> You have to make sure that you can either use xv or gl_nosw - all other drivers > (except vdpau, see the Nvidia hint above) are either slow or old/undermaintained > (or both). > For xv, try something like sudo apt-get install libxv-dev. Huge thanks mp4 now works. Also the mouse pointer is not trapped inside the mplayer window as always happened before with any picture, this is a great improvement. Installed libxv-dev like you said and recompiled # DEB_BUILD_OPTIONS="--enable-runtime-cpudetection" debian/rules binary . You know it is perhaps a bit irritating for you hackers but it saves me a vast amount of work. So thanks again. Incidentally also needed: apt-get install libvdpau-dev . Using nvidia proprietary drivers.