Glass cantilever image

This image shows a glass cantilever. I actually have a video file where one can see the movement of this glass cantilever ( from left to right). The aim is to track the movement of the glass cantilever. Ideally, it would be nice to track a single point on the cantilever but if not, it would also be ok, I guess, to track the cantilever as a whole.
Also, sometimes there are some things sticking on the cantilever which can act as points to target and track. But in some of the video files that I have, such points may not be there or not very dark (presenting a strong contrast with the background). So even in those cases is it possible to track the cantilever ?