Apple Final Cut Express HD: Getting Started - Manual (Page 76)

76 Chapter 5 Editing With Audio
Resyncing Clips
Even when linked selection is turned off, Final Cut Express HD keeps track of the
relationship between the audio and video items constituting a single clip. If you move
the audio or video item of a clip independently of the other items it’s linked to,
Final Cut Express HD keeps track of the resulting offset, displaying it as a timecode
duration in a small red box at the head of each clip. This box is called an out-of-sync
indicator.
A linked clip after
selection
A linked clip with
audio only selected
A linked clip with
audio out of sync
with the video
Out-of-sync indicator