Apple Final Cut Pro 5 - Manual (Page 1322)

Chapter 24 Rendering 535
III
Render Indicators in Final Cut Pro
Final Cut Pro shows you which parts of your sequence need to be rendered by using
render bars in the Timeline and, in some cases, on individual audio clip items.
About Render Status Bars in the Timeline
There are two render status bars in the Timeline above the ruler: The upper one is for
video and the lower for audio.
As you create a sequence, indicators show which sections of the sequence require
rendering to play back in real time at the selected render quality.
Render bars in the
Timeline; the upper
bar is for video, the
lower bar is for
audio.