When using quicktime screen recorder, the recording changes colors

Please help me out!! So I've had my macbook air for a while now and I've used the quicktime screen recorder multipul times, but latley something changed. When I go to record my screen everything works fine, and once its finished and I've saved it it's still normal. But once I go to import it into imovie the entire recording turns red, I can still see the recording but everything is just red! Everywhere else the recording looks fine, but its only when I try to put it into imovie that it changes colors. Its never done this before and all of my past screen recordings work fine.

Does anyone know what I can do to fix it?

Any advice would be greatly appreciated!

Thank you 🙂