,'get_proc_address',\
_getenv,'getenv',\
_gettimeofday,'gettimeofday',\
_gmtime,'gmtime',\
_gmtime_r,'gmtime_r',\
_hypot,'hypot',\
_hypotf,'hypotf',\
_ilogb,'ilogb',\
_ilogbf,'ilogbf',\
_infinity,'infinity',\
_infinityf,'infinityf',\
_init_global_reent,'init_global_reent',\
_init_loader,'init_loader',\
_init_reent,'init_reent',\
_isalnum,'isalnum',\
_isalpha,'isalpha',\
_isascii,'isascii',\
_isblank,'isblank',\
_iscntrl,'iscntrl',\
_isdigit,'isdigit',\
_isgraph,'isgraph',\
_isinf,'isinf',\
_isinff,'isinff',\
_islower,'islower',\
_isnan,'isnan',\
_isnanf,'isnanf',\
_isprint,'isprint',\
_ispunct,'ispunct',\
_isspace,'isspace',\
_isupper,'isupper',\
_iswalnum,'iswalnum',\
_iswalpha,'iswalpha',\
_iswblank,'iswblank',\
_iswcntrl,'iswcntrl',\
_iswctype,'iswctype',\
_iswdigit,'iswdigit',\
_iswgraph,'iswgraph',\
_iswlower,'iswlower',\
_iswprint,'iswprint',\
_iswpunct,'iswpunct',\
_iswspace,'iswspace',\
_iswupper,'iswupper',\
_iswxdigit,'iswxdigit',\
_isxdigit,'isxdigit',\
_j0,'j0',\
_j0f,'j0f',\
_j1,'j1',\
_j1f,'j1f',\
_jn,'jn',\
_jnf,'jnf',\
_ldexp,'ldexp',\
_ldexpf,'ldexpf',\
_lgamma,'lgamma',\
_lgamma_r,'lgamma_r',\
_lgammaf,'lgammaf',\
_lgammaf_r,'lgammaf_r',\
_libc_crt_startup,'libc_crt_startup',\
_link_app,'link_app',\
_link_image,'link_image',\
_llrint,'llrint',\
_llrintf,'llrintf',\
_llrintl,'llrintl',\
_llround,'llround',\
_llroundf,'llroundf',\
_load_library,'load_library',\
_loader_env,'loader_env',\
_localeconv,'localeconv',\
_localtime,'localtime',\
_localtime_r,'localtime_r',\
_log,'log',\
_log10,'log10',\
_log10f,'log10f',\
_log1p,'log1p',\
_log1pf,'log1pf',\
_log2,'log2',\
_log2f,'log2f',\
_logb,'logb',\
_logbf,'logbf',\
_logf,'logf',\
_longjmp,'longjmp',\
_lrint,'lrint',\
_lrintf,'lrintf',\
_lrintl,'lrintl',\
_lround,'lround',\
_lroundf,'lroundf',\
_lseek,'lseek',\
_malloc,'malloc',\
_matherr,'matherr',\
_mbrtowc,'mbrtowc',\
_mbtowc,'mbtowc',\
_memalign,'memalign',\
_memchr,'memchr',\
_memcmp,'memcmp',\
_memcpy,'memcpy',\
_memmove,'memmove',\
_memset,'memset',\
_mktime,'mktime',\
_modf,'modf',\
_modff,'modff',\
_nan,'nan',\
_nanf,'nanf',\
_nearbyint,'nearbyint',\
_nearbyintf,'nearbyintf',\
_nextafter,'nextafter',\
_nextafterf,'nextafterf',\
_open,'open',\
_path_list,'path_list',\
_pow,'pow',\
_pow10,'pow10',\
_pow10f,'pow10f',\
_powf,'powf',\
_printf,'printf',\
_putc,'putc',\
_putchar,'putchar',\
_puts,'puts',\
_qsort,'qsort',\
_raise,'raise',\
_rand,'rand',\
_rand_r,'rand_r',\
_read,'read',\
_read_file,'read_file',\
_realloc,'realloc',\
_remainder,'remainder',\
_remainderf,'remainderf',\
_remove,'remove',\
_remquo,'remquo',\
_remquof,'remquof',\
_rename,'rename',\
_rint,'rint',\
_rintf,'rintf',\
_rintl,'rintl',\
_round,'round',\
_roundf,'roundf',\
_scalb,'scalb',\
_scalbf,'scalbf',\
_scalbln,'scalbln',\
_scalblnf,'scalblnf',\
_scalbn,'scalbn',\
_scalbnf,'scalbnf',\
_seed48,'seed48',\
_set_file_size,'set_file_size',\
_setjmp,'setjmp',\
_setlocale,'setlocale',\
_setvbuf,'setvbuf',\
_signal,'signal',\
_significand,'significand',\
_significandf,'significandf',\
_sin,'sin',\
_sincos,'sincos',\
_sincosf,'sincosf',\
_sinf,'sinf',\
_sinh,'sinh',\
_sinhf,'sinhf',\
_siprintf,'siprintf',\
_sniprintf,'sniprintf',\
_snprintf,'snprintf',\
_sprintf,'sprintf',\
_sqrt,'sqrt',\
_sqrtf,'sqrtf',\
_srand,'srand',\
_srand48,'srand48',\
_sscanf,'sscanf',\
_stpcpy,'stpcpy',\
_stpncpy,'stpncpy',\
_strcasecmp,'strcasecmp',\
_strcasestr,'strcasestr',\
_strcat,'strcat',\
_strchr,'strchr',\
_strcmp,'strcmp',\
_strcoll,'strcoll',\
_strcpy,'strcpy',\
_strcspn,'strcspn',\
_strdup,'strdup',\
_strerror,'strerror',\
_strftime,'strftime',\
_strlen,'strlen',\
_strncasecmp,'strncasecmp',\
_strncat,'strncat',\
_strncmp,'strncmp',\
_strncpy,'strncpy',\
_strndup,'strndup',\
_strnlen,'strnlen',\
_strpbrk,'strpbrk',\
_strrchr,'strrchr',\
_strsep,'strsep',\
_strspn,'strspn',\
_strstr,'strstr',\
_strtod,'strtod',\
_strtof,'strtof',\
_strtok,'strtok',\
_strtok_r,'strtok_r',\
_strtol,'strtol',\
_strtoll,'strtoll',\
_strtoul,'strtoul',\
_strtoull,'strtoull',\
_strupr,'strupr',\
_system,'system',\
_tan,'tan',\
_tanf,'tanf',\
_tanh,'tanh',\
_tanhf,'tanhf',\
_tempnam,'tempnam',\
_tgamma,'tgamma',\
_tgammaf,'tgammaf',\
_time,'time',\
_tls_alloc,'tls_alloc',\
_tmpfile,'tmpfile',\
_tmpnam,'tmpnam',\
_toascii,'toascii',\
_tolower,'tolower',\
_toupper,'toupper',\
_towctrans,'towctrans',\
_towlower,'towlower',\
_towupper,'towupper',\
_trunc,'trunc',\
_truncf,'truncf',\
_ungetc,'ungetc',\
_user_alloc,'user_alloc',\
_validate_pe,'validate_pe',\
_vasniprintf,'vasniprintf',\
_vasnprintf,'vasnprintf',\
_vdiprintf,'vdiprintf',\
_vdprintf,'vdprintf',\
_vfiprintf,'vfiprintf',\
_vfiscanf,'vfiscanf',\
_vfprintf,'vfprintf',\
_vfscanf,'vfscanf',\
_vscanf,'vscanf',\
_vsnprintf,'vsnprintf',\
_vsprintf,'vsprintf',\
_vsscanf,'vsscanf',\
_wcrtomb,'wcrtomb',\
_wctrans,'wctrans',\
_wctype,'wctype',\
_write,'write',\
_write_file,'write_file',\
_y0,'y0',\
_y0f,'y0f',\
_y1,'y1',\
_y1f,'y1f',\
_yn,'yn',\
_ynf,'ynf',\

/contrib/sdk/sources/newlib/libc.orig.def
2,18 → 2,18
_Balloc @1
_Bfree @2
_Exit @3 DATA
__assert @4
__assert_func @5
__ctype_ptr__ @6 DATA
__emutls_get_address @7
__errno @8
__fpclassifyd @9
__fpclassifyf @10
__mutex_lock @11
__signbitd @12
__signbitf @13
__srget_r @14
__swbuf_r @15
__assert_func @4
__ctype_ptr__ @5 DATA
__emutls_get_address @6
__errno @7
__fpclassifyd @8
__fpclassifyf @9
__mutex_lock @10
__signbitd @11
__signbitf @12
__srget_r @13
__swbuf_r @14
_assert @15
_atoi_r @16
_atol_r @17
_buf_findstr @18
171,339 → 171,338
atanf @170
atanh @171
atanhf @172
atexit @173
atof @174
atoi @175
atol @176
bsearch @177
calloc @178
cbrt @179
cbrtf @180
ceil @181
ceilf @182
clearerr @183
clock @184
close @185
copysign @186
copysignf @187
cos @188
cosf @189
cosh @190
coshf @191
create_file @192
create_image @193
create_thread @194
ctime @195
ctime_r @196
debugwrite @197
delete_file @198
difftime @199
diprintf @200
div @201
dprintf @202
drem @203
dremf @204
entry @205 DATA
envz_get @206
erf @207
erfc @208
erfcf @209
erff @210
exit @211
exp @212
exp10 @213
exp10f @214
exp2 @215
exp2f @216
expf @217
expm1 @218
expm1f @219
fabs @220
fabsf @221
fclose @222
fdim @223
fdimf @224
fdopen @225
fflush @226
fgetc @227
fgets @228
fileno @229
finite @230
finitef @231
fiprintf @232
fiscanf @233
floor @234
floorf @235
fma @236
fmaf @237
fmax @238
fmaxf @239
fmin @240
fminf @241
fmod @242
fmodf @243
fopen @244
fprintf @245
fputc @246
fputs @247
fputwc @248
fread @249
free @250
freopen @251
frexp @252
frexpf @253
fscanf @254
fseek @255
fseeko @256
fstat @257
ftell @258
ftello @259
fwrite @260
gamma @261
gamma_r @262
gammaf @263
gammaf_r @264
get_entry_point @265
get_fileinfo @266
get_proc_address @267
getenv @268
gettimeofday @269
gmtime @270
gmtime_r @271
hypot @272
hypotf @273
ilogb @274
ilogbf @275
infinity @276
infinityf @277
init_global_reent @278
init_loader @279
init_reent @280
isalnum @281
isalpha @282
isascii @283
isblank @284
iscntrl @285
isdigit @286
isgraph @287
isinf @288
isinff @289
islower @290
isnan @291
isnanf @292
isprint @293
ispunct @294
isspace @295
isupper @296
iswalnum @297
iswalpha @298
iswblank @299
iswcntrl @300
iswctype @301
iswdigit @302
iswgraph @303
iswlower @304
iswprint @305
iswpunct @306
iswspace @307
iswupper @308
iswxdigit @309
isxdigit @310
j0 @311
j0f @312
j1 @313
j1f @314
jn @315
jnf @316
ldexp @317
ldexpf @318
lgamma @319
lgamma_r @320
lgammaf @321
lgammaf_r @322
libc_crt_startup @323
link_app @324
link_image @325
llrint @326
llrintf @327
llrintl @328
llround @329
llroundf @330
load_library @331
loader_env @332 DATA
localeconv @333
localtime @334
localtime_r @335
log @336
log10 @337
log10f @338
log1p @339
log1pf @340
log2 @341
log2f @342
logb @343
logbf @344
logf @345
longjmp @346
lrint @347
lrintf @348
lrintl @349
lround @350
lroundf @351
lseek @352
malloc @353
matherr @354
mbrtowc @355
mbtowc @356
memalign @357
memchr @358
memcmp @359
memcpy @360
memmove @361
memset @362
mktime @363
modf @364
modff @365
nan @366
nanf @367
nearbyint @368
nearbyintf @369
nextafter @370
nextafterf @371
open @372
path_list @373 DATA
pow @374
pow10 @375
pow10f @376
powf @377
printf @378
putc @379
putchar @380
puts @381
qsort @382
raise @383
rand @384
rand_r @385
read @386
read_file @387
realloc @388
remainder @389
remainderf @390
remove @391
remquo @392
remquof @393
rename @394
rint @395
rintf @396
rintl @397
round @398
roundf @399
scalb @400
scalbf @401
scalbln @402
scalblnf @403
scalbn @404
scalbnf @405
seed48 @406
set_file_size @407
setjmp @408
setlocale @409
setvbuf @410
signal @411
significand @412
significandf @413
sin @414
sincos @415
sincosf @416
sinf @417
sinh @418
sinhf @419
siprintf @420
sniprintf @421
snprintf @422
sprintf @423
sqrt @424
sqrtf @425
srand @426
srand48 @427
sscanf @428
stpcpy @429
stpncpy @430
strcasecmp @431
strcasestr @432
strcat @433
strchr @434
strcmp @435
strcoll @436
strcpy @437
strcspn @438
strdup @439
strerror @440
strftime @441
strlen @442
strncasecmp @443
strncat @444
strncmp @445
strncpy @446
strndup @447
strnlen @448
strpbrk @449
strrchr @450
strsep @451
strspn @452
strstr @453
strtod @454
strtof @455
strtok @456
strtok_r @457
strtol @458
strtoll @459
strtoul @460
strtoull @461
strupr @462
system @463
tan @464
tanf @465
tanh @466
tanhf @467
tempnam @468
tgamma @469
tgammaf @470
time @471
tls_alloc @472 DATA
tmpfile @473
tmpnam @474
toascii @475
tolower @476
toupper @477
towctrans @478
towlower @479
towupper @480
trunc @481
truncf @482
ungetc @483
user_alloc @484
validate_pe @485
vasniprintf @486
vasnprintf @487
vdiprintf @488
vdprintf @489
vfiprintf @490
vfiscanf @491
vfprintf @492
vfscanf @493
vscanf @494
vsnprintf @495
vsprintf @496
vsscanf @497
wcrtomb @498
wctrans @499
wctype @500
write @501
write_file @502
y0 @503
y0f @504
y1 @505
y1f @506
yn @507
ynf @508
atof @173
atoi @174
atol @175
bsearch @176
calloc @177
cbrt @178
cbrtf @179
ceil @180
ceilf @181
clearerr @182
clock @183
close @184
copysign @185
copysignf @186
cos @187
cosf @188
cosh @189
coshf @190
create_file @191
create_image @192
create_thread @193
ctime @194
ctime_r @195
debugwrite @196
delete_file @197
difftime @198
diprintf @199
div @200
dprintf @201
drem @202
dremf @203
entry @204 DATA
envz_get @205
erf @206
erfc @207
erfcf @208
erff @209
exit @210
exp @211
exp10 @212
exp10f @213
exp2 @214
exp2f @215
expf @216
expm1 @217
expm1f @218
fabs @219
fabsf @220
fclose @221
fdim @222
fdimf @223
fdopen @224
fflush @225
fgetc @226
fgets @227
fileno @228
finite @229
finitef @230
fiprintf @231
fiscanf @232
floor @233
floorf @234
fma @235
fmaf @236
fmax @237
fmaxf @238
fmin @239
fminf @240
fmod @241
fmodf @242
fopen @243
fprintf @244
fputc @245
fputs @246
fputwc @247
fread @248
free @249
freopen @250
frexp @251
frexpf @252
fscanf @253
fseek @254
fseeko @255
fstat @256
ftell @257
ftello @258
fwrite @259
gamma @260
gamma_r @261
gammaf @262
gammaf_r @263
get_entry_point @264
get_fileinfo @265
get_proc_address @266
getenv @267
gettimeofday @268
gmtime @269
gmtime_r @270
hypot @271
hypotf @272
ilogb @273
ilogbf @274
infinity @275
infinityf @276
init_global_reent @277
init_loader @278
init_reent @279
isalnum @280
isalpha @281
isascii @282
isblank @283
iscntrl @284
isdigit @285
isgraph @286
isinf @287
isinff @288
islower @289
isnan @290
isnanf @291
isprint @292
ispunct @293
isspace @294
isupper @295
iswalnum @296
iswalpha @297
iswblank @298
iswcntrl @299
iswctype @300
iswdigit @301
iswgraph @302
iswlower @303
iswprint @304
iswpunct @305
iswspace @306
iswupper @307
iswxdigit @308
isxdigit @309
j0 @310
j0f @311
j1 @312
j1f @313
jn @314
jnf @315
ldexp @316
ldexpf @317
lgamma @318
lgamma_r @319
lgammaf @320
lgammaf_r @321
libc_crt_startup @322
link_app @323
link_image @324
llrint @325
llrintf @326
llrintl @327
llround @328
llroundf @329
load_library @330
loader_env @331 DATA
localeconv @332
localtime @333
localtime_r @334
log @335
log10 @336
log10f @337
log1p @338
log1pf @339
log2 @340
log2f @341
logb @342
logbf @343
logf @344
longjmp @345
lrint @346
lrintf @347
lrintl @348
lround @349
lroundf @350
lseek @351
malloc @352
matherr @353
mbrtowc @354
mbtowc @355
memalign @356
memchr @357
memcmp @358
memcpy @359
memmove @360
memset @361
mktime @362
modf @363
modff @364
nan @365
nanf @366
nearbyint @367
nearbyintf @368
nextafter @369
nextafterf @370
open @371
path_list @372 DATA
pow @373
pow10 @374
pow10f @375
powf @376
printf @377
putc @378
putchar @379
puts @380
qsort @381
raise @382
rand @383
rand_r @384
read @385
read_file @386
realloc @387
remainder @388
remainderf @389
remove @390
remquo @391
remquof @392
rename @393
rint @394
rintf @395
rintl @396
round @397
roundf @398
scalb @399
scalbf @400
scalbln @401
scalblnf @402
scalbn @403
scalbnf @404
seed48 @405
set_file_size @406
setjmp @407
setlocale @408
setvbuf @409
signal @410
significand @411
significandf @412
sin @413
sincos @414
sincosf @415
sinf @416
sinh @417
sinhf @418
siprintf @419
sniprintf @420
snprintf @421
sprintf @422
sqrt @423
sqrtf @424
srand @425
srand48 @426
sscanf @427
stpcpy @428
stpncpy @429
strcasecmp @430
strcasestr @431
strcat @432
strchr @433
strcmp @434
strcoll @435
strcpy @436
strcspn @437
strdup @438
strerror @439
strftime @440
strlen @441
strncasecmp @442
strncat @443
strncmp @444
strncpy @445
strndup @446
strnlen @447
strpbrk @448
strrchr @449
strsep @450
strspn @451
strstr @452
strtod @453
strtof @454
strtok @455
strtok_r @456
strtol @457
strtoll @458
strtoul @459
strtoull @460
strupr @461
system @462
tan @463
tanf @464
tanh @465
tanhf @466
tempnam @467
tgamma @468
tgammaf @469
time @470
tls_alloc @471 DATA
tmpfile @472
tmpnam @473
toascii @474
tolower @475
toupper @476
towctrans @477
towlower @478
towupper @479
trunc @480
truncf @481
ungetc @482
user_alloc @483
validate_pe @484
vasniprintf @485
vasnprintf @486
vdiprintf @487
vdprintf @488
vfiprintf @489
vfiscanf @490
vfprintf @491
vfscanf @492
vscanf @493
vsnprintf @494
vsprintf @495
vsscanf @496
wcrtomb @497
wctrans @498
wctype @499
write @500
write_file @501
y0 @502
y0f @503
y1 @504
y1f @505
yn @506
ynf @507

