libva-intel-driver:
    intel still has hangups
    osd has sometimes wrong size (workaround written)
    can show defect surfaces (white bars on top of frame) only interlace
    defect shown upto driver surface swap?

libva-vdpau-driver:
    G210 osd update too slow (needs hardware problem workaround)

x11:
    support resize of x11 window
    support fullscreen window
    support fullscreen / window toggle

video/audio asyncron

playback of >2 channels on 2 channel hardware