With the Cinema 4D R18 release came an expanded tracking toolset. C4D has had camera tracking for a while now, with the motion tracker. The same brilliance and ease of use comes to a new object tracker system in R18.
With the new tracker you can rebuild the camera motion from live action footage, and any number of objects. Essentially you can transform a video to a 3D scene. The object tracker lets you reconstruct the object based on tracks or reference geometry. Great for a lot of stuff.
How does it all work? Watch Digital Meat Samuel Winter walk through the process for using the new tracker in C4D R18. Sam uses a simple marker in the shot to track an object onto. New features like the object tracker makes C4D visual effects workflows mach more streamlined.