On a Toshiba AC100 (Tegra 2 harmony), with lubuntu 12.10 and R16.3 nvidia drivers,
I could play accelerated video using nvgstplayer.
I have to setup gstreamer to use nvxvimagesink.
Even though xv is reported to be present by xvinfo, all programs that try to use XV freeze the X window system. (reported at https://bugs.launchpad.net/ac100/+bug/1178199 )
Is XVideo supported by the nvidia drivers ?