To provide a display system which changes a video in accordance with the position of a real object on a display screen, and which provides a strong sense of immersion and a strong sense of presence in a scene. A video display system 100 comprises: a rendering device 10 which generates a two-dimensional video as seen from a specific camera position; a display device 20 which displays the video on a display screen; and a sensor device 30 which detects the position of a real object on the display screen. The rendering device 10 changes the camera position and renders a predetermined object within the video on the basis of the position of the real object the display screen.