Retime animation UE4 instead of play rate?

Development Character & Animation
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1

Hi there.
Is a retime system in UE4 that can retime an animation clip like ease in and ease out or playing faster at first and normal ate the mid?
Thanks

2

It seems there is not. So I exported my animation and edited that in Maya.

3

I couldn’t find anything so I used motionbuilder to do this. Motionbuilder has retime curves in FCurve window.