TOOLS/dvd2divxscript.pl

   1 #!/usr/bin/perl
   2
   3 #
   4 # (c) 2002-2004 by Florian Schilhabel <florian.schilhabel@web.de>
   5 #
   6 #
   7 # version 0.1  initial release  22/08/2002
   8 #
   9 #
  10 # If you have any comments, suggestions, etc., feel free to send me a mail ;-))
  11 # flames and other things like that should go to /dev/null
  12 # thankx to all the mplayer developers for this really *great* piece of software
  13 #
  14 #
  15 # This script is free software; you can redistribute it and/or
  16 # modify it under the terms of the GNU Lesser General Public
  17 # License as published by the Free Software Foundation; either
  18 # version 2.1 of the License, or (at your option) any later version.
  19 #
  20 # This script is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  23 # Lesser General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU Lesser General Public
  26 # License along with this library; if not, write to the Free Software
  27 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  28 #
  29 #
  30 #
  31 use Getopt::Long;
  32
  33 # specify your default Settings here...
  34
  35 $abr_default = 128;          # The default AudioBitRate
  36 $lang_default = "de";        # ... the language
  37 $cdsize_default = 700;       # ... the CD-Rom Size
  38 $writedev_default = "0,1,0"; # ... the CD Writer Device
  39 $speed_default = 4;          # ... the writer speed
  40 $dvd_device = "/dev/dvd";    # and the DVD Rom Device
  41
  42 # end of default Settings
  43
  44
  45
  46 sub delete_tempfiles {
  47         if (open(FILE, "< audio.stderr")) {
  48         close (FILE);
  49         system ("rm audio.stderr")
  50         }
  51         if (open(FILE, "< frameno.avi")) {
  52         close (FILE);
  53         system ("rm frameno.avi");
  54         }
  55         if (open(FILE, "< lavc_stats.txt")) {
  56         close (FILE);
  57         system ("rm lavc_stats.txt");
  58         }
  59 }
  60
  61 GetOptions(             "help" => \$help,
  62                         "abr=i" => \$abr,
  63                         "lang=s" =>\$lang,
  64                         "cdsize=i" => \$cdsize,
  65                         "dvd=i" => \$dvd_track,
  66                         "keeptemp" => \$keeptemp,
  67                         "shutdown" => \$shutdown,
  68                         "out=s" => \$output,
  69                         "writecd" => \$writecd,
  70                         "writedev=s" => \$writedev,
  71                         "speed=i" => \$speed,
  72                         "dvd-device=s" => \$dvd_device );
  73
  74 if ($help) {
  75         print "Welcome to the DVD to DIVX Helper Script\n";
  76         print "\n";
  77         print "this script encodes a DVD track in 3-pass mode to libavcodec's mpeg4\n";
  78         print "Optionally it writes the resulting MovieFile to a CD-Rom\n";
  79         print "as well as the corresponding audio track to mp3\n";
  80         print "Optionally it writes the resulting MovieFile to a CD-Rom\n";
  81         print "and shuts down the Computer.\n";
  82         print "If you like, you can watch the mencoder output on /dev/tty8\n";
  83         print "Usage:\n";
  84         print "--help              show this text\n";
  85         print "--abr               (AudioBitRate) Please enter the desired bitrate\n";
  86         print "                    this can be either [96|128|192] kbit/sec.\n";
  87         print "                    Default: 128 kbit/sec.\n";
  88         print "--lang              specify the Language of the audio track\n";
  89         print "                    this can be for example <en> or <de>\n";
  90         print "                    Default: <de>\n";
  91         print "--dvd               specify the DVD Track, you want to encode\n";
  92         print "--cdsize            specify the Size of your CD-ROM\n";
  93         print "                    Default: 700MB\n";
  94         print "--shutdown          Shutdown the System, when the encoding process has finished\n";
  95         print "                    this will only be possible if you are root\n";
  96         print "--out               Specify the Name of your encoded Movie\n";
  97         print "                    The File Extension will be appended automatically\n";
  98         print "--writecd           takes the newly created Movie and writes it to a CD-Rom\n";
  99         print "--writedev          is the usual cdrecord device identifier\n";
 100         print "                    for example 0,1,0\n";
 101         print "--speed             the writing speed\n";
 102         print "                    Default: 4\n";
 103         print "--dvd-device        device to pull the video off\n";
 104         print "                    Default: /dev/dvd\n";
 105         exit;
 106 }
 107
 108 delete_tempfiles();
 109
 110 # testing user values && set defaults...
