MULTIMEDIA OPTICAL DISK, REPRODUCING DEVICE, AND REPRODUCING METHOD CAPABLE OF SUPERPOSING SUB-VIDEO UPON MAIN VIDEO IN WELL-BALANCED STATE IRRESPECTIVE OF POSITION OF MAIN VIDEO ON SCREEN

摘要

A multimedia optical disk has a stream area in which a stream comprising main video data including a plurality of frame data which are processed in advance so that the data are adapted to a display having a specific aspect ratio selected from among a plurality of aspect ratios and a sub-video data group which is a group of sub-video data containing telop data and coordinate information for specifying the display position of the telop data are recorded and a management area in which a plurality of sets of display mode information representing the mode in which the frame data which are obtained by decoding the main video data are processed in what display method when the frame data are displayed on a display having one of the different aspect ratios and sub-video specifying information representing the sub-video data containing the coordinate information matching the mode represented by the display mode information out of the sub-video data group contained in the same stream as that of the main video data.