Introducing keyframe tracking

Keyframe tracking is used for more difficult tracking targets due to either…complex image content, or rapid motion.…The idea is to plant periodic tracker keyframes that will guide the tracking…calculations from keyframe to keyframe.…I have a fresh Tracker Node here that I can use to show you how it works.…I am going to zoom in here;…I am using the Shift key.…I am going to plant a tracker right on this box.…Notice, I've got a keyframe on the timeline.…

I am going to move the playhead partway through the shot, I will reposition the…tracker, and again, I got a keyframe and notice I now have two keyframe windows,…each labeled with what frame they are on.…So, let's go forward a little more, reposition, a new keyframe window, and we…will go to last frame here and reposition there, and there's my fourth keyframe…window, again, each neatly labeled with what keyframe they're on the timeline.…

Now I can jump between the keyframes by either clicking on the zoom window…or come down here on the timeline and use the either Next Keyframe or…