/contrib/sdk/sources/newlib/mem
0,0 → 1,508
EXPORTS
_Balloc
_Bfree
_Exit
__assert_func
__ctype_ptr__
__emutls_get_address
__errno
__fpclassifyd
__fpclassifyf
__mutex_lock
__signbitd
__signbitf
__srget_r
__swbuf_r
_assert
_atoi_r
_atol_r
_buf_findstr
_calloc_r
_cleanup
_cleanup_r
_close_r
_ctype_
_daylight
_diprintf_r
_dprintf_r
_dtoa_r
_exit
_f_atan2
_f_atan2f
_f_exp
_f_expf
_f_frexp
_f_frexpf
_f_ldexp
_f_ldexpf
_f_llrint
_f_llrintf
_f_llrintl
_f_log
_f_log10
_f_log10f
_f_logf
_f_lrint
_f_lrintf
_f_lrintl
_f_pow
_f_powf
_f_rint
_f_rintf
_f_rintl
_f_tan
_f_tanf
_fclose_r
_fdopen_r
_fflush_r
_fgetc_r
_fgets_r
_findenv
_fiprintf_r
_fiscanf_r
_fopen_r
_fprintf_r
_fputc_r
_fputs_r
_fputwc_r
_fread_r
_free_r
_freopen_r
_fscanf_r
_fseek_r
_fseeko_r
_fstat_r
_ftell_r
_ftello_r
_fwalk
_fwalk_reent
_fwrite_r
_gettimeofday
_gettimeofday_r
_global_impure_ptr
_grow_handles
_init_signal
_init_signal_r
_isatty
_isatty_r
_kill_r
_localeconv_r
_lseek_r
_malloc_r
_mbrtowc_r
_mbtowc_r
_mktm_r
_mprec_log10
_open_r
_printf_r
_putc_r
_putchar_r
_puts_r
_raise_r
_read
_read_r
_realloc_r
_remove_r
_rename_r
_seed48_r
_setlocale_r
_sfread_r
_signal_r
_siprintf_r
_sniprintf_r
_snprintf_r
_sprintf_r
_srand48_r
_sscanf_r
_strdup_r
_strerror_r
_strndup_r
_strtod_r
_strtol_r
_strtoll_r
_strtoul_r
_strtoull_r
_sungetc_r
_svfiprintf_r
_svfprintf_r
_system_r
_tempnam_r
_times_r
_timezone
_tls_map
_tmpfile_r
_tmpnam_r
_towctrans_r
_tzname
_ungetc_r
_user_strerror
_vasniprintf_r
_vasnprintf_r
_vdiprintf_r
_vdprintf_r
_vfiprintf_r
_vfiscanf_r
_vfprintf_r
_vfscanf_r
_vscanf_r
_vsnprintf_r
_vsprintf_r
_vsscanf_r
_wcrtomb_r
_wctomb_r
_wctrans_r
_wctype_r
_write_r
abort
abs
acos
acosf
acosh
acoshf
asctime
asctime_r
asin
asinf
asinh
asinhf
atan
atan2
atan2f
atanf
atanh
atanhf
atof
atoi
atol
bsearch
calloc
cbrt
cbrtf
ceil
ceilf
clearerr
clock
close
copysign
copysignf
cos
cosf
cosh
coshf
create_file
create_image
create_thread
ctime
ctime_r
debugwrite
delete_file
difftime
diprintf
div
dprintf
drem
dremf
entry
envz_get
erf
erfc
erfcf
erff
exit
exp
exp10
exp10f
exp2
exp2f
expf
expm1
expm1f
fabs
fabsf
fclose
fdim
fdimf
fdopen
fflush
fgetc
fgets
fileno
finite
finitef
fiprintf
fiscanf
floor
floorf
fma
fmaf
fmax
fmaxf
fmin
fminf
fmod
fmodf
fopen
fprintf
fputc
fputs
fputwc
fread
free
freopen
frexp
frexpf
fscanf
fseek
fseeko
fstat
ftell
ftello
fwrite
gamma
gamma_r
gammaf
gammaf_r
get_entry_point
get_fileinfo
get_proc_address
getenv
gettimeofday
gmtime
gmtime_r
hypot
hypotf
ilogb
ilogbf
infinity
infinityf
init_global_reent
init_loader
init_reent
isalnum
isalpha
isascii
isblank
iscntrl
isdigit
isgraph
isinf
isinff
islower
isnan
isnanf
isprint
ispunct
isspace
isupper
iswalnum
iswalpha
iswblank
iswcntrl
iswctype
iswdigit
iswgraph
iswlower
iswprint
iswpunct
iswspace
iswupper
iswxdigit
isxdigit
j0
j0f
j1
j1f
jn
jnf
ldexp
ldexpf
lgamma
lgamma_r
lgammaf
lgammaf_r
libc_crt_startup
link_app
link_image
llrint
llrintf
llrintl
llround
llroundf
load_library
loader_env
localeconv
localtime
localtime_r
log
log10
log10f
log1p
log1pf
log2
log2f
logb
logbf
logf
longjmp
lrint
lrintf
lrintl
lround
lroundf
lseek
malloc
matherr
mbrtowc
mbtowc
memalign
memchr
memcmp
memcpy
memmove
memset
mktime
modf
modff
nan
nanf
nearbyint
nearbyintf
nextafter
nextafterf
open
path_list
pow
pow10
pow10f
powf
printf
putc
putchar
puts
qsort
raise
rand
rand_r
read
read_file
realloc
remainder
remainderf
remove
remquo
remquof
rename
rint
rintf
rintl
round
roundf
scalb
scalbf
scalbln
scalblnf
scalbn
scalbnf
seed48
set_file_size
setjmp
setlocale
setvbuf
signal
significand
significandf
sin
sincos
sincosf
sinf
sinh
sinhf
siprintf
sniprintf
snprintf
sprintf
sqrt
sqrtf
srand
srand48
sscanf
stpcpy
stpncpy
strcasecmp
strcasestr
strcat
strchr
strcmp
strcoll
strcpy
strcspn
strdup
strerror
strftime
strlen
strncasecmp
strncat
strncmp
strncpy
strndup
strnlen
strpbrk
strrchr
strsep
strspn
strstr
strtod
strtof
strtok
strtok_r
strtol
strtoll
strtoul
strtoull
strupr
system
tan
tanf
tanh
tanhf
tempnam
tgamma
tgammaf
time
tls_alloc
tmpfile
tmpnam
toascii
tolower
toupper
towctrans
towlower
towupper
trunc
truncf
ungetc
user_alloc
validate_pe
vasniprintf
vasnprintf
vdiprintf
vdprintf
vfiprintf
vfiscanf
vfprintf
vfscanf
vscanf
vsnprintf
vsprintf
vsscanf
wcrtomb
wctrans
wctype
write
write_file
y0
y0f
y1
y1f
yn
ynf

/contrib/sdk/sources/newlib/stdlib/atexit.c
File deleted

/contrib/sdk/sources/newlib/stdlib/assert.c
File deleted

/contrib/sdk/sources/Mesa/Makefile
1,24 → 1,23
export CC = kos32-gcc
export AR = kos32-ar
export LD = kos32-ld
export STRIP = kos32-strip
EGL = egl
export SDK_DIR:= $(abspath ../..)
CC = gcc
EGL = egl
CFLAGS_OPT = -U_Win32 -U_WIN32 -U__MINGW32__ -UWIN32 -U_MSC_VER -Os
CFLAGS_OPT+= -fomit-frame-pointer -mno-ms-bitfields
CFLAGS = -c $(CFLAGS_OPT)
LDFLAGS = -nostdlib -shared -s --image-base 0 -T ../newlib/dll.lds -e _DllStartup
LDFLAGS+= --out-implib lib$(EGL).dll.a
LD = ld
LDFLAGS = -nostdlib -shared -s --image-base 0 -T ../newlib/dll.lds --out-implib lib$(EGL).dll.a -e _DllStartup
STRIP = $(PREFIX)strip
export SDK_DIR:= $(abspath ../..)
INC_MESA= -I../newlib/include -I./include -I./src -I./src/glsl -I./src/mesa -I./src/mapi
INC_EGL= -I../newlib/include -I../../includes -I./include -I../libdrm -I../libdrm/include/drm -I./src/egl/main -I./src/gbm/backends/dri -I./src/gbm/main
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L../../lib
LIBS:= -ldll -ldrm.dll -lc.dll -lgcc
41,18 → 40,18
$(EGL).dll: $(EGL_OBJS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ egl.def $(EGL_OBJS) $(LIBS)
# $(STRIP) $@
$(STRIP) $@
# sed -e "s/ @[^ ]*//" egl1.def > egl.def
mv -f $@ ../../bin
mv -f lib$(EGL).dll.a ../../lib
libglsl.a : $(GLSL_OBJS) Makefile
$(AR) libglsl.a $(GLSL_OBJS)
ar cvrs libglsl.a $(GLSL_OBJS)
mv -f libglsl.a ../../lib
libGL.dll: $(LIBGL_OBJS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(LIBGL_OBJS) $(LIBS)
# $(STRIP) $@
$(STRIP) $@
# sed -e "s/ @[^ ]*//" egl1.def > egl.def
mv -f $@ ../../bin
mv -f libGL.dll.a ../../lib

