Shotcut is a completely free, open-source video editor. It runs on macOS 10.12 and newer. It is not as polished as iMovie, but it supports 4K and a wide range of codecs. Because it is open source, you can verify the code yourself, or download it directly from their official website ( shotcut.org ).
: When you double-click a DMG, macOS naturally runs a verification process. If it completes with "checksum is VALID," the file is not corrupted. Terminal Verification imovie 1033 dmg verified
Open Terminal and type: codesign -dv /path/to/your/iMovie.app If it returns “valid on disk” or mentions “TeamIdentifier: 2SNA4E7N... (Apple)” , the file has not been tampered with. If it returns “code object is not signed at all” — delete it. Shotcut is a completely free, open-source video editor