[mythtv-users] alsa rate change on via8237 spdif

Robin Gilks g8ecj at gilks.org
Fri Jun 22 01:33:39 UTC 2007


>
> and IEC958 unmuted, IEC958 Playback AC97-SPSA on 100 ("full" volume in
> alsamixer), IEC958 Playback Source on IEC958 In.  Then set up Myth to
> use ALSA:digital or ALSA:mixed-digital.
>
> amixer sset 'IEC958' unmute
> amixer sset 'IEC958 Output' unmute
> amixer sset 'IEC958 Playback AC97-SPSA' 3
> amixer sset 'IEC958 Playback Source' 'IEC958 In'
>
> At least one of the two configurations will work.  I.e. device should be
> 0 and subdevice should be either 0 (default) or 3 in digital-hw.  You
> should use the configuration file from the wiki, where the only
> modification is to the device (and possibly adding a subdevice) for
> digital-hw.  Then specify either ALSA:digital or ALSA:mixed-digital as
> your "Audio output device" in Myth.
>
> The IEC958 settings will differ depending on which approach you use, so
> ensure they're as specified.
>
> If both approaches work, use the second as it may allow you to do nice
> things like 32kHz or 44.1kHz AC-3 passthrough (but doing so would
> require additional plumbing), which you probably couldn't do with the
> first.

Thanks Mike - I'll have a go with this when I get home tonight. The
commandline stuff is a new avenue to explore so I'm optimistic again!

-- 
Robin Gilks



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