Live Video object tracking Is there any (Open Source or Low Cost) software that can track x,y position of objects in live video?

An example would be tracking the position of a player in a soccer match.
OpenCV is a good repository of computer vision resources. An example of how to select and track a region of interest is given here: https://docs.opencv.org/3.4.0/d2/d0a/tutorial_introduction_to_tracker.html 


Also see an example blog post here: https://www.learnopencv.com/object-tracking-using-opencv-cpp-python/ 

More state of the art research results and code in visual object tracking are maintained at the following website: http://www.votchallenge.net/vot2017/trackers.html