 111
 112 if ($abr == 96){}
 113 elsif ($abr == 128) {}
 114 elsif ($abr == 192) {}
 115 elsif ($abr == 0 ) {
 116         print "No AudioBitRate specified - Setting to Default Value\n";
 117         $abr = $abr_default;
 118 }
 119 else {
 120 print "AudioBitRate not valid. please choose [96|128|192]\n";
 121 exit;
 122 }
 123
 124 if ($lang eq "") {
 125         print "No Language specified - Setting to Default Value\n";
 126         $lang = $lang_default;
 127 }
 128 else {}
 129
 130 if ($dvd_track == 0 ) {
 131         print "No DVD Track selected - You must specify one with: --dvd trackno.\n";
 132         exit;
 133 }
 134
 135 if ($cdsize == 650) {}
 136 elsif ($cdsize == 700) {}
 137 elsif ($cdsize == 800) {}
 138 elsif ($cdsize == 0 ) {
 139         print "No CD Size Specified - Setting to Default Value\n";
 140         $cdsize = $cdsize_default;
 141 }
 142
 143 else    {
 144 print "CD Size not valid. please choose [650|700|800]\n";
 145 exit;
 146 }
 147
 148 if ($output eq "") {
 149         print "No MovieName given - You must specify one with: --out [movie_name]\n";
 150         exit;
 151 }
 152 else {
 153         ($name, $extension) = split(/./, $out);
 154         if ($extension eq "avi") {
 155                 $vob_tempfile = "$name.vob";
 156                 $avi_filename = "$output";
 157         }
 158         else {
 159                 $vob_tempfile = "$output.vob";
 160                 print "VOB CacheFile set to $vob_tempfile\n";
 161                 $avi_filename = "$output.avi";
 162                 print "Movie Filename set to $avi_filename\n";
 163         }
 164 }
 165
 166 if ($shutdown) {
 167         # test who i am
 168         $user = `id -u`;
 169         if ($user == 0) {
 170                 print "System will be shut down after Movie encoding\n";
 171         }
 172         else {
 173                 print "Cannot shutdown the system after Movie encoding - you are not 'root'\n";
 174                 exit;
 175         }
 176 }
 177
 178 if ($writecd) {
 179         if ($writedev == "") {
 180                 print "Setting CD Writer Device to Default Value\n";
 181                 $writedev = $writedev_default;
 182         }
 183         if ($speed == 0) {
 184                 print "Setting CD Writer Speed to Default value\n";
 185                 $speed = $speed_default;
 186         }
 187
 188 }
 189
 190
 191
 192 ###
 193
 194 print "Your Settings for this run are:\n";
 195 print "AudioBitRate:    $abr\n";
 196 print "Language:        $lang\n";
 197 print "DVD-Track:       $dvd_track\n";
 198 print "CD-Rom Size:     $cdsize\n";
 199 print "Movie FIlename:  $avi_filename\n";
 200 if ($writecd) {
 201         print "CD Writer Dev.:  $writedev\n";
 202         print "Writer Speed:    $speed\n";
 203 }
 204
 205 # here comes the fun part...
 206
 207 print "precacheing...\n";
 208 $status = system ("mencoder dvd://$dvd_track -ovc copy -oac copy -dvd-device $dvd_device -alang $lang -o $vob_tempfile 1>/dev/tty8 2>/dev/tty8");
 209 die "Prechacheing failed. mencoder exited with Status Code $?" unless $status == 0;
 210
 211 print "Encoding Audio...\n";
 212 $status = system ("mencoder $vob_tempfile -ovc frameno -oac mp3lame -lameopts br=$abr:cbr:vol=3 -o frameno.avi 1>./audio.stderr 2>/dev/tty8");
 213 die "Encoding Audio failed. mencoder exited with Status Code $?" unless $status == 0;
 214
 215 # now we have to find out the recommended bitrate for the Video encoding process...
 216 # my current method to find this out is, hmm, well, *strange*
 217 # but anyway, it works ;-))
 218
 219 open(FILE, "< audio.stderr") or die "Unable to open audio.stderr.";
 220 @lines = <FILE>;
 221 foreach $line (@lines) {
 222         ($index, $zz) = split(" ", $line);
 223         if ($index eq "Recommended") {
 224                 ($a, $b, $c, $d, $size, $f, $bitrate) = split(" ", $line);
 225                 if ($cdsize == $size) {
 226                         $video_bitrate = $bitrate;
 227                         print "Setting Videobitrate to $video_bitrate\n";
 228                 }
 229         }
 230 }
 231 close (FILE);
 232
 233 print "Encoding Video Stream, 1st pass...\n";
 234 $status = system ("mencoder $vob_tempfile -ovc lavc -lavcopts vpass=1:vcodec=mpeg4:vbitrate=$video_bitrate:vhq -oac copy -o $avi_filename 1>/dev/tty8 2>/dev/tty8");
 235 die "Encoding Video Stream failed. mencoder exited with Status Code $?" unless $status == 0;
 236
 237 print "Encoding Video Stream, 2nd pass...\n";
 238 $status = system ("mencoder $vob_tempfile -ovc lavc -lavcopts vpass=2:vcodec=mpeg4:vbitrate=$video_bitrate:vhq -oac copy -o $avi_filename 1>/dev/tty8 2>/dev/tty8");
 239 die "Encoding Video Stream failed. mencoder exited with Status Code $?" unless $status == 0;
 240
 241 print "finished encoding\n";
 242
 243
 244 if ($writecd) {
 245         print "Now writing CD-Rom\n";
 246         $status = system("mkisofs -r -J $avi_filename | cdrecord  speed=$speed  dev=$writedev -data  - 2>/dev/tty8 1>/dev/tty8");
 247         die "Writing CD failed. cdrecord exited with Status Code $?" unless $status == 0;
 248 }
 249 delete_tempfiles();
 250
 251 print "Finished - have a nice day ;-)\n";
 252 if ($shutdown) {
 253         system("halt");
 254         exit;
 255 }
 256 exit;