Why does my Logitech C920 camera turn off and on again during recording with Photo Booth?
I'd first connect the camera directly, not via any hub. I have the same C920 &amp; it can be sensitive to that. (Hmm, of course that may not be possible on USB-C… which would make eliminating the hub itself as a cause much tougher.)
Secondly, I would watch Activity Monitor whilst the recording is running, see if you can spot any jump in activity even on an unrelated process.
Thirdly, ensure as much as possible that any other user-controlled process isn't going to need resources at the same time. Video recording is resource-intensive, so try not to share the task with anything else that may be greedy.
Lastly, check you have lots of disk space so that you're not choking the process at write. As the issue increases with recording duration, this may be high on the list. Potentially video write &amp; virtual memory may start to compete for the same space.