Hi,
I am having the same problem, I have some footage from a Phantom 4 that I need to render with a 00:00:01:00 fade at the end.
Details:
Footage length: 00:04:56:07
Resolution& Codec: 3840 x 2160 H.264 .MOV
Scratch Disk: 2TB External Harddrive (300GB+ Free)
Apple Mac Mini 10.10.3 (2011)
Processor 2.5 GHz Intel Core i5
RAM 16 GB 1600 MHz DDR3
Graphics AMD Radeon HD 6630M 256 MB
Any Help would be appreciated, thank you.