Locked-off static shot, the camera does not move at all, no zoom, no pan, no sha

Locked-off static shot, the camera does not move at all, no zoom, no pan, no shake. Everything in the room stays exactly as in the first frame. The only movement: the right hand on the white mouse scrolls slowly with the index finger on top of the mouse, makes small natural movements of the mouse a few centimetres left and right, and pauses now and then, like someone calmly scrolling a web page...