Movie file imported can't be opened

It looks like the import is not completing. That could be caused by disconnecting or shutting off the camera before the import completes. Other causes could be incompatible video format, corruption of the video file, malfunction of the camera, or a glitch in iMovie.

To rule out an issue with an iMovie preference, delete preferences by opening iMovie while holding down the Option and Command keys and selecting to delete preferences in the box that appears. iMovie will open in a new blank library. Reopen your old library to get back to your projects. Now see if you can import.

If deleting preferences doesn't cure the issue, try importing in a different way to rule out the other possible causes of the problem. Try using the Image Capture app on your Mac to import to your desktop rather than directly into iMovie. Or, you can try importing into the QuickTimePlayer app on your Mac.

-- Rich

You need to be using a fire wire cable with the necessary adapters to get from your camera to whatever Thunderbolt socket that your Mac has, if it has no fire wire socket.

-- Rich

I'm running Ventura, the operating system that is newer than yours. QuickTimePlayer is located in my Applictions folder. It should be located in your Applications folder as well.

-- Rich