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933 lines
28 KiB
933 lines
28 KiB
<html>
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<head>
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<title> Linux Video Stream Processing Tool - Examples</title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name="keywords" content="DVD, digital video, DV, encoder, divx,
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DivX;-), lame, source, posix, avifile, opendivx, codec, linux, AC3,
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program stream, video, audio, transcode, decoder, stream, YV12">
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</head>
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<body bgcolor=#CDB5CD>
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<a name=top></a>
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<table cellspacing="10" cellpadding="0" border="0" width="100%">
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<tr>
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<td align=left valign="top" width=30% bgcolor="#a0a0a0">
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<table border="0" cellpadding="10" cellspacing="3" font size=+2 bgcolor="#ffffff" width=100%>
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<td align="left" bgcolor="#e9e9e9"> <FONT
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FACE="Lucida,Helvetica"> <font>DVD to MPEG-4</font>
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</tr>
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<tr>
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<td>
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This chapter gives an introduction to DVD to DivX
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compression. There are actually only 2 external packages
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required to make it work with <i>transcode</i>. The first
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is <i>libdvdcss</i>
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(recommended version is 0.0.3 - not 1.0.0!) required to
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overcome the context scrambling system (CSS) and the second is a
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modern MPEG-4 codec. See the <a href=index.html#modules>
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modules</a> section to find out which MPEG-4 codecs are currently supported
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and where to obtain the sources/binaries. Unless you enjoy
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command line utilities, please take a look at the excellent
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<a href="http://www.exit1.org/dvdrip/">dvd::rip</a>, which is
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a full featured DVD Ripper GUI for Linux, written in
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Perl, by Joern Reder.
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<ul>
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<li> <a href="#dvd1"> <FONT FACE="Lucida,Helvetica"> DVD
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(PAL)</font></a> <br>
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<ul>
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<li><a href="#dvd1_43"> <FONT FACE="Lucida,Helvetica">
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aspect ratio 4:3</font></a>
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<li><a href="#dvd1_169"> <FONT FACE="Lucida,Helvetica">
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aspect ratio 16:9</font></a>
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</ul>
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<br>
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<li> <a href="#dvd2"> <FONT FACE="Lucida,Helvetica"> DVD
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(NTSC)</font></a><br>
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<ul>
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<li><a href="#dvd2_43"> <FONT FACE="Lucida,Helvetica">
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aspect ratio 4:3</font></a>
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<li><a href="#dvd2_169"> <FONT FACE="Lucida,Helvetica">
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aspect ratio 16:9</font></a>
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</ul>
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<br>
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<li> <a href="#vob"> <FONT FACE="Lucida,Helvetica">
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multiple program stream VOB chunks </font></a>
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<br>
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<ul>
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<li><a href="#vob_mp3"> <FONT FACE="Lucida,Helvetica">
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encoding audio to MP3</font></a>
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<li><a href="#vob_ac3"> <FONT FACE="Lucida,Helvetica">
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AC3 audio pass-through</font></a>
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<li><a href="#vob_pcm"> <FONT FACE="Lucida,Helvetica">
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LPCM audio pass-through</font></a>
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<li><a href="#vob_mp2"> <FONT FACE="Lucida,Helvetica">
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MP2 to MP3 audio re-encoding</font></a>
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</ul>
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</ul>
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<ul>
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<li> <a href="#tccat"> <FONT FACE="Lucida,Helvetica">
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making a main title DVD backup with
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<i>tccat</i></font></a><br>
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</ul>
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<p>
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</td>
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</tr>
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</table>
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</table>
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<a name=dvd1></a>
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<table cellspacing="10" cellpadding="0" border="0" width="100%">
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<tr>
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<td align=left valign="top" width=30% bgcolor="#a0a0a0">
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<table border="0" cellpadding="10" cellspacing="3" font size=+2 bgcolor="#ffffff" width=100%>
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<td align="left" bgcolor="#e9e9e9">
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<font>PAL DVD ---> DivX 4.0 / DivX ;-)</font>
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</tr>
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<tr>
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<td>
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Here is a 3 step guide to convert a PAL DVD to an AVI
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DivX movie with <FONT color=blue> MP3 </font> (default) sound under linux using
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<i>transcode</i>:
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<ul>
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<li> (I) Put the DVD in the drive:<br>
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We assume, that /dev/dvd
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is a link to the actual device. The disk may be
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encrypted and we need <i>libdvdcss</i> as a shared
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library in the default library search path for this.
