When I record my desktop or recording video with ffmpeg it generates a black video. My operating system is Ubuntu 18:04 bionic kernel 4.16

Here is the command I'm using :

ffmpeg -f x11grab -s 640x480 -i :1.0+10,20 -vf format=pix_fmts=yuv420p -f v4l2 /dev/video0
  • Does recording into a file work? – Hermann Mar 16 '19 at 20:07
  • @Hermann not working just a black video – cleanguy Mar 16 '19 at 20:26
  • 1
    Are you sure you want to grab from :1? What does ffmpeg -video_size 640x480 -framerate 30 -f x11grab -i :0.0+0,0 -c:v libx264 -crf 16 -t 10 /tmp/test.mp4 do for you? Any interesting output on the console? – Hermann Mar 16 '19 at 22:15

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