Commit | Line | Data |
---|---|---|
2ba45a60 DM |
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; |