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We first do some preprocessing with <i> tcscan </i>
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to find out the best encoding bitrate and frame
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parameter
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to make
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the main DVD title fit on 1 or 2 CDs with renormalized
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sound. This is done by invoking the helper
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programs
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<i>tccat</i>, <i>tcextract</i>, <i>tcdecode</i> and
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<i>tcscan</i>: <p>
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<ul>
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<li> bitrate:<br>
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<FONT color=red>tccat -t dvd -T 1,-1 -i /dev/dvd |
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tcextract -x ac3 -t vob | tcdecode -x ac3 | tcscan -x pcm</font><p>
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We basically pipe all chapters (use "-1" for the
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chapter argument of option "-T") of the main title
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(this number may be different on your DVD) through
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<i>tcextract</i>, where we have to supply the
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filetype option "-t vob". The extracted AC3 stream is
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decoded by <i>tcdecode</i> and analyzed by
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<i>tcscan</i>.
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The output may look like:<p>
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<code>
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[tcscan] audio frames=167838.40, estimated clip length=6713.54 seconds<br>
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[tcscan] (min/max) amplitude=(-0.210/0.224), suggested volume
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[tcscan] rescale=4.470 <br>
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[tcscan] length: 167838 frames <br>
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[tcscan] runtime: 6713 sec @ 25.000 fps <br>
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[tcscan] MP3 bitrate: 128 kbps <br>
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[tcscan] audio: 104.89 MB <br>
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[tcscan] disk size: 650 MB | video 545.11 MB | encoder bitrate 681.17
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kbps <br>
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[tcscan] disk size: 700 MB | video 595.11 MB | encoder bitrate 743.65 kbps<br>
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[tcscan] disk size: 1300 MB | video 1195.11 MB | encoder bitrate 1493.42 kbps<br>
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[tcscan] disk size: 1400 MB | video 1295.11 MB | encoder bitrate
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1618.38 kbps<br><br>
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</code>
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and is a simple estimate for the encoder bitrate,
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using the
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default values for MP3 sound encoded at 128 kbps.
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Invoke <i>tcscan -h</i> to learn about more options.
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The main title runtime is about 1h:52m and a high
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quality encoded movie deserves a 2 CD burn.
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As you can see, the unrealistic high bitrate values
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for
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the old Win32 dll codecs are no longer valid.<br><br>
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</li>
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<li> frame parameter and aspect ratio:<br>
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<FONT color=red>tccat -t dvd -T 1,-1 -i
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/dev/dvd | tcscan -x vob</font><p>
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and press "^C" after the MPEG frame parameter
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have been displayed.
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In this case, the output may look like
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<p>
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<code> found MPEG-2 video stream [0xe0] <br>
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sequence: 720x576 4:3, 25 fps, ...
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</code><p>
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which means, that we need to rescale the frame
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to
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obtain the proper aspect ratio "4:3". Another
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common aspect ratio is "16:9". We show below
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suggested scaling parameter and two
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<i>transcode</i> processing
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modes for both cases.
