Use it as a normal app or Video Extension. How to use it: 1. Tap video thumbnail to preview video to reverse or tap "+" to record new video. 2. Tap thumbnail again to select the video 3. Select "Overwrite" or "Save As a Copy" to start rendering. If you choose "Overwrite" you can revert to original anytime from system Photos app. Features: - Photo Extension support allowing you to quickly launch Video Reverse app from system Photos - the fastest rendering available on the App Store - iOS Photo Library support (no internal library) - record videos Front and Back camera support - reverse video and audio track - save reversed video as a New Clip or Overwrite