Thanks for the video. I finally got back to this thread...
I think I understand how this tracking sw works now. It temporarily ignores the motion detector until the camera reaches it's new position, other wise the entire background scene would probably confuse the sw into thinking that everything is moving all over the entire frame.
I noticed that how blue blouse is the item being tracked. Is that because the blue has a higher difference in color than the yellowish background and yields a better s/n ratio in the motion detector? If the color sensitivity were more broad, I suppose that the tracker would show a box around both people, but in this case it's only around her blouse. Interesting.