RTSP protocol is the default protocol for streaming Windows Media. RTSP protocol is also used for streaming Real Video/Real Audio, streaming QuickTime video (.mov, .mp4, .sdp streams). MMS protocol is used for streaming Windows Media only. • RTSP using UDP is called RTSPU • RTSP using TCP is called RTSPT • MMS using UDP is called MMSU • MMS using TCP is called MMST Media could also be streamed through HTTP or other protocols. The majority of streams are streamed through HTTP, RTSP, MMS and RTMP. PNM protocol is usually not used on the newest servers, but such streams are not very rare. What is DRM (Digital Rights Management) ? DRM (Digital Rights Management) is a secure technology which enables the copyright owner of a piece of intellectual property (such as a music, video, or text file) to specify what a user can do with it. Typically, this is used to offer downloads without having to worry that the user is freely distributing the file over the Web without any compensation to the copy