A panorama image generation program allows a computer to execute a panorama image generation method that generates a panorama image based on video encoded data obtained by encoding a motion picture photographed by means of a moving camera, the program allowing the computer to execute: a decoding processing step that decodes the video encoded data to acquire a frame image and motion vectors; a camera position information generation step that calculates the movement information of the frame image based on the motion vectors and calculates camera position information representing the position of the camera based on the movement information of the frame image; and a display data generation step that generates display data obtained by processing the frame image based on the camera position information corresponding to the frame image.
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