3. Trimming Audio While Staying in Sync
In this exercise, you'll learn how to trim audio separately from video, while still keeping everything in sync.
| 1. | If it isn't already, open the project Hurricane, and double-click Seq B-roll added to load it into the Timeline.[View full size image] | | 2. | Position the playhead so it is at the start of the B-roll. Then, zoom in so that the first clip (also called the A-roll clip) and the two B-roll clips fill the Timeline. (A quick way to have a selection fill the Timeline window is to select what you want to zoom in on, then press Shift+Option+Z.) Be sure you can see all six tracks. | | 3. | Play the beginning of the sequence. Hear how the audio level and energy drop after the first B-roll clip?What you are going to do in this exercise is remove the audio from the second B-roll clip, and extend the audio from the first clip to cover both B-roll clips. | | 4. | Go to the upper-right corner of the Timeline and click the Link button to deselect it (gray). | | 5. | Now, grab the video from the first B-roll clip and drag it to the left a few frames. (You may want to turn off snapping before trying to move the clip.) See those red flags? It means you've just moved the video of this clip out of sync!
NOTE | A Rant on the Link Button
This Link button drives me absolutely nuts! Why would anyone put a button on the Timeline that, when you use it, almost assuredly allows you to get your clips out of sync?!?I grant that, in certain instances, being able to control linking is necessary. But it is not necessary on the Timeline as a button. This thing is bad and needs to be destroyed!First, click the button to turn it back on (green). Then, grab the Link button from the Timeline button bar, drag it out and let go. Poof! It's gone and good riddance. If you really need to mess with linking, you can select it in the Modify menu.But this button is just stupid!Chapter 2, "Understanding the Final Cut Pro Interface." But I really wish you wouldn't.) |
 | | 6. | There's an extra-secret way of moving one side (meaning the video side or the audio side) of a linked clip without getting everything out of sync. But, first, you need to get your video clip back in sync. However, because linking is on, whenever you click one side of a clip, the whole clip gets selected.So, deselect everything. Then, hold down the Option key and click the out-of-sync video clip to select it. Then, with just the video clip selected, Ctrl+click the red sync flag and choose Move Into Sync from the shortcut menu. (Be sure to click only the red flag, not the edit point or elsewhere in the clip.)The Option key is the secret. You can use it to get rid of one side of a linked clip, or trim just a video In, or change an audio Out. Whenever you need to work with just one side of a clip, the Option key makes it possible. Like now. | | 7. | Hold down the Option key and click once to select the audio for the second B-roll clip. | | 8. | Delete the selected audio and leave a gap. | | 9. | Next, hold down the Option key and select the audio Out of the first B-roll clip.  | | 10. | Now, while still holding down the Option key, drag the Out all the way to the right to fill the gap. | | 11. | Play the first part of the sequence.Hear how the B-roll audio carries the energy and excitement of the first B-roll clip through the second B-roll clip?  | | 12. | This is such an incredibly important technique that I want you to discover one more way you can use this. As additional practice, Option+click the video In of the first B-roll clip. Drag it to the right.See how you can move the edit point of a clip, yet the audio and video elements of the clip stay in sync? Using the Option key to drag an edit point or select one side of a clip is far, FAR better than using the Link button.
NOTE | Split Edits
Split edits are where the video and the audio edit occur at different times. There are two types of split edits: an L-edit and a J-edit.[View full size image] An L-edit is one where the audio edit occurs later than the video edit. It's called an L-edit because the shape of the end of the outgoing clip looks like the letter L.The easiest way to create an L-edit is to Option+click the audio (or video) edit point with the Roll tool, then Option+drag the edit point with the Roll tool to where you want it to go. A J-edit is one where the audio edit occurs earlier than the video edit. It's called a J-edit because the shape of the end of the outgoing clip looks like the letter J.The easiest way to create a J-edit is to Option+click the audio (or video) edit point with the Roll tool, then Option+drag the edit point with the Roll tool to where you want it to go. In fact, the process of creating a J-edit is identical to creating an L-edit. The only difference is the direction you drag the edit point.Split edits are used constantly, whenever you want to see one thing and hear another. |
| | 13. | That ends this exercise. Save your work, but keep everything handy. You're going to use this same exercise again.
NOTE | When Should You Use the Link Command?
I don't like the Link button, because it gets too many people into trouble. But the Link command (Cmd+L) is very usefulin certain situations.As you've probably surmised, I don't recommend unlinking a clip when you can use the Option key instead.However, a good use of the Link command is when you have two different clips, and you want to connect them; for instance, a video-only clip and an audio-only sound effect.Linking them together tells Final Cut that it should treat these two clips as being "in sync." That way, whenever you move one side of the clipthe video, for examplethe sound effect follows.To link a clip, align the two clips so that the sound and video play together with the right timing. Then, select both clips and choose Modify > Link. Both clip names become underlined and for the rest of that Timeline, they move together.There's also a reason to unlink a clip. Say you want to use the audio from a clip several times in a sequence. (For example, it could be traffic noise you want to use as background.) Unlinking the audio from the video makes it easy to move the audio around as its own separate clip; because you never want to use the video, maintaining sync is irrelevant. |
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