Yes I have also seen these 'reverse parking screens' on amazon. The connections say AV but from the images they look more like the red / white / yellow connections on the back of a TV. My camera doesn't have any cables for its AV port so I'm unsure how this would work. Also not sure on the power either as I assume its intended to power in to the car?
Red White Yellow are AV (Audio Video - Analogue) connections. Red is right channel audio, White is left channel audio and Yellow is composite video (CVBS). It's the most common (and worst quality video wise connection there is). S-Video is an improvement as it splits Composite into separate connections for luminance and chrominance. The best analogue video connections are RGB and Component (The latter is capable of full HD).
Component video uses 3 connections (Video synch is carried on one of the cables)
RGB (Red Green Blue) requires 4 as video synch is separate. RGB on a scart cable uses the CVBS connection to provide video synch.
Any camcorder should have CVBS video out as an option if it has an AV socket. 12V power shouldn't be an issue.