Zoom the Timeline
You can zoom the Timeline in order to easily find frames and accurately place edits.
To zoom the Timeline
In the area underneath the Timeline, do one of the following:
Click Zoom in or Zoom out to adjust the zoom in increments.
Drag the slider between the Zoom in and Zoom out icons.
To view the entire Timeline, spanning the length of the video, click Timeline Overview . You can return to the previous zoom by clicking this button again.