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Document lavc audio codecs

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16536 b3059339-0415-0410-9bf9-f77b7e298cf2
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gpoirier 2005-09-19 22:29:36 +00:00
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DOCS/xml/en/encoding-guide.xml
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@ -2221,7 +2221,7 @@ You can encode to the following codecs (more or less up to date):
<informaltable frame="all">
<tgroup cols="2">
<thead>
<row><entry>Codec name</entry><entry>Description</entry></row>
<row><entry>Video codec name</entry><entry>Description</entry></row>
</thead>
<tbody>
<row><entry>mjpeg</entry><entry>
@ -2290,6 +2290,47 @@ You can encode to the following codecs (more or less up to date):
The first column contains the codec names that should be passed after the
<literal>vcodec</literal> config, like: <option>-lavcopts vcodec=msmpeg4</option>
<informaltable frame="all">
<tgroup cols="2">
<thead>
<row><entry>Audio codec name</entry><entry>Description</entry></row>
</thead>
<tbody>
<row>
<entry>mp2</entry>
<entry>MPEG Layer 2</entry>
</row>
<row>
<entry>ac3</entry>
<entry>AC3, aka Dolby Digital</entry>
</row>
<row>
<entry>adpcm_ima_wav</entry>
<entry>IMA Adaptive PCM (4bits per sample, 4:1 compression)</entry>
</row>
<row>
<entry>sonic</entry>
<entry>Experimental lossy/lossless codec</entry>
</row>
</tbody>
</tgroup>
</informaltable>
The first column contains the codec names that should be passed after the
<literal>acodec</literal> config, like: <option>-lavcopts acodec=ac3</option>
</para>
<para>
Contrary to <systemitem class="library">libavcodec</systemitem>'s video
codecs, its audio codecs do not make a wise usage of the bits they are
been given as they lack some minimal psychoacoustic model (if at all)
which most other codec implementations feature.
However, note that all these audio codecs are very fast and work
out-of-the-box everywhere <application>MEncoder</application> has been
compiled with <systemitem class="library">libavcodec</systemitem> (which
is the case most of time), and do not depend on external libraries.
</para>
<informalexample>