GENERATION DEVICE, DISTRIBUTION SERVER, GENERATION METHOD, PLAYBACK DEVICE, PLAYBACK METHOD, PLAYBACK SYSTEM, GENERATION PROGRAM, PLAYBACK PROGRAM, RECORDING MEDIUM AND DATA STRUCTURE

摘要

A distribution server (300) periodically distributes, during a live distribution of a content, MPDs of the contents to a client device (100). The distribution server (300) includes a metadata generating section (320) for generating an XML file containing URLs of media segments (MS) belonging to past Periods. The metadata generating section (320) also generates MPDs.