Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. #!/usr/bin/env perl
  2.  
  3. # Copyright (c) 2014 Nicolas George
  4. #
  5. # This file is part of FFmpeg.
  6. #
  7. # FFmpeg is free software; you can redistribute it and/or
  8. # modify it under the terms of the GNU Lesser General Public License
  9. # as published by the Free Software Foundation; either
  10. # version 2.1 of the License, or (at your option) any later version.
  11. #
  12. # FFmpeg is distributed in the hope that it will be useful,
  13. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15. # GNU Lesser General Public License for more details.
  16. #
  17. # You should have received a copy of the GNU Lesser General Public License
  18. # along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
  19. # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  
  21. =head1 NAME
  22.  
  23. dvd2concat - create a concat script for a DVD title
  24.  
  25. =head1 SYNOPSIS
  26.  
  27. tools/dvd2concat I<path/to/dvd/structure> > I<file.concat>
  28.  
  29. =head1 DESCRIPTION
  30.  
  31. This script uses B<lsdvd> to produce concat script for a DVD title.
  32. The resulting script can be used to play the DVD using B<ffplay>, to
  33. transcode it using B<ffmpeg> or any other similar use.
  34.  
  35. I<path/to/dvd/structure> is the path to the DVD structure hierarchy; it
  36. normally contains a directory named B<VIDEO_TS>. It must not be encrypted
  37. with CSS.
  38.  
  39. I<file.concat> is the output file. It can be used a input to ffmpeg.
  40. It will require the B<-safe 0> option.
  41.  
  42. =cut
  43.  
  44. use strict;
  45. use warnings;
  46. use Getopt::Long ":config" => "require_order";
  47. use Pod::Usage;
  48.  
  49. my $title;
  50.  
  51. GetOptions (
  52.   "help|usage|?|h" => sub { pod2usage({ -verbose => 1, -exitval => 0 }) },
  53.   "manpage|m"      => sub { pod2usage({ -verbose => 2, -exitval => 0 }) },
  54.   "title|t=i"      => \$title,
  55. ) and @ARGV == 1 or pod2usage({ -verbose => 1, -exitval => 1 });
  56. my ($path) = @ARGV;
  57.  
  58. my $lsdvd_message =
  59. "Make sure your lsdvd version has the two following patches applied:\n" .
  60. "http://sourceforge.net/p/lsdvd/feature-requests/1/\n" .
  61. "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603826\n";
  62.  
  63. my $lsdvd = do {
  64.   open my $l, "-|", "lsdvd", "-Op", "-x", $path
  65.     or die "You need to install lsdvd for this script to work.\n$lsdvd_message";
  66.   local $/;
  67.   <$l>;
  68. };
  69. my %lsdvd = eval $lsdvd;
  70. die $@ if $@;
  71.  
  72. if (!defined $title) {
  73.   $title = $lsdvd{longest_track};
  74.   warn "Using longest title $title\n";
  75. }
  76. my $track = $lsdvd{track}[$title - 1]
  77.   or die "Title $title does not exist (1-", scalar(@{$lsdvd{track}}), ")\n";
  78. my $vts_base = sprintf "%s/VIDEO_TS/VTS_%02d_", $path, $track->{vts};
  79. my @frag;
  80. for my $i (1 .. 9) {
  81.   my $file = sprintf "%s%d.VOB", $vts_base, $i;
  82.   my $size = -s $file or last;
  83.   push @frag, { file => $file, size => $size >> 11 };
  84. }
  85.  
  86. my $concat = "ffconcat version 1.0\n";
  87. $concat .= "\nstream\nexact_stream_id 0x1E0\n";
  88. for my $audio (@{$track->{audio}}) {
  89.   $concat .= "\nstream\nexact_stream_id " . $audio->{streamid} . "\n";
  90. }
  91. for my $subp (@{$track->{subp}}) {
  92.   $concat .= "\nstream\nexact_stream_id " . $subp->{streamid} . "\n";
  93. }
  94. for my $cell (@{$track->{cell}}) {
  95.   my $off = $cell->{first_sector};
  96.   die "Your lsdvd version does not print cell sectors.\n$lsdvd_message"
  97.     unless defined $off;
  98.   my $size = $cell->{last_sector} + 1 - $cell->{first_sector};
  99.  
  100.   my $frag = 0;
  101.   while ($frag < @frag) {
  102.     last if $off < $frag[$frag]->{size};
  103.     $off -= $frag[$frag++]->{size};
  104.   }
  105.   die "Cell beyond VOB data\n" unless $frag < @frag;
  106.   my $cur_off = $off;
  107.   my $cur_size = $size;
  108.   my @files;
  109.   while ($cur_size > $frag[$frag]->{size} - $cur_off) {
  110.     push @files, $frag[$frag]->{file};
  111.     $cur_size -= $frag[$frag]->{size} - $cur_off;
  112.     $cur_off = 0;
  113.     die "Cell end beyond VOB data\n" unless ++$frag < @frag;
  114.   }
  115.   push @files, $frag[$frag]->{file};
  116.   my $file = @files == 1 ? $files[0] : "concat:" . join("|", @files);
  117.   my $start = $off << 11;
  118.   my $end = ($off + $size) << 11;
  119.   $file = "subfile,,start,${start},end,${end},,:$file";
  120.  
  121.   my $dur = int(1000 * $cell->{length});
  122.   $concat .= sprintf "\nfile '%s'\nduration %02d:%02d:%02d.%03d\n", $file,
  123.     int($dur / 3600000), int($dur / 60000) % 60, int($dur / 1000) % 60,
  124.     $dur % 1000;
  125. }
  126.  
  127. print $concat;
  128.