Hi Janusz,
BTW, my 12-bit framebuffer display support has been accepted and included in mplayer svn revision 31139 on May 6th. Using it, I can enjoy a prescaled 422x316 5fps MSMPEG-4 encoded live video stream playing fluently in fullscreen mode on my E3 display.
This is all excellent news. Thanks for your hard work.
Cheers, Ralph.