Microsoft Media Server (MMS), a Microsoft
proprietary network-streaming protocol, serves to transfer
unicast data in
Windows Media Services (previously called NetShow Services). MMS can be transported via
UDP or
TCP. The MMS default
port
A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manch ...
is
UDP/TCP 1755.
Microsoft deprecated MMS in favor of
RTSP (TCP/UDP port 554) in 2003 with the release of the Windows Media Services 9 Series, but continued to support the MMS for some time in the interest of
backward compatibility
In telecommunications and computing, backward compatibility (or backwards compatibility) is a property of an operating system, software, real-world product, or technology that allows for interoperability with an older legacy system, or with Input ...
. Support for the protocol was finally dropped in
Windows Media Services 2008.
[Microsoft's Windows Media Networking Protocols Porting Kit]
/ref>
Microsoft still recommendsURL
A uniform resource locator (URL), colloquially known as an address on the Web, is a reference to a resource that specifies its location on a computer network and a mechanism for retrieving it. A URL is a specific type of Uniform Resource Identi ...
". As part of protocol rollover a Windows Media Player
Windows Media Player (WMP, officially referred to as Windows Media Player Legacy to retronym, distinguish it from Windows Media Player (2022), the new Windows Media Player introduced with Windows 11) is the first media player (application soft ...
version 9, 10, or 11 client opening an "mms://" URL will attempt to connect first with RTSP over UDP and if that fails it will attempt RTSP over TCP. After an RTSP attempt fails, Windows Media Player versions 9 and 10 will attempt MMS over UDP, then MMS over TCP. If using Windows Media Player 11 and an RTSP attempt fails, or if using a previous version of Windows Media Player and MMS fails, a modified version of a HTTP
HTTP (Hypertext Transfer Protocol) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, wher ...
over TCP connection will be attempted. This modified version is referred to by some third parties as MMSH, and by Microsoft as MS-WMSP (Windows Media HTTP Streaming Protocol). The uniform resource identifier (URI) scheme mms has also been proposed to be used for the unrelated Multimedia Messaging Service
Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network. Users and providers may refer to such a message as a PXT, a picture message, or a multimedia ...
(MMS) protocol.
For several years developers of the SDP Multimedia download-tool reverse engineered the MMS protocol and published unofficial documentation for it. However, Microsoft finally released the protocol specification in February 2008.SDP multimedia news update 2008
Sdp.ppona.com (2008-02-08). Retrieved on 2014-02-22.
See also
*
Advanced Systems Format
References
External links
Microsoft Media Server Protocol Documentation downloadMicrosoft Media Server Protocol Documentation on MSDNMicrosoft Media Services 9 Firewall Informationsuch as
MPlayer
MPlayer is a free and open-source media player software application. It is available for Linux, OS X and Microsoft Windows. Versions for OS/2, Syllable Desktop, Syllable, AmigaOS, MorphOS and AROS Research Operating System are also available. A ...
,
VLC and
MiMMS
Streaming Download Project (SDP)– a free, but closed-source, implementation of the MMS protocol; reverse-engineered protocol documentation also freely available. It lets you download the videos available only for streaming forcing the use of TCP protocol (this can not be done with Windows Media Player).
libmmsA free, open source implementation of the MMS protocol.
WMSAuth- Open source media contents authorization plugin.
Sample MMS-Video-Streams
{{Internet Explorer
Application layer protocols
Streaming
Microsoft Windows multimedia technology
Internet Explorer