You can use images as video overlays for iMovie on your iPhone or iPad in the same way you do it for Mac. The Keynote app for iOS is a great way to create these images, which must have transparent backgrounds. Switching between Keynote and iMovie you can add text, shapes, lines or almost any sort of overlay image easily.
Want to know more about how to use Keynote on your Mac? Check out this MacMost course!
Want to know more about how to use iMovie on your Mac? Check out this MacMost course!
I tried to follow the instructions. I don't see the option for "transparent backgrounds" in either IOS or Mac Keynote. Am I missing something?
John: Did you set the backgrounds for the slides to No Fill?