If you want to uninstall and reinstall iMovie on your mac, then you need to take a backup of iMovie events and projects before uninstalling the iMovie. You can easily create an iMovie backup, because it uses a type of database in the current version where all necessary events and projects are backed up.
To backup iMovie events and projects, go to "Finder" menu bar located at the top and then click "My Folder". Here you will see a "Movies" folder. When you open this folder, you will see 2 folders i.e "iMovie Events" and "iMovie Projects". You can draw with the "Alt" key on another hard drive or to another folder wherever you want. Using the "Alt" key you can you can just copy the folders, you can not move them.
Automate backup & migration of your photos & videos with support for all top services.
Trusted by users in 125+ countries.
“Your pictures are scattered. PicBackMan helps you bring order to your digital memories.”