/contrib/sdk/sources/Mesa/src/mapi/Makefile
1,3 → 1,4
CC = gcc
SRC_DIR:=$(SDK_DIR)/sources
MESA_SRC:= $(SRC_DIR)/Mesa/src
6,13 → 7,16
CFLAGS_OPT+= -fomit-frame-pointer -mno-ms-bitfields
CFLAGS = -c $(CFLAGS_OPT)
LD = ld
LDFLAGS = -nostdlib -shared -s --image-base 0 -T $(SRC_DIR)/newlib/dll.lds --out-implib libGL.dll.a -e _DllStartup
STRIP = $(PREFIX)strip
INC_MESA:= -I$(SRC_DIR)/newlib/include -I$(SRC_DIR)/Mesa/include
INC_MESA+= -I./src -I$(MESA_SRC)/glsl -I$(MESA_SRC)/mesa -I$(MESA_SRC)/mapi
LIBPATH:= -L$(SDK_DIR)/lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L$(SDK_DIR)/lib
LIBS:= -ldll -ldrm.dll -lc.dll -lgcc
41,7 → 45,7
libGL.dll: $(LIBGL_OBJS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ mesa.def $(LIBGL_OBJS) $(LIBS)
# $(STRIP) $@
$(STRIP) $@
mv -f $@ $(SDK_DIR)/bin
mv -f libGL.dll.a $(SDK_DIR)/lib

/contrib/sdk/sources/Mesa/src/mesa/Makefile
1,3 → 1,4
CC = gcc
SRC_DIR:=$(SDK_DIR)/sources
MESA_SRC:= $(SRC_DIR)/Mesa/src
6,14 → 7,17
CFLAGS_OPT+= -fomit-frame-pointer -mno-ms-bitfields
CFLAGS = -c $(CFLAGS_OPT)
LD = ld
LDFLAGS = -nostdlib -shared -s --image-base 0 -T $(SRC_DIR)/newlib/dll.lds -e _DllStartup
STRIP = $(PREFIX)strip
INC_MESA:= -I$(SRC_DIR)/newlib/include -I$(SRC_DIR)/Mesa/include
INC_MESA+= -I./ -I$(MESA_SRC)/glsl -I$(MESA_SRC)/mesa -I$(MESA_SRC)/mapi
INC_MESA+= -I$(SRC_DIR)/libdrm -I$(MESA_SRC) -I$(SRC_DIR)/expat/lib
INC_I965:= -I$(SRC_DIR)/libdrm/intel -I$(SRC_DIR)/libdrm/include/drm -I$(MESA_SRC)/mesa/drivers/dri/common
LIBPATH:= -L$(SDK_DIR)/lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L$(SDK_DIR)/lib
LIBS:= -ldll -lglsl -lGL.dll -lsupc++ -lgcc_eh -ldrm.dll -lexpat -lc.dll -lgcc
377,7 → 381,7
i965_dri.drv: $(I965_OBJS) $(MESA_OBJS) dri.def Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(I965_OBJS) $(MESA_OBJS) dri.def $(LIBS)
# $(STRIP) $@
$(STRIP) $@
mv -f $@ $(SDK_DIR)/bin
%.o : %.c Makefile

/contrib/sdk/sources/Mesa/src/glsl/Makefile
1,3 → 1,4
CC = gcc
SRC_DIR:=$(SDK_DIR)/sources
MESA_SRC:= $(SRC_DIR)/Mesa/src
113,7 → 114,7
all: libglsl.a
libglsl.a : $(GLSL_OBJS) Makefile
$(AR) crs libglsl.a $(GLSL_OBJS)
ar cvrs libglsl.a $(GLSL_OBJS)
mv -f libglsl.a $(SDK_DIR)/lib
%.o : %.c Makefile

/contrib/sdk/sources/Mesa/src/egl/Makefile
1,3 → 1,4
CC = gcc
SRC_DIR:=$(SDK_DIR)/sources
MESA_SRC:= $(SRC_DIR)/Mesa/src
6,13 → 7,17
CFLAGS_OPT+= -fomit-frame-pointer -mno-ms-bitfields
CFLAGS = -c $(CFLAGS_OPT)
LD = ld
LDFLAGS = -nostdlib -shared -s --image-base 0 -T $(SRC_DIR)/newlib/dll.lds --out-implib libegl.dll.a -e _DllStartup
STRIP = $(PREFIX)strip
INC_EGL:= -I$(SRC_DIR)/newlib/include -I$(SDK_DIR)/includes -I$(SRC_DIR)/Mesa/include
INC_EGL+= -I$(SRC_DIR)/libdrm -I$(SRC_DIR)/libdrm/include/drm -I./main
INC_EGL+= -I$(MESA_SRC)/gbm/backends/dri -I$(MESA_SRC)/gbm/main
LIBPATH:= -L$(SDK_DIR)/lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L$(SDK_DIR)/lib
LIBS:= -ldll -ldrm.dll -lc.dll -lgcc
58,7 → 63,7
libegl.dll: $(EGL_OBJS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ $(MESA_SRC)/../egl.def $(EGL_OBJS) $(LIBS)
# $(STRIP) $@
$(STRIP) $@
# sed -e "s/ @[^ ]*//" egl1.def > egl.def
mv -f $@ $(SDK_DIR)/bin
mv -f libegl.dll.a $(SDK_DIR)/lib

/contrib/sdk/sources/eglut/Makefile
2,19 → 2,17
LIBRARY= libeglut
IMPLIB= libeglut.dll.a
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
CC=gcc
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
AR= ar
INCLUDES= -I. -I../newlib/include -I../Mesa/include -I../Mesa/src/gbm/main -I../libdrm/include
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0
LDFLAGS+= --out-implib $(IMPLIB)
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --out-implib $(IMPLIB)
LIBPATH:= -L../../lib
LIBS:= -ldll -legl.dll -lGL.dll -lc.dll
LIBS:= -ldll -legl.dll -lgl.dll -lc.dll
DEFINES= -D__unix__ -DMESA_EGL_NO_X11_HEADERS
34,7 → 32,7
all:$(LIBRARY).a $(LIBRARY).dll
$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) crs $(LIBRARY).a $(OBJECTS)
ar cvrs $(LIBRARY).a $(OBJECTS)
mv -f $(LIBRARY).a ../../lib
$(LIBRARY).dll: $(OBJECTS) Makefile

/contrib/sdk/sources/gcc_eh/Makefile
1,18 → 1,19
LIBRARY= libgcc_eh
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
CPP= kos32-g++
STRIP = kos32-strip
CC=gcc
CPP=g++
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
ARFLAG = crs
LD = ld
AR= ar
STRIP = $(PREFIX)strip
INCLUDES= -I. -I../newlib/include
LIBS:= -ldll -lc.dll
23,17 → 24,22
unwind-dw2.c \
unwind-dw2-fde.c
OBJECTS = $(patsubst %.cc, %.o, $(patsubst %.c, %.o, $(SOURCES)))
# targets
all:$(LIBRARY).a
$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) cvrs $(LIBRARY).a $(OBJECTS)
ar cvrs $(LIBRARY).a $(OBJECTS)
mv -f $(LIBRARY).a ../../lib
%.o : %.c Makefile
$(CC) $(CFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<

/contrib/sdk/sources/gcc_eh/config/i386/w32-unwind.h
82,8 → 82,8
Note that this implementation follows closely the same principles as the
GNU/Linux and OSF ones. */
//#define WIN32_MEAN_AND_LEAN
//#include <windows.h>
#define WIN32_MEAN_AND_LEAN
#include <windows.h>
/* Patterns found experimentally to be on a Windows signal handler */
/* In a standard exception filter */
123,7 → 123,6
_Unwind_FrameState *fs)
{
#if 0
void * ctx_ra_ = (void *)(context->ra); /* return address */
void * ctx_cfa_ = (void *)(context->cfa); /* context frame address */
unsigned char * pc_ = (unsigned char *) ctx_ra_;
210,7 → 209,4
}
else
return _URC_END_OF_STACK;
#endif
return _URC_NO_REASON;
}

/contrib/sdk/sources/libsupc++/Makefile
1,22 → 1,25
LIBRARY= libsupc++
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
CPP= kos32-g++
STRIP = kos32-strip
CC=gcc
CPP=g++
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
ARFLAGS= crs
LD = ld
AR= ar
STRIP = $(PREFIX)strip
INCLUDES= -I. -I../newlib/include
LIBS:= -ldll -lc.dll
DEFINES= -DIN_GCC -DUSE_EMUTLS=1 -D_GLIBCXX_HAVE_TLS
DEFINES= -DIN_GCC -DUSE_EMUTLS=1
SOURCES = gthr_mutex.c \
bad_alloc.cc \
class_type_info.cc \
50,14 → 53,19
OBJECTS = $(patsubst %.cc, %.o, $(patsubst %.c, %.o, $(SOURCES)))
# targets
all:$(LIBRARY).a
$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJECTS)
ar cvrs $(LIBRARY).a $(OBJECTS)
mv -f $(LIBRARY).a ../../lib
%.o : %.c Makefile
$(CC) $(CFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
68,3 → 76,6
clean:
-rm -f *.o

/contrib/sdk/sources/freetype/Makefile
1,20 → 1,17
LIBRARY = freetype
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CC = gcc
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -Wall -Winline -fomit-frame-pointer
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0
LDFLAGS+= --out-implib lib$(LIBRARY).dll.a
LD = ld
LDFLAGS = -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --out-implib lib$(LIBRARY).dll.a
ARFLAGS = crs
STRIP = $(PREFIX)strip
INCLUDES= -I../newlib/include -I./include -I./include/freetype/config
LIBPATH:= -L../../lib -L/home/autobuild/tools/win32/mingw32/lib
LIBPATH:= -L../../lib
LIBS:= -ldll -lc.dll -lgcc
76,14 → 73,14
ebox:lib$(LIBRARY).a $(LIBRARY).dll
lib$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) cvrs lib$(LIBRARY).a $(OBJECTS)
ar cvrs lib$(LIBRARY).a $(OBJECTS)
mv -f lib$(LIBRARY).a ../../lib
$(LIBRARY).dll: lib$(LIBRARY).def $(OBJECTS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ lib$(LIBRARY).def $(OBJECTS) $(LIBS)
$(STRIP) $@
#sed -f ../newlib/cmd1.sed lib$(LIBRARY).def > mem
#sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
sed -f ../newlib/cmd1.sed lib$(LIBRARY).def > mem
sed -f ../newlib/cmd2.sed mem >$(LIBRARY).inc
mv -f $@ ../../bin
mv -f lib$(LIBRARY).dll.a ../../lib
92,6 → 89,7
$(CC) $(INCLUDES) $(CFLAGS) $(DEFINES) -o $@ $<
clean:
-rm -f *.o

/contrib/sdk/sources/freetype/docs/VERSION.DLL
0,0 → 1,123
Due to our use of `libtool' to generate and install the FreeType 2
libraries on Unix systems, as well as other historical events, it is
generally very difficult to know precisely which release of the font
engine is installed on a given system.
This file tries to explain why and to document ways to properly detect
FreeType on Unix.
1. Version and Release numbers
------------------------------
For each new public release of FreeType 2, there are generally *three*
distinct `version' numbers to consider:
* The official FreeType 2 release number, like 2.3.1 or 2.4.10.
* The libtool (and Unix) specific version number, like 13.0.7. This
is what `freetype-config --version' returns.
* The platform-specific shared object number, used for example when
the library is installed as `/usr/lib/libfreetype.so.6.7.1'.
The platform-specific number is, unsurprisingly, platform-specific and
varies with the operating system you are using (several variants of
Linux, FreeBSD, Solaris, etc.). You should thus _never_ use it, even
for simple tests.
The libtool-specific number does not equal the release number but is
tied to it.
The release number is available at *compile* time through the following
macros defined in FT_FREETYPE_H:
- FREETYPE_MAJOR: major release number
- FREETYPE_MINOR: minor release number
- FREETYPE_PATCH: patch release number
See below for a small autoconf fragment.
The release number is also available at *runtime* through the
`FT_Library_Version' API.
2. History
----------
The following table gives, for all releases since 2.3.0, the
corresponding libtool number, as well as the shared object number found
on _most_ systems, but not all of them:
release libtool so
-------------------------------
2.5.0 16.2.10 6.10.2
2.4.12 16.1.10 6.10.1
2.4.11 16.0.10 6.10.0
2.4.10 15.0.9 6.9.0
2.4.9 14.1.8 6.8.1
2.4.8 14.0.8 6.8.0
2.4.7 13.2.7 6.7.2
2.4.6 13.1.7 6.7.1
2.4.5 13.0.7 6.7.0
2.4.4 12.2.6 6.6.2
2.4.3 12.1.6 6.6.1
2.4.2 12.0.6 6.6.0
2.4.1 11.1.5 6.5.1
2.4.0 11.0.5 6.5.0
2.3.12 10.0.4 6.4.0
2.3.11 9.22.3 6.3.22
2.3.10 9.21.3 6.3.21
2.3.9 9.20.3 6.3.20
2.3.8 9.19.3 6.3.19
2.3.7 9.18.3 6.3.18
2.3.6 9.17.3 6.3.17
2.3.5 9.16.3 6.3.16
2.3.4 9.15.3 6.3.15
2.3.3 9.14.3 6.3.14
2.3.2 9.13.3 6.3.13
2.3.1 9.12.3 6.3.12
2.3.0 9.11.3 6.3.11
3. Autoconf Code Fragment
-------------------------
Lars Clausen contributed the following autoconf fragment to detect which
version of FreeType is installed on a system. This one tests for a
version that is at least 2.0.9; you should change it to check against
other release numbers.
AC_MSG_CHECKING([whether FreeType version is 2.0.9 or higher])
old_CPPFLAGS="$CPPFLAGS"
CPPFLAGS=`freetype-config --cflags`
AC_TRY_CPP([
#include <ft2build.h>
#include FT_FREETYPE_H
#if (FREETYPE_MAJOR*1000 + FREETYPE_MINOR)*1000 + FREETYPE_PATCH < 2000009
#error Freetype version too low.
#endif
],
[AC_MSG_RESULT(yes)
FREETYPE_LIBS=`freetype-config --libs`
AC_SUBST(FREETYPE_LIBS)
AC_DEFINE(HAVE_FREETYPE,1,[Define if you have the FreeType2 library])
CPPFLAGS="$old_CPPFLAGS"],
[AC_MSG_ERROR([Need FreeType library version 2.0.9 or higher])])
------------------------------------------------------------------------
Copyright 2002-2013 by
David Turner, Robert Wilhelm, and Werner Lemberg.
This file is part of the FreeType project, and may only be used,
modified, and distributed under the terms of the FreeType project
license, LICENSE.TXT. By continuing to use, modify, or distribute this
file you indicate that you have read the license and understand and
accept it fully.
--- end of VERSION.DLL ---

