No surround sound with Creative SB Live! card

[David Demelier]

On 15/06/2012 05:43, Edward M wrote:
> On 06/14/2012 09:03 AM, David Demelier wrote:
>> I have an old SB Live! card with a 5.1 speaker set, but i can't get
>> sound from center and rear speakers with mplayer.
>>
>> I'm using the snd_emu10kx driver and when I try to play a DVD I get
>> sound only through the front speakers (and LFE) like a 2.1
>>
>> Adding -channels 6 to the mplayer args does not help.
>>
>> Cheers,
>
> Sounds like the DVD surround audio is encoded in AC-3 Dolby Digital or
> DTS. So a decorder is needed.
>

That's what mplayer says:

==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 6 ch, s16le, 448.0 kbit/9.72% (ratio: 56000->576000)
Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
==========================================================================
AO: [oss] 48000Hz 6ch s16le (2 bytes per sample)

What do you mean by "a decoder is needed"?

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Cheers,

-- 
David Demelier