MotilityFREE

Motility is a set of utilities for moving and reshaping keyframe timing across layers. It doesn't invent motion. It operates on the keyframes you already have, letting you replicate timing between layers, reverse it, line it up, redistribute it, and paint per-layer offsets.

Select the animated layers you want to work on, then move between the tabs. Each tab is one operation, and most show a live preview of the result before you commit.

The Copy / Paste tab moves timing from one layer to others. What travels depends on the mode you pick.

Reverse keyframes in place, or mirror them across the selection. Toggle Mirror easing to flip the curves too, so a reversed move also reverses its acceleration, the natural way to make an exit read as the inverse of an entrance.

Line up start or end points, or distribute keyframes evenly across time. Switch between Layers scope (whole tracks) and Keyframes scope (individual start/end points) depending on how coarse you want the alignment. The preview shows the result before you apply.

Shift timing earlier or later by a fixed step: 50, 100, 150, 200, or 250ms, or a custom value. The preview shows the offset; Apply Nudge commits it. Use it to slide a whole layer's motion off the beat without re-keying anything.

Paint per-layer offsets with a brush (opt-drag to erase), or start from a preset: Fwd, Rev, Center, Edges, or Ease. The brush has an adjustable radius and strength so you can feather a cascade by hand. Apply Sequence stamps the offsets onto the selection.

The Re-timer tab rescales an existing animation's duration without touching its shape. Multiply mode scales the span by a factor (0.5, 0.75, 1.0, 1.25, 1.5, or custom); Length mode sets an exact target duration in milliseconds. Either way it shows the current span and previews the new duration before you apply.