Solved! How to get a wired live feed from camera to phone

[Ilan]

I need a clear video (HD) live feed from a camera to an android phone. The connection can not 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 an android phone without anything else on the screen, just the live feed.
Which camera is best suitable, and what else do I need? Wires to connect the camera with the phone? Battery packs? Apps? ....

 

[helpstar]

any USB cam should do, which is android compatible
your phone needs to be able to be host by OTG USB port (on the go)