This free video editing tool for iOS offers an impressive array of features in an easy-to-use format specifically designed for regular iOS users with no video editing experience. In addition to basic editing tasks like clipping, rotating, transitioning, and stabilizing, iMovie offers soundtrack options, pre-built themes and backgrounds, special effects, and even a function to create a movie trailer.
iMovie offers picture-in-picture and split-screen capabilities to create a newsroom atmosphere; greenscreen effects; creative video filters including silent-film-era, Old West, and comic book appearance; and simple sharing options, including social media. The app is functional on all iOS devices, including the iPhone.
Most importantly, iMovie can convert regular FPS video clips into slow-motion. Here is how to put a video in slow-motion with iMovie:
Open iMovie and choose Create a new project.
Choose the clip you want to edit.
Tap Create Movie.
A timeline of the video will appear at the bottom.
Tap on the timeline.
If you only want to make part of the clip slo-mo, you will need to add a split (if you want the entire clip in slo-mo, skip steps 8-13).
Scroll to the part of the clip where you want slo-mo to begin.
Tap the scissor icon at the bottom of the screen.
Scroll to the part of the clip where you want the slo-mo to end.
Tap Split again.
Tap on the clip you split off.
Choose the speedometer icon at the bottom left of the screen.
Drag to the left to slow the speed of the video.
Choose the speed you want to use, down to ⅛ of the original FPS.