[mythtv-users] Hauppauge PVR-500 tinny audio

Taco Mel taco_mel at yahoo.com
Tue Nov 6 15:49:12 UTC 2007

> When I had the tinny audio problem on my PR-150
> (installed as /dev/video0), I needed to run
> /usr/bin/ivtvctl --device=/dev/video0 -q1
> /usr/bin/ivtvctl --device=/dev/video0 -c

I did a little digging into the v4l2-ctl options and
came up with the following that works for me, in
limited testing:

v4l2-ctl -d 1 --set-audio-input=2
v4l2-ctl -d 1 --set-audio-input=1

The "1" corresponds to /dev/video1 and the audio input
#1 is what is really used, and #2 is not connected to
anything.  Switching to a non-connected source and
then back to the connected source seems to solve the

What I ended up doing is calling the first v4l2-ctl
command, then calling directv.pl, and then calling the
second v4l2-ctl command.  Essentially, disable the
audio, change the channel, enable the audio.  In very
limited testing, I have not been able to get the
"tinny" sound again.  I've got these three commands in
a script that I have set up as the channel changer.

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