(In reply to comment #11)
> FYI if you're using VDPAU, setting LD_LIBRARY_PATH and LIBGL_DRIVERS_PATH
> will not work. The libvdpau library is hardcoded to search for
> /usr/lib/vdpau/${driver}_vdpau.so.
> 
> There are two ways around this - rebuild libvdpau with this commit [1] and
> set VDPAU_DRIVER_PATH or symlink/install the library.
> 
> [1]
> http://cgit.freedesktop.org/~aplattner/libvdpau/commit/
> ?id=ee9491a1216f47e10cbb551391a01c7fcde940d2

I'm using the vo=opengl option in mpv.