RTSP was developed by [[RealNetworks]], [[Netscape]]<ref name="Inc.1998">{{cite book|author=InfoWorld Media Group, Inc.|title=InfoWorld|url=https://books.google.com/books?id=DFEEAAAAMBAJ&pg=PA18|date=2 March 1998|publisher=InfoWorld Media Group, Inc.|page=18|issn=0199-6649}}</ref> and [[Columbia University]].<ref name="Osso1999">{{cite book|author=Rafael Osso|title=Handbook of Emerging Communications Technologies: The Next Decade|url=https://books.google.com/books?id=5fms2DW7mMUC&pg=PA42|year=1999|publisher=CRC Press|isbn=978-1-4200-4962-6|page=42}}</ref> The first draft was submitted to IETF in October 1996 by [[Netscape]] and [[Progressive Networks]], after which [[Henning Schulzrinne]] from [[Columbia University]] submitted "RTSP'" ("RTSP prime") in December 1996.<ref>{{Cite webnews|lastlast1=Rao|firstfirst1=Anup|last2=Lanphier|first2=Rob|title=Real Time Streaming Protocol (RTSP)|url=https://tools.ietf.org/html/draft-rao-rtsp-00.html|access-date=2021-02-23|websitenewspaper=tools.ietf.orgIetf Datatracker|language=en}}</ref><ref>"RTSP prime" [[Henning Schulzrinne]], [[Columbia University]](http://www.cs.columbia.edu/~hgs/papers/Schu9612_RTSP.ps) December 1996</ref> The two drafts were merged for standardization by the Multiparty Multimedia Session Control Working Group (MMUSIC WG) of the [[Internet Engineering Task Force]] (IETF) and further drafts were published by the working group.<ref>{{Cite webnews|lastlast1=Schulzrinne|firstfirst1=Henning|author-link=Henning Schulzrinne|last2=Rao|first2=Anup|last3=Lanphier|first3=Rob|date=1997-02-24|title=Real Time Streaming Protocol (RTSP) (draft-ietf-mmusic-rtsp-01.txt)|url=https://tools.ietf.org/html/draft-ietf-mmusic-rtsp-01.html|url-status=live|access-date=2021-02-23|websitenewspaper=tools.ietf.orgIetf Datatracker|language=en}}</ref><ref>{{Cite webnews|lastlast1=Schulzrinne|firstfirst1=Henning|author-link=Henning Schulzrinne|last2=Rao|first2=Anup|last3=Lanphier|first3=Rob|date=1998-01-15|title=Real Time Streaming Protocol (RTSP) (draft-ietf-mmusic-rtsp-08.txt)|url=https://tools.ietf.org/html/draft-ietf-mmusic-rtsp-08.html|url-status=live|access-date=2021-02-23|websitenewspaper=tools.ietf.orgIetf Datatracker|language=en}}</ref> The [[Proposed Standard]] for RTSP was published as RFC 2326 in 1998.<ref name=":0">RFC 2326, ''Real Time Streaming Protocol (RTSP)'', IETF, 1998</ref> RTSP 2.0 published as RFC 7826 in 2016 as a replacement of RTSP 1.0. RTSP 2.0 is based on RTSP 1.0 but is not backwards compatible other than in the basic version negotiation mechanism, and remains a "Proposed Standard".<ref>{{Cite webjournal|lastlast1=Schulzrinne|firstfirst1=Henning|last2=Rao|first2=Anup|last3=Lanphier|first3=Rob|last4=Westerlund|first4=Magnus|last5=Stiemerling|first5=Martin|editor-first1=M |editor-last1=Stiemerling |date=December 2016|title=Real-Time Streaming Protocol Version 2.0|url=https://tools.ietf.org/html/rfc7826.html|url-status=live|access-date=2021-02-23|website=tools.ietf.org|doi=10.17487/RFC7826 |language=en}}</ref>
