[mythtv-users] MythTV Hauppauge PVR-150 Recordings fromComposite are destorted

Lorenzo Mueller lorenzo.mueller at mail2web.com
Sun Nov 4 17:48:52 UTC 2007

Thx for your input, but it still does not work.
As I have a new version of ivtv, the ivtvctl-command with your parameters does not work.
I used instead:
v4l2-ctl -a 0  and
v4l2-ctl -a 1  and
v4l2-ctl -a 2
With input 0 i got the sound of the tuner.
With input 1 i got the distorted sound of the composite-input
With input 2 i heard nothing.
I do not know if it is "distorted". It sounds like when I would record this with 11 kHz or so...
when I did:
cat /dev/video0 > test.mpg
The sound of the composite-input is OK. So I assume that it is something mythtv-related (Maybe a setting or so...)
Hope go hear from someone a new "hint" or workaround or so...
Thx in advance


Von: mythtv-users-bounces at mythtv.org im Auftrag von Cool Frood
Gesendet: Sa 03.11.2007 14:39
An: Discussion about mythtv
Betreff: Re: [mythtv-users] MythTV Hauppauge PVR-150 Recordings fromComposite are destorted

On 11/2/07, Lorenzo Mueller <lorenzo.mueller at mail2web.com> wrote:
> Hi all,
> I have a Hauppauge PVR-150. When I record from the build-in tuner,
> everything works fine.
> I have problems when I want to record shows from the composite-input. The
> video is fine, but the sound is distorted and sounds really strange.
> It is very serious that when I watch LIVE-TV from the Composite, the sound
> is OK. Also when I record from LIVE-TV (Press "r") the sound is OK. It is
> only when I make a scheduled record.
> Maybe someone could help me, because I cannot explain why the sound is only
> destorted from the composite-input at scheduled records.
> Thx in advance
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
I had this problem too back when I was using the composite input from
my cable box.  Now I don't have a cable box anymore and I'm using the
tuner on the PVR-150 so I don't have this issue any more.  I came
across this hack when I was trying to deal with the problem:

 # Some variables used to remember if the device is in use or not
 # Loop forever
 while true
    # Is the video device in use ?
    fuser /dev/video0 2>/dev/null >/dev/null
    if [ $? -eq 0 ]
       # Something is using video device and this is the first time
we notice this
       if [ "$record_video0" = "NO" ]
          echo "   recording on video0"
          sleep 5
          /usr/local/bin/ivtvctl -d /dev/video0 -q 0
       # Not recording
       if [ "$record_video0" = "YES" ]
          echo "   not recording anymore on video0"
    sleep 1

I put this in a script called sound_fixer and started this in my
.xinitrc (or .xserverrc, I forget).  You might have to play with the
"-q" value in the ivtvctl command to figure out which one works for

Hope this helps,
mythtv-users mailing list
mythtv-users at mythtv.org

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