[mythtv-users] artifacts in pvr-150 recordings, only recently

[Johnny]

> I may have missed it in an earlier post, but what OS are you running?
> My Ubuntu 8.04 system began experiancing exactly the same symptoms
> with at one of its PVR-150 a few weeks ago.  Macro blocking and
> occasional static in the audio.
>
> I was attempting to get a non-Mythtv issue corrected at the time and
> let Ubuntu update itself.  My desktop computer, also 8.04 but always
> current with updates, runs a slave backend that records via a frame
> grabber and has had no issues so I wasn't concerned.  I think I am
> going to try running under the next oldest Kernel now that I've seen
> your posts and the trouble-shooting you have done.
>

I am running Ubuntu 8.10 Intrepid. Last night I wiped my OS partition
and did a clean install with Ubuntu 8.10. Then I updated mythtv
Jean-Yves VDPAU capable .21-fixes repository. I did a complete restore
of my mythtv database. I watched about 30-45 minutes of live tv
without any artifacts or problems. The I set up a recording in mythweb
so that it would record the show I was currently watching. As soon as
I hit "update recording settings" (ie it switch from being live tv to
being a recording), the image jumped and then the artifacts started. I
don't really know how mythtv interacts with the ivtv drivers, but it
seems that I have some setting in mythtv that changes the
configuration for the ivtv driver. Next I stopped the recording and
took a look with 'mplayer /dev/video0' and there were artifacts there
too.

So I wiped the partition one more time, did a clean install, and only
used the mythtv from the Ubuntu repositories. I also didn't do a full
database restore, I did a partial restore using the new backup/restore
scripts. So only my recordings were restored and none of my settings.
I made a few hours of recordings last night and everything was fine.
So next I updated to the mythbuntu weekly builds. I made a couple more
recordings and I haven't seen problems yet. So at this point I know it
was either some mythtv setting that was in my database, or it was
running the VDPAU patched version of .21-fixes. If things go well
today, I will update to the VDPAU version tonight and see what
happens. If everything is still good then I at least know it was some
mythtv setting from the database, but I am not going to go back and
try to figure out exactly what it was.