You can change the timing of a clip without modifying the clip’s animation curves using time warps. Typically, you use time warps to reverse the animation in a clip, or to ease in or ease out of a clip’s animation. When you create a time warp for a clip, a time warp curve is added above the clip in its hierarchy and a green bar appears on the clip. See Time warps. You can manipulate the time warp curve to adjust how the time warp affects the animation in its clip.
See Scene timewarp effects for an explanation of time-warping.
To create a time warp for a clip
To edit a time warp
When working in the graph view with these tools, use the middle-mouse button.
To undo edits to the Time Warp curve:
While in the Graph Editor, click Ctrl-Z to undo the last change.
To restore the Time Warp curve to the original curve:
In the Time Editor, right-click and select Reset from the clip contextual menu.
To remove the Time Warp curve from the clip:
In the Time Editor, right-click and select Delete from the clip contextual menu.