If you shot a video with just one angle, it would be pretty boring. When you shoot a video you should get in different shots and angles so you can see someone's perspective. In the NBA they have cameras in the backboard to see players when they dunk. In the NFL they have cameras in the pylons to see if the players got their feet in bound. It also makes it a lot more interesting to look. If you get shots like medium and wide you can show the setting. If you do opposite you can really show your main character. Shooting angles is what makes your video different from other, boring videos.