Create a Magic Movie project in iMovie on iPhone
When you create a Magic Movie project, iMovie automatically creates a professional-looking movie from your media.
In the iMovie app
on your iPhone, tap Start New Project, then tap Magic Movie.If you don’t see Start New Project, tap Projects to return to the Projects browser.
The albums and memories in the Photos app on your device appear in iMovie.
Do one of the following:
Choose media from the Recents or Videos album: Tap the Recents or Videos album, then tap the clips and photos you want to use.
Choose media from an album you created: Tap the album, then tap the clips and photos you want to use.
Tip: To use all the media in an album you created, tap the album, then tap Create Magic Movie in the center of the screen.
Tap Create Magic Movie at the bottom of the screen.