Expand audio components in Final Cut Pro for iPad
In Final Cut Pro, you can expand the audio component of a clip in the timeline to:
- Trim the clip’s audio independently of its video (to make the audio overlap the next video clip, for example) 
- Adjust the clip’s audio channels separately from one another (to adjust just one channel in a stereo recording, for example) 
Expand the audio component of a clip
- Go to the Final Cut Pro app  on your iPad. on your iPad.
- Open a project, then do one of the following: - Expand the audio component of a single clip: Touch and hold a clip in the timeline, then tap Expand Audio Components. (If a keyboard is connected or paired to your iPad, you can also press Control-S to expand an audio component.) 
- Expand the audio components of multiple selected clips: Select multiple clips in the timeline, touch and hold one of them, then tap Expand Audio Components. 
- Expand the audio components of all clips: Tap  in the top-right corner of the timeline, then tap Expand All Clips. in the top-right corner of the timeline, then tap Expand All Clips.
 
After you expand the audio component of a clip, you can trim the audio portion of a clip independently of the video portion and adjust individual audio channels in the clip.
Collapse an audio component
After you adjust an expanded audio component, you can collapse it again.
- Go to the Final Cut Pro app  on your iPad. on your iPad.
- Open a project, then do one of the following: - Collapse the audio component of a single clip: Touch and hold the clip (above the audio component) in the timeline, then tap Collapse Audio Components. (If a keyboard is connected or paired to your iPad, you can also press Control-S to collapse an audio component.) 
- Collapse all audio components: Tap  in the top-right corner of the timeline, then tap Collapse All Clips. in the top-right corner of the timeline, then tap Collapse All Clips.
 
If you trimmed the audio component of a clip, when you collapse it, the new duration of the audio component is shown as a thin bar below the clip.