[FFmpeg-devel] [PATCH] New vorbis channel layouts

Robert Swain robert.swain
Thu Jan 14 17:17:42 CET 2010


New channel layouts have been added to the Vorbis spec [1] for 6.1 and 
7.1 channels. Attached is a patch for adding such support to the FFmpeg 

If you look at the spec, you should note that surround rear left/right 
are dropped in 6.1 and surround left/right (or side left/right in 
FFmpeg) take their place, plus surround rear centre (back centre in 
FFmpeg). And 7.1 is just the 5.1 configuration with side left/right 
which appears to be the standard 7.1 setup according to our definitions.

Best regards,

[1] http://www.xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9
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