This is a very marketable skill to have if you want to move into industry using computers. In either case it is the difference between how many samples are taken per second versus how long the shutter is open for each particular frame. If the shutter is open for too long get blur of the image. So there is not additional information being sent to the camera. The higher the frame rate and the better the resolution, the higher the information rate being sent to the computer.
Most cameras are analogue.
Newer cameras are digitial from the still picture format, and even hand held video cameras are now digital. You can scan through and get any digital image you want. Television cameras that record at a 100 Hz or faster for sporting events record at actual faster frame rates. They have to have much more finely tuned mechanical parts and faster rates of acceptance to the playback unit. These are the same type of compression that are used when sending images across the internet.