Animation layers let you create and blend multiple levels of animation in a scene. You can create layers to organize new keyframe animation, or to keyframe on top of existing animation without overwriting the original curves.
Animation layers hold animation in your scene, with each layer containing animation curves for attributes that have been assigned to it. The animation layers appear stacked in the Animation Layer Editor, and depending on various settings, blend together to create the result animation that plays in your scene.
For example, you might load an animation sequence with a character running and jumping, then create a new animation layer on top to experiment with modifications to the jumping action. You can watch the original animation to identify a point where you want to exaggerate the character’s movements on the Y-axis, then set keys on the new layer to see how changing the translateY values affect the jump. If you like the modified jump motion, you can choose to merge the animation layers. If you decide to leave your original animation unchanged, you can discard the layer.
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