One of the most popular editing techniques—both with editors and audiences—is the video overlay. (On the Internet, you may hear this technique called an insert edit, which actually has nothing to do with pasting video over audio.)
As shown in Figure 17-11, a video overlay is where the video cuts away to a new picture, but you continue to hear the audio from the original clip.
Suppose, for example, that you’ve got footage of an old man describing his first love. As he gets to the part where he describes meeting her, you want to cut to a closeup of her portrait on his mantelpiece.
Figure 17-11. When you overlay video over sound, you can illustrate what the speaker is saying without losing her train of voice.
In iMovie 4, it’s a piece of cake to paste a piece of video without disturbing the original audio track. You just have to check the status of a single checkbox in the iMovie → Preferences dialog box. Make sure “Extract audio in paste over” is selected.
If this checkbox is on, you’ll paste only the video, preserving whatever audio is already on your audio tracks. If the checkbox is off, you’ll wipe out both the audio and the video in the spot where you paste.
To perform the video overlay, follow these steps:
Select the footage you want to paste.
If it’s a complete clip, just highlight its icon ...