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  1. =encoding utf8
  2.  
  3. =head1 NAME
  4.  
  5. libswscale - video scaling and pixel format conversion library
  6.  
  7. =head1 DESCRIPTION
  8.  
  9.  
  10. The libswscale library performs highly optimized image scaling and
  11. colorspace and pixel format conversion operations.
  12.  
  13. Specifically, this library performs the following conversions:
  14.  
  15.  
  16. =over 4
  17.  
  18.  
  19. =item *
  20.  
  21. I<Rescaling>: is the process of changing the video size. Several
  22. rescaling options and algorithms are available. This is usually a
  23. lossy process.
  24.  
  25.  
  26. =item *
  27.  
  28. I<Pixel format conversion>: is the process of converting the image
  29. format and colorspace of the image, for example from planar YUV420P to
  30. RGB24 packed. It also handles packing conversion, that is converts
  31. from packed layout (all pixels belonging to distinct planes
  32. interleaved in the same buffer), to planar layout (all samples
  33. belonging to the same plane stored in a dedicated buffer or "plane").
  34.  
  35. This is usually a lossy process in case the source and destination
  36. colorspaces differ.
  37.  
  38. =back
  39.  
  40.  
  41.  
  42.  
  43. =head1 SEE ALSO
  44.  
  45.  
  46.  
  47. ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
  48. ffmpeg-scaler(1),
  49. libavutil(3)
  50.  
  51.  
  52. =head1 AUTHORS
  53.  
  54.  
  55. The FFmpeg developers.
  56.  
  57. For details about the authorship, see the Git history of the project
  58. (git://source.ffmpeg.org/ffmpeg), e.g. by typing the command
  59. B<git log> in the FFmpeg source directory, or browsing the
  60. online repository at E<lt>B<http://source.ffmpeg.org>E<gt>.
  61.  
  62. Maintainers for the specific components are listed in the file
  63. F<MAINTAINERS> in the source code tree.
  64.  
  65.  
  66.  
  67.