The Expert view timeline graphically represents your movie project as video and audio clips arranged in vertically stacked tracks. When you capture video from a digital video device, the clips appear sequentially as they occur.
The Expert view timeline uses a time ruler to display the components of your movie and their relation with each other over time. You can trim and add scenes, indicate important frames with markers, add transitions, and control how clips are blended or superimposed.
The zoom controls on the Expert view timeline let you zoom out to see your entire video, or zoom in to see clips in more detail. You can also change how the clips appear in the tracks, and resize the tracks and the header area.