I am rather happy with 22.04's new screenshot / screencast integration.

One thing though:

Can we configure the screencast to output mp4 rather than webm files?

Maybe another option would be a postprocessing script, but I don't see how one could trigger that automatically after the screencast is done.

  • I also need mp4... until then I will use Peek
    – lewis4u
    Commented Aug 30, 2022 at 9:47

1 Answer 1


I am also happy with 22.04's screencast integration and need to work with output other than webm. For post-processing, ffmpeg works from the shell and the front-end with LosslessCut and others. I've had success explicitly setting fps in screencast .webm files:

ffmpeg -i "Screencast from 04-07-2023 03:24:55 PM.webm" -filter:v "fps=24" Apr0723.mp4

Apr0723.mp4 then works in VLC, Blender, others better than the screencast .webm.

Confirguring default screencast app re file formats and locations or to auto-trigger an ffmpeg script is research-in-progress for me including these AskUb threads:

  • How to record my voice using the 22.04's new screenshot / screencast integration? Like for explaining what Im doing/recodrding to someone watching later
    – Lobon
    Commented Jul 4, 2023 at 1:10

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