Adobe After Effects CS3 - Manual (Page 229)

AFTER EFFECTS CS3
User Guide
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• To freeze the previous keyframe, drag the current keyframe marker to a value equal to the previous keyframe value
so that the graph line is flat. Another method is to select the keyframe and choose Animation > Toggle Hold
Keyframe, and then add another keyframe where you want the motion to start again.
Before you move a time-remap keyframe, it’s a good idea to select all subsequent time-remap keyframes in the layer
first. This will preserve the timing of the rest of the layer when you remap time for the current keyframe.
Remap time in a Layer panel
1 Open the Layer panel for the layer you want to remap.
2 Choose Layer > Time > Enable Time Remapping. A second time ruler appears in the Layer panel above the default
time ruler and the navigator bar.
3 On the lower time ruler, move the current-time indicator to the first frame where you want the change to occur.
4 On the upper time ruler, the remap-time marker indicates the frame currently mapped to the time indicated on
the lower time ruler. To display a different frame at the time indicated on the lower time ruler, move the remap-time
marker accordingly.
Drag the remap-time marker to replace the frame at the current time marker.
5 Move the current-time indicator on the lower time ruler to the last frame where you want change to occur.
6 Move the remap-time marker on the upper time ruler to the frame you want to display at the time indicated on
the lower time ruler:
• To move the preceding portion of the layer forward, set the remap-time marker to a later time than the current-
time indicator.
• To move the preceding portion of the layer backward, set the remap-time marker to an earlier time than the
current-time indicator.
• To freeze a frame, set the remap-time marker to the frame you want frozen. Then, move the current-time indicator
(lower ruler) to the last point in time where the frame will appear frozen and move the remap-time marker again
to the frame you want frozen.
Time-remap audio pitch
The speed graph of the Time Remap property directly relates to the pitch of an audio file. By making subtle changes
to the speed graph, you can create a variety of interesting effects. To avoid screeching audio, you may want to keep
the Speed value below 200%. When the speed is too high, use the Levels controls, located under the Audio property,
to control the volume.
You may hear clicks at the beginning and end of an audio (or an audio and video) layer after setting new In and Out
points in the Time Remap graph. Use the Levels controls to remove these clicks.