2D Tracking - Nuke 101: Professional Compositing and Visual Effects - page 207

8. InTracker1'sPropertiespanelclicktheforwardplay-lookingbutton,whichisthe
Track Forward button ( FIGURE 5.5 ) .
Figure 5.5. Pressing the Track Forward button will start tracking to the end
of the clip.
The Tracker node starts to follow the pixels inside the pattern box from frame to
frame. A Progress Bar displays showing you how long before the Tracker (short-