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

[William]

Try ALSA:default and set up your .asoundrc file for the proper device alias.
Plays all formats I have tried so far on the spdif output. With AC3 passthru
on you should be able to play AC3 streams too.

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of James D
Sent: Tuesday, May 09, 2006 5:03 PM
To: mythtv-users at mythtv.org
Subject: [mythtv-users] AC3 digital audio output from live tv


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.
 
 

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