Transmission protocol of streaming media \ x0d \ x0d \ When you watch online movies or TV, you will generally notice that the connection of these files does not start with http or ftp, but with rtsp or mms. Why? In fact, these protocols, like http and ftp, are all protocols for transmitting data on the network, but they are specially used for transmitting streaming media. Next, let's take a look at the main streaming media protocols currently used: \ x0d \ x0d \ 1. RTSP (Realtime Streaming Protocol), proposed by RealNetworks and Netscape***, is now used in RealMedia products of RealNetworks; \ x0d \ x0d \ 2。 Pnm (progressive networkaudio) is also a real-time transmission protocol, which generally adopts UDP protocol and occupies port 7070. However, when your server is in a firewall and port 7070 is blocked, and your server sets SmartingNetwork to true, it adopts http protocol and occupies the default port 80. \ x0d \ \ x0d \ 3。 MMS (Microsoft Media Server Protocol) is Microsoft's streaming media server protocol, and it is the default method to connect WindowsMedia unicast service. \x0d\\x0d\ introduces the three main protocols. You may ask, which protocol does Apple's QuickTime use? In most cases, QuickTime uses http protocol, but in fact it is also a standard streaming media transmission protocol, which is a standard RTSP protocol. The RTSP used by Real Company is developed by itself. \ x0d \ x0d \ In streaming media transmission, the standard protocols are RTP(RealtimeTransportProtocol), RTCP(Real time Transport Protocol), RTSP(RealTimeStreamingProtocol) and RSVP(resourceserveprotocol), and the products of manufacturers are all developed on the basis of these protocols. Limited by space, I won't discuss it in depth here.