Use to remap the length of an animation; making it run slower or faster. The Old and New settings may either be used as absolute values or as a ratio: For example, setting Old to a value of 2 and New to 1 will run the animation twice as fast.

Warning

Using Time Stretching will not influence the Start or End frames set above, so make sure that your animation is not cut off or has extraneous still frames at the end.

原始动画的长度（以帧为单位）。

新动画将持续到的帧长度。