mtdean at thirdcontact
May 30, 2006, 5:11 PM
Post #3 of 3
(639 views)
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On 05/30/06 19:57, Justin The Cynical wrote:
>Eric Smith wrote:
>
>
>>I'm hoping this issue is a minor one that I am just over-looking but I
>>can't seem to figure it out. I can't get AC3 passthrough to work
>>(through mplayer, xine, or myth). In each case whenever I enable AC3
>>I get a horrible pulsating static sound through my receiver and the
>>auto detection on the receiver never changes from 2 channel. Hardware
>>wise, I've had the same setup outputting AC3 on a Windows box in the
>>past so I'm fairly sure its not a hardware issue. Any thoughts would
>>be greatly appreciated.
>>
>>
>I had this issue as well. Alsa/Myth was sending the AC3 data through
>the filter and not to the receiver directly. To fix it, I had to change
>the audio output to ALSA:spdif, or turn off the AC3 passthrough. I used
>the spdif output choice.
>
>This, of course, broke myth music for me, as it didn't run the mp3 data
>through the resample filter. I've not gotten around to fixing it yes,
>as getting the AC3 working for the digital broadcasts was more important
>to me.
>
Yeah. It's sounding like the automatic conversion plugin is
interpreting the signal. I guess that means you can use the digital
output alias defined by your card definition (i.e. "spdif" or "iec968")
or just use "digital-hw" for the same effect (but without having to
figure out which alias is appropriate for your card).
Mike
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