1. A moving image generation system comprising: an image acquisition unit that acquires a plurality of moving images acquired by performing continuous photography by a plurality of image capture units that is disposed so as to differentiate their photographing areas; a subject detection unit that detects, by way of image recognition, from within each moving image acquired by the image acquisition unit, a subject arbitrarily designated; a clipping control unit that, according to each timing in the continuous photography, selects a moving image including a subject-included area that is a partial image area in which the subject detected by the subject detection unit is included at a predetermined position or in a predetermined size, among the plurality of moving images acquired by the image acquisition unit, and controls to execute selective clipping processing that clips an image within the subject-included area from the moving images thus selected; and a moving image generation unit that couples the plurality of images that is selectively clipped in the order of photographing time according to each timing in the continuous photography according to the control of the clipping control unit so as to generate a single moving image.