Hi, OS is Gentoo amd64 and my laptop is a Samsung X360 (so gm45). I'm using x11-libs/libva git (g45-h264 branch) and x11-libs/libva-intel-driver bit (g45-h264 branch). media-libs/gstreamer-0.10.36 media-libs/gst-plugins-base-0.10.36 media-libs/gst-plugins-bad-0.10.23 Using media-plugins/gst-plugins-vaapi git. Also using: linux 3.4.0-rt7 (realtime patchset) libdrm git x11-drivers/xf86-video-intel-2.19.0 (sna off, vaapi is much slower with sna on) media-libs/mesa-8.0.2 x11-base/xorg-server-1.12.1.902 "SwapbuffersWait" "off" "vblank_mode" value="0" kwin desktop effects off vaapi h264 works flawlessly with mplayer: mplayer -vo vaapi -va vaapi test.mkv MPlayer SVN-r33094-4.5.3 (C) 2000-2011 MPlayer Team Riproduco test.mkv. Rilevato formato file libavformat! [matroska,webm @ 0x335a580] Estimating duration from bitrate, this may be inaccurate [lavf] stream 0: video (h264), -vid 0, test.mkv [lavf] stream 1: audio (ac3), -aid 0, -alang eng, AC3 5.1 channels, 640kbps VIDEO: [H264] 1920x1080 0bpp 24.000 fps 0.0 kbps ( 0.0 kbyte/s) Informazioni file multimediale: title: test.mkv Load subtitles in ./ libva: libva version 0.32.0 libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib64/va/drivers/i965_drv_video.so libva: va_openDriver() returns 0 ========================================================================== Apertura decoder video: [ffmpeg] FFmpeg's libavcodec codec family [VD_FFMPEG] VA API accelerated codec. Scelto codec video: [ffh264] vfm: ffmpeg (FFmpeg H.264) ========================================================================== ========================================================================== Apertura decoder audio: [ffmpeg] FFmpeg/libavcodec audio decoders AUDIO: 48000 Hz, 2 ch, s16le, 640.0 kbit/41.67% (ratio: 80000->192000) Scelto codec audio: [ffac3] afm: ffmpeg (FFmpeg AC-3) ========================================================================== Unfortunately it doesn't work with gstreamer-vaapi: niko at laptop ~ $ dragon test.mkv QPainter::begin: Paint device returned engine == 0, type: 2 QPainter::begin: Paint device returned engine == 0, type: 2 QPainter::begin: Paint device returned engine == 0, type: 2 QPainter::begin: Paint device returned engine == 0, type: 2 No accelerated IMDCT transform found QPainter::begin: Paint device returned engine == 0, type: 2 QPainter::begin: Paint device returned engine == 0, type: 2 libva: libva version 0.32.0 libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib64/va/drivers/i965_drv_video.so libva: va_openDriver() returns 0 dragon: i965_avc_bsd.c:337: i965_avc_bsd_slice_state: Assertion `frame_idx < (sizeof(i965_h264_context->fsid_list) / sizeof((i965_h264_context->fsid_list)[0]))' failed. KCrash: Application 'dragon' crashing... KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit sock_file=/home/niko/.kde4/socket-laptop/kdeinit4__0 dragon: Fatal IO error: client killed [1]+ Stopped dragon test.mkv While with gst-launch I get: niko at laptop ~ $ gst-launch-0.10 -v filesrc location=test.mkv ! matroskademux ! vaapidecode ! vaapisink Impostazione della pipeline a PAUSED ... libva: libva version 0.32.0 libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib64/va/drivers/i965_drv_video.so libva: va_openDriver() returns 0 La pipeline ? in PREROLLING ... /GstPipeline:pipeline0/GstVaapiDecode:vaapidecode0.GstPad:src: caps = video/x-surface, width=(int)1920, height=(int)1080, framerate=(fraction)5000000/208333, pixel-aspect-ratio=(fraction)1/1, type=(string)vaapi, opengl=(boolean)true /GstPipeline:pipeline0/GstVaapiDecode:vaapidecode0.GstPad:sink: caps = video/x-h264, level=(string)4.1, profile=(string)high, codec_data=(buffer)01640029ffe1001867640029acd940780227e584000cb73402625a023c60c65801008668e93b3ce5531cc305d2628d13080214868783a1c0d04e12142c0ac0da02fe10042ad35e9e850b748c778a1410088b172105449ca3050e204448b20a4d8a081827090809848541dc4290a43164215a201900cae8340f81e86f03300b6017002ac05981d61a07802a8400a902087404700bc010506e036404b811805902e07203e0087ff858f0, stream-format=(string)avc, alignment=(string)au, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)5000000/208333 gst-launch-0.10: i965_avc_bsd.c:337: i965_avc_bsd_slice_state: Assertion `frame_idx < (sizeof(i965_h264_context->fsid_list) / sizeof((i965_h264_context->fsid_list)[0]))' failed. Annullato Hope you can help, no one is going to maintain mplayer-vaapi anymore and there is no hope for mplayer2-vaapi. I also tried vlc with vaapi but it sucks hards (it stutter, you just can't watch a video with vlc and vaapi). Thanks, Niccol?