#!/usr/bin/env perl # Copyright (c) 2014 Nicolas George # # 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 =head1 NAME dvd2concat - create a concat script for a DVD title =head1 SYNOPSIS tools/dvd2concat I<path/to/dvd/structure> > I<file.concat> =head1 DESCRIPTION This script uses B<lsdvd> to produce concat script for a DVD title. The resulting script can be used to play the DVD using B<ffplay>, to transcode it using B<ffmpeg> or any other similar use. I<path/to/dvd/structure> is the path to the DVD structure hierarchy; it normally contains a directory named B<VIDEO_TS>. It must not be encrypted with CSS. I<file.concat> is the output file. It can be used as an input to ffmpeg. It will require the B<-safe 0> option. =cut use strict; use warnings; use Getopt::Long ":config" => "require_order"; use Pod::Usage; my $title; GetOptions ( "help|usage|?|h" => sub { pod2usage({ -verbose => 1, -exitval => 0 }) }, "manpage|m" => sub { pod2usage({ -verbose => 2, -exitval => 0 }) }, "title|t=i" => \$title, ) and @ARGV == 1 or pod2usage({ -verbose => 1, -exitval => 1 }); my ($path) = @ARGV; my $lsdvd_message = "Make sure your lsdvd version has the two following patches applied:\n" . "http://sourceforge.net/p/lsdvd/feature-requests/1/\n" . "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603826\n"; my $lsdvd = do { open my $l, "-|", "lsdvd", "-Op", "-x", $path or die "You need to install lsdvd for this script to work.\n$lsdvd_message"; local $/; <$l>; }; my %lsdvd = eval $lsdvd; die $@ if $@; if (!defined $title) { $title = $lsdvd{longest_track}; warn "Using longest title $title\n"; } my $track = $lsdvd{track}[$title - 1] or die "Title $title does not exist (1-", scalar(@{$lsdvd{track}}), ")\n"; my $vts_base = sprintf "%s/VIDEO_TS/VTS_%02d_", $path, $track->{vts}; my @frag; for my $i (1 .. 9) { my $file = sprintf "%s%d.VOB", $vts_base, $i; my $size = -s $file or last; push @frag, { file => $file, size => $size >> 11 }; } my $concat = "ffconcat version 1.0\n"; $concat .= "\nstream\nexact_stream_id 0x1E0\n"; for my $audio (@{$track->{audio}}) { $concat .= "\nstream\nexact_stream_id " . $audio->{streamid} . "\n"; } for my $subp (@{$track->{subp}}) { $concat .= "\nstream\nexact_stream_id " . $subp->{streamid} . "\n"; } for my $cell (@{$track->{cell}}) { my $off = $cell->{first_sector}; die "Your lsdvd version does not print cell sectors.\n$lsdvd_message" unless defined $off; my $size = $cell->{last_sector} + 1 - $cell->{first_sector}; my $frag = 0; while ($frag < @frag) { last if $off < $frag[$frag]->{size}; $off -= $frag[$frag++]->{size}; } die "Cell beyond VOB data\n" unless $frag < @frag; my $cur_off = $off; my $cur_size = $size; my @files; while ($cur_size > $frag[$frag]->{size} - $cur_off) { push @files, $frag[$frag]->{file}; $cur_size -= $frag[$frag]->{size} - $cur_off; $cur_off = 0; die "Cell end beyond VOB data\n" unless ++$frag < @frag; } push @files, $frag[$frag]->{file}; my $file = @files == 1 ? $files[0] : "concat:" . join("|", @files); my $start = $off << 11; my $end = ($off + $size) << 11; $file = "subfile,,start,${start},end,${end},,:$file"; my $dur = int(1000 * $cell->{length}); $concat .= sprintf "\nfile '%s'\nduration %02d:%02d:%02d.%03d\n", $file, int($dur / 3600000), int($dur / 60000) % 60, int($dur / 1000) % 60, $dur % 1000; } print $concat;