[mythtv-users] Video Stutter Problems

Jerry Rubinow jerrymr at gmail.com
Wed Jan 18 15:58:46 UTC 2006


On 1/18/06, Thomas W. Shelton <twshelton at hrtoolbox.com> wrote:
>
> Hello,
>
> I have scoured the list and the Internet and discovered a lot of good
> information ... none of which has corrected my problem.
>
> I'm running on
>
>  - Dell 2.4GHz/512M ram
>  - pcHDTV 3000 Card
>  - nVidia GeForce FX 5200
>  - using NTSC with cable -- no cable box.
>  - Have Video for Linux card specified -- not the pcHDTV(wanted to get the
> basics working first)
>
> using the latest stable branch from SVN compiled with --enable-Xvmc.  I have
> "v4l" defined in my xorg.conf file.  I also have Xvmc defined in the setup.
> I believe I have also turned off all commercial flagging.  (specifics of
> which settings to check might help).  The processor also spikes when I run
> glxgears ... not sure if that means anything.
>
> When I started the image quality was terrible.  I have been able to
> significantly improve the quality but it still stutters.  I ran "top" and
> both mythbackend and mythfrontend are consuming all available resources when
> watching TV.
>
> I feel like I'm making improvements but have run into a wall.
>
> Any thoughts?

For the backend, dumb question - is dma enabled on the disk(s)?

For the frontend, I had to recompile with processor specific
optimizations before I got reasonable CPU usage.

YMMV.

-Jerry


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