[MPlayer-users] Can't enable surround sound

[Fredrik Eriksson]

On 26-11-2006, at 17:58, Fabrice Delente wrote:

> Hello.

Hi.

>
> I have a Soundblaster Audigy SE - which is a 7.1 card - as my 3rd  
> soundcard.
>
> This card works perfectly in stereo mode; I can play stereo files  
> on my
> front or rear speakers:
>
> mplayer some.mp3 -ao alsa:device=plughw=2.1
>
> gives me sound on both my rear speakers, while
>
> mplayer some.mp3 -ao alsa:device=plughw=2.0
>
> would play the file on the front speakers.
>
> However, when I want to listen to a 5.1 dvd in surround mode,  
> nothing comes
> out from the rear speakers. I have tried
>
> mplayer dvd://1 -channels 4 -ao alsa:device=plughw=2
>
> and mplayer tells me
>
> AUDIO: 48000 Hz, 4 ch, s16le, 384.0 kbit/12.50% (ratio: 48000->384000)
> Selected audio codec: [a52] afm: liba52 (AC3-liba52)
> ====================================================================== 
> ====
> AO: [alsa] 48000Hz 4ch s16le (2 bytes per sample)
> Starting playback...
>
> but I get sound only on the front speakers.
>
> Any clue?
>
> Thanks.

Why -channels 4? You want 5.1 audio right? Try -channels 6

Fredrik Eriksson