Ethan Kim

o Websites o Youtube, Hulu, Fox, NBC, etc. o Media Players o Windows Media Player, Real Player o Video Conferencing o Skype, MSN Messenger, Ventrilo o Involved Computing Industry Giants o iTunes, iPhone/iPad, Google Wave, Google Voice, Silverlight

o Multiparty Multimedia Session Control Work Group (MMUSIC WG) o Part of Internet Engineering Task Force (IETF) o Published documentation as RFC 2326 (1998) o MMUSIC goals and milestones incomplete since August 2009

o Primary usage of Internet required no delay constraints o TCP/IP performance satisfactory o Multimedia services gain popularity o TCP/IP identified with limitations o Unacceptable delay in playback o No mechanism to check bandwidth o TCP does not provide timing information o RTSP developed

o Intentionally similar to HTTP in syntax and operation o Differences o New methods and protocol identifier o RTSP server maintains state by default o Both server and client can issue requests o Data is transferred by different protocol o Use ISO (UTF-8) o Request-URI contains absolute URI

o Privacy o Does not pertain to protocol o Security o HTTP authentication methods, transport and network layer security mechanism apply o Pervasiveness o Almost all media data is controlled by RTSP o Protocol is used internationally

o Reliability o Involves unreliable data, protocol is reliable o Allow control by both client and server o Robustness o No significant bugs or errors have been identified o Both playback and recording controls are possible o Allow for multi-servers for multicast and unicast network

o Interoperability o Loose coupling o No dependent protocols o Transport-independent o Requires no specific format o Interoperation between clients and servers from different vendors o Support of the Community o Maintained by MMUSIC WG of IETF

o Maintainability o No revision has been made since development in 1998 o Revision was planned for December 2009 o Ease of Use o Requires knowledge of coding, other internet transport protocols o RTSP is flexible, easy to implement o Easy extendibility o Easy to parse o Proxy and firewall friendly o HTTP friendly

o Implemented in streaming media players o “Network remote control” o Designed to control multiple data delivery sessions o Breaks data into packets o User is able start listening o Simultaneously more packets are downloaded and decopressed o Examples o Youtube, Windows Media Player, Skype

o Necessary and well developed o Flexible, robust, interoperable, extendable, secure, pervasive, and reliable o Constant evolving Internet o Flash vs. HTML5 o RTSP is highly adaptable

o Work Cited o Huuhtanen, Juha. "Real-Time Streaming Protocol (RTSP)." Real-Time Streaming Protocol (RTSP). Helsinki University of Technology, 22 Nov Web. 19 Apr o "Multiparty Multimedia Session Control (mmusic)." IETF Datatracker. Web. 19 Apr o Schulzrinne, H., A. Rao, and R. Lanphier. "Real Time Streaming Protocol (RTSP)." Internet Engineering Task Force. MMUSIC WG, Apr Web. 19 Apr