Android: recording video stream to 2 files at the same time - is it possible or not?

Question

Android

Is it possible using the android API to record a video stream from a [usb] webcam simultaneously to two different files? I'm trying to understand why video clips are not overlapped in video recorder programs, i.e. why 1-3 seconds before the "limit" on the file size is exhausted, parallel recording to another file does not start.

Answer 1

I won’t tell you about the Android API, but even with the help of GStreamer this is not trivial: you need to dynamically connect filesink to the tee element and turn it off in a timely manner. How to keep track of the size of the file being created is a separate task.