Tracking shot

Shot with the camera follows a moving subject

In cinematography, a tracking shot is any shot where the camera follows backward, forward or moves alongside the subject being recorded. Mostly the camera’s position is parallel to the character, creating a sideways motion, tracking the character. Tracking shots (also called travel shots) differ in motion from dolly shots, where the camera follows behind or before the character, resulting in either an inward or an outward movement.

From Wikipedia, under CC BY-SA. More on occurri.