Optimizing MythTV for HD playback with Nvidia
Here are a few options to optimize playback so you do not use 100% cpu. I have found these too dramatically help performance on my systems. You may need to tweak a few of these to your liking depending on your system setup.
First off, the biggest thing to turn on is XvMC.
- Edit your /etc/X11/XvMCConfig and make sure you change your line to libXvMCNVIDIA_dynamic.so.1
- Make sure that file exists (updatedb and use locate)
- In the mythfrontend setup, choose use Standard XvMC - if its running, your OSD should change to b/w
The next things are to manually edit your xorg.conf with nvidia optimizations.
- Option “NVAGP” “1″ in your device section, also try “2″ - helps with prebuffering pauses
- Option “UseEvents” “True” in the device section as well
- Also use BOB or linear blend for deinterlacing
With these changes, you should have your HD playback running with about half the cpu it did prior to turning these settings on, try tweaking with other settings and let me know if you have anymore from your own experiences that may be helpful.
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