$ ffmpeg -f x11grab -video_size 1920x1080 -framerate 25 -i $DISPLAY -c:v ffvhuff screen.mkv To take a screencast screen.mkv with lossless encoding and without audio: Where -video_size specifies the size of the area to capture. $ ffmpeg -f x11grab -video_size 1920x1080 -i $DISPLAY -vframes 1 screen.png See FFmpeg encoding wiki and ffmpeg(1) § EXAMPLES.įFmpeg includes the x11grab and ALSA virtual devices that enable capturing the entire user display and audio input. ![]() However you may want to force the number of threads available by the parameter -threads number. ![]()
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