You can display processing information and modify analysis when retiming a clip.
Do one of the following:
Choose Window > Show Task List (or press F9).
Click the analysis indicator (in the lower-left corner of the Canvas, beside the Play/Mute audio button).

The Background Task List window appears.

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 can interrupt current and pending operations by pressing the pause button next to the progress bar.
In the Background Task List window, click the Pause button.
A message appears detailing how many frames have been processed.
Note: When analysis is paused, projects play back at a much improved speed.
In the Background Task List window, click the Restart button.

In the Background Task List window, drag the clip to analyze to the top of the list.

Analysis begins on the repositioned clip, and the clip previously being processed is paused.
In the Background Task List dialog, select the “Close when tasks are complete” checkbox.