HD Camera Trick Challenge

[CrashHelmut]

Ok, I know the video is viral marketing, but it's still a nifty trick.

Can you figure it out?

http://www.youtube.com/watch?v=iX8iVo5vc8o

[Falafel]

It's not a mirror - there are two rooms. Look at the wall behind the guy. There's large AB at the beginning, but when he looks through the "mirror" it's BA. That's not how a mirror works. Also, the two women are noticeably different.

Well done, though. It was fun.