In the iOS Human Interface Guidelines under the Live Photos section Apple says this,
"Make sure that users can distinguish a Live Photo from a traditional still photo. It’s especially important to help users make this distinction when they can share the photo. The best way to show users that they’re viewing a Live Photo is to display a little movement that gives a hint of the experience. In cases where a hint isn’t possible, you can display the system-provided badge on the Live Photo. A Live Photo never displays a playback button that looks like a video playback button."
I am kind of confused on how to provide that little hint of movement in my live photo. How do I provide that hint of movement?
You don't need to dissect a Live Photo into still frames and construct an animated UIImage, or dig out the Live Photo's movie file... It's much simpler.
PHLivePhotoView.startPlaybackWithStyle: and pass
.Hint for the playback style to get the "hint" that the HIG is talking about.