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AVCHD video from Canon C100 stuttering in FCPX 10.4

I'm having the same issue with importing AVCHD video from a Canon C100, and it started after I upgraded to FCPX 10.4. Apple needs to look into this ASAP! Periodically the video will stutter on playback, audio is fine. I've tried transcoding the media to Prores 422, but the stuttering is still there. It only happens from the AVCHD files created on the C100.


FCPX 10.4 on a Mac Pro (Late 2013)

macOS High Sierra v. 10.13 (17A405)

3 GHz 8-Core Intel Xeon E5

32 GB 1866 MHz DDR3

AMD FirePro D700 6 GB

Posted on Mar 2, 2018 2:15 PM

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Posted on Mar 27, 2018 5:34 PM

Welcome to the club, everyone!


Re: FCP X 10.4 still glitchy with Sierra and High Sierra 10.13.2


This happens only in 10.4, and only with AVCHD files. The OS has nothing to do with it. If you still have 10.3, you're in business. The problem does not happen within FCPX 10.3. There is no fix at this time in 10.4, not that I nor a lot of other pro's know of. Fortunately, I still had 10.3 installed on one of my machines so I'm still able to import AVCHD.


It's been over three months and Apple has not acknowledged this problem. I truly hope they're working on a fix. I can only imagine how difficult this has made many professional's workflow.


Please submit a report to Apple. The more they hear about it, the better the chance this will be addressed.


Feedback - Final Cut Pro - Apple

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AVCHD video from Canon C100 stuttering in FCPX 10.4

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