[MPlayer-users] ALSA (0.9.1) + mplayer (0.90rc4) + Audigy2 + channels & surround problem

[Arpi]

Hi,

> >  finally I got my Audigy 2 soundcard and Genius SW HomeTheatre 5.1 repro. 
> > I've installed ALSA emu10k1 - the system sound worked. Then I tried to play a 
> > movie and noticed the sound isn't going from all speakers but only from rear 
> > and center+subwoofer ones. The front left/right is quiet.
> > 
> >  I know about mplayer options -channels 6 and/or -ao alsa9:surround51 but all 
> > these result into NOSOUND :(
> > 
> >  Is it possible to made mplayer to use 5.1 reprosystem even when the movie has 
> > only 2 channels? I think so, but I cannot managed it ...
> 
> i haven't been able to do that. -channels6 only works with movies with 6
> audio channels.. tried many many many times :(

should be possible, either with the surround filter (it makes 4 ch from 2)
or by manual re-mapping channels using the pan filter.
(i mean the new -af option, not the obsolete -aop)

btw all this is true only for PCM output, ie not available if you want ac3
passthru via spdif.


A'rpi / Astral & ESP-team

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