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Table Of Contents
Interpolation: Sets the type of curve for the parameter. See Modifying Curves for
examples of the different interpolation methods. Choose Constant, Linear, Bezier,
Continuous, Exponential, or Logarithmic.
Before First Keyframe: Defines what happens between the first keyframe and the
beginning of the clip. See Extrapolation for examples of extrapolation methods. Choose
Constant, Linear, Ping Pong, Repeat, or Progressive. You can also turn the extrapolation
into keyframes by choosing Generate Keyframes.
After Last Keyframe: Defines what happens between the last keyframe and the end of
the clip. See Extrapolation for examples of extrapolation methods. Choose Constant,
Linear, Ping Pong, Repeat, or Progressive. You can also turn the extrapolation into
keyframes by choosing Generate Keyframes.
Lock/Unlock Parameter: Locks the parameter from changes. When a parameter is locked,
neither keyframes nor curves are adjustable.
Reduce Keyframes: Opens the Reduce Keyframes dialog, which allows you to apply a
thinning algorithm to the keyframes for the parameter. This reduces the number of
keyframes in a parameter while preserving the shape of the curve. The thinning
algorithm can be adjusted in two ways. Increasing the Maximum Error Tolerance results
in fewer keyframes. Increasing the Smoothing Factor makes smoother curves between
keyframe values.
Set to Curve Snapshot: Reverts keyframe changes made in the selected curve to the
most recent snapshot. This command is available when Take/Show Curve Snapshop is
turned on (the camera button in the upper-right corner of the Keyframe Editor). For
more information, see Curve Snapshots.
Keyframe Graph
The graph appears on the right side of the Keyframe Editor and displays the curves of
selected parameters. The graph has a time ruler at the top and a zoom/scroll control at
the bottom and side that are identical to the corresponding controls in the Timeline. The
time ruler shows where keyframes, project markers, playback In and Out points, and the
playhead are. Using the zoom controls at the bottom of the graph, you can focus on
regions of the sequence to edit. For more information on using the zoom/scroll controls,
see Zooming in the Timeline.
600 Chapter 12 Keyframes and Curves