V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

RTSP
       Real Time Streaming Protocol (TV, WWW, UDP, TCP/IP, RDP,
Multicast, VoIP, RFC 2326)


The Free On-line Dictionary of Computing (30 December 2018):

Real Time Streaming Protocol
RTSP

    (RTSP) An application
   layer protocol for controlling delivery of a stream of
   real-time multimedia content.  RTSP allows users to start
   playing from a certain position.  It does not actually deliver
   the data, but works alongside existing delivery channels such
   as UDP, TCP, or IP multicast.

   RTSP was developed by RealNetworks, Netscape
   Communications, and Columbia University, and is described
   in RFC 2326, April 1998.  RTSP is an IETF proposed
   standard.

   FAQ
   (http://real.com/devzone/library/fireprot/rtsp/faq.html).

   (1999-08-26)