How to modify the times of the animation curves.
Cycle sections of animation with a time warp
To change the range of animation to be cycled
A new time warp curve is created that will be applied to all specified channels of the selected animated items. These channels now cycle through the animation between frames 1 and 30 twice before continuing on with the remainder of the animation.
An alternate way to cycle the complete range of animation on a channel for an infinite (or undetermined) number of times is to use the Cycles or Oscillate out-of-range type on the base action of a channel, instead of applying a timewarp. See the Action Tools menu items in the Action Window. For more information on timewarp curves, see
Scale animation timing with a time warp
These channels are now all scaled by 2, which means that their animation now takes twice as long to play back.
You can also scale the animation on channels by selecting the channels in the Action Window, and using Transform > Scale to scale the channels. See Animation > Editors > Action Window for details.