Camera Trick Challenge

I love a good magic trick, don't you?

It's clearly a viral video, but they aren't lying when they warn you at the beginning that it hasn't been edited in any way. The answer to how this one was done has already been posted in the comments and video responses on YouTube. But I urge you to watch the short video all the way through (1:43) and see if you can't reason out how it was done. It's not that hard, but it is very clever on their part. Good luck, and let me know what you think!