Abstract: The recording medium 100 stores playlist information and a plurality of elementary streams. The playlist information includes a basic stream selection table and an extension stream selection table. The basic stream selection table shows elementary streams that are permitted to be played back in a monoscopic playback mode. The extension stream selection table shows elementary streams that are permitted to be played back only in a stereoscopic playback mode. The stream entry in the extension stream selection table indicates a packet identifier that is to be used by the playback device to perform demultiplexing when the playback device is in the stereoscopic playback mode and the corresponding stream number is set in the stream number register provided in the playback device.

Abstract: A base-view video stream and a dependent-view video stream are recorded on a BD-ROM. The base-view video stream includes picture data constituting a base view of a stereoscopic image. The dependent-view video stream includes offset metadata and picture data constituting a dependent view of the stereoscopic image. The offset metadata includes an offset sequence that defines an offset control of a plane memory when a graphics to be overlaid with the picture data is played back in a one-plane offset mode.

Abstract: A recording medium according to an embodiment of the present invention includes a base-view stream and a dependent-view stream. The base-view stream is used for monoscopic video playback. The dependent-view stream is used for stereoscopic video playback in combination with the base-view stream. The recording medium further includes a first file and a second file. The first file refers to the base-view stream in monoscopic video playback, and the second file refers to the base-view stream in stereoscopic video playback.

Abstract: On a recording medium according to the present invention, extents for a base-view and a dependent-view are arranged alternately. The lower limit of the size of the base-view extents is the larger of a first lower limit value and a second lower limit value. The lower limit of the size of the dependent-view extent is a third lower limit value. The first lower limit value is determined so that, in monoscopic video playback, buffer underflow does not occur during jump periods between base-view extents. The second lower limit value is determined so that, in stereoscopic video playback, buffer underflow does not occur during read periods from each base-view extent to a next dependent-view extent. The third lower limit value is determined so that, in stereoscopic video playback, buffer underflow does not occur during read periods from each dependent-view extent to a next base-view extent.

Abstract: A left view graphics stream and a right view graphics stream recorded on a recording medium each include one or more display sets, and the display sets are data groups used for displaying one screen worth of one or more graphics objects. The one or more display sets included in the left view graphics stream are in one-to-one correspondence with the one or more display sets included in the right view graphics stream, and an identical playback time for the video stream on the playback time axis is set in each of the corresponding display sets. Each display set includes state information indicating whether the data is all data necessary for displaying one screen worth of one or more graphics objects, or is a difference from the immediately previous display set, and the state information included in corresponding display sets indicate identical content.

Abstract: Disclosed is a playback device capable of seamlessly playing back 3D and 2D videos. The playback device plays back 3D video streams including a base-view video stream and a dependent-view video stream. When performing stereoscopic playback using the 3D video streams, the playback device outputs picture data pieces obtained by decoding the base-view video stream and the dependent-view video stream to a display device. When performing 2D playback using the 3D video streams, the playback device outputs each of picture data pieces obtained by decoding the base-view video stream to the display device twice in succession. This way, an output frame rate at which the 2D playback is performed matches an output frame rate at which the stereoscopic playback is performed.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: A playback device for playing back a playlist. The playback device determines, as a current sub-playitem, a sub-playitem that is optimum for the current sub-playitem each time the current playitem changes. The playback device continues a playback of a playitem when a clip file being referred to by the current sub-playitem has been downloaded and is in the Enable state in the local storage; and stops, by issuing a DataStarved event, the playback of the playitem when the clip file being referred to by the current sub-playitem is in a missing state or an invalid state in the recording medium.

Abstract: Provided is a recording medium which enables special playback processing such as fast-forward/rewind although part of the AV stream recorded therein is transformed. An AV stream, a first EP map, and a second EP map are recorded on the recording medium. In the AV stream, part of the multiplexed stream including a first video stream and a second video stream is transformed; the first EP map indicates one or more entry points of the first video stream; and the second EP map indicates one or more entry points of the second video stream. In the AV stream, TS packets constituting I-pictures, of the first video stream, indicated by every 4N-th entry point in the first EP map, and TS packets constituting I-pictures, of the secondary video stream, indicated by the entry points whose presentation time is closest to the presentation time of any one of the every 4N-th entry point in the first EP map.