Patent ID: 8027566

Claim:
A non-transitory computer readable medium on which playlist information, an AV stream, and a sub stream are recorded, wherein the playlist information includes MainPath information and SubPath information, the MainPath information including two or more pieces of playback section information, each piece of playback section information includes (i) a playback start point and a playback end point of the AV stream, and (ii) a stream number table that indicates one or more text subtitle streams that can be played back in synchronization with the AV stream, the stream number table includes a plurality of entries, the plurality of entries including one or more entries of text subtitle streams, each entry of the text subtitle stream includes a SubPath identifier reference, a substream identifier reference, and a packet identifier reference, the SubPath identifier reference indicating a SubPath corresponding to a text subtitle stream, the substream identifier reference defining a substream which includes a text subtitle stream to be pre-loaded into a buffer of a playback apparatus before a playback of an AV stream is started by an AV decoder of the playback apparatus in accordance with a piece of playback section information, the packet identifier reference defining packets of a text subtitle stream to be demultiplexed by a demultiplexing unit of the playback apparatus, and the SubPath identifier reference, the substream identifier reference, and the packet identifier reference included in each entry of all text subtitle streams have a same description in stream number tables in a piece of playback section information, which is second or after in order in the playlist information, and in a piece of playback section information immediately before thereof, when the AV decoder of the playback apparatus is to be caused to perform a process of seamlessly connecting the second or after piece of playback section information with the piece of playback section information immediately before thereof.