OpenDivX support in MPlayer
~~~~~~~~~~~~~~~~~~~~~~~~~~~

See http://www.projectmayo.com for details on the OpenDivX codec. It's the
opensource successor of the DivX codec (really it's a somewhat enhanced version
of the MPEG-4 standard), already available on most platforms. We use an
MMX-optimized Decore. OpenDivX version supported in MPlayer : 4.0alpha48

Decoder:
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Now it's used for AVI & ASF files with fourcc 'dvx1' and 'divx'

You can adjust Quality level using the -pp option:
Combine (add) flags you need:

1   Y  horizontal deblocking
2   Y  vertical deblocking
4   C  horizontal deblocking
8   C  vertical deblocking
16  Y dering
32  C dering

For example, if you want horiz+vert chroma deblocking, then use
  -pp 12    (4+8=12)

Note: C filters works only with n*16 height movies.

Note2: the postprocessing filter can be used for mpeg 1/2 files too (-pp)

Encoder:
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There is a very alpha hack to convert video into OpenDivX .avi files.
Audio is automatically disabled. Select 'odivx' video device as output:
  mplayer input.mpg -vo odivx -encode output.avi
Yes, I know that it's unusable now, it's only for testing purposes.
Real encoding feature (with audio) is planned, but in the far future.