GENERATION APPARATUS, REPRODUCTION APPARATUS, DATA STRUCTURE, GENERATION METHOD, REPRODUCTION METHOD, CONTROL PROGRAM, AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To reduce the possibility in which update of reproduction information may not be reflected and wrong reproduction may be performed.SOLUTION: A transmitter 1 comprises: a CI update determination unit 15 which identifies a media unit having composition information (CI) updated, from among plural media units; and a header generation unit 14 which generates a transmission packet obtained by adding a header including a flag indicating update of the composition information to the media unit identified by the CI update determination unit 15.