[mythtv-users] Re: PVR-350 with choppy video

Bennett Leve bleve at nightmare.com
Fri Apr 22 04:22:15 UTC 2005


Actually I was incorrect with this observation.  If I let the 
mythfrontend run for some time it spikes up to 92% CPU even if the video 
out on the i819 is used.

I do see prebuffering messages constantly, like every second when the 
PVR-350 is used for the output to the TV but if the i810 is used. 

Could this be because the backend is too slow or too fast when the 
PVR-350 is used?  Is there a way to tune around this?   Others have to 
running with similar configs, so hopefully I don't need to upgrade the 
box to something with a faster CPU.   It seems to me the video quality 
is a bit better with the PVR output vs. the i810 video quality.

Thanks,

-Bennett


Bennett Leve wrote:

>
> Hello all
>
> I recently built a Mythbox using a Dell GX110 which is an 800mghz 
> machine.
> When using the video out on the built in video card playback looks 
> good, but when I use the PVR-350 for playback the video is choppy but 
> the overall picture quality is great.
>
> I noticed that the mythfrontend program is taking 90% of the CPU, but 
> when I use the onboard video card (i810) it uses 50% of the CPU.
> I followed the directions from http://wilsonet.com/mythtv/fcmyth.php 
> to do the initial install.
> Not sure where I should start looking to see why using a different 
> video source would use so much more CPU for the mythfrontend.  Any 
> pointers would be greatly appreciated.
> -Bennett
>
>



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