Exporting Steam game recording fails on PopOS with Cosmic alpha7

Dear PopOS! Community,

I mostly use my system to play steam games and today I enabled steams game recording and replay functionality. I can preview my recordings, however exporting a clip to a file immediately fails and I think that some external dependencies are unresolved.

Anyone has an idea which libraries might be missing in order to fix the issue and successfully export my clips to a video file?

Best Carrot