Serverless video-conferencing with Flash

[Maccaday]

Hi,

I'm looking to develop a flexible browser-based, video-conferencing package that doesn't require streaming all the video from a central server.

I know that browser-based video-conferencing packages are available for Flash, but all the ones I have come across require Macromedia's Communication Server. I would like to have a setup where video-conferencing could be done by logging into a server, and from then on all communications are made on a P2P level.

I have two questions regarding this idea:

1) Is it possible to send streamed Flash content from one client's webcam/headphone set to other client, both of whom are only using the Flash plugin? (The other client would need to make a request for the stream, which would be done through the connection to the cetnral server, but the stream itself would be sent directly to the client.)

2) Is it possible to multicast using Flash movies, so that the same stream can be sent to multiple clients simultaneously, or would this require a separate multicast server installation?

Thanks for your responses.