C# App to stream part of desktop as ogg - repost

I want a C# application that will allow the user to draw a rectangle on his desktop. Once the rectangle is drawn and confirmed - the application will act as a simple web server that will stream the rectangle graphics as an ogg video file (e.g. http://localhost/[login to view URL]) . The process of drawing the rectangle for screen streaming should look like this (time 00:49): [login to view URL] The stream will not be a "frozen" picture, but a real stream of what's going on in that frame - for example if someone selected a rectangle around his web browser, the stream will show the sites he's visiting in near real-time. Resolution and fps should be user configurable, should run on Win7 32 and 64 bit. The ogg stream must be able to be played by VLC player remotely by providing the URL.