[mythtv-users] Artifacts in PVR-150 recordings

Brian Wood beww at beww.org
Sun Jul 2 18:34:05 UTC 2006


On Jul 2, 2006, at 11:17 AM, Sage wrote:

> I've already increased the bitrate to 9000, and the max bitrate to
> 12000.  The capture resolution is 720x480.  That's a fairly big stream
> so I thought maybe the swap partition might be affecting throughput.
> I used to have a PVR-350 card, and it handled this bitrate and
> resolution with no problems.  At the time, however, my swap partition
> was not on the same drive as my recordings.
>
> Could it be a driver issue?  I know the PVR-150 uses a newer chip than
> the PVR-350.

How many streams are you trying to write at the same time. I used to  
have a problem similar to yours if I tried to record two programs at  
the same time, or if anything else was accessing the disk in addition  
to the recorded program.

I solved that problem by re-configuring the PCI latency values of the  
disk subsystem, now the same system can record 4 programs and run a  
commflag job at the same time without problems.

You mentioned that it only happened with some programs, could it be  
just when you are recording more than one? Or perhaps running  
Mythburn or something similar at the same time ?


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