Koying from the awesome XBMC dev team is trying to get hardware decoding working on Tegra3 (which will be supported on Ouya and many other devices) and has been successful for all codecs except VC-1 and MP4 (the latter of which partially works but is unstable).
His post and the XBMC dev forum can be found here: http://forum.xbmc.org/showthread.php?tid=152005&pid=1342604#pid1342604
For MP4, he receives an error to the effect of "coding method not supported"
Is there someone here or at nVidia who can give him some guidance on how to interface Tegra3 with these two codecs?
Thank you in advance.