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Audio out of sync exporting in Final Cut Pro X

The project in FCPX is in sync, and the exported file too if I play it with VLC. But when I play it with quick time player or when I upload to vimeo is out of sync.

The frame rate of the video is 25 fps, HD, and the audio is .wav exported from logic, at 48 Hz. I've read similar post where they solved the problem exporting with Compressor changing the fps rate. I've tried some changes of the encoders in Compressor but anything seems to work. It's like the video is always late compared to the audio.

Appreciate your help.

MacBook Pro 14″, macOS 14.1

Posted on Dec 13, 2023 5:14 PM

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4 replies

Dec 14, 2023 9:37 AM in response to Raulpatino

Does the audio drift further out of sync later in the exported video file or is it out of sync by the same amount at the beginning and at the end? If it drifts, I'd double-check sample rate used in Logic Pro and the project settings in FCP. You can use Invisor or similar to inspect the audio file from Logic and the output from FCP.

Dec 14, 2023 5:15 AM in response to Meg The Dog

First of all, thank you very much. I've imported the file again to FCPX and it doesn't play in sync then. I'm monitoring with airpods, with cable headphones or with the speakers of the macbook pro, and the 3 devices give the same result.


I've not seen this problem before, but now I'm cheking previous videos I made, and I see little lag in some of them, but this last one in particular is worse, I can't publish something like that.


Thank you again for your advice, I hope there will be a solution.


Raúl

Dec 14, 2023 1:55 PM in response to terryb

It's out of sync the same amount of time everywhere, but wait...

Today I reopened the project and then it was out of sync on the timeline of FCPX!!! I don't understand anything. Then I put all together in sync moving the audio and it worked perfect when exporting the project. 🤷‍♂️

Maybe was something related with the bluetooth headphones, but I was listening with them also in VLC where it was in sync.

Anyway, I've solved the problem but have no idea what went wrong.

Thank you very much with all that help!


Raúl

Audio out of sync exporting in Final Cut Pro X

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