my iMovie keeps quitting when I want to import a video file
whenever I try to import a video into iMovie in my Catalina
it instantly quits
Question marked as
Top-ranking reply
This may not cure it but it's something you should always try. . . .
If iMovie starts behaving unexpectedly in any way for no apparent reason, the problem could be caused by corrupt preference files.
The cure for this is to delete the preferences.
Hold down the Cmd and Option keys as you launch iMovie and this window will appear.
Click “Delete Preferences” and iMovie will open in the default (as-new) mode with no projects etc. on the interface.
You will have to navigate to any project you were working on and reopen it. Your project libraries by default are stored in your Movies folder unless you have specified somewhere different.