/contrib/sdk/sources/freetype/freetype.inc
0,0 → 1,352
EXPORTS,'EXPORTS',\
DllStartup,'DllStartup',\ @1
FTC_CMapCache_Lookup,'FTC_CMapCache_Lookup',\ @2
FTC_CMapCache_New,'FTC_CMapCache_New',\ @3
FTC_ImageCache_Lookup,'FTC_ImageCache_Lookup',\ @4
FTC_ImageCache_LookupScaler,'FTC_ImageCache_LookupScaler',\ @5
FTC_ImageCache_New,'FTC_ImageCache_New',\ @6
FTC_Manager_Done,'FTC_Manager_Done',\ @7
FTC_Manager_LookupFace,'FTC_Manager_LookupFace',\ @8
FTC_Manager_LookupSize,'FTC_Manager_LookupSize',\ @9
FTC_Manager_New,'FTC_Manager_New',\ @10
FTC_Manager_RemoveFaceID,'FTC_Manager_RemoveFaceID',\ @11
FTC_Manager_Reset,'FTC_Manager_Reset',\ @12
FTC_Node_Unref,'FTC_Node_Unref',\ @13
FTC_SBitCache_Lookup,'FTC_SBitCache_Lookup',\ @14
FTC_SBitCache_LookupScaler,'FTC_SBitCache_LookupScaler',\ @15
FTC_SBitCache_New,'FTC_SBitCache_New',\ @16
FT_Activate_Size,'FT_Activate_Size',\ @17
FT_Add_Default_Modules,'FT_Add_Default_Modules',\ @18
FT_Add_Module,'FT_Add_Module',\ @19
FT_Angle_Diff,'FT_Angle_Diff',\ @20
FT_Atan2,'FT_Atan2',\ @21
FT_Attach_File,'FT_Attach_File',\ @22
FT_Attach_Stream,'FT_Attach_Stream',\ @23
FT_Bitmap_Convert,'FT_Bitmap_Convert',\ @24
FT_Bitmap_Copy,'FT_Bitmap_Copy',\ @25
FT_Bitmap_Done,'FT_Bitmap_Done',\ @26
FT_Bitmap_Embolden,'FT_Bitmap_Embolden',\ @27
FT_Bitmap_New,'FT_Bitmap_New',\ @28
FT_CMap_Done,'FT_CMap_Done',\ @29
FT_CMap_New,'FT_CMap_New',\ @30
FT_CeilFix,'FT_CeilFix',\ @31
FT_ClassicKern_Free,'FT_ClassicKern_Free',\ @32
FT_ClassicKern_Validate,'FT_ClassicKern_Validate',\ @33
FT_Cos,'FT_Cos',\ @34
FT_DivFix,'FT_DivFix',\ @35
FT_Done_Face,'FT_Done_Face',\ @36
FT_Done_FreeType,'FT_Done_FreeType',\ @37
FT_Done_Glyph,'FT_Done_Glyph',\ @38
FT_Done_GlyphSlot,'FT_Done_GlyphSlot',\ @39
FT_Done_Library,'FT_Done_Library',\ @40
FT_Done_Memory,'FT_Done_Memory',\ @41
FT_Done_Size,'FT_Done_Size',\ @42
FT_Face_CheckTrueTypePatents,'FT_Face_CheckTrueTypePatents',\ @43
FT_Face_GetCharVariantIndex,'FT_Face_GetCharVariantIndex',\ @44
FT_Face_GetCharVariantIsDefault,'FT_Face_GetCharVariantIsDefault',\ @45
FT_Face_GetCharsOfVariant,'FT_Face_GetCharsOfVariant',\ @46
FT_Face_GetVariantSelectors,'FT_Face_GetVariantSelectors',\ @47
FT_Face_GetVariantsOfChar,'FT_Face_GetVariantsOfChar',\ @48
FT_Face_SetUnpatentedHinting,'FT_Face_SetUnpatentedHinting',\ @49
FT_FloorFix,'FT_FloorFix',\ @50
FT_Get_Advance,'FT_Get_Advance',\ @51
FT_Get_Advances,'FT_Get_Advances',\ @52
FT_Get_BDF_Charset_ID,'FT_Get_BDF_Charset_ID',\ @53
FT_Get_BDF_Property,'FT_Get_BDF_Property',\ @54
FT_Get_CID_From_Glyph_Index,'FT_Get_CID_From_Glyph_Index',\ @55
FT_Get_CID_Is_Internally_CID_Keyed,'FT_Get_CID_Is_Internally_CID_Keyed',\ @56
FT_Get_CID_Registry_Ordering_Supplement,'FT_Get_CID_Registry_Ordering_Supplement',\ @57
FT_Get_CMap_Format,'FT_Get_CMap_Format',\ @58
FT_Get_CMap_Language_ID,'FT_Get_CMap_Language_ID',\ @59
FT_Get_Char_Index,'FT_Get_Char_Index',\ @60
FT_Get_Charmap_Index,'FT_Get_Charmap_Index',\ @61
FT_Get_FSType_Flags,'FT_Get_FSType_Flags',\ @62
FT_Get_First_Char,'FT_Get_First_Char',\ @63
FT_Get_Gasp,'FT_Get_Gasp',\ @64
FT_Get_Glyph,'FT_Get_Glyph',\ @65
FT_Get_Glyph_Name,'FT_Get_Glyph_Name',\ @66
FT_Get_Kerning,'FT_Get_Kerning',\ @67
FT_Get_MM_Var,'FT_Get_MM_Var',\ @68
FT_Get_Module,'FT_Get_Module',\ @69
FT_Get_Module_Interface,'FT_Get_Module_Interface',\ @70
FT_Get_Multi_Master,'FT_Get_Multi_Master',\ @71
FT_Get_Name_Index,'FT_Get_Name_Index',\ @72
FT_Get_Next_Char,'FT_Get_Next_Char',\ @73
FT_Get_PFR_Advance,'FT_Get_PFR_Advance',\ @74
FT_Get_PFR_Kerning,'FT_Get_PFR_Kerning',\ @75
FT_Get_PFR_Metrics,'FT_Get_PFR_Metrics',\ @76
FT_Get_PS_Font_Info,'FT_Get_PS_Font_Info',\ @77
FT_Get_PS_Font_Private,'FT_Get_PS_Font_Private',\ @78
FT_Get_PS_Font_Value,'FT_Get_PS_Font_Value',\ @79
FT_Get_Postscript_Name,'FT_Get_Postscript_Name',\ @80
FT_Get_Renderer,'FT_Get_Renderer',\ @81
FT_Get_Sfnt_Name,'FT_Get_Sfnt_Name',\ @82
FT_Get_Sfnt_Name_Count,'FT_Get_Sfnt_Name_Count',\ @83
FT_Get_Sfnt_Table,'FT_Get_Sfnt_Table',\ @84
FT_Get_SubGlyph_Info,'FT_Get_SubGlyph_Info',\ @85
FT_Get_Track_Kerning,'FT_Get_Track_Kerning',\ @86
FT_Get_TrueType_Engine_Type,'FT_Get_TrueType_Engine_Type',\ @87
FT_GlyphLoader_Add,'FT_GlyphLoader_Add',\ @88
FT_GlyphLoader_CheckPoints,'FT_GlyphLoader_CheckPoints',\ @89
FT_GlyphLoader_CheckSubGlyphs,'FT_GlyphLoader_CheckSubGlyphs',\ @90
FT_GlyphLoader_CopyPoints,'FT_GlyphLoader_CopyPoints',\ @91
FT_GlyphLoader_CreateExtra,'FT_GlyphLoader_CreateExtra',\ @92
FT_GlyphLoader_Done,'FT_GlyphLoader_Done',\ @93
FT_GlyphLoader_New,'FT_GlyphLoader_New',\ @94
FT_GlyphLoader_Prepare,'FT_GlyphLoader_Prepare',\ @95
FT_GlyphLoader_Reset,'FT_GlyphLoader_Reset',\ @96
FT_GlyphLoader_Rewind,'FT_GlyphLoader_Rewind',\ @97
FT_GlyphSlot_Embolden,'FT_GlyphSlot_Embolden',\ @98
FT_GlyphSlot_Oblique,'FT_GlyphSlot_Oblique',\ @99
FT_GlyphSlot_Own_Bitmap,'FT_GlyphSlot_Own_Bitmap',\ @100
FT_Glyph_Copy,'FT_Glyph_Copy',\ @101
FT_Glyph_Get_CBox,'FT_Glyph_Get_CBox',\ @102
FT_Glyph_Stroke,'FT_Glyph_Stroke',\ @103
FT_Glyph_StrokeBorder,'FT_Glyph_StrokeBorder',\ @104
FT_Glyph_To_Bitmap,'FT_Glyph_To_Bitmap',\ @105
FT_Glyph_Transform,'FT_Glyph_Transform',\ @106
FT_Has_PS_Glyph_Names,'FT_Has_PS_Glyph_Names',\ @107
FT_Hypot,'FT_Hypot',\ @108
FT_Init_FreeType,'FT_Init_FreeType',\ @109
FT_Library_SetLcdFilter,'FT_Library_SetLcdFilter',\ @110
FT_Library_SetLcdFilterWeights,'FT_Library_SetLcdFilterWeights',\ @111
FT_Library_Version,'FT_Library_Version',\ @112
FT_List_Add,'FT_List_Add',\ @113
FT_List_Finalize,'FT_List_Finalize',\ @114
FT_List_Find,'FT_List_Find',\ @115
FT_List_Insert,'FT_List_Insert',\ @116
FT_List_Iterate,'FT_List_Iterate',\ @117
FT_List_Remove,'FT_List_Remove',\ @118
FT_List_Up,'FT_List_Up',\ @119
FT_Load_Char,'FT_Load_Char',\ @120
FT_Load_Glyph,'FT_Load_Glyph',\ @121
FT_Load_Sfnt_Table,'FT_Load_Sfnt_Table',\ @122
FT_Lookup_Renderer,'FT_Lookup_Renderer',\ @123
FT_MSB,'FT_MSB',\ @124
FT_Match_Size,'FT_Match_Size',\ @125
FT_Matrix_Invert,'FT_Matrix_Invert',\ @126
FT_Matrix_Multiply,'FT_Matrix_Multiply',\ @127
FT_Matrix_Multiply_Scaled,'FT_Matrix_Multiply_Scaled',\ @128
FT_MulDiv,'FT_MulDiv',\ @129
FT_MulDiv_No_Round,'FT_MulDiv_No_Round',\ @130
FT_MulFix,'FT_MulFix',\ @131
FT_New_Face,'FT_New_Face',\ @132
FT_New_GlyphSlot,'FT_New_GlyphSlot',\ @133
FT_New_Library,'FT_New_Library',\ @134
FT_New_Memory,'FT_New_Memory',\ @135
FT_New_Memory_Face,'FT_New_Memory_Face',\ @136
FT_New_Size,'FT_New_Size',\ @137
FT_OpenType_Free,'FT_OpenType_Free',\ @138
FT_OpenType_Validate,'FT_OpenType_Validate',\ @139
FT_Open_Face,'FT_Open_Face',\ @140
FT_Outline_Check,'FT_Outline_Check',\ @141
FT_Outline_Copy,'FT_Outline_Copy',\ @142
FT_Outline_Decompose,'FT_Outline_Decompose',\ @143
FT_Outline_Done,'FT_Outline_Done',\ @144
FT_Outline_Done_Internal,'FT_Outline_Done_Internal',\ @145
FT_Outline_Embolden,'FT_Outline_Embolden',\ @146
FT_Outline_EmboldenXY,'FT_Outline_EmboldenXY',\ @147
FT_Outline_GetInsideBorder,'FT_Outline_GetInsideBorder',\ @148
FT_Outline_GetOutsideBorder,'FT_Outline_GetOutsideBorder',\ @149
FT_Outline_Get_BBox,'FT_Outline_Get_BBox',\ @150
FT_Outline_Get_Bitmap,'FT_Outline_Get_Bitmap',\ @151
FT_Outline_Get_CBox,'FT_Outline_Get_CBox',\ @152
FT_Outline_Get_Orientation,'FT_Outline_Get_Orientation',\ @153
FT_Outline_New,'FT_Outline_New',\ @154
FT_Outline_New_Internal,'FT_Outline_New_Internal',\ @155
FT_Outline_Render,'FT_Outline_Render',\ @156
FT_Outline_Reverse,'FT_Outline_Reverse',\ @157
FT_Outline_Transform,'FT_Outline_Transform',\ @158
FT_Outline_Translate,'FT_Outline_Translate',\ @159
FT_Property_Get,'FT_Property_Get',\ @160
FT_Property_Set,'FT_Property_Set',\ @161
FT_Raccess_Get_DataOffsets,'FT_Raccess_Get_DataOffsets',\ @162
FT_Raccess_Get_HeaderInfo,'FT_Raccess_Get_HeaderInfo',\ @163
FT_Raccess_Guess,'FT_Raccess_Guess',\ @164
FT_Reference_Face,'FT_Reference_Face',\ @165
FT_Reference_Library,'FT_Reference_Library',\ @166
FT_Remove_Module,'FT_Remove_Module',\ @167
FT_Render_Glyph,'FT_Render_Glyph',\ @168
FT_Render_Glyph_Internal,'FT_Render_Glyph_Internal',\ @169
FT_Request_Metrics,'FT_Request_Metrics',\ @170
FT_Request_Size,'FT_Request_Size',\ @171
FT_RoundFix,'FT_RoundFix',\ @172
FT_Select_Charmap,'FT_Select_Charmap',\ @173
FT_Select_Metrics,'FT_Select_Metrics',\ @174
FT_Select_Size,'FT_Select_Size',\ @175
FT_Set_Char_Size,'FT_Set_Char_Size',\ @176
FT_Set_Charmap,'FT_Set_Charmap',\ @177
FT_Set_Debug_Hook,'FT_Set_Debug_Hook',\ @178
FT_Set_MM_Blend_Coordinates,'FT_Set_MM_Blend_Coordinates',\ @179
FT_Set_MM_Design_Coordinates,'FT_Set_MM_Design_Coordinates',\ @180
FT_Set_Pixel_Sizes,'FT_Set_Pixel_Sizes',\ @181
FT_Set_Renderer,'FT_Set_Renderer',\ @182
FT_Set_Transform,'FT_Set_Transform',\ @183
FT_Set_Var_Blend_Coordinates,'FT_Set_Var_Blend_Coordinates',\ @184
FT_Set_Var_Design_Coordinates,'FT_Set_Var_Design_Coordinates',\ @185
FT_Sfnt_Table_Info,'FT_Sfnt_Table_Info',\ @186
FT_Sin,'FT_Sin',\ @187
FT_SqrtFixed,'FT_SqrtFixed',\ @188
FT_Stream_Close,'FT_Stream_Close',\ @189
FT_Stream_EnterFrame,'FT_Stream_EnterFrame',\ @190
FT_Stream_ExitFrame,'FT_Stream_ExitFrame',\ @191
FT_Stream_ExtractFrame,'FT_Stream_ExtractFrame',\ @192
FT_Stream_Free,'FT_Stream_Free',\ @193
FT_Stream_GetChar,'FT_Stream_GetChar',\ @194
FT_Stream_GetULong,'FT_Stream_GetULong',\ @195
FT_Stream_GetULongLE,'FT_Stream_GetULongLE',\ @196
FT_Stream_GetUOffset,'FT_Stream_GetUOffset',\ @197
FT_Stream_GetUShort,'FT_Stream_GetUShort',\ @198
FT_Stream_GetUShortLE,'FT_Stream_GetUShortLE',\ @199
FT_Stream_New,'FT_Stream_New',\ @200
FT_Stream_Open,'FT_Stream_Open',\ @201
FT_Stream_OpenBzip2,'FT_Stream_OpenBzip2',\ @202
FT_Stream_OpenGzip,'FT_Stream_OpenGzip',\ @203
FT_Stream_OpenLZW,'FT_Stream_OpenLZW',\ @204
FT_Stream_OpenMemory,'FT_Stream_OpenMemory',\ @205
FT_Stream_Pos,'FT_Stream_Pos',\ @206
FT_Stream_Read,'FT_Stream_Read',\ @207
FT_Stream_ReadAt,'FT_Stream_ReadAt',\ @208
FT_Stream_ReadChar,'FT_Stream_ReadChar',\ @209
FT_Stream_ReadFields,'FT_Stream_ReadFields',\ @210
FT_Stream_ReadULong,'FT_Stream_ReadULong',\ @211
FT_Stream_ReadULongLE,'FT_Stream_ReadULongLE',\ @212
FT_Stream_ReadUOffset,'FT_Stream_ReadUOffset',\ @213
FT_Stream_ReadUShort,'FT_Stream_ReadUShort',\ @214
FT_Stream_ReadUShortLE,'FT_Stream_ReadUShortLE',\ @215
FT_Stream_ReleaseFrame,'FT_Stream_ReleaseFrame',\ @216
FT_Stream_Seek,'FT_Stream_Seek',\ @217
FT_Stream_Skip,'FT_Stream_Skip',\ @218
FT_Stream_TryRead,'FT_Stream_TryRead',\ @219
FT_Stroker_BeginSubPath,'FT_Stroker_BeginSubPath',\ @220
FT_Stroker_ConicTo,'FT_Stroker_ConicTo',\ @221
FT_Stroker_CubicTo,'FT_Stroker_CubicTo',\ @222
FT_Stroker_Done,'FT_Stroker_Done',\ @223
FT_Stroker_EndSubPath,'FT_Stroker_EndSubPath',\ @224
FT_Stroker_Export,'FT_Stroker_Export',\ @225
FT_Stroker_ExportBorder,'FT_Stroker_ExportBorder',\ @226
FT_Stroker_GetBorderCounts,'FT_Stroker_GetBorderCounts',\ @227
FT_Stroker_GetCounts,'FT_Stroker_GetCounts',\ @228
FT_Stroker_LineTo,'FT_Stroker_LineTo',\ @229
FT_Stroker_New,'FT_Stroker_New',\ @230
FT_Stroker_ParseOutline,'FT_Stroker_ParseOutline',\ @231
FT_Stroker_Rewind,'FT_Stroker_Rewind',\ @232
FT_Stroker_Set,'FT_Stroker_Set',\ @233
FT_Tan,'FT_Tan',\ @234
FT_Trace_Get_Count,'FT_Trace_Get_Count',\ @235
FT_Trace_Get_Name,'FT_Trace_Get_Name',\ @236
FT_TrueTypeGX_Free,'FT_TrueTypeGX_Free',\ @237
FT_TrueTypeGX_Validate,'FT_TrueTypeGX_Validate',\ @238
FT_Vector_From_Polar,'FT_Vector_From_Polar',\ @239
FT_Vector_Length,'FT_Vector_Length',\ @240
FT_Vector_Polarize,'FT_Vector_Polarize',\ @241
FT_Vector_Rotate,'FT_Vector_Rotate',\ @242
FT_Vector_Transform,'FT_Vector_Transform',\ @243
FT_Vector_Transform_Scaled,'FT_Vector_Transform_Scaled',\ @244
FT_Vector_Unit,'FT_Vector_Unit',\ @245
TT_New_Context,'TT_New_Context',\ @246
TT_RunIns,'TT_RunIns',\ @247
__chkstk,'__chkstk',\ @248
__chkstk_ms,'__chkstk_ms',\ @249
_alloca,'_alloca',\ @250
af_autofitter_interface,'af_autofitter_interface',\ @251
af_cjk_script_class,'af_cjk_script_class',\ @252
af_dummy_script_class,'af_dummy_script_class',\ @253
af_glyph_hints_dump_edges,'af_glyph_hints_dump_edges',\ @254
af_glyph_hints_dump_points,'af_glyph_hints_dump_points',\ @255
af_glyph_hints_dump_segments,'af_glyph_hints_dump_segments',\ @256
af_glyph_hints_get_num_segments,'af_glyph_hints_get_num_segments',\ @257
af_glyph_hints_get_segment_offset,'af_glyph_hints_get_segment_offset',\ @258
af_indic_script_class,'af_indic_script_class',\ @259
af_latin_script_class,'af_latin_script_class',\ @260
af_property_get,'af_property_get',\ @261
af_property_get_face_globals,'af_property_get_face_globals',\ @262
af_property_set,'af_property_set',\ @263
afm_parser_funcs,'afm_parser_funcs',\ @264
autofit_module_class,'autofit_module_class',\ @265
bdf_cmap_class,'bdf_cmap_class',\ @266
bdf_driver_class,'bdf_driver_class',\ @267
cff_cmap_encoding_class_rec,'cff_cmap_encoding_class_rec',\ @268
cff_cmap_unicode_class_rec,'cff_cmap_unicode_class_rec',\ @269
cff_driver_class,'cff_driver_class',\ @270
ft_bitmap_glyph_class,'ft_bitmap_glyph_class',\ @271
ft_corner_is_flat,'ft_corner_is_flat',\ @272
ft_corner_orientation,'ft_corner_orientation',\ @273
ft_debug_init,'ft_debug_init',\ @274
ft_glyphslot_alloc_bitmap,'ft_glyphslot_alloc_bitmap',\ @275
ft_glyphslot_free_bitmap,'ft_glyphslot_free_bitmap',\ @276
ft_glyphslot_set_bitmap,'ft_glyphslot_set_bitmap',\ @277
ft_gray_for_premultiplied_srgb_bgra,'ft_gray_for_premultiplied_srgb_bgra',\ @278
ft_grays_raster,'ft_grays_raster',\ @279
ft_highpow2,'ft_highpow2',\ @280
ft_lzwstate_done,'ft_lzwstate_done',\ @281
ft_lzwstate_init,'ft_lzwstate_init',\ @282
ft_lzwstate_io,'ft_lzwstate_io',\ @283
ft_lzwstate_reset,'ft_lzwstate_reset',\ @284
ft_mem_alloc,'ft_mem_alloc',\ @285
ft_mem_dup,'ft_mem_dup',\ @286
ft_mem_free,'ft_mem_free',\ @287
ft_mem_qalloc,'ft_mem_qalloc',\ @288
ft_mem_qrealloc,'ft_mem_qrealloc',\ @289
ft_mem_realloc,'ft_mem_realloc',\ @290
ft_mem_strcpyn,'ft_mem_strcpyn',\ @291
ft_mem_strdup,'ft_mem_strdup',\ @292
ft_module_get_service,'ft_module_get_service',\ @293
ft_outline_glyph_class,'ft_outline_glyph_class',\ @294
ft_property_do,'ft_property_do',\ @295
ft_raccess_guess_table,'ft_raccess_guess_table',\ @296
ft_raster1_renderer_class,'ft_raster1_renderer_class',\ @297
ft_raster5_renderer_class,'ft_raster5_renderer_class',\ @298
ft_service_list_lookup,'ft_service_list_lookup',\ @299
ft_smooth_lcd_renderer_class,'ft_smooth_lcd_renderer_class',\ @300
ft_smooth_lcdv_renderer_class,'ft_smooth_lcdv_renderer_class',\ @301
ft_smooth_renderer_class,'ft_smooth_renderer_class',\ @302
ft_standard_raster,'ft_standard_raster',\ @303
ft_synthesize_vertical_metrics,'ft_synthesize_vertical_metrics',\ @304
ft_validator_error,'ft_validator_error',\ @305
ft_validator_init,'ft_validator_init',\ @306
ft_validator_run,'ft_validator_run',\ @307
ftc_basic_image_cache_class,'ftc_basic_image_cache_class',\ @308
ftc_basic_image_family_class,'ftc_basic_image_family_class',\ @309
ftc_basic_sbit_cache_class,'ftc_basic_sbit_cache_class',\ @310
ftc_basic_sbit_family_class,'ftc_basic_sbit_family_class',\ @311
ftc_cmap_cache_class,'ftc_cmap_cache_class',\ @312
ftc_face_list_class,'ftc_face_list_class',\ @313
ftc_size_list_class,'ftc_size_list_class',\ @314
longjmp,'longjmp',\ @315
otv_module_class,'otv_module_class',\ @316
pcf_cmap_class,'pcf_cmap_class',\ @317
pcf_driver_class,'pcf_driver_class',\ @318
pfr_cmap_class_rec,'pfr_cmap_class_rec',\ @319
pfr_driver_class,'pfr_driver_class',\ @320
pfr_metrics_service_rec,'pfr_metrics_service_rec',\ @321
ps_hints_apply,'ps_hints_apply',\ @322
ps_parser_funcs,'ps_parser_funcs',\ @323
ps_table_funcs,'ps_table_funcs',\ @324
psaux_module_class,'psaux_module_class',\ @325
pshinter_module_class,'pshinter_module_class',\ @326
psnames_module_class,'psnames_module_class',\ @327
setjmp,'setjmp',\ @328
sfnt_module_class,'sfnt_module_class',\ @329
t1_builder_funcs,'t1_builder_funcs',\ @330
t1_cmap_classes,'t1_cmap_classes',\ @331
t1_cmap_custom_class_rec,'t1_cmap_custom_class_rec',\ @332
t1_cmap_expert_class_rec,'t1_cmap_expert_class_rec',\ @333
t1_cmap_standard_class_rec,'t1_cmap_standard_class_rec',\ @334
t1_cmap_unicode_class_rec,'t1_cmap_unicode_class_rec',\ @335
t1_decoder_funcs,'t1_decoder_funcs',\ @336
t1_driver_class,'t1_driver_class',\ @337
t1cid_driver_class,'t1cid_driver_class',\ @338
t42_driver_class,'t42_driver_class',\ @339
tt_cmap0_class_rec,'tt_cmap0_class_rec',\ @340
tt_cmap10_class_rec,'tt_cmap10_class_rec',\ @341
tt_cmap12_class_rec,'tt_cmap12_class_rec',\ @342
tt_cmap13_class_rec,'tt_cmap13_class_rec',\ @343
tt_cmap14_class_rec,'tt_cmap14_class_rec',\ @344
tt_cmap2_class_rec,'tt_cmap2_class_rec',\ @345
tt_cmap4_class_rec,'tt_cmap4_class_rec',\ @346
tt_cmap6_class_rec,'tt_cmap6_class_rec',\ @347
tt_cmap8_class_rec,'tt_cmap8_class_rec',\ @348
tt_default_graphics_state,'tt_default_graphics_state',\ @349
tt_driver_class,'tt_driver_class',\ @350
winfnt_driver_class,'winfnt_driver_class',\ @351

