So, you just shot something awesome, but you recorded your video and your audio on different devices. You’re going to need to sync those up!
If you want to do it manually, you’ll be old and gray by the time those tracks match perfectly. Luckily Final Cut Pro X (FCPX) makes it super simple to sync audio.
Here’s how to do it.
How to sync your audio in Final Cut Pro
In the FCPX browser, select all the audio and video clips you want to sync.
In the menu bar, choose Clip > Synchronize clips. A window will pop up and this is where you set up the sync.
Type in a name for your newly-synced clip, check the box for Use audio for synchronization. Pro-tip: If you want to remove your reference audio from the video track, just check the box to Disable audio components on AV clips.
Click OK. Now sit back and let the FCPX perform actual miracles!
Once it’s done syncing, Final Cut Pro will generate a synced clip with the name you specified earlier. Simply click and drag the newly created clip into your timeline and you’re done!