Abstract: A decoding unit is configured to decode one of coded data for a video of a first image quality and coded data for a video of a second image quality different from the first image quality, the videos sharing the same image content. An editing unit is configured to edit, by user control, the video of the first image quality or the video of the second image quality decoded by the decoding unit. The editing unit causes an editing operation applied to one of the video of the first image quality and the video of the second image quality to be reflected in the coded data for the other video irrespective of user control.

Abstract: A coding unit codes a moving image. An object detector detects an object from within a picture contained in the moving image, and generates, for each picture, object detection information containing at least the number of objects detected within an identical picture. When a codestream is generated from coded data generated by the coding unit, a stream generator describes the object detection information in a prescribed region of the codestream.