After much troubleshooting, I was successfully able to export my 30 minute film short from Davinci! I used MPEEG4 4k DCI dimensions (4096x2160) from my RED footage, which is the correct dimension I believe. For some reason, I'm getting black borders on the top and sides of my image. It shows the black borders no matter what video player I used. I attached a screenshot to show. Am I doing something wrong? I hate the borders like that and obviously want it to be fullscreen.