By automatically rotating video so that it is always horizontal, the app ensures that video is always kept in the default format for televisions and Apple's newer computer screens, but that it is always kept straight -- something that Instagram and other apps can do for photos -- but a feature that is unique for video.
The biggest downside is that the app effectively crops video, reducing total resolution, in order to keep the video horizontal and steady. But, as many videos get reduced in quality when posted online anyway, it may not matter to the average user.
Horizon lets you record horizontal videos no matter how you hold your device. Hold it upright, sideways or even keep rotating it while capturing, the video will always stay horizontal! You can add filters, shoot with the back or front camera and share your creations!
Ever felt you had to rotate your device while recording a video? Do you often end up with vertical videos or videos in wrong orientation? Enter Horizon!
Horizon works like magic! It auto-levels your videos while recording, using your device's gyroscope. The orientation of the resulting video is corrected so that it always stays parallel to the ground.
Article Link: 'Horizon' Allows iPhone Users to Always Shoot Horizontal Video