/contrib/sdk/sources/freetype/mem
0,0 → 1,352
EXPORTS,'EXPORTS',\
DllStartup,'DllStartup',\ @1
FTC_CMapCache_Lookup,'FTC_CMapCache_Lookup',\ @2
FTC_CMapCache_New,'FTC_CMapCache_New',\ @3
FTC_ImageCache_Lookup,'FTC_ImageCache_Lookup',\ @4
FTC_ImageCache_LookupScaler,'FTC_ImageCache_LookupScaler',\ @5
FTC_ImageCache_New,'FTC_ImageCache_New',\ @6
FTC_Manager_Done,'FTC_Manager_Done',\ @7
FTC_Manager_LookupFace,'FTC_Manager_LookupFace',\ @8
FTC_Manager_LookupSize,'FTC_Manager_LookupSize',\ @9
FTC_Manager_New,'FTC_Manager_New',\ @10
FTC_Manager_RemoveFaceID,'FTC_Manager_RemoveFaceID',\ @11
FTC_Manager_Reset,'FTC_Manager_Reset',\ @12
FTC_Node_Unref,'FTC_Node_Unref',\ @13
FTC_SBitCache_Lookup,'FTC_SBitCache_Lookup',\ @14
FTC_SBitCache_LookupScaler,'FTC_SBitCache_LookupScaler',\ @15
FTC_SBitCache_New,'FTC_SBitCache_New',\ @16
FT_Activate_Size,'FT_Activate_Size',\ @17
FT_Add_Default_Modules,'FT_Add_Default_Modules',\ @18
FT_Add_Module,'FT_Add_Module',\ @19
FT_Angle_Diff,'FT_Angle_Diff',\ @20
FT_Atan2,'FT_Atan2',\ @21
FT_Attach_File,'FT_Attach_File',\ @22
FT_Attach_Stream,'FT_Attach_Stream',\ @23
FT_Bitmap_Convert,'FT_Bitmap_Convert',\ @24
FT_Bitmap_Copy,'FT_Bitmap_Copy',\ @25
FT_Bitmap_Done,'FT_Bitmap_Done',\ @26
FT_Bitmap_Embolden,'FT_Bitmap_Embolden',\ @27
FT_Bitmap_New,'FT_Bitmap_New',\ @28
FT_CMap_Done,'FT_CMap_Done',\ @29
FT_CMap_New,'FT_CMap_New',\ @30
FT_CeilFix,'FT_CeilFix',\ @31
FT_ClassicKern_Free,'FT_ClassicKern_Free',\ @32
FT_ClassicKern_Validate,'FT_ClassicKern_Validate',\ @33
FT_Cos,'FT_Cos',\ @34
FT_DivFix,'FT_DivFix',\ @35
FT_Done_Face,'FT_Done_Face',\ @36
FT_Done_FreeType,'FT_Done_FreeType',\ @37
FT_Done_Glyph,'FT_Done_Glyph',\ @38
FT_Done_GlyphSlot,'FT_Done_GlyphSlot',\ @39
FT_Done_Library,'FT_Done_Library',\ @40
FT_Done_Memory,'FT_Done_Memory',\ @41
FT_Done_Size,'FT_Done_Size',\ @42
FT_Face_CheckTrueTypePatents,'FT_Face_CheckTrueTypePatents',\ @43
FT_Face_GetCharVariantIndex,'FT_Face_GetCharVariantIndex',\ @44
FT_Face_GetCharVariantIsDefault,'FT_Face_GetCharVariantIsDefault',\ @45
FT_Face_GetCharsOfVariant,'FT_Face_GetCharsOfVariant',\ @46
FT_Face_GetVariantSelectors,'FT_Face_GetVariantSelectors',\ @47
FT_Face_GetVariantsOfChar,'FT_Face_GetVariantsOfChar',\ @48
FT_Face_SetUnpatentedHinting,'FT_Face_SetUnpatentedHinting',\ @49
FT_FloorFix,'FT_FloorFix',\ @50
FT_Get_Advance,'FT_Get_Advance',\ @51
FT_Get_Advances,'FT_Get_Advances',\ @52
FT_Get_BDF_Charset_ID,'FT_Get_BDF_Charset_ID',\ @53
FT_Get_BDF_Property,'FT_Get_BDF_Property',\ @54
FT_Get_CID_From_Glyph_Index,'FT_Get_CID_From_Glyph_Index',\ @55
FT_Get_CID_Is_Internally_CID_Keyed,'FT_Get_CID_Is_Internally_CID_Keyed',\ @56
FT_Get_CID_Registry_Ordering_Supplement,'FT_Get_CID_Registry_Ordering_Supplement',\ @57
FT_Get_CMap_Format,'FT_Get_CMap_Format',\ @58
FT_Get_CMap_Language_ID,'FT_Get_CMap_Language_ID',\ @59
FT_Get_Char_Index,'FT_Get_Char_Index',\ @60
FT_Get_Charmap_Index,'FT_Get_Charmap_Index',\ @61
FT_Get_FSType_Flags,'FT_Get_FSType_Flags',\ @62
FT_Get_First_Char,'FT_Get_First_Char',\ @63
FT_Get_Gasp,'FT_Get_Gasp',\ @64
FT_Get_Glyph,'FT_Get_Glyph',\ @65
FT_Get_Glyph_Name,'FT_Get_Glyph_Name',\ @66
FT_Get_Kerning,'FT_Get_Kerning',\ @67
FT_Get_MM_Var,'FT_Get_MM_Var',\ @68
FT_Get_Module,'FT_Get_Module',\ @69
FT_Get_Module_Interface,'FT_Get_Module_Interface',\ @70
FT_Get_Multi_Master,'FT_Get_Multi_Master',\ @71
FT_Get_Name_Index,'FT_Get_Name_Index',\ @72
FT_Get_Next_Char,'FT_Get_Next_Char',\ @73
FT_Get_PFR_Advance,'FT_Get_PFR_Advance',\ @74
FT_Get_PFR_Kerning,'FT_Get_PFR_Kerning',\ @75
FT_Get_PFR_Metrics,'FT_Get_PFR_Metrics',\ @76
FT_Get_PS_Font_Info,'FT_Get_PS_Font_Info',\ @77
FT_Get_PS_Font_Private,'FT_Get_PS_Font_Private',\ @78
FT_Get_PS_Font_Value,'FT_Get_PS_Font_Value',\ @79
FT_Get_Postscript_Name,'FT_Get_Postscript_Name',\ @80
FT_Get_Renderer,'FT_Get_Renderer',\ @81
FT_Get_Sfnt_Name,'FT_Get_Sfnt_Name',\ @82
FT_Get_Sfnt_Name_Count,'FT_Get_Sfnt_Name_Count',\ @83
FT_Get_Sfnt_Table,'FT_Get_Sfnt_Table',\ @84
FT_Get_SubGlyph_Info,'FT_Get_SubGlyph_Info',\ @85
FT_Get_Track_Kerning,'FT_Get_Track_Kerning',\ @86
FT_Get_TrueType_Engine_Type,'FT_Get_TrueType_Engine_Type',\ @87
FT_GlyphLoader_Add,'FT_GlyphLoader_Add',\ @88
FT_GlyphLoader_CheckPoints,'FT_GlyphLoader_CheckPoints',\ @89
FT_GlyphLoader_CheckSubGlyphs,'FT_GlyphLoader_CheckSubGlyphs',\ @90
FT_GlyphLoader_CopyPoints,'FT_GlyphLoader_CopyPoints',\ @91
FT_GlyphLoader_CreateExtra,'FT_GlyphLoader_CreateExtra',\ @92
FT_GlyphLoader_Done,'FT_GlyphLoader_Done',\ @93
FT_GlyphLoader_New,'FT_GlyphLoader_New',\ @94
FT_GlyphLoader_Prepare,'FT_GlyphLoader_Prepare',\ @95
FT_GlyphLoader_Reset,'FT_GlyphLoader_Reset',\ @96
FT_GlyphLoader_Rewind,'FT_GlyphLoader_Rewind',\ @97
FT_GlyphSlot_Embolden,'FT_GlyphSlot_Embolden',\ @98
FT_GlyphSlot_Oblique,'FT_GlyphSlot_Oblique',\ @99
FT_GlyphSlot_Own_Bitmap,'FT_GlyphSlot_Own_Bitmap',\ @100
FT_Glyph_Copy,'FT_Glyph_Copy',\ @101
FT_Glyph_Get_CBox,'FT_Glyph_Get_CBox',\ @102
FT_Glyph_Stroke,'FT_Glyph_Stroke',\ @103
FT_Glyph_StrokeBorder,'FT_Glyph_StrokeBorder',\ @104
FT_Glyph_To_Bitmap,'FT_Glyph_To_Bitmap',\ @105
FT_Glyph_Transform,'FT_Glyph_Transform',\ @106
FT_Has_PS_Glyph_Names,'FT_Has_PS_Glyph_Names',\ @107
FT_Hypot,'FT_Hypot',\ @108
FT_Init_FreeType,'FT_Init_FreeType',\ @109
FT_Library_SetLcdFilter,'FT_Library_SetLcdFilter',\ @110
FT_Library_SetLcdFilterWeights,'FT_Library_SetLcdFilterWeights',\ @111
FT_Library_Version,'FT_Library_Version',\ @112
FT_List_Add,'FT_List_Add',\ @113
FT_List_Finalize,'FT_List_Finalize',\ @114
FT_List_Find,'FT_List_Find',\ @115
FT_List_Insert,'FT_List_Insert',\ @116
FT_List_Iterate,'FT_List_Iterate',\ @117
FT_List_Remove,'FT_List_Remove',\ @118
FT_List_Up,'FT_List_Up',\ @119
FT_Load_Char,'FT_Load_Char',\ @120
FT_Load_Glyph,'FT_Load_Glyph',\ @121
FT_Load_Sfnt_Table,'FT_Load_Sfnt_Table',\ @122
FT_Lookup_Renderer,'FT_Lookup_Renderer',\ @123
FT_MSB,'FT_MSB',\ @124
FT_Match_Size,'FT_Match_Size',\ @125
FT_Matrix_Invert,'FT_Matrix_Invert',\ @126
FT_Matrix_Multiply,'FT_Matrix_Multiply',\ @127
FT_Matrix_Multiply_Scaled,'FT_Matrix_Multiply_Scaled',\ @128
FT_MulDiv,'FT_MulDiv',\ @129
FT_MulDiv_No_Round,'FT_MulDiv_No_Round',\ @130
FT_MulFix,'FT_MulFix',\ @131
FT_New_Face,'FT_New_Face',\ @132
FT_New_GlyphSlot,'FT_New_GlyphSlot',\ @133
FT_New_Library,'FT_New_Library',\ @134
FT_New_Memory,'FT_New_Memory',\ @135
FT_New_Memory_Face,'FT_New_Memory_Face',\ @136
FT_New_Size,'FT_New_Size',\ @137
FT_OpenType_Free,'FT_OpenType_Free',\ @138
FT_OpenType_Validate,'FT_OpenType_Validate',\ @139
FT_Open_Face,'FT_Open_Face',\ @140
FT_Outline_Check,'FT_Outline_Check',\ @141
FT_Outline_Copy,'FT_Outline_Copy',\ @142
FT_Outline_Decompose,'FT_Outline_Decompose',\ @143
FT_Outline_Done,'FT_Outline_Done',\ @144
FT_Outline_Done_Internal,'FT_Outline_Done_Internal',\ @145
FT_Outline_Embolden,'FT_Outline_Embolden',\ @146
FT_Outline_EmboldenXY,'FT_Outline_EmboldenXY',\ @147
FT_Outline_GetInsideBorder,'FT_Outline_GetInsideBorder',\ @148
FT_Outline_GetOutsideBorder,'FT_Outline_GetOutsideBorder',\ @149
FT_Outline_Get_BBox,'FT_Outline_Get_BBox',\ @150
FT_Outline_Get_Bitmap,'FT_Outline_Get_Bitmap',\ @151
FT_Outline_Get_CBox,'FT_Outline_Get_CBox',\ @152
FT_Outline_Get_Orientation,'FT_Outline_Get_Orientation',\ @153
FT_Outline_New,'FT_Outline_New',\ @154
FT_Outline_New_Internal,'FT_Outline_New_Internal',\ @155
FT_Outline_Render,'FT_Outline_Render',\ @156
FT_Outline_Reverse,'FT_Outline_Reverse',\ @157
FT_Outline_Transform,'FT_Outline_Transform',\ @158
FT_Outline_Translate,'FT_Outline_Translate',\ @159
FT_Property_Get,'FT_Property_Get',\ @160
FT_Property_Set,'FT_Property_Set',\ @161
FT_Raccess_Get_DataOffsets,'FT_Raccess_Get_DataOffsets',\ @162
FT_Raccess_Get_HeaderInfo,'FT_Raccess_Get_HeaderInfo',\ @163
FT_Raccess_Guess,'FT_Raccess_Guess',\ @164
FT_Reference_Face,'FT_Reference_Face',\ @165
FT_Reference_Library,'FT_Reference_Library',\ @166
FT_Remove_Module,'FT_Remove_Module',\ @167
FT_Render_Glyph,'FT_Render_Glyph',\ @168
FT_Render_Glyph_Internal,'FT_Render_Glyph_Internal',\ @169
FT_Request_Metrics,'FT_Request_Metrics',\ @170
FT_Request_Size,'FT_Request_Size',\ @171
FT_RoundFix,'FT_RoundFix',\ @172
FT_Select_Charmap,'FT_Select_Charmap',\ @173
FT_Select_Metrics,'FT_Select_Metrics',\ @174
FT_Select_Size,'FT_Select_Size',\ @175
FT_Set_Char_Size,'FT_Set_Char_Size',\ @176
FT_Set_Charmap,'FT_Set_Charmap',\ @177
FT_Set_Debug_Hook,'FT_Set_Debug_Hook',\ @178
FT_Set_MM_Blend_Coordinates,'FT_Set_MM_Blend_Coordinates',\ @179
FT_Set_MM_Design_Coordinates,'FT_Set_MM_Design_Coordinates',\ @180
FT_Set_Pixel_Sizes,'FT_Set_Pixel_Sizes',\ @181
FT_Set_Renderer,'FT_Set_Renderer',\ @182
