Apple Final Cut Express HD User Manual
Page 125
Chapter 9
Timeline Basics
125
II
Track Display
 Show Keyframe Overlays: Select this option to display opacity overlays (thin black lines)
over your video tracks, and audio level overlays (thin red lines) over any clips in the
audio tracks of the Timeline. These lines indicate video transparency or audio levels. For
more information, see “
Adjusting Parameters for Keyframed Effects
You can also use the Clip Overlays control in the Timeline to show or hide overlays.
 Show Audio Waveforms: Select this option to display audio waveforms superimposed
over audio clips in the Timeline. You can also toggle audio waveforms by pressing
Option-Command-W. This option is also available in the Track Layout pop-up menu
in the Timeline.
Audio waveform
Without audio
waveform