Cannot play *.mp4 files?

[lugoteehalt at yahoo.co.uk (Lugo)]

> 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.