Locking audio to clip not in timeline?

The best way to do this is to select the video and audio clips in the browser and create a Synchronized Clip.

This will then be a single clip on the timeline with no problem keeping it together.

Alternatively, if you already manually synced them in the timeline, you could select both clips in the timeline and create a Compound Clip.

You synchronize clips in the BROWSER (not in the timeline)

You can treat a compound clip like any other clip. If you need extra material to be able to do transitions, make the compound a little longer in the first place and trim it in the timeline. Also if you need to you can go inside the compound clip to make adjustments too (Clip->Open Clip). Click the little back arrow above the timeline to return to the project.

You haven't laid out your project correctly. For music videos the audio is the bed. You lay the audio on the primary storyline. You then connect whatever clips you want, on as many layers as you want, to the audio on the primary. This clips don't move unless you move them.

Wait: you synchronized more than one clip with video and are trying to cut between them?

Maybe I should have realized that before, sorry.

What you want is to create a multicam clip.

In a multicam clip, you have angles, and switching/cutting between them is as easy as pressing the angle number.

Search for "MacBreak Studio multicam" on the web to find several episodes of the MacBreak Studio series where Steve Martin and Mark Spencer show this feature.

As a bonus, after you learned the basic, don't miss this "Final Cut Pro X under 5 minutes" video, titled "4K Multicam Magic":

https://www.youtube.com/watch?v=iio95lR_Hz8

Clips can only be connected to something on the primary storyline. You can also combine clips in a compound, which might help. Perhaps you could post a screenshot of the timeline to get an idea of what you’re doing.

The clips above are connected to the clip below. They're connected not locked. If you need to move the clips, you can just move them. If you want them to remain connected to that auto of audio, they are. You move the audio, the clips will go with them. If you want to lock those clips to point that timecode in the project, that's a different matter.

How did you dumb the clips?

could you post screenshots To explain what you’re trying to do? I really don’t think I understand what you’re trying to say in the first paragraph. There’s only magnetic functions in storylines, not with connected clips.

You still don't have the audio on the primary storyline, but leave that for now.

If you cut the clip the way you describe, yes it will drop down onto the layer above. It's connection point to the clip on the primary storyline is fixed. If you nudge clips around it will NOT change that connection point. The application will move the clip vertically out of the way if something wants to move between that clip and the primary. It will not be shuffled horizontally by other clips. .

A multicam clip is a clip, like any other. You can combine multicam clips with other clips in the timeline.

(In fact, though it usually sync clips to make a multicam clip, it does not even have to be about syncing anything)

You can have a 90 minute project and have a 1-minute multicam clip somewhere in it, for example (or several multicam clips).