Created attachment 114290 [details]
screenshot of corrupted video

Using archlinux x86_64 with the current mainline kernel (4.0rc3), xorg 1.17.1,
mesa-vdpau 10.4.6, nouveau-fw 325.15, xf86-video-nouveau 1.0.11.

Playing back a h264 video file (test file big buck bunny,
http://blender-mirror.kino3d.org/peach/bigbuckbunny_movies/big_buck_bunny_720p_h264.mov)
causes major graphical corruption in the video playback (see attachment).
Several errors appear in the kernel log. The playback is done using "mplayer
-vo vdpau -vc ffh264vdpau -fs".   (mplayer 37379)

Playing back the same file without acceleration ("mplayer -vo vdpau -fs") works
perfectly.

I have had similiar problems in the past, so this is (probably) not a new
problem of the current 4.0 development kernel.