Clips that contain both video and audio appear as a single item in Project Panel. When this clip is added to sequence in Timeline Panel, video and audio appear each in its appropriate track. Dragging video portion in Timeline panel, linked audio moves with it, and vice versa. So audio and video pair is called a linked clip.
Linking video and audio clips means that they become locked together and act as one. To link clip
- Add video and audio clips on Timeline.
- Select video track and audio track to link. To select multiple track, hold down Shift (Command) key and click
- To link selected audio and video track, do one of the following:
- Go to Clip > Link
- Right (Control) click, and then choose Link from the context menu.
- Audio and Video tracks are now linked.
Linking is useful when compositing several video and audio tracks. Accidentally altering one track can undo the whole work, linking all the clips together will prevent it. To edit tracks of linked clips individually
- Hold Alt (Option) key and click either part of a linked clip to select it.
- Use any editing tool to edit the selected track.
Below figure shows an example of moving a audio track of linked clip. Dragging audio track, makes audio and video track out of sync.
Commonly workflow act on both parts of a linked clip. To work with the audio and video individually i.e. Unlink them
- Add linked clips on Timeline.
- Select the clip to unlink
- To unlink audio and video track, do one of the following:
- Go to Clip > Unlink
- Right (Control) click, and then choose Unlink from the context menu.
- Audio and Video tracks are now unlinked
Unlinking clip make audio and video as separate clip. Previously unlinked clips can be linked again.