[mythtv-users] Poor video quality

[Axium Computer Services]

I just finished installing myth yesterday.  I have the following setup

Backend

PIII 500
~160GB HDD
2 PVR-250
Fedora Linux (using Jarod's guide)

Frontend

Xbox with font hack and MythTV-Xbox


After setting up the system to record a few shows I left it for the 
night.  When I got up this morning, the backend had crashed and the logs 
had about 4MB of lines like these:
[mpeg1video @ 0x8621c68]*invalid* *mb* type in B Frame at 26 22
[mpeg1video @ 0x8621c68]*invalid* *mb* type in B Frame at 7 23
[mpeg1video @ 0x8621c68]ac-tex damaged at 12 25
[mpeg1video @ 0x8621c68]ac-tex damaged at 35 25

I'm assuming these were generated while looking for commercials.

So I started the backup up again and them started the front end.  The 
video quality is horrible there is extensive tearing, skipping, and 
anything else that can happen to a digital video.  The sound for the 
most part is good.

The frontend while playing the videos also produces messages similar to 
the ones in the backend log. 

Any help in isolating the problem would be much appreciated.

Thanks

Steven Potter