Apple Motion 2 - Manual (Page 279)

Chapter 4 Using the Timeline 279
Audio-Video Links
Ordinarily, objects that contain both audio and video are linked together so that they
always remain in sync. This link is represented by an icon in the Timeline Layer list.
Objects that are linked are always edited together in the Timeline. Operations such as
cut, copy, paste, and split also affect both audio and video. However, if you ever want to
break that relationship so that you can move or edit the audio or video without the
other tagging along, you can disable that link and move either object freely. Beware
that this may result in your audio and video playing out of sync.
To manipulate audio and video elements separately:
1 Click the link icon to the right of the object name for either the video or audio element.
2 Move, trim, or slip the audio or video bar.
The link icon also appears in the Layers list in the Project pane.
Timeline View Options
The lower-left corner of the Timeline contains several controls to customize what
elements appear in the Timeline.
Audio tracks are displayed in a separate partition in the Timeline. You can resize the
partitions by dragging the divider bar for each partition.
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