[Mashimo]

> Even recording "clean" video by itself is unexpectedly tricky.

VLC, OBS, ffmpeg (and webcam app on windows) should all be able to do it.

[sho]

I ran into so many obscure, incomprehensible issues with OBS I just gave up. I'm sure the other two can also be coerced into doing what you need but Quicktime just works. Maybe things are different on PC.