In xsights we are doing a lot of work with mobile video, streaming and the like. We are also doing most of our development in C#. Up until recently we've had to resort to C++ (e.g. GStreamer) and sometimes Java (JMF) to handle RTP related tasks.
I've been searching for RTP stack on .NET for a long while and never found anything worthwhile. There's one implementation from Microsoft Reaseach (as part of ConferenceXP ) however the licensing for this is problematic for commercial applications. Well, a few days ago I finally managed to locate a solution from a small company that goes by the name streamcoders. Not only do those guys offer an RTP.NET implementation it is even free to use and distribute (you can get the source code for a fee). They also have a few other components dealing with related technologies (streaming,coding, encoding).
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