4k video will not render on timeline
early 2011 MBP
MacOS 10.13.6 High Sierra
FCPX 10.4.6
Hello,
I have used fcp often to edit 1080p video. The rendered clips (Prores 422 LT) run flawlessly on my older computer. I would now like to edit some 4k video. I've created a 4k project file, but when I import 4k video to the timeline, no white dots appear above the video to indicate the clip is being rendered. If I make any change to the clip (color correction, frame size, transform, opacity.... anything) the white dots appear and the clip gets rendered to Prores 422 LT. If I import 1080p clips to the same timeline, the white dots appear and the clip gets rendered.
Any idea what may be causing this? How can I troubleshoot this and find a solution?
Shawn's 13" MacBook Pro