Hi folks, i am not sure whether this issue belongs to the libva mailinglist or this one. I'll give it a try :-) For testing purpose I switched to vaapi-ext branch of intel-driver and libva (master is working fine). I am using xine-lib-vaapi for playback with xine which uses a vaapi accelerated ffmpeg: https://github.com/huceke/xine-lib-vaapi H.264 (non interlaced) files are played fine, but with MPEG2 (interlaced/non-interlaced) the vaapi intel driver throws an exception: > xine: i965_drv_video.c:2075: i965_check_alloc_surface_bo: assertion > obj_surface->fourcc == fourcc failed. Obviously, the obj_surface fourcc (NV12) does not fit to the fourcc of the media (I420). If I force NV12 in i965_media_mpeg2.c:517 playback is working (even deinterlaced on Clarkdale) but naturally with the wrong color space. Do you guys have any idea? Christoph Hardware: Core i3 530 Software: Ubuntu 11.11 x86 minimal with latest xorg stuff (edgers:ppa) and vaapi-ext branch for libva and intel-vaapi (git 30012012)