1. An image processing apparatus, comprising: a selection device that selects a plurality of frames from a video image constituted with a group of frames; an extraction device that recognizes a specific subject image in the plurality of frames having been selected and extracts the recognized subject image; a scene determining device that determines a scene category for each of the plurality of frames having been selected; a priority ranking setting device that sets priority rankings for a plurality of subject images having been recognized by the extraction device, based upon the scene category determined by the scene determining device in correspondence to a frame in which the subject image has been recognized, the scene category including at least one of landscape, portrait, athletic meet, wedding and macro; and an image creation device that creates a background still image based upon at least one of the frames selected by the selection device, and creates a still image by combining the background still image and a plurality of subject images having been extracted by the extraction device, the plurality of extracted subject images having been arranged at positions determined based upon the priority rankings.