Live photos are basically three second movie files—3D press the photo and watch it move. The cool thing, though, is you can edit them in the Photos app just like they were any other photo. Here’s how to edit your live photos, as well as change the key photo and video length, and convert them to different formats.
Apple has tried really hard to make Live Photos as simple and easy to work with as regular images. Despite having a three second video embedded in the file, all the editing tools in the Photos app work as normal.