can't download video from my iPhone 13 pro to my iMac hard drive

Hello bhirschbein,

Welcome to the Apple Support Communities. From your post, you want to move videos from iCloud to the hard drive of your iMac. We'll do what we can to help.

If you want to use the iCloud website, you can do so from the steps here under "How to download photos and videos from iCloud.com": Download iCloud photos and videos

If you continue to have issues, you can also try using the Photos app itself. In the same link, the steps are under "How to download photos and videos from the Photos app"

Take care for now.