iMovie is not working after updating to iOS 13

Hey Soraya1963,

Welcome to the Apple Support Communities! It's never fun when you're trying to use an app and it doesn't function how you want. I'd be glad to see what I can do to assist you with getting iMovie working more how you expect. 

You mentioned that the video comes up black when attempting to play a project. Does this occur in all projects or just ones that you have from before updating? If you create a new one as a test, does it display the same behavior? 

Create a new iMovie project 

Let's also make sure that all of your apps are updated as well since you mentioned just updating to iOS 13. App updates could be very beneficial here, so follow the steps in Update apps or use automatic downloads to ensure that this has been completed. 

Cheers!

Welcome back Soraya1963,

It's great to hear that updating was the solution. If you run into any other issues, Apple Support Communities will be available for assistance.

Have a great rest of your day!