MythTV HDTV HDHomeRun Video Jitter / Stutter (SOLVED)

[sr66]

Just wanted to document this here in case it is helpful for someone else
I have a AMD 3400 2.2 MHz Processor and 512 MB RAM. So the HD Video jitter was very annoying.
nvidia 6200 PCI card

The motion compensation (xvmc) did the trick http://www.mythtv.org/wiki/XvMC
But it was not straight-forward for me. So here are the steps I took to get the playback to be smooth.

1) Playback profile CPU-- under mythtv settings
2) turned off kernel agp by passing agp=off in grub
3) emerged x11-libs/libXvMC
4) created file file /etc/X11/XvMCConfig with the following single line
libXvMC.so.1
5) eselect xvmc set 2 (so that xorg-x11 is set instead of nvidia)
6) Set the following options under section "Screen" in /etc/X11/xorg.conf
Option "NvAGP" "3"
Option "UseEvents" "true"