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</li>
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</ul>
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<p>
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<li> (II) The actual encoding session (parameter grouped
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by import/processing/export):<p>
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<a name=dvd1_43>Example:</a><FONT color=blue> <bf>DVD title / aspect ratio "4:3"
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/ letterbox format </bf></font><p>
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<table>
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<tr>
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<td align=left valign="top" bgcolor="#ccffcc">
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transcode</td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-i /dev/dvd/ -x dvd -T 1,-1 -V</td>
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</tr>
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<tr><td></td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-B 1,0 -Y 76,8 -s 4.47</td>
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</tr>
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<td></td><td align=left valign="top" bgcolor="#ccffcc">
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-t 83920,alien -y divx4 -w 1618 </td></tr>
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</table>
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<br>
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<code>
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[transcode] video: import frame | 720 x 576 1.25:1<br>
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[transcode] video: new aspect ratio | 720 x 544 1.32:1 (-B) <br>
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[transcode] video: clip frame (->) | 704 x 392
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</code><p>
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<ul>
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<li>
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We use slightly more than 1/2 of the total number of
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frames "-t" or simply 1 huge file "-o
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alien.avi" to be split in the last step.<br>
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<li>
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We clip off 76 lines at the top and bottom and 8
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rows on both sides of
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the movie "-Y 76,8" before encoding to get rid of the black bars. This is
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only recommended for letterbox format.<br>
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<li>In order to use the
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fast resizing of <i> transcode</i> with option "-B", the
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height and width must
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be a multiple of 32. Clipping 8 columns on both
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sides will do, in most cases they are black anyway.
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We will get a 704x392 frame with an aspect ratio of
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1.32:1, which is acceptable.<br>
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<li>
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Optional: We might try to go for better encoding quality.
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In this case, it is recommended to use the
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multi-pass encoding feature found in DivX 4.0 with option "-R 1".
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However, you need a second run with
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identical transcode options, except "-R 2", instead of "-R 1". The first run produces a logfile,
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which is analyzed to estimate optimal encoding parameter and to
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achieve an average encoding bitrate, that is close to the supplied
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value of "-w" and will fit the result onto 2
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CD's.<br>
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<li>Optional: Use the high-quality zoom option "-Z 720x544"
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instead of "-B 1,0".<br>
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<li> The option "-V" consumes less CPU/PCI
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bandwidth and gives a big performance increase.
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</ul>
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<p>
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<a name=dvd1_169>Example:</a> <FONT color=blue> <bf>DVD chapter mode /
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aspect ratio "16:9" / letterbox format </bf></font><p>
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<table>
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<tr>
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<td align=left valign="top" bgcolor="#ccffcc">
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transcode</td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-i /dev/dvd/ -x dvd -V</td>
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</tr>
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<tr><td></td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-j 16,0 -B 5,0 -Y 40,8 -s 4.47</td>
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</tr>
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<td></td><td align=left valign="top" bgcolor="#ccffcc">
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-U alien -y divx4 -w 1618 </td></tr>
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</table>
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<br>
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<code>
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[transcode] video: import frame | 720 x 576
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1.25:1 <br>
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[transcode] video: clip frame (<-) | 720 x 544<br>
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[transcode] video: new aspect ratio | 720 x 384 1.77:1 (-B) <br>
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[transcode] video: clip frame (->) | 704 x 304<br>
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</code><p>
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<ul>
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<li> We clip off 16 lines at the top and the bottom of
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the movie to use the fast resizing of <i>
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transcode</i> to an almost ideal aspect ratio of 1.77:1.
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Clipping 8 columns on both
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sides and 40 rows at the top and the bottom removes
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the remaining black bars prior to encoding.
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<br>
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<li>
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In the chapter mode "-U", the output is split into separate
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files labeled alien-ch00.avi, alien-ch01.avi, ... which contain the
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DVD chapters, that are known from the DVD player menu.<br>
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</ul>
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<p>
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Example: <FONT color=blue> <bf>DVD chapter #25 /
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aspect ratio "16:9"</bf></font><p>
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<table>
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<tr>
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<td align=left valign="top" bgcolor="#ccffcc">
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transcode</td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-i /dev/dvd/ -x dvd -T 1,25 -V</td>
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</tr>
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<tr><td></td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-j 0,8 -B 6,1 -Y 40,8 -s 4.47</td>
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</tr>
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<td></td><td align=left valign="top" bgcolor="#ccffcc">
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-o alien-ch25.avi -y divx4 -w 1618 </td></tr>
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</table>
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<br>
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<code>
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[transcode] video: import frame | 720 x 576
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1.25:1 <br>
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[transcode] video: clip frame (<-) | 704 x 576<br>
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[transcode] video: new aspect ratio | 672 x 384 1.79:1 (-B) <br>
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</code><p>
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<ul>
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<li> We clip off 8 columns on both
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sides of the movie to use the fast resizing of <i>
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transcode</i>
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to an almost ideal aspect ratio of 1.79:1. No further
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clipping necessary for the final frame size of 672x384.
