This standard specifies the media presentation description (MPD) format and media segment format for dynamic and adaptive streaming over networks such as Hypertext Transfer Protocol (HTTP). Particularly@ the specified formats support multi-stream synchronization@ content protection@ and content authentication. Purpose This standard specifies the MPD format and media segment format for dynamic and adaptive streaming over networks such as HTTP@ with highlighted features of multi-stream synchronization@ content protection@ and content authentication. The target applications and services include@ but are not limited to@ Internet video@ on-demand streaming@ and live streaming.