Live webcam broadcast - silverlight+media services, or flash? [closed]

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i am about to design feature for web app enabling live video trainings. Requirements are pretty much this: there are some VIP members (trainers), they are able to start new lesson (with nothing else but web browser and webcam), and non-vip members can watch it online (and the session should be recorded too for later on-demand watching..). The application is ASP.NET MVC 2.

I done some quick research, and as I see it, there are 2 platforms : adobe flash (media server + flash player on client side), and MS (windows media services + silverlight on client). I would rather go for MS solution (already got licences for windows server,etc.), but I am not sure if it is even possible - I have not found any examples of somebody doing this - I mean upstreaming video from webcam do server, encoding it with media encoder (this part is the question) and streaming it to clients... can you give me any clues about this please? or should I go for Flash platform for this ?

Thanx a lot 开发者_C百科!