Originally Posted by wantilles
I'm running 64-bit here, Firefox 4.0b7 (pgo-optimized), nvidia 9800GT, and the latest nvidia 256.xx drivers (they never fixed all the VDPAU problems in the 260.xx so I cannot use it for normal video playback).
I downloaded the 64-bit new flash beta you indicated, packaged for my Archlinux, and installed it via the PM.
It does not work. Acceleration does not seem to be implemented in the 64-bit version.
Only the 32-bit version features VDPAU support. Found here: http://labs.adobe.com/technologies/flashplayer10/
It works fine on 64-bit browsers when you install nspluginwrapper. I've tested it out youtubes 1080p streams on 8200 IGP, 8800GT, GTX-275, and GTX-580 and all are working fine with the 260.19.26 drivers. Perfect vsync and next to nothing for cpu usage (<1%).