Originally Posted by hl_
VSync works fine with Xv and compositing for me. Just make sure to enable VSync in compiz.
(And by the way, ATI GPUs with the "radeon" driver are also tearing-free)
No they aren't, I talked to the developers on the #radeon channel. They outlined the current architecture and it will be a long time before they implement the changes necessary to make xvideo sync whilst compiz is enabled.
And xvideo is never synced with the nvidia drivers when compiz is enabled, even when compiz vsync is on. This is evident from the nvidia release notes which actually state the fact, and from experience as well.