To continuously track movement of a specified person who appears on an image of motion picture content.

A face detecting unit 13 detects a face of a person who exists on a frame. A face identifying unit 14 specifies the person by calculating a feature amount of the detected face and collating the calculated feature amount with a person-face database 15. A person specifying unit 16 specifies the person of the detected face by collating sound information when the face is detected with a person-sound database 17 about a face with which the person has not been specified at the face identifying unit 14. A person tracking unit 18 tracks movement of the face of the specified person. A face is detected at a face detecting unit 13, then a sound detecting unit 19 extracts a sound at the time when a mouth of the face is moving. A sound analyzing unit 20 calculates frequency distribution of the extracted sound. The present invention can be applied to a person tracking apparatus.