[mythtv-users] AC3 digital audio output from live tv

[James D]

Ok, so how do you get audio when watching ATSC live tv?
  my understanding is all ATSC audio is AC3 encoded, so I've checked to pass AC3 through and I have my myth box connected to my home theather receiver via SPDIF. when I play videos that have AC3 audio in MythVideo (with mplayer -ao alsa:device=spdif) it works fine. This would make me think it's not capturing the audio, but I'm not so sure as when I first set it up I had left the audio device as /dev/dsp. I plugged headphones in to analog line out for shits and grins while in live tv and i heard a bunch of static noise which I'd guess is the encoded AC3 trying to be played back as normal audio, so I think if I can just get the data to go to my SPDIF out instead it'd work, but I tried changing the audio device to ALSA:spdif and got silence from my home theater as well as the line out.
   
  any help would be appreciated
  btw, my tuner is DViCo Fusion HDTV Lite. it has a connector to the motherboard CD-audio-in, but my understanding is this is only for analog audio.
   
  - James

		
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