In a stereoscopic image processing device capable of displaying and/or recording stereoscopic animated images and stereoscopic still images, stereoscopic still image data representing any stereoscopic still image are extracted from predetermined stereoscopic animated image data, and the parallax amount of the stereoscopic still image represented by the extracted stereoscopic still image data is acquired. The parallax amount of the stereoscopic still image data is converted so as to be larger than the acquired parallax amount.