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<br>
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<li> The encoding stops after the selected chapter 25 is done.
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</ul>
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<p>
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<li> (III) It's almost done:
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<br> The <i> avisplit </i> utility allows to split
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the
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AVI file(s) produced by transcode. The utility may not
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work for other AVI files. If you have one big file,
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use
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<br><br>
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<FONT color=red> avisplit -i alien.avi -s 700</font><br>
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<br> to break a huge file (AVI files have a 2 GB
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limit) into the pieces alien.avi-0
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and alien.avi-1 with no more than 700 MB each.
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<p>
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For the second example above, we now have quite a lot of files, each containing a chapter of the movie. Distribute the files, preserving
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the order, onto one ore more subdirectories ./CD-N,
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N=1,2,..., each containing no more than 650 or 700
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MB, depending on your choice of CD. Now invoke
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<i>avimerge</i> for each subdirectory <br><br>
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<FONT color=red> avimerge -o movie-disk-N.avi -i ./CD_N/*.avi</font><br><br>
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This will glue all the small
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files to one big AVI file named movie-disk-N.avi,
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where N is the number of the CD.
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<i> avimerge</i> supports wildcards and is very
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careful
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in not trashing
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your
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existing AVI files.
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Try to play the big files with
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<i>mplayer</i>
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and seek around. The audio/video synchronization
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should be acceptable. If everything seems fine, go ahead
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and burn your CDs.<p>
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<p>
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</ul>
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</ul>
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</table>
|
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</table>
|
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|
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<a name=dvd2></a>
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<table cellspacing="10" cellpadding="0" border="0" width="100%">
|
|
<tr>
|
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<td align=left valign="top" width=30% bgcolor="#a0a0a0">
|
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<table border="0" cellpadding="10" cellspacing="3" font size=+2 bgcolor="#ffffff" width=100%>
|
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<td align="left" bgcolor="#e9e9e9">
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|
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<font>NTSC DVD ---> DivX </font>
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</tr>
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<tr>
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<td>
|
|
|
|
Here is a 3 step guide to convert a NTSC DVD to an AVI
|
|
DivX movie with <FONT color=blue> MP3 </font> (default) sound under linux using
|
|
<i>transcode</i>:
|
|
|
|
<ul>
|
|
<li> (I) Put the DVD in the drive:<br>
|
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Follow step (I) for the PAL DVD, with option "-f
|
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23.976024" for <i>tcscan</i>.
|
|
|
|
<p>
|
|
|
|
<li> (II) The actual encoding session (parameter grouped
|
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by import/processing/export) :<p>
|
|
<a name=dvd2_43>Example:</a> <FONT color=blue> <bf> DVD title / aspect ratio "4:3"
|
|
/ letterbox format </bf></font><p>
|
|
|
|
<table>
|
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<tr>
|
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<td align=left valign="top" bgcolor="#ccffcc">
|
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transcode</td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-i /dev/dvd/ -x dvd -T 1,-1 -g 720x480 -M 2 -V</td>
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</tr>
|
|
|
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<tr><td></td>
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<td align=left valign="top" bgcolor="#ccffcc">
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-X 2,0 -Y 80,8 -s 4.47</td>
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</tr>
|
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<td></td><td align=left valign="top" bgcolor="#ccffcc">
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-t 83920,alien -y divx4 -w 1618 -f 23.976024</td></tr>
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</table>
|
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<br>
|
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<code>
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[transcode] video: import frame | 720 x 480 1.50:1<br>
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[transcode] video: new aspect ratio | 720 x 544 1.32:1 (-X) <br>
|
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[transcode] video: clip frame (->) | 704 x 384
|
|
</code><p>
|
|
|
|
<ul>
|
|
<li>
|
|
We use slightly more than 1/2 of the total number of
|
|
frames "-t" or simply 1 huge file to be split in the last step.<br>
|
|
<li>
|
|
We clip off 80 lines at the top and bottom and 8
|
|
rows on both sides of
|
|
the movie "-Y 80,8" before encoding to get rid of the black bars. This is
|
|
only recommended for letterbox format.<br>
|
|
<li>In order to use the
|
|
fast resizing of <i> transcode</i> with option "-X", the
|
|
height and width must
|
|
be a multiple of 32. Clipping 8 columns on both
|
|
sides will do, in most cases they are black anyway.
