Streaming live video from WCF service to Silverlight -

There is a need to stream live captured data (from the screen / web camera) in a Silverlight client from the WCF service. I

Since this is live data, I do not feel like losing the packet ... It is also important that this will be real-time data. Any suggestions how can I do this? How does the WCF service transfer? Should the Silverlight client consume the stream?

Have you checked the expression encoder? I have not used it myself, but one of the ways to get it looks like this :)