MediaRecorder start error codes

Question

I want to record raw h.264 video without sound and possibly HW accelerated (and stream it later). So I decided to use MediaRecorder (and the socket hack

Answer 1

I have meet this error code in my call recorder app. this error code will show in logcat when you start media recorder while the Microphone is in use in another app like a Voice Assistant (for example: Ok google, etc) or another call recorder application.