Re: Video playback corrupted
Just now, I was experiencing the problem. Before finding this thread, and using totem to watch videos. I went into the Multimedia Systems Selector in Gnome, and on the video tab, I left the output plugin set to XV, but I changed the device from Default to "NV05 Video Blitter" and the problem went away for me.
If I set it to "NV17 Video Texture", it comes back for me. I suspect it is the XvmcUsesTextures option in my xorg.conf. I turned it off, but haven't restarted my X session yet.