Hi there, With my brand new Intel 8th gen laptop (Intel Corporation UHD Graphics 620 (rev 07) with 8 core Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz on Archlinux, I thought I'd experiment with hardware accelerated capture as opposed to my normal 2-step approach of 1) recording to mkv https://github.com/kaihendry/recordmydesktop2.0/blob/master/x11capture 2) converting mkv to mp4 https://github.com/kaihendry/recordmydesktop2.0/blob/master/htmlvideo
However with -vaapi_device /dev/dri/renderD128 -movflags +faststart -vf 'format=nv12|vaapi,hwupload' -c:v h264_vaapi it seems to skip frames. https://s.natalian.org/2018-03-20/1521512464.mp4.log https://s.natalian.org/2018-03-20/1521512464.mp4 Ffprobe seems to say it's 30fps: Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 2560x1440, 722 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default) But during playback, it would appear not! Is there a good way to test or know I've dropped frames in my screen capture? How can I prevent frame dropping? Kind regards, _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".