LibMMS is common library for parsing mms:// and mmsh:// type network
streams. These are commonly used to stream Windows Media Video
content over the web. LibMMS itself is only for receiving MMS stream,
it doesn't handle sending at all. If you need streaming
functionality, look for other protocol, such as RT(S)P. MMS is legacy
thing, being closed with no specs and abandoned even by its creator,
the Microsoft Corp.
