Export Failing - Request CVPixelBufferForFrame
This error appears while trying to export a timeline from FCPX (and the export fails). See the photo for more details. Exporting to a Quicktime 1080p file via H.264.
The first attempt gave me an error at frame 13,309.
So I went to that frame, double checked that nothing weird was happening, then I range-selected the surrounding ~700 frames - including #13,309 - and exported just that 30 second chunk of timeline to Compressor. It exported successfully (that’s the successful attempt you see in the photo, in the middle).
”Hmm. So there wasn’t an issue there,” I thought to myself. But I wanted to make sure, so I tried the whole thing again (not shown in the screenshot), and it failed with the same error at Frame #13,309.
So I took the entire timeline, CMD+A, then OPT+G and put all of it into a compound clip. Tried to export again, and then it returned an error at Frame #7,584 (the latest attempt in the above image).
Neither of the above locations in my timeline had anything odd, and frame 7,584 of the timeline is literally just a single video clip with audio: No compositing or transitions or effects (besides color adjustments).
So something odd is happening here. These video files are 4:2:2 10-bit clips shot in my A7Siii, all working locally on my Macbook’s internal SDD storage.
MacBook Pro 16″, macOS 14.0