<p>I don’t think you doing something wrong.</p>
<p>My suggestion is copy the sequence to a complete new and fresh library. This should load the clips again and hopefully get rid off any possible problems in the library.</p>

CC BY-SA 4.0
2021-04-02T00:07:07.157Z
2021-04-02T00:07:07.157Z
German Dude
<p>I have a project in Final Cut Pro X, that plays as I expect in the Final Cut, but when I export in to h264 there is a part where audio is playing slightly in before the video.</p>
<p>Such part is present on the following screenshot:
<a href="https://i.sstatic.net/2KBgh.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/2KBgh.png" alt="enter image description here" /></a></p>
<p>At the beginning the audio is in sync. Then there is a 100x speedup, and then audio get's out of sync (I'm talking about the clips audio, not the green music). Ironically there is also a connected clip that appears slightly later, and it also has a 100x speed increase later on but that does not cause any problems. Also both clips' audio plays separately in the left and right channels, so in headphones I can hear that in FCPX some audio bits happen at the same time, while in the exported file they are out of sync…</p>
<p>Am I doing something wrong?</p>

<final-cut-pro-x><sync><export>
Some parts have audio out of sync after a master export
Uko
# Some parts have audio out of sync after a master export

(Asked by: username_0 on 2021-04-01)

I have a project in Final Cut Pro X, that plays as I expect in the Final Cut, but when I export in to h264 there is a part where audio is playing slightly in before the video.

Such part is present on the following screenshot:
[![enter image description here](https://i.sstatic.net/2KBgh.png)](https://i.sstatic.net/2KBgh.png)

At the beginning the audio is in sync. Then there is a 100x speedup, and then audio get's out of sync (I'm talking about the clips audio, not the green music). Ironically there is also a connected clip that appears slightly later, and it also has a 100x speed increase later on but that does not cause any problems. Also both clips' audio plays separately in the left and right channels, so in headphones I can hear that in FCPX some audio bits happen at the same time, while in the exported file they are out of sync…

Am I doing something wrong?

**Tags:** final-cut-pro-x, sync, export


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## 1 answers

### Answer by username_1 on 2021-04-02. Score: 0

I don’t think you doing something wrong.

My suggestion is copy the sequence to a complete new and fresh library. This should load the clips again and hopefully get rid off any possible problems in the library.


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