3 Click Go To Start Frame near the upper right of the Transition
Editor.
The time slider is positioned at the first frame of the transition. By default,
the duration of the transition is 25 frames. This is displayed in the Length
field on the upper left of the Transition Editor.
Red and yellow stick figures (called “ghosts”) in the viewports help to
establish a starting frame for both clips. Both stick figures display during
the period of transition. Red represents the destination clip motion. The
biped interpolates between the yellow and red ghosts over the course of
the transition.
Creating and Using Motion Flow Scripts | 849