Retiming

Your motion graphics projects may require you to perform special timing tricks on media: speeding a clip up, slowing it down, or playing it back at a variety of speeds.

Using Retiming Behaviors

The Retiming category of behaviors offers various ways to quickly execute the most commonly applied retiming tasks. A hold frame or strobe is easily accomplished with a retiming behavior. Take some time to look over the behaviors in the Retiming category before spending a lot of time in the Inspector creating your own custom retiming from scratch.

Tip: You can also manipulate clip timing in the Timeline with the help of modifier keys. Indicators in the Timeline help you visualize loops and other retiming conditions. For more information on Retiming in the Timeline, see Retiming in the Timeline.

Timing Controls in the Properties Tab

Media objects (images and movie clips as opposed to Motion-created shapes) have individual timing parameters in the Properties tab of the Inspector. Click the disclosure triangle beside the Timing category to reveal these timing controls.

  • Speed: Sets the speed of the clip as a percentage. The default is 100%. Values lower than 100 play back the clip more slowly than its original speed and also extend the duration of the clip. Values higher than 100 play back the clip faster than its original speed and shorten the duration of the clip. This parameter appears only when Time Remap is set to Constant Speed.
  • Retime Value: Displays the time value of the clip at a given frame. This parameter appears only when Time Remap is set to Variable Speed. When you set Time Remap to Variable Speed, two keyframes are automatically generated at the first and last frame of the clip. The two default keyframes represent 100% constant speed. Adding keyframes to this parameter and assigning them different Retime Values makes the speed of the clip ramp from one speed to another.
  • In: Sets the In point of the object, in both constant and variable speed modes. Adjusting this parameter always moves the object In point to the specified frame without affecting the duration of the object.
  • Out: Sets the Out point of the object, in both constant and variable speed modes. Adjusting this parameter always moves the object Out point to the specified frame without affecting the duration of the object.
  • Duration: Sets the total duration of the object. If Time Remap is set to Constant Speed, adjusting Duration will also affect the Speed and the Out point. If Time Remap is set to Variable Speed, adjusting Duration will not affect variable speed playback.
  • Reverse: This checkbox controls whether the clip is played back in reverse.
  • End Duration: A slider that lets you set the number of frames by which the clip is extended at the end of its duration. This value may be adjusted only if End Condition is set to a value other than None.

Displaying and Editing Retiming Tasks

You can display processing information when retiming a clip.

To display more information about ongoing clip analysis
Do one of the following:
  • Choose Window > Show Task List.

  • Click the analysis indicator (to the left of the transport controls underneath the Canvas).

    Figure. Analysis Indicator in Canvas playback control area.

    The Background Task List dialog appears.

    Figure. Background Task List showing pause button.

    The Background Task List shows all processes Motion is working on in the background. Each task is labeled, has a progress bar, and displays text describing how far along the task is. You may interrupt current and pending operations by pressing the pause button next to the progress bar.

To pause clip analysis
  • In the Background Task List dialog, click the pause button.

    Figure. Background Task List showing pause button.

    Once paused, a message appears detailing how many frames of the total number of frames have been processed.

    Note: When analysis is paused, projects play back at a much improved speed.

To restart clip analysis
  • In the Background Task List dialog, click the analyze/pause button.

    Figure. Background Task List showing restart clip analysis button
To reorder clip analysis
  • In the Background Task List dialog, drag the clip you want to analyze to the top of the list.

    Figure. Background Task List showing task order being rearranged.

    Analysis begins on the repositioned clip and is paused on the clip that was previously being processed.

To automatically close the Background Task List dialog when analysis is complete
  • In the Background Task List dialog, turn on the “Close when tasks are complete” checkbox.