Hi
We already have video conferencing, whiteboard, slide shows streaming and more in our Beehive tool. It is an integration of Macromedia Communiation Server with dotlrn using IMS LD.
It would be easy to add video delivery.
We need a partner willing to put in some cash before we can release it as open source.
You can learn more about it at:
http://www.weg.ee.usyd.edu.au/projects/beehive/
I strongly recommend you see the multimedia animations.
cheers
Rafael
