Render Indicators in Final Cut Pro
Final Cut Pro shows you which segments of your sequence need to be rendered by
using render status bars in the Timeline and, in some cases, on individual audio clip
items. A segment is a continuous group of frames within a sequence that require the
same kind of real-time processing.
For example, suppose you have two clips in a sequence. The first clip has a Gaussian
Blur filter applied and the second clip has no effects applied. Final Cut Pro sees two
segments in this sequence: the clip with the Gaussian Blur filter and the clip with no
effect. Adding a transition between the two clips can potentially create a third segment
that has different processing requirements than the other two.