On Fri, 23 Jan 2004, John W. Cocula wrote:
> Hello all,
>
> With the speaker-test program, why is it that I can get all six channels
> of surround51 through my analog OUT jacks, but I can only receive the
> front left and front right channels via the SPDIF digital OUT? (The
> external digital decoder says it's in "stereo PCM" mode, but I'm obviously
> trying to drive all six channels, as if it were in "AC-3" mode.)
>
> But with xine or totem and an AC-3 source, I get full surround51 through
> the SPDIF connector, and it switches by itself to "AC-3" mode.
>
> What can I do to address all surround51 channels via SPDIF OUT, with means
> other than an AC-3 source?
You must use an AC-3 encoder. The S/PDIF can carry only stereo or
compressed format (AC-3, DTS, MPEG, ATRAC) packed into the stereo stream.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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