Apple Final Cut Pro 5 - Manual (Page 880)

Chapter 6 Using the Audio Mixer 93
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5 Hold down the mouse button to continue recording mixer automation, and move the
fader or panning slider to adjust the clip’s audio or pan levels in real time while
playback continues.
6 When you’ve finished, release the mouse button to stop recording keyframes.
The sequence continues to play, and the fader and pan controls return to the
previously set levels.
7 If there are any other Audio Mixer controls you want to adjust at this time, repeat steps
4 through 6.
8 When you’ve finished making adjustments, stop playback.
Once you finish recording automation for a track, you can move the playhead back to
the beginning to record keyframes for additional tracks. This way, you can create your
audio mix one track at a time, adding keyframes for each track until you’ve set levels for
all the clips in your sequence. Ultimately, it doesn’t matter whether you use the Audio
Mixer in real time or set levels directly in the Timeline or Viewer. You can choose
whatever method works for a particular track or clip.
Note: You can also make changes to levels in tracks you’ve already mixed. New
changes made to the fader and pan controls overwrite previously set levels.