A thumbnail display screen is displayed. The thumbnail display screen contains a first thumbnail array and a second thumbnail array, in which the images of two groups of frames extracted from a moving image file according to different rules are aligned in the order of appearance in the moving image. The first thumbnail array can be shifted forward or backward via an input apparatus, and the second thumbnail array is shifted in conjunction with a shift of the first thumbnail array. When one of the frames on the thumbnail display screen is selected, the moving image is played from the selected frame or the nearest scene switching point from the frame.