Shooting Poker Videos

I just want to get people's opinion on this idea. What do you think of the idea of starting a business where you videotape client's while they play poker, the point being to improve poker skills. I would have a special table set up with cameras in the table for showing the cards, and several cameras around the room. This would have to be in Las Vegas or the like with a lot of poker players around. Also, with the poker players permissions, I could also sell the tapes, if some of the players were worldclass players. Even if they were just average players, i think it would be very educational. What does anyone think. And this wouldn't be a full-time business, just more of a side thing. I am a video and film major and am trying to put my two interests together.