Clips coming over as black on timeline

[Michael Angelo]

We are delivering for SXSW and having the same problem, errant black clips in the timeline. This happened after moving to work on a laptop OS X 10.10.5 from a late 2013 Mac Pro OS X 10.11 (working remotely due to long standing power outage on delivery week, yay). This is with transcoded clips, multi cams and titles generated in FCPX.

In some cases the head of a multicam clip is black in a primary storyline, in other cases the titles and/or clips in secondary story line are playing black when play head goes over them. To add to the secondary storyline weirdness, we have two Video subroles (see attached, problem clips in yellow) “Archival Footage” and “Video Other” and when viewing only one sub role at a time, the clips in secondary storyline or clip under can be seen in timeline when playhead is over them.

What’s also so strange is clips in event viewer are fine and that playing optimized in timeline the black clips and multicams can be seen. Over cutting from the event has help in some cases but not always and it’s a lot of work to redo. We’ve trashed preferences, restarted FCPX, restated the machine, any other ideas?

Many thanks in advance

MA

Harvest the compromises…

[Jeremy Garchow]

The dupe roles aren’t really dupes.

You just have one Role that is “Video” and a subrole of Video that is “Video > Archival”. The main “Video” role shows up as “Other Video” in this case.

As fas as the black frames, I would suggest trashing the entire FCPX cache (not the prefs, but the cache). The cache contains thumbnails and render files.

Quit FCPX, trash the cache, and then Open FCPX to rebuild the thumbnails and waveforms.

[Michael Angelo]

Great idea thank you!

Harvest the compromises…

[Michael Angelo]

So heads up in case this is helpful to anyone. I was a little less aggressive and broke out the timeline in question into it’s own event, then chose “file/delete generated render files” hoping to avoid re-rendering every file for the entire library (which is huge), no change. So I quit and relaunched after doing this, everything was back to normal and it’s re-rendering the files.

Thanks Jeremy!

Harvest the compromises…

[João wilson Zequim]

There is another way.
Open packaged content, event folder->Transcoded Media->High Quality Media, search file with the same name of clip with problem, rename it.
Work for me 😀

[Bobby Hall]

This is a pretty old thread but I had the same problem and “fixed” it. I noticed from the screenshot of the original poster’s timeline that the problem clip that became black had text over it. I had the same problem. I just moved my text over one frame and it started to work again. I have no idea what caused the problem in the first place or why this “solution” works, but I thought I’d let people know about it in case they needed a quick fix.