The flash 10.2 beta linux 32-bit build utilizes VDPAU for hardware-accelerated playback of Stage Video. The 64-bit build does not, so this evening I spend some time trying to find a way to run the 32-bit plugin in firefox, on my Atom 330 / ION frontend. Here are the highlights.
1. install the 32-bit plugin under nspluginwrapper. A method for doing this on mythbuntu is detailed here: http://ubuntuforums.org/showthread.php?t=1635916
Of course one would want to make sure no other flash plugins are hanging around. For example, ~/.mozilla/plugins/libflashplayer.so shouldn't exist and the flashplugin-installer package shouldn't be installed.
2. Once the 10.2 beta 32-bit flash works with nspluginwrapper, install the 32-bit libvdpau
3. Hardware acceleration will not kick in for all flash video, only "Stage Video". There are a couple of demos here:
# download and install getlibs, install the 32-bit libvdpau
sudo dpkg -i getlibs-all.deb
sudo getlibs -p libvdpau1
Without hardware acceleration, these two 1080p demos ate up about 250% cpu on my frontend as measured by top, and playback was unwatchable. After setting up the plugin as above, CPU usage is now less than 30% and playback is fluid.
I should also mention that while trying to view the embedded HD Harry Potter trailer at http://www.phoronix.com/scan.php?pag...ux_vdpau&num=1 it is not hardware-accelerated, but viewing the trailer directly on youtube it is accelerated - http://www.youtube.com/watch?v=_EC2tmFVNNE