I have not dealt with RED 5K files before and I'm having major issues of which I cannot find an answer on the net to. I have FCP X 10.0.8. My footage is Epic 5K. My timeline is 29.97 4800x2700. All of my talking heads are green screen. When I drag my keyer effect over on top of clips in timeline I get nothing. It will not key out. I am so frustrated. Will FCP not key 5K. Please help. Thank you.