Why do MXF clips become shorter when I import them to Final Cut Pro

James, your answer has saved my sanity. I reckon I have spent between 50 and 100 hours trying to work out why my clips wouldn't play and hours upon hours on the phone to apple support. As it happened this occurred the same time as I archived a heap of projects but the two events were un-related. If I hadn't stumbled on your post I would have had an archived mess of about 5 TB of work. In the end, it was the simplest of solutions and discovered just before I was about to take to my hard drives and FCPX with a sledgehammer. Thank you!!

Is the truncation consistent? Exactly the same number of frames or seconds on every clip?

if you have the demo of the Calibrated plug-in, your clips will appear to only be 30 seconds long. quit fcpx, go to /Library/QuickTime on your mac, delete any Calibrated files, restart the computer, and reimport the mxf clips into fcpx

Who, Calibrated? That's almost random. Never heard of it. That's why I read these things, though, learn something new every day.

Calibrated is a third-party mxf plugin people used to use before fcpx supported it natively. if you have the demo of the plugin installed, it conflicts with fcpx, and mxf imports only appear to be 30 seconds. on their website, they say this:

DEMO MODE LIMITATION

Without a Software License,Calibrated{Q} MXF Import will run in DEMO MODE where only up to 30 seconds of the media will be shown or half the media if media is already less than 30 seconds.

Thanks, James, hope you solve the OP's problem.

hi, after you remove the plugin, make sure you have pro video formats installed:

https://support.apple.com/kb/DL1396

then, reimport the mxf files, and you should see them at the correct duration

Thanks so much. Very Helpful.

Dear Mr. Cude, thanks so much for posting this.You've saved me a whole heap of pain. Appreciate it.