But it would require some deep investment of engineering and reverse engineering and hopefully by this time you have figured out it's not done with cables of changing a setting.
Since it's some simple video signal and you want a cheap display, have you considered the display from a backup camera?
http://www.amazon.com/Pyle-PLCM36-3-5-Inch-Universal-Rear-view/dp/B0037WNONS/ for example is 50 bucks and only one more thing to finish off is the +12V supply.
Does anyone know if I can use an a/v to a mini usb adapter to hook up a security camera I got for christmas to my digital picture frame for live video, instead of buying a small flat screen tv? The picture frame is capable of playing video so I was thinking it would be cool and much cheaper to see what's going on outside my house by watching the digital picture frame. I found adapters online that have the female yellow and white a/v plugs (that I could plug the male yellow and white plugs from the security camera into) and that changes it into a mini usb that can plug into the back of my digital picture frame. Would this work the same as hooking the camera up to my tv, which is its original purpose,so I can watch a constant live stream. I don't need to record, I just want to view so I can see who's coming to my door. I hope someone can help me with this and I'm praying that this is possible.thanks