|
|
We will get a 704x384 frame with an aspect ratio of
|
|
1.32:1, which is acceptable.<br>
|
|
<li> We must provide the frame parameter "-g
|
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720x480", the frame rate "-f 23.976024" and the
|
|
demuxer option "-M 2" to obtain a clean stream
|
|
at a constant frame rate.
|
|
</ul>
|
|
|
|
<p>
|
|
|
|
|
|
<a name=dvd2_169>Example:</a> <FONT color=blue> <bf>DVD chapter mode /
|
|
aspect ratio "16:9" / letterbox format </bf></font><p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i /dev/dvd/ -x dvd -g 720x480 -M 2 -V</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 16,0 -B 2,0 -Y 32,8 -s 4.47</td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-U alien -y divx4 -w 1618 -f 23.976024</td></tr>
|
|
|
|
</table>
|
|
|
|
<br>
|
|
|
|
<code>
|
|
[transcode] video: import frame | 720 x 480
|
|
1.50:1 <br>
|
|
[transcode] video: clip frame (<-) | 720 x 448<br>
|
|
[transcode] video: new aspect ratio | 720 x 384 1.75:1 (-B) <br>
|
|
[transcode] video: clip frame (->) | 704 x 320<br>
|
|
</code><p>
|
|
<ul>
|
|
<li> We clip off 16 lines at the top and the bottom of
|
|
the movie to use the fast resizing of <i>
|
|
transcode</i>
|
|
to an almost ideal aspect ratio of 1.77:1.
|
|
|
|
Clipping 8 columns on both
|
|
sides and 32 rows at the top and the bottom removes
|
|
the remaining black bars prior to encoding.
|
|
<br>
|
|
<li>
|
|
In the chapter mode "-U", the output is split into separate
|
|
files labeled alien-ch00.avi, alien-ch01.avi, ... which contain the
|
|
DVD chapters, that are known from the DVD player menu.<br>
|
|
</ul>
|
|
|
|
<p>
|
|
|
|
Example: <FONT color=blue> <bf>DVD chapter #10 /
|
|
aspect ratio "16:9" / viewing angle #2</bf></font><p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i /dev/dvd/ -x dvd -T 1,10,2 -g 720x480 -M 2 -V</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 0,8 -B 3,1 -s 4.47</td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-o alien-ch10-2.avi -y divx4 -w 1618 -f 23.976024</td></tr>
|
|
|
|
</table>
|
|
|
|
<br>
|
|
|
|
<code>
|
|
[transcode] video: import frame | 720 x 480
|
|
1.50:1 <br>
|
|
[transcode] video: clip frame (<-) | 704 x 480<br>
|
|
[transcode] video: new aspect ratio | 672 x 384 1.79:1 (-B) <br>
|
|
</code><p>
|
|
<ul>
|
|
<li> We clip off 8 columns on both
|
|
sides of the movie to use the fast resizing of <i>
|
|
transcode</i>
|
|
to an almost ideal aspect ratio of 1.79:1. No further
|
|
clipping necessary for the final frame size of 672x384.
|
|
<br>
|
|
<li> The encoding stops after the selected chapter 10 is
|
|
done.
|
|
Here, we choose a second camera angle, if the DVD has
|
|
this feature.
|
|
</ul>
|
|
|
|
<p>
|
|
<li> (III) It's almost done:<br>
|
|
|
|
Follow step (III) of the PAL DVD example.
