Hi, supposing I have a moving object, say a car, in a 4K video. Can I use these software to change the color of the car to something else without people being able to detect the modification?
Yep. This is why I nowadays make nearly all of my YTPs in Final Cut Pro, along with any other elaborate video projects. I mostly reserve iMovie for simpler 16:9 video projects, like fursuit vlogs and such.