Motorized mechanisms in a PTZ camera allow it to tilt through the use of a motorized pan-tilt unit. This unit consists of gears, motors, and a control system that work together to remotely adjust the camera's angle. The motorized mechanism receives commands from the user or a preset program, causing the camera to tilt up, down, left, or right. The motor drives the gears, which in turn move the camera's positioning mechanism, allowing for precise and smooth tilt movements. This enables the PTZ camera to capture a wide range of angles and viewpoints without the need for manual adjustment.