FT_Set_Transform,'FT_Set_Transform',\ @183
FT_Set_Var_Blend_Coordinates,'FT_Set_Var_Blend_Coordinates',\ @184
FT_Set_Var_Design_Coordinates,'FT_Set_Var_Design_Coordinates',\ @185
FT_Sfnt_Table_Info,'FT_Sfnt_Table_Info',\ @186
FT_Sin,'FT_Sin',\ @187
FT_SqrtFixed,'FT_SqrtFixed',\ @188
FT_Stream_Close,'FT_Stream_Close',\ @189
FT_Stream_EnterFrame,'FT_Stream_EnterFrame',\ @190
FT_Stream_ExitFrame,'FT_Stream_ExitFrame',\ @191
FT_Stream_ExtractFrame,'FT_Stream_ExtractFrame',\ @192
FT_Stream_Free,'FT_Stream_Free',\ @193
FT_Stream_GetChar,'FT_Stream_GetChar',\ @194
FT_Stream_GetULong,'FT_Stream_GetULong',\ @195
FT_Stream_GetULongLE,'FT_Stream_GetULongLE',\ @196
FT_Stream_GetUOffset,'FT_Stream_GetUOffset',\ @197
FT_Stream_GetUShort,'FT_Stream_GetUShort',\ @198
FT_Stream_GetUShortLE,'FT_Stream_GetUShortLE',\ @199
FT_Stream_New,'FT_Stream_New',\ @200
FT_Stream_Open,'FT_Stream_Open',\ @201
FT_Stream_OpenBzip2,'FT_Stream_OpenBzip2',\ @202
FT_Stream_OpenGzip,'FT_Stream_OpenGzip',\ @203
FT_Stream_OpenLZW,'FT_Stream_OpenLZW',\ @204
FT_Stream_OpenMemory,'FT_Stream_OpenMemory',\ @205
FT_Stream_Pos,'FT_Stream_Pos',\ @206
FT_Stream_Read,'FT_Stream_Read',\ @207
FT_Stream_ReadAt,'FT_Stream_ReadAt',\ @208
FT_Stream_ReadChar,'FT_Stream_ReadChar',\ @209
FT_Stream_ReadFields,'FT_Stream_ReadFields',\ @210
FT_Stream_ReadULong,'FT_Stream_ReadULong',\ @211
FT_Stream_ReadULongLE,'FT_Stream_ReadULongLE',\ @212
FT_Stream_ReadUOffset,'FT_Stream_ReadUOffset',\ @213
FT_Stream_ReadUShort,'FT_Stream_ReadUShort',\ @214
FT_Stream_ReadUShortLE,'FT_Stream_ReadUShortLE',\ @215
FT_Stream_ReleaseFrame,'FT_Stream_ReleaseFrame',\ @216
FT_Stream_Seek,'FT_Stream_Seek',\ @217
FT_Stream_Skip,'FT_Stream_Skip',\ @218
FT_Stream_TryRead,'FT_Stream_TryRead',\ @219
FT_Stroker_BeginSubPath,'FT_Stroker_BeginSubPath',\ @220
FT_Stroker_ConicTo,'FT_Stroker_ConicTo',\ @221
FT_Stroker_CubicTo,'FT_Stroker_CubicTo',\ @222
FT_Stroker_Done,'FT_Stroker_Done',\ @223
FT_Stroker_EndSubPath,'FT_Stroker_EndSubPath',\ @224
FT_Stroker_Export,'FT_Stroker_Export',\ @225
FT_Stroker_ExportBorder,'FT_Stroker_ExportBorder',\ @226
FT_Stroker_GetBorderCounts,'FT_Stroker_GetBorderCounts',\ @227
FT_Stroker_GetCounts,'FT_Stroker_GetCounts',\ @228
FT_Stroker_LineTo,'FT_Stroker_LineTo',\ @229
FT_Stroker_New,'FT_Stroker_New',\ @230
FT_Stroker_ParseOutline,'FT_Stroker_ParseOutline',\ @231
FT_Stroker_Rewind,'FT_Stroker_Rewind',\ @232
FT_Stroker_Set,'FT_Stroker_Set',\ @233
FT_Tan,'FT_Tan',\ @234
FT_Trace_Get_Count,'FT_Trace_Get_Count',\ @235
FT_Trace_Get_Name,'FT_Trace_Get_Name',\ @236
FT_TrueTypeGX_Free,'FT_TrueTypeGX_Free',\ @237
FT_TrueTypeGX_Validate,'FT_TrueTypeGX_Validate',\ @238
FT_Vector_From_Polar,'FT_Vector_From_Polar',\ @239
FT_Vector_Length,'FT_Vector_Length',\ @240
FT_Vector_Polarize,'FT_Vector_Polarize',\ @241
FT_Vector_Rotate,'FT_Vector_Rotate',\ @242
FT_Vector_Transform,'FT_Vector_Transform',\ @243
FT_Vector_Transform_Scaled,'FT_Vector_Transform_Scaled',\ @244
FT_Vector_Unit,'FT_Vector_Unit',\ @245
TT_New_Context,'TT_New_Context',\ @246
TT_RunIns,'TT_RunIns',\ @247
__chkstk,'__chkstk',\ @248 DATA
__chkstk_ms,'__chkstk_ms',\ @249 DATA
_alloca,'_alloca',\ @250 DATA
af_autofitter_interface,'af_autofitter_interface',\ @251 DATA
af_cjk_script_class,'af_cjk_script_class',\ @252 DATA
af_dummy_script_class,'af_dummy_script_class',\ @253 DATA
af_glyph_hints_dump_edges,'af_glyph_hints_dump_edges',\ @254
af_glyph_hints_dump_points,'af_glyph_hints_dump_points',\ @255
af_glyph_hints_dump_segments,'af_glyph_hints_dump_segments',\ @256
af_glyph_hints_get_num_segments,'af_glyph_hints_get_num_segments',\ @257
af_glyph_hints_get_segment_offset,'af_glyph_hints_get_segment_offset',\ @258
af_indic_script_class,'af_indic_script_class',\ @259 DATA
af_latin_script_class,'af_latin_script_class',\ @260 DATA
af_property_get,'af_property_get',\ @261
af_property_get_face_globals,'af_property_get_face_globals',\ @262
af_property_set,'af_property_set',\ @263
afm_parser_funcs,'afm_parser_funcs',\ @264 DATA
autofit_module_class,'autofit_module_class',\ @265 DATA
bdf_cmap_class,'bdf_cmap_class',\ @266 DATA
bdf_driver_class,'bdf_driver_class',\ @267 DATA
cff_cmap_encoding_class_rec,'cff_cmap_encoding_class_rec',\ @268 DATA
cff_cmap_unicode_class_rec,'cff_cmap_unicode_class_rec',\ @269 DATA
cff_driver_class,'cff_driver_class',\ @270 DATA
ft_bitmap_glyph_class,'ft_bitmap_glyph_class',\ @271 DATA
ft_corner_is_flat,'ft_corner_is_flat',\ @272
ft_corner_orientation,'ft_corner_orientation',\ @273
ft_debug_init,'ft_debug_init',\ @274
ft_glyphslot_alloc_bitmap,'ft_glyphslot_alloc_bitmap',\ @275
ft_glyphslot_free_bitmap,'ft_glyphslot_free_bitmap',\ @276
ft_glyphslot_set_bitmap,'ft_glyphslot_set_bitmap',\ @277
ft_gray_for_premultiplied_srgb_bgra,'ft_gray_for_premultiplied_srgb_bgra',\ @278
ft_grays_raster,'ft_grays_raster',\ @279 DATA
ft_highpow2,'ft_highpow2',\ @280
ft_lzwstate_done,'ft_lzwstate_done',\ @281
ft_lzwstate_init,'ft_lzwstate_init',\ @282
ft_lzwstate_io,'ft_lzwstate_io',\ @283
ft_lzwstate_reset,'ft_lzwstate_reset',\ @284
ft_mem_alloc,'ft_mem_alloc',\ @285
ft_mem_dup,'ft_mem_dup',\ @286
ft_mem_free,'ft_mem_free',\ @287
ft_mem_qalloc,'ft_mem_qalloc',\ @288
ft_mem_qrealloc,'ft_mem_qrealloc',\ @289
ft_mem_realloc,'ft_mem_realloc',\ @290
ft_mem_strcpyn,'ft_mem_strcpyn',\ @291
ft_mem_strdup,'ft_mem_strdup',\ @292
ft_module_get_service,'ft_module_get_service',\ @293
ft_outline_glyph_class,'ft_outline_glyph_class',\ @294 DATA
ft_property_do,'ft_property_do',\ @295
ft_raccess_guess_table,'ft_raccess_guess_table',\ @296 DATA
ft_raster1_renderer_class,'ft_raster1_renderer_class',\ @297 DATA
ft_raster5_renderer_class,'ft_raster5_renderer_class',\ @298 DATA
ft_service_list_lookup,'ft_service_list_lookup',\ @299
ft_smooth_lcd_renderer_class,'ft_smooth_lcd_renderer_class',\ @300 DATA
ft_smooth_lcdv_renderer_class,'ft_smooth_lcdv_renderer_class',\ @301 DATA
ft_smooth_renderer_class,'ft_smooth_renderer_class',\ @302 DATA
ft_standard_raster,'ft_standard_raster',\ @303 DATA
ft_synthesize_vertical_metrics,'ft_synthesize_vertical_metrics',\ @304
ft_validator_error,'ft_validator_error',\ @305
ft_validator_init,'ft_validator_init',\ @306
ft_validator_run,'ft_validator_run',\ @307
ftc_basic_image_cache_class,'ftc_basic_image_cache_class',\ @308 DATA
ftc_basic_image_family_class,'ftc_basic_image_family_class',\ @309 DATA
ftc_basic_sbit_cache_class,'ftc_basic_sbit_cache_class',\ @310 DATA
ftc_basic_sbit_family_class,'ftc_basic_sbit_family_class',\ @311 DATA
ftc_cmap_cache_class,'ftc_cmap_cache_class',\ @312 DATA
ftc_face_list_class,'ftc_face_list_class',\ @313 DATA
ftc_size_list_class,'ftc_size_list_class',\ @314 DATA
longjmp,'longjmp',\ @315
otv_module_class,'otv_module_class',\ @316 DATA
pcf_cmap_class,'pcf_cmap_class',\ @317 DATA
pcf_driver_class,'pcf_driver_class',\ @318 DATA
pfr_cmap_class_rec,'pfr_cmap_class_rec',\ @319 DATA
pfr_driver_class,'pfr_driver_class',\ @320 DATA
pfr_metrics_service_rec,'pfr_metrics_service_rec',\ @321 DATA
ps_hints_apply,'ps_hints_apply',\ @322
ps_parser_funcs,'ps_parser_funcs',\ @323 DATA
ps_table_funcs,'ps_table_funcs',\ @324 DATA
psaux_module_class,'psaux_module_class',\ @325 DATA
pshinter_module_class,'pshinter_module_class',\ @326 DATA
psnames_module_class,'psnames_module_class',\ @327 DATA
setjmp,'setjmp',\ @328
sfnt_module_class,'sfnt_module_class',\ @329 DATA
t1_builder_funcs,'t1_builder_funcs',\ @330 DATA
t1_cmap_classes,'t1_cmap_classes',\ @331 DATA
t1_cmap_custom_class_rec,'t1_cmap_custom_class_rec',\ @332 DATA
t1_cmap_expert_class_rec,'t1_cmap_expert_class_rec',\ @333 DATA
t1_cmap_standard_class_rec,'t1_cmap_standard_class_rec',\ @334 DATA
t1_cmap_unicode_class_rec,'t1_cmap_unicode_class_rec',\ @335 DATA
t1_decoder_funcs,'t1_decoder_funcs',\ @336 DATA
t1_driver_class,'t1_driver_class',\ @337 DATA
t1cid_driver_class,'t1cid_driver_class',\ @338 DATA
t42_driver_class,'t42_driver_class',\ @339 DATA
tt_cmap0_class_rec,'tt_cmap0_class_rec',\ @340 DATA
tt_cmap10_class_rec,'tt_cmap10_class_rec',\ @341 DATA
tt_cmap12_class_rec,'tt_cmap12_class_rec',\ @342 DATA
tt_cmap13_class_rec,'tt_cmap13_class_rec',\ @343 DATA
tt_cmap14_class_rec,'tt_cmap14_class_rec',\ @344 DATA
tt_cmap2_class_rec,'tt_cmap2_class_rec',\ @345 DATA
tt_cmap4_class_rec,'tt_cmap4_class_rec',\ @346 DATA
tt_cmap6_class_rec,'tt_cmap6_class_rec',\ @347 DATA
tt_cmap8_class_rec,'tt_cmap8_class_rec',\ @348 DATA
tt_default_graphics_state,'tt_default_graphics_state',\ @349 DATA
tt_driver_class,'tt_driver_class',\ @350 DATA
winfnt_driver_class,'winfnt_driver_class',\ @351 DATA

