I need to know if it's possible to output video from an iPhone 4 via 30-pin connector to USB/mini displayport and display it on a Macbook Pro. A friend of mine is paranoid about his car and wants to examine the hood for scratches at high magnification using the Airmicropad app (he has the device to go along with it, http://itunes.apple.com/us/app/airmicropad/id374881544?mt=8 ). The iPhone screen is too small and he doesn't have an iPad.