Can I capture video clips to my phone during "playback" mode? [Moved]

I thought I should be able to capture video clips on my phone during “playback” mode, but haven’t been able to figure out how to do it. Is this possible? For example, if I’m looking at a 3-minute video clip during playback I might like to be able to save 20 or 30 seconds of the clip to my phone. I’m not interested in removing the memory card and manually copying video files off the card. I’ve saved clips like this with the Xiaomi Yi security camera but I realize the firmware is not the same.

The ability to record during playback is in beta right now. In the mean time, if you are using an iPhone on iOS 11, you can do a screen recording to capture the video (but not audio). I don’t know if Android has that ability or not.

That’s a crude way to do it but it’s better than nothing. Thanks for your help.