|
|
<p>
|
|
</ul>
|
|
</ul>
|
|
|
|
|
|
</table>
|
|
</table>
|
|
|
|
|
|
<a name=vob></a>
|
|
<table cellspacing="10" cellpadding="0" border="0" width="100%">
|
|
<tr>
|
|
<td align=left valign="top" width=30% bgcolor="#a0a0a0">
|
|
<table border="0" cellpadding="10" cellspacing="3" font size=+2 bgcolor="#ffffff" width=100%>
|
|
<td align="left" bgcolor="#e9e9e9">
|
|
<font>Multiple MPEG
|
|
program stream chunks (VOB) ---> DivX</font>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
|
|
Here is a 3 step guide to rip a DVD and convert the multiple VOB
|
|
chunks, or only a single file, using <i>transcode</i>:
|
|
|
|
<ul>
|
|
<li> We rip the DVD and put all VOB chunks, that make up the
|
|
actual movie into a subdirectory, denoted
|
|
here as
|
|
"my_movie/". For an encrypted DVD, we will need
|
|
<i>libdvdcss</i> under linux to do this, but this may
|
|
not be legal.
|
|
<br>
|
|
If you do not need DVD navigation or multiple angle
|
|
features,
|
|
the ripping is done by:<br><br>
|
|
|
|
<FONT color=red>
|
|
tccat -i /dev/dvd -T 1,-1 | split -b 1024m - my_movie/movie-
|
|
</font><p>
|
|
|
|
I assume, "/dev/dvd" is a link to the DVD
|
|
device and the main title is 1.
|
|
The DVD does not have to be mounted, just
|
|
put it in the drive. After some time,
|
|
we chunks named: movie-aa, movie-ab, ...,
|
|
which are, but the last, exactly 1GB.<br><br>
|
|
The following is also valid, if we have used other
|
|
programs to copy the DVD title VOBs onto the
|
|
harddisk.
|
|
|
|
<br>
|
|
It's a good idea, to let <i>tcprobe</i> take a look
|
|
at the files you want to encode. This is done
|
|
by typing:<br><br>
|
|
|
|
<FONT color=red>
|
|
tcprobe -i my_movie/
|
|
</font><p>
|
|
|
|
assuming that "my_movie/" is a directory in your
|
|
present work directory.
|
|
The output may look like<p>
|
|
|
|
<code>
|
|
[tcprobe] MPEG program stream<br>
|
|
[tcprobe] summary for my_movie/, (*) = not default, 0 = not detected<br>
|
|
import frame size: -g 720x480 [720x576] (*)<br>
|
|
aspect ratio: 16:9 (*)<br>
|
|
frame rate: -f 23.976 [25.000] frc=1 (*)<br>
|
|
audio track: -a 0 [0] -e 48000,16,2 [48000,16,2] -n 0x2000 [0x2000] <br>
|
|
detected (6) subtitle(s)<br>
|
|
</code><p>
|
|
|
|
As you can see, the auto-probing feature has
|
|
detected a NTSC program stream with a single AC3
|
|
audio track. In the following, we only need to take
|
|
care of the aspect ratio 16:9, but that has already been
|
|
explained in the previous section.<p>
|
|
|
|
<li> Now we can invoke <i>transcode</i> with the directory
|
|
mode, that internally concatenates all VOB
|
|
chunks. If
|
|
you need more bitrate or audio renormalization
|
|
information,
|
|
check the DVD section. The default is for MP3 audio
|
|
encoding:<p>
|
|
|
|
<a name=vob_mp3><h3>AC3->MP3</h3></a>
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i my_movie/ -V</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 0,8 -B 3,1 </td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-t 10000,movie -y divx4 </td></tr>
|
|
|
|
</table>
|
|
<p>
|
|
|
|
To enable AC3 pass-through,
|
|
use "-A" and use "-N 0x2000"
|
|
to set the proper codec
|
|
in the AVI file and the player. The default audio
|
|
track
|
|
is 0, which is in most cases the original language. If you
|
|
want to have AC3 sound in your AVI-file, use:<p>
|
|
|
|
<a name=vob_ac3><h3>AC3->AC3</h3></a>
