Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7)
This works. Just hit pause on the video where you would like to create a picture. Then hit the power button and home button at the same time. Works great.