Good idea for a project. I’m not sure if it’ll help but Blackmagic has a couple of free tools that might come in handy. The first is Davinci Resolve, which is excellent for color correction. The second is Fusion, which according to the manual, has some frame repair and cloning tools. I’ve never used Fusion, so I can’t vouch for how good they are, but both programs are Mac/Windows compatible. They’re both pro tools, so they’re not exactly easy to learn, but they might be worth a look.
Best of luck! 😃