I need a clear video live feed from a camera to an android phone. The connection does not have to be wireless because i have to use it without any internet. The camera and phone will be 2 or 3 meters apart at most. It also has to be battery powered for at least 3 hours.
I also want the video displayed on my phone without anything else on the screen, just the live feed.
Which camera is best suitable, and what else do I need?