I would like to make some short movie clips explaining how algorithms work. To do so, I would like to film how I write / scribble on the paper.
Are there tripods which support filming what is directly below the camera or should I tinker such a tripod myself? In case you recommend building it myself: How is this standard "mount" at the bottom of each digital camera called? (So that I can buy something to fixate the camera.)
(I have a Lumix DMC TZ41 digital camera. Do movie cameras have other "mounts" for tripods than digital cameras?)
Some online courses (Udacity, Coursera) make something similar / exactly what I would like to do. See Programming - CS101 - Udacity for example: