Information processing device, information recording medium, information processing method, and program

摘要

Provided is an information processing device including: a data processing unit that performs format conversion of converting MPEG-2 TS format data into MP4 format data, wherein the MPEG-2 TS format data is data that includes each segment region having a plurality of pieces of variation data decryptable with different keys, and wherein the data processing unit selects encrypted MP4 variation data from the segment region of the MPEG-2 TS format data and stores the MP4 variation data as MP4 format structure data in an MP4 file, while the encrypted variation data remains, without performing a decryption process and a re-encryption process for the selected MP4 variation data.

主权项

1. An information processing device comprising:
circuitry configured to perform format conversion of converting MPEG-2 TS format data into MP4 format data, wherein the MPEG-2 TS format data is data that includes each segment region having a plurality of pieces of variation data decryptable with different keys, wherein the circuitry is configured to select encrypted MP4 variation data from the segment region of the MPEG-2 TS format data and store the MP4 variation data as MP4 format structure data in an MP4 file, while the encrypted variation data remains, without performing a decryption process and a re-encryption process for the selected MP4 variation data, wherein each of the pieces of variation data set in the segment region of the MPEG-2 TS format data is data in which a variation identifier is embedded and is data for which the variation identifier is extractable from decrypted data, and wherein the segment region of the MEPG-2 TS format data is a data region in which one piece of variation data is selected and reproduced along a reproduction path permitted to a reproduction device.