This is neither a question, nor an answer. It’s a WORKAROUND.

Quite a few people are complaining about this problem, and it should be addressed.

@admin, this doesn’t look like a firmware problem, because video recording works fine when started and kept in either foreground or background. The problem occurs when video recording starts in foreground, and then the app is switched to background. I suspect there is a race condition where the background thread tries to acquire the camera but the foreground thread doesn’t release it. To further help you with finding the right place to look at, the error pops when a file is closed and a new one is opened.

And here’s the WORKAROUND: in “Settings > Automatic mode”, check “Start in background” and “Start video recording”. As the setting names suggest, this will automatically start video recording in the background and will keep the app in the background as soon as you launch it. There will be no contention between a foreground and background thread.

Looking forward to the fix rollout.