Video display system and a video display method

A video display system according to embodiments includes a plurality of video display devices, the video distributor. A plurality of image display devices are arranged adjacent to each other. Video distributor distributes the source image so as to output a plurality of output images overlap each other in the region corresponding to the boundary portion of the plurality of video display devices for each of the plurality of video display devices. Video processing unit of the image display device, after the image quality improvement processing for high image quality output video from the video distributor, correction processing including a process of reducing the area to be enlarged by the optical element of the output image I do.