Well... He blinks very fast... So does the guy in the video... Did you watch it?
In case you don't undestand how that works: that system that guy uses closes one eye, and the TV shows the picture for the other eye, than the system closes that other eye, and the TV shows the picture for the eye that was closed first. So you get different pics for differnt eyes -> 3d. But I doubt that's not a joke.
Anyway, I'm just foolin around, nvm