/contrib/sdk/sources/libpng/Makefile
1,17 → 1,17
LIBRARY= libpng16
CC = kos32-gcc
AR = kos32-ar
LD = kos32-ld
STRIP = kos32-strip
CC=gcc
CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fomit-frame-pointer
CFLAGS = -UWIN32 -UWindows -U_WINDOWS -U_WIN32 -U__WIN32__ -c -O2 -fomit-frame-pointer
LD = ld
LDFLAGS= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0
LDFLAGS+= --out-implib $(LIBRARY).dll.a
AR= ar
ARFLAGS:= crs
STRIP = $(PREFIX)strip
LDFLAGS:= -shared -s -nostdlib -T ../newlib/dll.lds --entry _DllStartup --image-base=0 --out-implib $(LIBRARY).dll.a
INCLUDES= -I. -I../newlib/include -I../zlib
LIBPATH:= -L../../lib
46,14 → 46,14
ebox:$(LIBRARY).a $(LIBRARY).dll
$(LIBRARY).a: $(OBJECTS) Makefile
$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJECTS)
ar cvrs $(LIBRARY).a $(OBJECTS)
mv -f $(LIBRARY).a ../../lib
$(LIBRARY).dll: libpng16.def $(OBJECTS) Makefile
$(LD) $(LDFLAGS) $(LIBPATH) -o $@ libpng16.def $(OBJECTS) $(LIBS)
$(STRIP) $@
#sed -f ../newlib/cmd1.sed libpng16.def > mem
#sed -f ../newlib/cmd2.sed mem >libpng.inc
sed -f ../newlib/cmd1.sed libpng16.def > mem
sed -f ../newlib/cmd2.sed mem >libpng.inc
mv -f $@ ../../bin
mv -f $(LIBRARY).dll.a ../../lib

