live video streaming

We searched a lot for a library that could help us with this, and we ended up using a commercial toolkit. It can stream videos and it supports many protocols. I know it supports programming in ASP.NET. If you need more information, you can refer to this page:
http://leadtools.com/help/leadtools/v18/dh/multimedia/to/leadtools.topics.multimedia~leadtools.topics.multimedia.introductiontotheleadtoolsvideostreamingmodule.html

You can see code project's following article, this may help you to do what you need.

http://www.codeproject.com/Articles/15537/Camera-Vision-video-surveillance-on-C