An image processor is connectable with a storing medium storing at least one set of still image data each corresponding to a still image and at least one set of moving image data each including a plurality of sets of frame image data corresponding to a plurality of frame images. An extracting unit extracts at least one set of frame image data from the plurality of frame image data sets of each moving image data set. A layout order determining unit determines a layout order of still images each corresponding to the still image data sets and frame images each corresponding to the frame image data set extracted by the extracting unit according to a predetermined criterion. An output unit outputs an image list with the still images and the frame images laid out therein in the layout order determined by the layout order determining unit.