/contrib/sdk/sources/libpng/mem
0,0 → 1,242
EXPORTS,'EXPORTS',\
png_access_version_number,'png_access_version_number',\
png_set_sig_bytes,'png_set_sig_bytes',\
png_sig_cmp,'png_sig_cmp',\
png_create_read_struct,'png_create_read_struct',\
png_create_write_struct,'png_create_write_struct',\
png_get_compression_buffer_size,'png_get_compression_buffer_size',\
png_set_compression_buffer_size,'png_set_compression_buffer_size',\
png_set_longjmp_fn,'png_set_longjmp_fn',\
png_longjmp,'png_longjmp',\
png_reset_zstream,'png_reset_zstream',\
png_create_read_struct_2,'png_create_read_struct_2',\
png_create_write_struct_2,'png_create_write_struct_2',\
png_write_sig,'png_write_sig',\
png_write_chunk,'png_write_chunk',\
png_write_chunk_start,'png_write_chunk_start',\
png_write_chunk_data,'png_write_chunk_data',\
png_write_chunk_end,'png_write_chunk_end',\
png_create_info_struct,'png_create_info_struct',\
png_info_init_3,'png_info_init_3',\
png_write_info_before_PLTE,'png_write_info_before_PLTE',\
png_write_info,'png_write_info',\
png_read_info,'png_read_info',\
png_convert_to_rfc1123,'png_convert_to_rfc1123',\
png_convert_to_rfc1123_buffer,'png_convert_to_rfc1123_buffer',\
png_convert_from_struct_tm,'png_convert_from_struct_tm',\
png_convert_from_time_t,'png_convert_from_time_t',\
png_set_expand,'png_set_expand',\
png_set_expand_gray_1_2_4_to_8,'png_set_expand_gray_1_2_4_to_8',\
png_set_palette_to_rgb,'png_set_palette_to_rgb',\
png_set_tRNS_to_alpha,'png_set_tRNS_to_alpha',\
png_set_expand_16,'png_set_expand_16',\
png_set_bgr,'png_set_bgr',\
png_set_gray_to_rgb,'png_set_gray_to_rgb',\
png_set_rgb_to_gray,'png_set_rgb_to_gray',\
png_set_rgb_to_gray_fixed,'png_set_rgb_to_gray_fixed',\
png_get_rgb_to_gray_status,'png_get_rgb_to_gray_status',\
png_build_grayscale_palette,'png_build_grayscale_palette',\
png_set_alpha_mode,'png_set_alpha_mode',\
png_set_alpha_mode_fixed,'png_set_alpha_mode_fixed',\
png_set_strip_alpha,'png_set_strip_alpha',\
png_set_swap_alpha,'png_set_swap_alpha',\
png_set_invert_alpha,'png_set_invert_alpha',\
png_set_filler,'png_set_filler',\
png_set_add_alpha,'png_set_add_alpha',\
png_set_swap,'png_set_swap',\
png_set_packing,'png_set_packing',\
png_set_packswap,'png_set_packswap',\
png_set_shift,'png_set_shift',\
png_set_interlace_handling,'png_set_interlace_handling',\
png_set_invert_mono,'png_set_invert_mono',\
png_set_background,'png_set_background',\
png_set_background_fixed,'png_set_background_fixed',\
png_set_scale_16,'png_set_scale_16',\
png_set_strip_16,'png_set_strip_16',\
png_set_quantize,'png_set_quantize',\
png_set_gamma,'png_set_gamma',\
png_set_gamma_fixed,'png_set_gamma_fixed',\
png_set_flush,'png_set_flush',\
png_write_flush,'png_write_flush',\
png_start_read_image,'png_start_read_image',\
png_read_update_info,'png_read_update_info',\
png_read_rows,'png_read_rows',\
png_read_row,'png_read_row',\
png_read_image,'png_read_image',\
png_write_row,'png_write_row',\
png_write_rows,'png_write_rows',\
png_write_image,'png_write_image',\
png_write_end,'png_write_end',\
png_read_end,'png_read_end',\
png_destroy_info_struct,'png_destroy_info_struct',\
png_destroy_read_struct,'png_destroy_read_struct',\
png_destroy_write_struct,'png_destroy_write_struct',\
png_set_crc_action,'png_set_crc_action',\
png_set_filter,'png_set_filter',\
png_set_filter_heuristics,'png_set_filter_heuristics',\
png_set_filter_heuristics_fixed,'png_set_filter_heuristics_fixed',\
png_set_compression_level,'png_set_compression_level',\
png_set_compression_mem_level,'png_set_compression_mem_level',\
png_set_compression_strategy,'png_set_compression_strategy',\
png_set_compression_window_bits,'png_set_compression_window_bits',\
png_set_compression_method,'png_set_compression_method',\
png_set_text_compression_level,'png_set_text_compression_level',\
png_set_text_compression_mem_level,'png_set_text_compression_mem_level',\
png_set_text_compression_strategy,'png_set_text_compression_strategy',\
png_set_text_compression_window_bits,'png_set_text_compression_window_bits',\
png_set_text_compression_method,'png_set_text_compression_method',\
png_init_io,'png_init_io',\
png_set_error_fn,'png_set_error_fn',\
png_get_error_ptr,'png_get_error_ptr',\
png_set_write_fn,'png_set_write_fn',\
png_set_read_fn,'png_set_read_fn',\
png_get_io_ptr,'png_get_io_ptr',\
png_set_read_status_fn,'png_set_read_status_fn',\
png_set_write_status_fn,'png_set_write_status_fn',\
png_set_mem_fn,'png_set_mem_fn',\
png_get_mem_ptr,'png_get_mem_ptr',\
png_set_read_user_transform_fn,'png_set_read_user_transform_fn',\
png_set_write_user_transform_fn,'png_set_write_user_transform_fn',\
png_set_user_transform_info,'png_set_user_transform_info',\
png_get_user_transform_ptr,'png_get_user_transform_ptr',\
png_get_current_row_number,'png_get_current_row_number',\
png_get_current_pass_number,'png_get_current_pass_number',\
png_set_read_user_chunk_fn,'png_set_read_user_chunk_fn',\
png_get_user_chunk_ptr,'png_get_user_chunk_ptr',\
png_set_progressive_read_fn,'png_set_progressive_read_fn',\
png_get_progressive_ptr,'png_get_progressive_ptr',\
png_process_data,'png_process_data',\
png_process_data_pause,'png_process_data_pause',\
png_process_data_skip,'png_process_data_skip',\
png_progressive_combine_row,'png_progressive_combine_row',\
png_malloc,'png_malloc',\
png_calloc,'png_calloc',\
png_malloc_warn,'png_malloc_warn',\
png_free,'png_free',\
png_free_data,'png_free_data',\
png_data_freer,'png_data_freer',\
png_malloc_default,'png_malloc_default',\
png_free_default,'png_free_default',\
png_error,'png_error',\
png_chunk_error,'png_chunk_error',\
png_warning,'png_warning',\
png_chunk_warning,'png_chunk_warning',\
png_benign_error,'png_benign_error',\
png_chunk_benign_error,'png_chunk_benign_error',\
png_set_benign_errors,'png_set_benign_errors',\
png_get_valid,'png_get_valid',\
png_get_rowbytes,'png_get_rowbytes',\
png_get_rows,'png_get_rows',\
png_set_rows,'png_set_rows',\
png_get_channels,'png_get_channels',\
png_get_image_width,'png_get_image_width',\
png_get_image_height,'png_get_image_height',\
png_get_bit_depth,'png_get_bit_depth',\
png_get_color_type,'png_get_color_type',\
png_get_filter_type,'png_get_filter_type',\
png_get_interlace_type,'png_get_interlace_type',\
png_get_compression_type,'png_get_compression_type',\
png_get_pixels_per_meter,'png_get_pixels_per_meter',\
png_get_x_pixels_per_meter,'png_get_x_pixels_per_meter',\
png_get_y_pixels_per_meter,'png_get_y_pixels_per_meter',\
png_get_pixel_aspect_ratio,'png_get_pixel_aspect_ratio',\
png_get_pixel_aspect_ratio_fixed,'png_get_pixel_aspect_ratio_fixed',\
png_get_x_offset_pixels,'png_get_x_offset_pixels',\
png_get_y_offset_pixels,'png_get_y_offset_pixels',\
png_get_x_offset_microns,'png_get_x_offset_microns',\
png_get_y_offset_microns,'png_get_y_offset_microns',\
png_get_signature,'png_get_signature',\
png_get_bKGD,'png_get_bKGD',\
png_set_bKGD,'png_set_bKGD',\
png_get_cHRM,'png_get_cHRM',\
png_get_cHRM_XYZ,'png_get_cHRM_XYZ',\
png_get_cHRM_fixed,'png_get_cHRM_fixed',\
png_get_cHRM_XYZ_fixed,'png_get_cHRM_XYZ_fixed',\
png_set_cHRM,'png_set_cHRM',\
png_set_cHRM_XYZ,'png_set_cHRM_XYZ',\
png_set_cHRM_fixed,'png_set_cHRM_fixed',\
png_set_cHRM_XYZ_fixed,'png_set_cHRM_XYZ_fixed',\
png_get_gAMA,'png_get_gAMA',\
png_get_gAMA_fixed,'png_get_gAMA_fixed',\
png_set_gAMA,'png_set_gAMA',\
png_set_gAMA_fixed,'png_set_gAMA_fixed',\
png_get_hIST,'png_get_hIST',\
png_set_hIST,'png_set_hIST',\
png_get_IHDR,'png_get_IHDR',\
png_set_IHDR,'png_set_IHDR',\
png_get_oFFs,'png_get_oFFs',\
png_set_oFFs,'png_set_oFFs',\
png_get_pCAL,'png_get_pCAL',\
png_set_pCAL,'png_set_pCAL',\
png_get_pHYs,'png_get_pHYs',\
png_set_pHYs,'png_set_pHYs',\
png_get_PLTE,'png_get_PLTE',\
png_set_PLTE,'png_set_PLTE',\
png_get_sBIT,'png_get_sBIT',\
png_set_sBIT,'png_set_sBIT',\
png_get_sRGB,'png_get_sRGB',\
png_set_sRGB,'png_set_sRGB',\
png_set_sRGB_gAMA_and_cHRM,'png_set_sRGB_gAMA_and_cHRM',\
png_get_iCCP,'png_get_iCCP',\
png_set_iCCP,'png_set_iCCP',\
png_get_sPLT,'png_get_sPLT',\
png_set_sPLT,'png_set_sPLT',\
png_get_text,'png_get_text',\
png_set_text,'png_set_text',\
png_get_tIME,'png_get_tIME',\
png_set_tIME,'png_set_tIME',\
png_get_tRNS,'png_get_tRNS',\
png_set_tRNS,'png_set_tRNS',\
png_get_sCAL,'png_get_sCAL',\
png_get_sCAL_fixed,'png_get_sCAL_fixed',\
png_get_sCAL_s,'png_get_sCAL_s',\
png_set_sCAL,'png_set_sCAL',\
png_set_sCAL_fixed,'png_set_sCAL_fixed',\
png_set_sCAL_s,'png_set_sCAL_s',\
png_set_keep_unknown_chunks,'png_set_keep_unknown_chunks',\
png_handle_as_unknown,'png_handle_as_unknown',\
png_set_unknown_chunks,'png_set_unknown_chunks',\
png_set_unknown_chunk_location,'png_set_unknown_chunk_location',\
png_get_unknown_chunks,'png_get_unknown_chunks',\
png_set_invalid,'png_set_invalid',\
png_read_png,'png_read_png',\
png_write_png,'png_write_png',\
png_get_copyright,'png_get_copyright',\
png_get_header_ver,'png_get_header_ver',\
png_get_header_version,'png_get_header_version',\
png_get_libpng_ver,'png_get_libpng_ver',\
png_permit_mng_features,'png_permit_mng_features',\
png_set_user_limits,'png_set_user_limits',\
png_get_user_width_max,'png_get_user_width_max',\
png_get_user_height_max,'png_get_user_height_max',\
png_set_chunk_cache_max,'png_set_chunk_cache_max',\
png_get_chunk_cache_max,'png_get_chunk_cache_max',\
png_set_chunk_malloc_max,'png_set_chunk_malloc_max',\
png_get_chunk_malloc_max,'png_get_chunk_malloc_max',\
png_get_pixels_per_inch,'png_get_pixels_per_inch',\
png_get_x_pixels_per_inch,'png_get_x_pixels_per_inch',\
png_get_y_pixels_per_inch,'png_get_y_pixels_per_inch',\
png_get_x_offset_inches,'png_get_x_offset_inches',\
png_get_x_offset_inches_fixed,'png_get_x_offset_inches_fixed',\
png_get_y_offset_inches,'png_get_y_offset_inches',\
png_get_y_offset_inches_fixed,'png_get_y_offset_inches_fixed',\
png_get_pHYs_dpi,'png_get_pHYs_dpi',\
png_get_io_state,'png_get_io_state',\
png_get_io_chunk_type,'png_get_io_chunk_type',\
png_get_uint_32,'png_get_uint_32',\
png_get_uint_16,'png_get_uint_16',\
png_get_int_32,'png_get_int_32',\
png_get_uint_31,'png_get_uint_31',\
png_save_uint_32,'png_save_uint_32',\
png_save_int_32,'png_save_int_32',\
png_save_uint_16,'png_save_uint_16',\
png_image_begin_read_from_file,'png_image_begin_read_from_file',\
png_image_begin_read_from_stdio,'png_image_begin_read_from_stdio',\
png_image_begin_read_from_memory,'png_image_begin_read_from_memory',\
png_image_finish_read,'png_image_finish_read',\
png_image_free,'png_image_free',\
png_image_write_to_file,'png_image_write_to_file',\
png_image_write_to_stdio,'png_image_write_to_stdio',\
png_set_check_for_invalid_index,'png_set_check_for_invalid_index',\
png_get_palette_max,'png_get_palette_max',\
png_set_option,'png_set_option',\