Sep 15, 2013
What is Tracker?
Tracker is a free video analysis and modeling tool built on the Open Source Physics (OSP) Java framework. It is designed to be used in physics education.
Tracker video modeling is a powerful new way to combine videos with computer modeling. For more information see Particle Model Help or AAPT Summer Meeting posters Video Modeling (2008) and Video Modeling with Tracker (2009).
source: http://www.cabrillo.edu/~dbrown/tracker/
Basically, Tracker is a computer program that analyzes and creates models of the motion of objects in videos that are being analyzed.