[editor utility] How to remove frame from a to b in animation? use editor utility.

Development Programming & Scripting
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1

i have a big animation,i want to split it to many little animation.

2

I have a very long skeletal animation that I want to split into multiple smaller animations. I’d like to do this using editor tools because there are too many animations. The approach I thought of is: first create multiple copies of the animation, then delete the unwanted frames. Is there a simpler way to do this?