Horizon Keeps iPhone Video Shooting on the Level

Even if you've never been guilty of sharing one of those annoying vertical videos, you may have run into a situation where you've been filming and moving around at the same time -- and because you were scrambling over a rock or playfully wrestling while recording, your fun little video perspective spun vertical on you. Or, if you're like me, you might have taken a vertical photo -- then realized that you had a video-ready moment to capture and started recording video, only to realize that you started recording in upright mode. Once you start, you're stuck.