Hum, googl'ing the issue I finally found: https://wiki.archlinux.org/index.php/VDPAU#Configuration
Steps: $ VDPAU_DRIVER=va_gl mpv The\ Simpsons\ Movie\ -\ Trailer.mp4 Playing: The Simpsons Movie - Trailer.mp4 Detected file format: QuickTime / MOV (libavformat) Clip info: major_brand: isom minor_version: 1 compatible_brands: isomavc1 creation_time: 2007-02-19 05:03:04 [stream] Video (+) --vid=1 (h264) [stream] Audio (+) --aid=1 --alang=und (aac) [VS] Software VDPAU backend library initialized libva: VA-API version 0.32.0 Xlib: extension "XFree86-DRI" missing on display ":0". libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/fglrx_drv_video.so libva: va_openDriver() returns 0 Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [lavc:h264] Selected audio codec: AAC (Advanced Audio Coding) [lavc:aac] AO: [pulse] 48000Hz stereo 2ch float VO: [vdpau] 1280x544 => 1280x544 420p [vo/vdpau] Compositing window manager detected. Assuming timing info is inaccurate. AV: 00:00:00 / 00:02:17 (0%) A-V: 0.000 -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

