Sorry, peeps, it all sounds too complicated for this old dinosaur! I'll just leave it switched thru' the key.
I tried it on a short trip this afternoon, about five miles altogether, including about an hour parked up, but for some reason it only recorded the last three seconds as I parked the car at home!
I guess me and technology just don't get on!
As for the reverse camera, well, why would I want to watch videos, or listen to music on it? I want to use it to hitch up my caravan, that's all! But apparently on the one Herself bought, a Tech Bean, it does all these things I don't need,so has miriads of wires, and no install instructions!
I despair!!!!!!!!!!!!!!!!!!!