1. An image editing apparatus for editing a plurality of images, comprising: a determination unit adapted to determine, among the plurality of images, which of vertically long images or horizontally long images are larger in terms of one of number of images, number of frames, and playback times; a decision unit adapted to decide an aspect ratio of images which are large in terms of one of number of images, number of frames, and playback times among the images determined as being larger by said determination unit; and an output unit adapted to output the plurality of images at the aspect ratio decided by said decision unit.