Patent ID: 8154964

Claim:
A data processing device for processing recorded data recorded on a data recording medium, said recorded data includes, a plurality of files of multiplexed data into each of which a plurality of streams of data are multiplexed, and a plurality of metadata files including metadata about said multiplexed data, the plurality of metadata files corresponding in number to the plurality of files of multiplexed data, wherein each of said plurality of metadata files include first identification information that identifies one of the plurality of streams of data in a multiplexed file and second identification information that identifies another one of the plurality of streams of data in the multiplexed file, the first identification information identifying an encoding format defined by MPEG-2 (ISO/IEC 13818-1), and the second identification information identifying an encoding format not defined by MPEG-2 (ISO/IEC 13818-1), and said data processing device comprising: reading means for reading said metadata; specifying means for specifying data multiplexed into the multiplexed data on a basis of said first and second identification information included in said metadata; and processing means for processing the data specified by said specifying means.