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# Creating Variable Speed Timewarps

Variable speed timewarps contain an animated Speed and Timing channel. You can create custom timewarp effects by adding and modifying keyframes for the timewarp.

To create a variable speed timewarp from the Timewarp Editor:

1. Select an element in the timeline, and then apply a Timewarp soft effect.
2. Click E beside the Timewarp soft effect button or double-click the timeline element.

   The Timewarp Editor appears. A white Trim box denotes the limits of the selected element. Head and tail frames appear outside the Trim box.

3. Move to the desired frame and set a keyframe.
4. Select the Speed channel and adjust its value to the new level.
   NoteThe timing curve also moves as you adjust the speed curve.
5. Move to a new frame, and then click the Set button in the Animation controls.
6. Adjust the speed value.
7. Click Process.
8. Click the button to view the timewarp effect in the Player.

To create a variable speed timewarp from the record timeline:

1. Select an element in the timeline, and then create a Timewarp soft effect.
2. Enable Auto Key in the Timewarp Editor and then exit.
3. Move to the desired frames and change the speed in the Speed field.

4. Click Process.
5. Click the button to view the timewarp effect in the Player.

   A variable timewarp is identified in the timeline by a “*” in place of the element's head and tail information.