Yeah, I would imagine that most people (99%) view films and videos using landscape. Most games are also landscape I'm pretty sure. As for who might view videos and movies in portrait? Perhaps the same confused and ignorant people who shoot videos on their phone in portrait mode and then post them to youtube, so that you get those two huge black bars on the left and right side, with a tiny video in the middle. It should be a crime to shoot and post video in that format.