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i my_movie/ -V -A</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 0,8 -B 3,1 </td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-t 10000,movie -y divx4 -N 0x2000</td></tr>
|
|
|
|
</table>
|
|
<p>
|
|
|
|
If you own a DVD with uncompressed PCM audio, e.g., audio track 1,
|
|
and
|
|
want to keep the quality, i.e., pass-through the sound, use:
|
|
|
|
<a name=vob_pcm><h3>PCM->PCM</h3></a>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i my_movie/ -V -a 1</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 0,8 -B 3,1 </td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-t 10000,movie -y divx4 -N 0x1</td></tr>
|
|
|
|
</table>
|
|
<p>
|
|
|
|
If your DVD has MPEG audio, it's usually MP2 format. This is
|
|
automatically
|
|
detected and recompression to MP3 audio is performed with the
|
|
default settings. However, if you need to resample your sound, here
|
|
is an example, using audio track 2:
|
|
|
|
<a name=vob_mp2><h3>MP2->MP3</h3></a>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
transcode</td>
|
|
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-i my_movie/ -V -a 2</td>
|
|
</tr>
|
|
|
|
<tr><td></td>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
-j 0,8 -B 3,1 -E 44100</td>
|
|
</tr>
|
|
|
|
<td></td><td align=left valign="top" bgcolor="#ccffcc">
|
|
-t 10000,movie -y divx4</td></tr>
|
|
|
|
</table>
|
|
<p>
|
|
|
|
|
|
The "-t" option
|
|
splits the output into separate files labeled movie000.avi,
|
|
movie001.avi,..., with exactly
|
|
10000 frames per file.
|
|
On my CII 533@800 MHz, I get around 11 fps for the
|
|
encoding, using the "-V" mode, which saves alot of
|
|
bandwidth.
|
|
|
|
This will take some hours, but since we work with linux,
|
|
we don't need to care, just wait.<p>
|
|
|
|
<ul><li>
|
|
If you have to interrupt your session
|
|
for some reason, you can always restart with the
|
|
help of the "-c" option. You only need to count the
|
|
valid files, i.e., with 10000 frames,
|
|
already encoded to find out the first
|
|
parameter for this option. Drop the last AVI file
|
|
for it may be broken, but this is not the case if
|
|
you use ^C. Also use some other
|
|
basename for the "-t", like "-t 10000,movie1" to make
|
|
sure, not to overwrite your old files. Ok, the
|
|
braindead seeking implementation takes some time, but this is
|
|
rarely used anyway.
|
|
</uL>
|
|
<p>
|
|
|
|
<li> Take a look at the DVD section to learn how to avimerge
|
|
the AVI-files. After merging,
|
|
try to play the big files with
|
|
<i>mplayer</i>
|
|
and seek around. The audio/video synchronization
|
|
should be acceptable. If everything seems fine, go ahead
|
|
and burn your CDs. Note, that AC3 AVI files tend to
|
|
be up to 25% larger compared to MP3 audio, which is the
|
|
default for transcode.<p>
|
|
|
|
</ul>
|
|
|
|
</table>
|
|
</table>
|
|
|
|
<a name=tccat></a>
|
|
<table cellspacing="10" cellpadding="0" border="0" width="100%">
|
|
<tr>
|
|
<td align=left valign="top" width=30% bgcolor="#a0a0a0">
|
|
<table border="0" cellpadding="10" cellspacing="3" font size=+2 bgcolor="#ffffff" width=100%>
|
|
<td align="left" bgcolor="#e9e9e9">
|
|
|
|
<font>making a main title DVD backup with <i>tccat</i> </font>
|
|
</tr>
|
|
<tr>
|
|
<td>
|
|
|
|
Here is a short guide for making a quick "backup" of
|
|
your shiny new multi-angle DVD. <br>
|
|
NOTE: Please make sure, the DVD explicitly allows you to make a backup copy.
