[mythtv-users] choppy audio during/after recording TV

[Kevin Kuphal]

Dean Wilson wrote:

>I'm having trouble with recorded audio through my PVR250, and I'm
>hoping someone here can point me in the right direction to resolve the
>issue.
>
>When I first boot my mythTV box, I can use "mplayer -vo xv
>/dev/video0" to play a video stream with no problems -- both audio and
>video are fine.  (The same holds true when I'm watching live TV in
>mythTV.)
>
>However, once I record a program, the audio gets louder and extremely
>choppy.  What's worse -- once I've recorded a program, the audio
>problem persists even after quitting mythTV !  (Running "mplayer -vo
>xv /dev/video0" has choppy audio as well).  The only fix I've found so
>far is to reboot the machine.  (Unfortunately, this only works until I
>try to record again, which renders my PVR250 with mythTV rather
>useless...)
>
>Has anyone encountered a similar problem?  It seems like mythTV may be
>making a change to the card settings, but I don't know how to figure
>out what the change is, or what to do about it.
>
>I'm relatively confident that the problem isn't in my audio setup --
>sound (and recordings) continue to work just fine for my Air2PC card,
>and music/Videos play without any problem.
>  
>
Is your gain/level set too high after the recording starts?  Check your 
alsamixer settings before recording (right after reboot) and then again 
after.  Maybe myth is changing your level too high.  I think my system 
would sound choppy and loud if I had that too high.

Kevin