[mythtv-users] Occasionally recorded videos have no sound?

Ross Campbell ross.campbell at gmail.com
Tue Feb 13 17:13:49 UTC 2007

On 2/12/07, Jared C. Davis <jared at cs.utexas.edu> wrote:
> I'm using a PVR-350 and Myth 0.20 on Ubuntu Edgy.  I'm just recording
> off the antenna.  Normally everything works fine, but sometimes a
> whole show will record and there will be no sound when I try to play
> it back.  It still records the video portion, but the movie file
> itself seems to have no sound even when I play it with an external

I rarely have had this happen as well, and I believe that for me, it's
related to times when I'm listening to streaming audio via mythstream
when a recording starts. Somehow, I suspect that my system and how the
audio is configured (alsa via oss and sound being fed through the
internal sound card?) is allowing mythstream to grab exclusive use of
the audio card and getting in the way of sound being recorded.

It rarely happens, so I'm not too worried or interested in debugging
it. Hope my datapoint helps.


> I don't know how to really figure out what's causing this, and
> unfortunately it happens only once or twice a week so it's hard to
> reproduce.  The only other thing I can really think about saying is
> that sometimes when I'm using XMMS, it'll go to switch songs and I'll
> get a message that the sound card is already in use.  I have to click
> OK, then i can click again to play the next song.  So maybe there's
> something buggy with my sound card drivers, but I don't know if that
> would even have any impact on recording the sound to the file.
> Anyway, lspci reports that the sound card is the Intel Corporation
> 82801G (ICH7 Family) variety.

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