QuickTime 7 Pro is a legacy application that is no longer supported or sold by Apple. While you might see "full version download" or "registration key" offers online, these are often associated with outdated or unsecure software distributions. Current Status of QuickTime 7 Pro
QuickTime Player 7 is incompatible with any macOS version released after macOS Mojave . Modern versions of macOS use QuickTime Player 10, which includes many former "Pro" features for free. QuickTime-7-Pro-Registration-Keys-Full-Version-Download
Ability to create H.264 video, cut/copy/paste editing, and save movies from the web (where allowed). QuickTime 7 Pro is a legacy application that
Apple discontinued support for the Windows version in 2016 due to critical security vulnerabilities that will never be patched. Modern versions of macOS use QuickTime Player 10,
Are you trying to or just looking for a free video editor ? Download QuickTime 7.7.9 for Windows - Apple Support