[mythtv-users] Choppy DVD playback

[Scott]

On Apr 15, 2007, at 12:59 AM, Mitch Gore wrote:
> I am trying to use my Myth Box as a dvd player but the video is  
> really choppy.  I have read most of these problems have to do with  
> DMA not being enabled.
>
> For me it is enabled and i still get choppy playback...
>
> Some info on my box...
>
> FC6
> P4 3.4Ghz
> 512MB RAM
> PVR-150 & HDhomerun
> Nvidia 6200 with component out and XvMC enabled
>
> What else could be the problem?

Possible problems of the top of my head. Various bit of info and how  
to test and fix should be in the archives. Start with the simple and  
work your way to the more complex :)

1) XvMC is interfering with the play back. Try XV alone

2) Verify the problem with all three players: Internal, mplayer, and  
xine. If you find one player that is better than another that may  
help you debug the issue

3) Sound card buffering is causing the playback problem. This is way  
more common than you think.

4) Refresh rate of you monitor is not a multiple of the playback rate  
resulting in judder. You can find more information on judder by  
searching 'dvd judder' and judder test linux' on Google. Chances are  
this is not what your noticing though as few people seem to :)



--
Scott