Make animated GIF from a movie created in iMovie.app on Mac

Solution 1:

You can do it using the Keynote app which is preinstalled on every Mac:

1. Create a basic Keynote project
2. Remove all unnecessary text elements from the first slide
3. Drag and drop your video from the Finder into your first slide
4. If needed, edit Document's size to the required size of the final gif image
5. If needed, trim video in Format->Movie tab
6. Export Using File->Export to->Animated Gif

Here is the detailed instruction: https://macmost.com/create-an-animated-gif-from-video-on-a-mac.html

Solution 2:

I've used GIF Brewery 3 by Gfycat to create a GIF from a MOV file.

The previous link is to Mac App Store Preview, but it will also open it in the App Store. The following link is to the developer's web site: https://gfycat.com/gifbrewery

_{Note that I and not affiliated with the developer of the app, just an end user. Also at the time this answer was originally posted the app was free, however it is now currently $4.99 USD.}