[MPlayer-users] hwac3 with 5.1 on old nforce 220D s/pdif gives stereo only

[Dominik 'Rathann' Mierzejewski]

On Tuesday, 23 May 2006 at 09:57, Michael Holland wrote:
> Problem solved, so I'll explain for the archives.
> 
> nForce S/PDIF is working well.
> The problem was caused by
> 1) I had my amp set up incorrectly
> 2) mplayer was throwing me a red herring by telling me it was playing 
> 2-channel when in fact hwac3 was sending the full raw audio to the amp.
> 
> I've quoted the output again below. Why was mplayer telling me that
> it was only playing 2 channels? Unfortunately it caused much waste of 
> time by missing the real problem. Is this something that could be fixed
> without too much difficulty?
> 
> >$ mplayer  -ac hwac3 -vo null sample,dvd,ac3-5.1.avi
> >Forced audio codec: hwac3
> >Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
> >No accelerated IMDCT transform found
> >hwac3: switched to AC3, 448000 bps, 48000 Hz
> >AUDIO: 48000 Hz, 2 ch, ac3, 448.0 kbit/29.17% (ratio: 56000->192000)

AFAIR it originally did use 6ch, but most cards supporting digital out had
broken drivers which worked only if you told the driver it was 2ch and sent
6ch data anyway.

Regards,
R.

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