Apple Motion 5.1.1 - Manual (Page 460)

Chapter 12 Keyframing 460
•
Before First Keyframe: Defines what happens between the first keyframe and the beginning
of the clip. See
Set curve extrapolation on page 478 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
Set curve extrapolation on page 478 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 lets you 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 Snapshot is turned on
(the camera button in the upper-right corner of the Keyframe Editor). For more information,
see
Curve snapshots on page 472.
•
Curve graph: Shows the keyframes and curves of active parameters (those in the parameters
list). Each curve is a different color, although some colors are duplicated. A time ruler shows
the locations of keyframes, project markers, playback In and Out points, and the playhead.
Zoom controls at the bottom of the graph let you focus on specific regions of the sequence.
For more information on using the zoom/scroll controls, see
Zoom in the Timeline on
page 256.
•
Audio Waveform pop-up menu: Turns on the display of audio waveforms for the selected item
in the background of the graph. This lets you line up an effect to take place at the same time
as an event that occurs in the audio. If there are multiple audio tracks in the project, you
can use this menu to view the waveform of any individual audio track in the project, or the
master track.
Audio Waveform pop-up menu
•
Clear Curve List button: Deletes all items in the parameter list from a custom set.
67% resize factor