[mythtv-users] Stuttering

Leighton Brough brough at baremetalsoft.com
Thu Jun 15 13:40:35 UTC 2006

> I used to have stuttering but only when playing HD content. I refused 
> to think that it was hardware problem since my hardware had plenty of 
> power for even 1080i shows. I googled and tried every conceivable 
> option. After much trial and error I realized (based on no scientific 
> evidence) that using xvmc (out of all things) was causing the 
> stuttering. This was both with an on-board nvidia 6150 and PCIe 
> 7300GS. I turned off xvmc, played with vsync a bit and the stuttering 
> went away.
> Another interesting thing I found which I only have speculations about 
> is that 1080i content is playing smoother then 720p even though 1080i 
> is suppose to have more "data". I guess the fact that it's interlaced 
> and has only 540 lines in each frame is making it play smoother but I 
> may be talking complete nonsense. After all 1920x540 is still larger 
> then 1280x720. Hmm...
Which version of MythTV are you using?

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