An information processing method for an information processing apparatus to process content data, including generating content data information associated with content data; and registering information associated with the content data generated in the content data information generation step, in an edit list indicating a result of editing of the content data. The apparatus makes it possible to manage a large number of image data in the form of an editing result and easily manage a large number of image data having complicated relationships. A clip data detector of an editing apparatus detects clip data including image data and audio data supplied from the outside. The clip data detector extracts meta data associated with detected clip data and supplies it to a sub clip processing unit. A sub clip information generator of the sub clip processing unit generates sub clip information based on the meta data and supplies the generated sub clip information to a sub clip information registration unit. The sub clip information registration unit registers the sub clip information generated by there sub clip information generator in an edit list stored in an edit list memory.