The Bake row in More turns enabled expressions into editable keys. Its frame field sets the sampling interval.
Choose the range and properties
- Set the composition work area to the range you want to bake.
- Select the individual properties with enabled expressions in the Timeline.
- Click More.
- In the Bake row, set every to the number of frames between samples.
- Click Bake, or press Enter in the frame field.
Bake uses selected properties and the work area. Selecting a few keys does not restrict the bake to those keys.
For separated Position, select the individual axis properties. Locked layers are skipped. Select properties with expressions to bake means no eligible selected property was found. No live expressions to bake means the eligible properties have no expression that is both present and enabled.
What changes
Bake samples each property’s value with its expression active, then replaces keys within the work-area range with the samples. Keys outside that range remain. Boundary handling includes keys within half a frame of either edge.
Sampling starts at the work-area start and advances by the chosen frame interval. A one-second work area at 30 fps produces 31 keys when baking every frame, including both ends. With a larger interval, the last sample follows that interval and need not land exactly on the work-area end. A sample within half a frame beyond the end is included.
After baking, the expression is disabled and its text stays on the property. You can inspect the result and edit ordinary keys. Re-enabling the expression makes it active over the baked keys again.
Use a one-frame interval for detail. Larger intervals write fewer keys and can miss fast changes between samples. Playback between samples is determined by the resulting key interpolation, so compare the animation after baking. Use Edit > Undo once to restore the previous keys and expression state.