Q:"How do I rotate a cell phone video 90 degrees in Adobe After Effects?" - Quora
Whether to happily have this celebrated tool, After Effects, only to find that it is not as easy to use? Like above user, if your video is also not in the right direction, and you're going to let After Effects rotate video, you might as well step into the quick guide here. No matter what you need, fixed 90 degrees or a specific angle, it can work to achieve.