XvMC - How to use new MPEG acceleration feature

nV News Forums - How to use new MPEG acceleration feature: "xorg 6.7.0 supports XvMC, and XFree86 4.4 probably does. Check for a file named libXvMC.* in /usr/X11R6/lib. When you run X and XvMC is enabled, you will see this in /var/log/Xorg.log.0:

(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation"

[ ie. don't search .log for "xvmc" ]