1. An image processing apparatus comprising: a frame image extraction unit which extracts a plurality of frame images from a moving image; an image analysis unit which performs image analysis of each frame image to determine a scene of each frame image; a frame image division unit which divides the plurality of frame images into one or more divided frame image groups according to a replay order of the moving image while taking one frame image different from the scenes of preceding and following frame images in the replay order of the moving image, or two or more frame images, in which the same scene is consecutive, as a divided frame image group based on the scene of each frame image; a publishing/non-publishing determination unit which determines whether or not to publish each divided frame image group based on the priority of publishing for a scene of the divided frame image group; and a digest moving image generation unit which combines a part or all of frame images included in the divided frame image group determined to be published to generate a digest moving image of the moving image.