[Mplayer-cvslog] CVS: main/DOCS/tech mpcf.txt,1.30,1.31

D Richard Felker III dalias at aerifal.cx
Sun Sep 7 22:32:50 CEST 2003

On Sun, Sep 07, 2003 at 09:21:03PM +0200, Alex Beregszaszi wrote:
> Hi,
> > > example channel order of audio (l,r,lfe,...) and probably others.
> > maybe that should be just added to the audio stream packet
> Let's discuss this.
> Channel types (did I left out some?):
>  left
>  right
>  surround left
>  surround right
>  center
>  lfe (low freq.)
> Proposed infopacket entry:
> StreamId <aid>
> Channelorder "L,C,R,SL,SR,LFE"
> or follow the way of ac3? or forgot this as the codecs which support
> such features also should have info about order?

Yes, the codec should have the info about order. And for PCM, it can
be in the fourcc or something similar. Storing audio channel order is
just as stupid as making distinction between YV12 and I420 in
compressed video... Yes, it makes sense for uncompressed raw video,
but otherwise it's total nonsense (since the output order has nothing
to do with the data file but rather the decoder software).


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