Background recording mobile application, opensource

Hey,

Anyone know of a good opensource background recording application that allows an android phone to record while the phone is locked and stream footage to a server?

I know there is https://play.google.com/store/apps/details?id=com.coolncoolapps.easyvideorecorder and that’s what I use but I don’t trust it.

The point of having this is to be able to record interactions with police for my own safety. I don’t think it’s likely that I’ll be falsely arrested, however if I do then often the only recourse is video evidence that proves my innocence. Considering how much focus there is on false arrests it’s kind of surprising how this is not a more common app.