Code:
#!/usr/bin/perl
#######################################################################
#
# File: mkv2mp4.pl
# Author(s): Justin Randall (randall311 AT yahoo DOT com)
# Josh Carroll (josh.carroll AT gmail DOT com)
# Version: 0.1
# Created: 29 April 2008
# Last Change: Wed May 14 10:00 PM 2008 EDT
# Description: This script takes an MKV file as input and produces
# a MP4 (h264/aac) which will play back on the
# Sony PlayStation 3 (tm)
# Usage: mkv2mp4.pl <maktrosa input file>
# History: none
#
# Copyright (c) 2008 by Josh Carroll (josh.carroll AT gmail DOT com)
# under the name mkv4ps3. This is a highly modified version used to
# produce an MP4 (h264/aac) from a mkv file in an automated fashion
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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.
#
#######################################################################
use warnings;
use strict;
use Getopt::Long;
use POSIX qw(floor);
use Cwd qw(realpath);
use File::Basename;
my $prog = $0;
$prog =~ s/.*\///img;
if ($#ARGV != 0) {
print "Usage: $prog <maktrosa input file>\n";
exit 0;
}
# set the input based off the command arguments
my $opt_in = $ARGV[0];
my($name, $path, $suffix) = fileparse($opt_in, qr{\..*});
if ($suffix eq '') {
print "input file did not contain a suffix!\n";
exit -1;
}
# remove file extension from input file
my $char = 0;
my $basename = $opt_in;
while ($char ne '.') {
$char = chop $basename;
}
# temoprary files and variables
my $opt_tmp = $basename;
$opt_tmp = "$opt_tmp";
my $opt_out = "$basename.mp4";
my $tmp_ac3 = "$name.ac3";
my $tmp_dts = "$name.dts";
my $tmp_h264 = "$name.h264";
my $tmp_wav_fifo = "$name.wav";
my $tmp_aac = "$name.aac";
my $tmp_mp4 = "t.$name.mp4";
# make sure we have all the tools
check_required_tools();
# make sure the mkv file is correct format
tprint("Checking input file format...\n");
check_resolution($opt_in);
tprint("Extracting mkv file...\n");
# get the fps of the video and the duration (in seconds) of the MKV, and
# extract the mkv (if only re-muxing to mp4 with aac)
my ($vid_fps,$duration,$audio_file,$channels) = extract_mkv($opt_in, $tmp_h264, 0,0);
# modify h264 header to change level_idc to 0x29
tprint("Changing h.264 stream's level_idc header...\n");
change_h264_level($tmp_h264);
tprint("Converting audio to aac...\n");
conv_to_aac($audio_file, $tmp_aac, $channels);
tprint("Creating mp4 file ($opt_out)...\n");
create_mp4($tmp_h264, $tmp_aac, $vid_fps, $tmp_mp4, $opt_out);
# cleanup and finsh processing
tprint("Cleaning up tmp files...\n");
tprint("(files $tmp_ac3,$tmp_h264,$tmp_wav_fifo,$tmp_aac,$tmp_mp4) ... \n");
unlink($tmp_ac3,$tmp_h264,$tmp_wav_fifo,$tmp_aac,$tmp_mp4);
tprint("Done!\n");
##############################################################################
# check the mkv file format
##############################################################################
sub check_resolution {
my $mkv = shift;
my $output = `mkvinfo "$mkv" 2>&1`;
chomp($output);
my $width = 0;
if($output =~ /Pixel width:\s+(\d+)/i) {
$width = $1;
print "MSG - MkvInfo pixel width - $width \n";
}
if($width == 0) {
print "Could not determine video width. mkvinfo parsing failed. mkvinfo output:\n\n$output\n";
exit 1;
}
my $height = 0;
if($output =~ /Pixel height:\s+(\d+)/i) {
$height = $1;
print "MSG - MkvInfo pixel height - $height \n";
}
if($height == 0) {
print "Could not determine video width. mkvinfo parsing failed. mkvinfo output:\n\n$output\n";
exit 1;
}
#if($height % 16) {
# print "Error, height must be a multiple of 16 for the PS3 to recognize the file.\n";
# print "Consider using ffmpeg/mencoder to crop this video first.\n";
# exit 1;
#}
}
##############################################################################
# extract the video and audio raw tracks from the mkv continer
##############################################################################
sub extract_mkv {
my ($in, $h264, $dont_extract, $channels) = @_;
my $fps = -1;
my $duration = -1;
my $type = undef;
my $audio_type = undef;
my $video_type = undef;
my ($audio_track_num, $h264_track_num) = (-1, -1);
my ($found_video, $found_audio) = (0,0);
my $cur_audio = 0;
my $cur_video = 0;
# find out which track is which
my $curr_track_num = -1;
my @output = `mkvinfo "$in" 2>&1`;
chomp(@output);
foreach my $line (@output) {
if($found_video && $channels && $found_audio && $fps != -1 && defined $audio_type) {
last;
}
if($line =~ /Default duration.*\((\d+\.\d+)\s*fps/i) {
my $tmp = $1;
if($type =~ /video/i) {
$fps = $tmp;
}
} elsif($line =~ /^\s*\|\s*\+\s*Duration:\s*(\d+\.\d+)\s*s\s+/i) {
$duration = $1;
} elsif($line =~ /Track number:\s+(\d+)/i) {
$curr_track_num = $1;
next;
