Adobe After Effects CS3 Bedienungsanleitung Seite 224

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Seitenansicht 223
AFTER EFFECTS CS3
User Guide
219
If you time-stretch a layer so that the resulting frame rate is significantly different from the original frame rate, the
quality of motion within the layer may suffer. For best results when time-remapping a layer, use the Timewarp effect.
See also
Apply frame blending to a layer” on page 225
“Timewarp effect” on page 535
Time-stretch a layer from a specific time
1
In the Timeline or Composition panel, select the layer.
2 Choose Layer > Time > Time Stretch.
3 Type a new duration for the layer, or type a Stretch Factor.
4 To specify the point in time from which the layer will be time-stretched, click one of the Hold In Place options,
and then click OK.
Layer In-point Holds the layer’s current starting time, and time-stretches the layer by moving the Out point.
Current Frame Holds the layer at the position of the current-time indicator (also the frame displayed in the Compo-
sition panel), and time-stretches the layer by moving the In and Out points.
Layer Out-point Holds the layer’s current ending time and time-stretches the layer by moving the In point.
Time-stretch a layer to a specific time
1
In the Timeline panel, move the current-time indicator to the frame where you want the layer to begin or end.
2 Display the In and Out columns by choosing Columns > In and Columns > Out from the Timeline panel menu.
3 Do one of the following:
To stretch the In point to the current time, press Ctrl (Windows) or Command (Mac OS) as you click the In time
for the layer in the In column.
To stretch the Out point to the current time, press Ctrl (Windows) or Command (Mac OS) as you click the Out
time for the layer in the Out column.
Time-stretch a layer but not its keyframes
When you time-stretch a layer, the positions of its keyframes stretch with it by default. You can circumvent this
behavior by cutting and pasting keyframes.
1 Make a note of the time at which the first keyframe appears.
2 In the Timeline panel, click the name of one or more layer properties containing the keyframes you want to keep
at the same times.
3 Choose Edit > Cut.
4 Move or stretch the layer to its new In and Out points.
5 Move the current-time indicator to the time at which the first keyframe appeared before you cut the keyframes.
6 Choose Edit > Paste.
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