I work with video on a daily basis. I'm also a registered iPhone developer and I can without a doubt say this video is fake. Beyond the fact that even if there were API calls (or a library) that allowed you to pipe video thru the microphone port, it's a low bandwidth port and couldnt sustain the data rate. A more convincing video would have used the data port or even iPhone 4.3 os' airstream ability. I am not even going into the obvious problems with how the video upconverts and displays with "glitches" that conveniently look cool but are a 100% giveaway as the screen is not rendered like that.

Very good points, Jim. I didn't think about the iPhone's inability to send video through the headphone jack. -gs

So yeahh.. This video is a hoax. The iPhone is incapable of streaming video from the headphone port. The iPod classic however can. BUT. The transmission power of that microchip would be extremely limited. Also, I can pretty safely say that next to none of those screens are updated wirelessly. And if they were, there would be firewalls to prevent exactly what was shown here in fear of a public scandal and lawsuit. So, this guy's makeshift "video hacker" would need to be able to break complex algorithms in a matter of seconds based on its proximity to said firewalls and video source. ALSO; This transmitter would (if capable of the previously stated) have to be able to use the computer/screen's insulated wire/circuitry to be a receiver for this "piggybacked" video signal. (nearly impossible).

So... in conclusion. No. Not possible