} elsif($line =~ /Track type:\s+(\S+)/i) {
if($curr_track_num == -1) {
# we haven't found the track # yet, but we found the type.
# this shouldn't happen
print "Error, mkvinfo failed.\n";
exit 1;
}
$type = $1;
if($type =~ /audio/i) {
if(! $found_audio) {
$audio_track_num = $curr_track_num;
$found_audio = 1;
$cur_video = 0;
$cur_audio = 1;
}
} else {
if(! $found_video) {
$h264_track_num = $curr_track_num;
$found_video = 1;
$cur_video = 1;
$cur_audio = 0;
}
}
} elsif($found_audio && $cur_audio && $line =~ /Codec ID:\s+(\S+)/i) {
$audio_type = $1;
print "MSG - MkvInfo Audio - $audio_type Track: $audio_track_num\n";
} elsif($found_video && $cur_video && $line =~ /Codec ID:\s+(\S+)/i) {
$video_type = $1;
print "MSG - MkvInfo Video - $video_type Track: $h264_track_num\n";
}
if ($line =~ /Channels:\s+(\d+)/i) {
$channels = $1;
if ($channels == 6) {
print "MSG - MkvInfo Audio Channels - (Dolby 5.1 / DTS)\n";
} else {
print "MSG - MkvInfo Audio Channels - (Stereo 2.1)\n";
}
}
}
if($fps == -1 || $duration == -1 || $audio_track_num == -1 || $h264_track_num == -1) {
print "mkvinfo parsing failed. mkvinfo output:\n\n" . join("\n", @output), "\n";
exit 1;
}
my $audio_file;
if($audio_type eq "A_DTS") {
$audio_file = $tmp_dts;
} elsif($audio_type eq "A_AC3") {
$audio_file = $tmp_ac3;
} else {
print "Error: invalid audio type in mkv: $audio_type\n";
exit 1;
}
print "mkvextract tracks \"$in\" $audio_track_num:$audio_file $h264_track_num:$tmp_h264\n";
my $output = `mkvextract tracks "$in" $audio_track_num:$audio_file $h264_track_num:$tmp_h264 2>&1`;
if($?) {
print "Error, mkvextract failed! output:\n\n$output\n";
exit 1;
}
if($fps == -1) {
print "Error, could not determine input MKV fps\n";
exit 1;
}
return ($fps, $duration, $audio_file, $channels);
}
##############################################################################
# change h264 header level_idc to 0x29
##############################################################################
sub change_h264_level {
my $file = shift;
open my $fh, "+< $file" or die "Cannot open temporary h264 file\n";
sysseek($fh, 7, 0);
syswrite($fh,"\x29",1);
close($fh);
}
##############################################################################
# convert audio AC3 -> WAV -> AAC
##############################################################################
sub conv_to_aac {
my ($in, $aac, $channels) = @_;
my $fifo = $tmp_wav_fifo;
if ($channels == 6) {
print "mplayer $in -af channels=6:6:0:0:1:1:2:4:3:5:4:2:5:3 -ao pcm:fast:waveheader:file=$fifo -channels 6 -novideo\n";
my $output = `mplayer $in -af channels=6:6:0:0:1:1:2:4:3:5:4:2:5:3 -ao pcm:fast:waveheader:file=$fifo -channels 6 -novideo 2>&1`;
if($?) {
tprint("mplayer/faac conversion to aac failed: $output\n");
exit 1;
}
} else {
print "mplayer $in -ao pcm:fast:waveheader:file=$fifo -channels $channels -novideo\n";
my $output = `mplayer $in -ao pcm:fast:waveheader:file=$fifo -channels $channels -novideo 2>&1`;
if($?) {
tprint("mplayer/faac conversion to aac failed: $output\n");
exit 1;
}
}
my $faac_cmd = "faac -q 100 -o \"$aac\" \"$fifo\"";
print "$faac_cmd\n";
system($faac_cmd);
# clean up the fifo and the ac3/dts file to save on disk space
unlink($in);
unlink($fifo);
}
##############################################################################
# remux the video and audio tracks in the mp4 format
##############################################################################
sub create_mp4 {
my ($h264, $aac, $fps, $tmp_mp4, $outf) = @_;
# size of h264 + aac
my $total_size = 0;
# split the file into 3.5 G chunks to avoid problems with
# PS3 playback of 4G files, this is the size in KB
my $split_size = 4000000;
my $split = 0;
# find out how big the existing file is. If it's less than
# our split size, then don't bother splitting it
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = stat($h264);
$total_size += $size;
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = stat($aac);
$total_size += $size;
# normalize to KB for comparison
$total_size /= 1024;
if($total_size > $split_size) {
$split = 1;
}
my $split_str = "";
if($split) {
$split_str = "-splits $split_size";
} else {
$split_str = "";
}
my $cmd = "MP4Box $split_str -add $h264 -add $aac -fps $fps -par 1=1:1 -lang eng \"$outf\"";
print "$cmd\n";
#my $output = `$cmd`;
my $output = system($cmd);
if($?) {
print "MP4Box creation of mp4 failed! output:\n\n$output\n";
exit 1;
}
}
##############################################################################
# make sure we have all the tools for the job
##############################################################################
sub check_required_tools {
my $errors = 0;
my @required = qw(mkvinfo mkvextract ffmpeg mplayer MP4Box faac);
foreach my $req_prog (@required) {
my $found = 0;
foreach my $path_ent (split(/:/, $ENV{PATH})) {
if(-r "$path_ent/$req_prog") {
$found = 1;
last;
}
}
if(! $found) {
$errors++;
print "Error, required program: $req_prog not found. Please install it.\n";
}
}
if($errors > 0) {
exit 1;
}
}
##############################################################################
# print status messages during remux process
##############################################################################
sub tprint {
my $msg = shift;
print $msg;
}
The script had a glitch with tmp files (was naming the tmpfile as the final output hence deleting it...), now should be ok.
Adv Reply
Re: MKV to MP4 for playback on PS3
...) .
Originally Posted by Emanuele_Z
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