|
|
|
|
<p>
|
|
<ul>
|
|
<li> (0) insert your DVD;-) <p>
|
|
<li> (1) switch to a new empty directory $MY_PATH/DVD/ on your hard drive.<p>
|
|
<li>(2) if /dev/dvd is a link to your block device, use tccat's new -P
|
|
option <p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
tccat -i /dev/dvd -P 1 | split -b 1024m - VTS_01_</td>
|
|
</tr>
|
|
</table>
|
|
<p>
|
|
This will result in a couple of files named <br>
|
|
|
|
VTS_01_aa, VTS_01_ab, ...<br>
|
|
|
|
(once LFS is fully working, a single file should be sufficient (???),
|
|
i.e., "tccat -i /dev/dvd -P 1 > VTS_01_1.VOB").<p>
|
|
|
|
<li>(3) copy the IFO files by hand. For this, you will need to mount the
|
|
DVD: <p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
mount /dev/dvd /mnt/dvd
|
|
</tr>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
cp /mnt/dvd/VIDEO_TS/VIDEO_TS.IFO .
|
|
</tr>
|
|
</table>
|
|
<p>
|
|
|
|
You also need the title IFO file. In this case
|
|
cp /mnt/dvd/VIDEO_TS/VTS_01_0.IFO . <p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
umount /mnt/dvd
|
|
</tr>
|
|
</table>
|
|
<p>
|
|
|
|
|
|
<li>(4) rename the chunks, first file is VTS_01_1.VOB, not VTS_01_0.VOB. The
|
|
latter contains still pictures and the like (?). <p>
|
|
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
mv VTS_01_aa VTS_01_1.VOB
|
|
</tr>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
mv VTS_01_ab VTS_01_2.VOB
|
|
</tr>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
...
|
|
</tr>
|
|
</table>
|
|
<p>
|
|
|
|
|
|
<li>(5) repeat step (2-4) for other titles, you wish to keep. In most cases,
|
|
the main title will do. Note that the Example after you're done: <p>
|
|
|
|
$>ls -l .<br>
|
|
total 5529180<br>
|
|
-r--r--r-- 1 bgates users 26624 Jan 13 10:29 VIDEO_TS.IFO<br>
|
|
-r--r--r-- 1 bgates users 124928 Jan 13 10:29 VTS_01_0.IFO<br>
|
|
-rw-r--r-- 1 bgates users 1073741824 Jan 13 18:05 VTS_01_1.VOB<br>
|
|
-rw-r--r-- 1 bgates users 1073741824 Jan 13 18:06 VTS_01_2.VOB<br>
|
|
-rw-r--r-- 1 bgates users 1073741824 Jan 13 18:08 VTS_01_3.VOB<br>
|
|
-rw-r--r-- 1 bgates users 1073741824 Jan 13 18:10 VTS_01_4.VOB<br>
|
|
-rw-r--r-- 1 bgates users 1073741824 Jan 13 18:12 VTS_01_5.VOB<br>
|
|
-rw-r--r-- 1 bgates users 287461376 Jan 13 18:12 VTS_01_6.VOB<br>
|
|
<p>
|
|
<li>(6) test your copy, you need to provide an absolute path to
|
|
the backup directory:<p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
tcprobe -i $MY_PATH/DVD -T 1
|
|
</tr>
|
|
<tr>
|
|
<td align=left valign="top" bgcolor="#ccffcc">
|
|
tccat -i $MY_PATH/DVD -T 1,C,A | [mplayer | xine | ... ] -
|
|
</tr>
|
|
|
|
</table>
|
|
<p>
|
|
|
|
and optionally check other titles, chapters (C) or even viewing angles (A).<p>
|
|
|
|
<li>(7) Please note this backup copy is suitable for navigation with import
|
|
module "-x dvd". If you prefer the cluster mode, you need to
|
|
apply my cluster mini guide to this copy of your DVD or the DVD in your
|
|
drive. The program stream contains full navigation and angle information.
|
|
These information are not preserved using the -T option with tccat.<p>
|
|
-----<br>
|
|
Hint: It does not make sense to apply the procedure to all titles
|
|
found with tcprobe, since a lot of titles share VTS* files and IFO files.
|
|
|
|
|
|
</table>
|
|
</table>
|
|
|
|
|
|
|
|
<!-- hhmts start -->
|
|
Last modified: Thu May 16 12:56:51 CEST 2002
|
|
<!-- hhmts end -->
|
|
|
|
</body> </html>
|