About 1 week ago there was this commit:

http://cgit.freedesktop.org/libva/co...f402d1ee85a8c1

It adds that new tool:

$ avcenc
Usage: avcenc <width> <height> <input_yuvfile> <output_avcfile> [qp]

Can be tested with

http://kanotix.com/files/fix/mplayer-vaapi-latest.txt

I currently just put every test binary in the vainfo package as hack. Now i want to see some results...