Gap in exported file

[Mads Nybo jørgensen]

Hey David,

Several reasons for why that could happen, although it shouldn’t.

Have you tried to move the time-line into a new project?

I would also check drive space + if the footage is on a separate drive/card, that might be doing its own thing.

Last and most annoying idea, is to render out in smaller chunks and see if you get everything, before stitching them back together.
Certainly faster than having to start a 1-hour render from scratch.

As always, there are smarter people around here who will know better.

Atb
Mads

[Doug Metz]

Hi David,

“My project is about an hour long. I am exporting an .mp4 file (H.264 Multi-pass). On each attempted export, a different gap is missing: about 2 minutes with no audio/video, just black.
I am stumped.
The .mov export is fine. I also tried exporting the .mp4 from the .mov instead of the project – same result.”

This is definitely odd. A few questions for you:

• What settings were you using for your .mov export?
• How did you export the .mp4 from the .mov file?
• If you were to compare your various .mp4 exports, do the gaps correlate to any particular piece of media on your timeline?

You could also try to export H.264 Single pass from the timeline, or take your good .mov file and drop it into Compressor (or Handbrake, ffmpeg, etc.)

[Ben Balser]

First thing I’d have done, turn off background rendering, then delete all render files.

Second thing, delete pref files, relaunch FCPX and try again.

Random gaps like that, could very well be corrupted render files, so delete them all.

Then if that doesn’t do it, as said already, copy all, paste to a new Project timeline.