Apple Final Cut Pro 5 - Manual (Page 878)

Chapter 6 Using the Audio Mixer 91
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Keyframe recording continues as long as the mouse button is held down, so it’s best to
mix groups of short, consecutive clips in a track all at once. For example, suppose you’ve
edited a dialogue sequence with multiple angles of coverage so that the dialogue spoken
by a single character is broken up into six different clips on tracks A1 and A2.
Since each clip has its own independent audio levels, to use the Audio Mixer to set the
levels for the entire group, you need to keep the mouse button held down continuously
to record mixer keyframes as you play back all five clips. If you stop halfway through clip
4, the level overlays for these clips look like this:
This is because no fader movement was detected in either clip 5 or 6, so the levels
were not adjusted for these clips. If this happens, it’s easy to move the playhead back
to the beginning of the section you’re working on and record any additional keyframes.
When you release the mouse button, keyframe recording ends and the fader for that
track goes back to displaying the previously set levels. The same rules apply to
recording pan information.
Important: If the Record Audio Keyframes button is not selected, no keyframes are
recorded when you move fader or panning sliders. However, you can still modify
keyframes and levels between any two keyframes.