Record your Desktop using `ffmpeg`

1. Make sure you have ffmpeg installed, by checking ffmpeg -version. If not install use sudo apt-get install ffmpeg.

2. Run the following command.

ffmpeg -video_size 1280x1024 -framerate 25 -f x11grab -i :0.0+0,0 -c:v libx264rgb -crf 0 -preset ultrafast output.mkv

• -video_size specifies the size of the recorded area. If you have a different screen size, use that instead of 1920x1080. If you want to record only an area of the screen, specify the area size here.

• -framerate specifies the frame rate, i. e. how many frames of video are recorded in a second. The lowest allowed framerate is 20.

• -f x11grab is what actually tells FFmpeg to record your screen. You shouldn't change that.

• -i :0.0+0,0 is where you specify the x and y offset of the top left corner of the area that you want to record. For example, use :0.0+100,200 to have an x offset of 100 and an y offset of 200.

• -c:v libx264rgb -crf 0 -preset ultrafast are encoding options. These specify a fast and lossless recording.

Run xdpyinfo | grep 'dimensions:' to know your monitor dimensions

Resources

• Record-Your-Desktop-Using-FFmpeg-on-Ubuntu-Linux