Select the keys that make up the animation. You can include several properties or layers. The selection rules also let you work within the work area without selecting individual keys.
Place an animation at the playhead
Move the playhead to the intended start and click To playhead. The earliest targeted key lands there. All other targeted keys move by the same amount.
To make an animation finish at a particular time, put the playhead there and Alt-click To playhead. This aligns the latest key instead. On macOS, use Option for Alt.
Use −1f and +1f to adjust the placement one composition frame at a time. Hold Shift for ten frames. The button labels change to −10f and +10f while Shift is held.
If the aligned key is already at the playhead, Keymaster reports Keys already sit on the playhead.
Copy an animation
- Select the source keys.
- Move the playhead to the new start.
- Click Clone.
The first copy lands at the playhead. Originals stay in place, and the copies become selected. Copies keep values, interpolation, temporal easing, spatial tangents and key labels where After Effects supports them.
Move the playhead away from the first source key before cloning. Otherwise, Keymaster reports Move the playhead off the first key to clone. Check for keys at the destination before copying into existing animation.
Reverse an animation
Click Reverse to mirror key times within the group’s earliest and latest times. A key at the beginning moves to the end, carrying its value. Incoming and outgoing interpolation, easing and spatial tangents swap sides.
For example, two Opacity keys at 0 and 1 second with values 0 and 100 become 100 and 0 at those same times. An ease into an endpoint becomes an ease out at the opposite endpoint.
Reverse needs keys at two times means the targeted keys all share one time. Include another key at a different time.
Make an animation slower or faster
Click More, or right-click the main Stretch tile, to type an exact percentage. Press Enter in the percentage field to run it, or click the drawer's Stretch button.
Above 100% makes the timing longer. Below 100% makes it shorter. 100% leaves it unchanged.
Stretch uses the earliest targeted key as its pivot. At 200%, keys at 1, 2 and 3 seconds become keys at 1, 3 and 5 seconds. Values stay the same, and temporal ease speeds scale to the new duration. Times are scaled directly, so the result can include keys between composition frames.
Alt-click Stretch, or hold Alt when releasing a drag, to use the playhead as the pivot. Keys on either side move toward or away from it.
For a quick adjustment, drag the main Stretch tile horizontally. Right increases the percentage; left decreases it. The readout changes during the drag. Releasing applies the displayed percentage and saves it for the next click. The composition changes on release. A plain click applies the saved percentage again to the current keys.
Dragging uses 5% steps from 5% to 1000%. Type a value for finer control or percentages below 5%. 100% leaves the timing as it is is a no-change message, not an error.