Videoconferencing

I’ve searched and searched but I’ve not found nothing about it.
This is all that I know:
-the meetme command supports the ‘v’ option, so it seems it’s possible to make a videoconference;
-Asterisk supports h261 and h263p
-I’m able to do a normal video call using mirial or another simple softhphone that uses VIC

And this is what I’like to know:

  • is there anyone in the big and fantastic asterisk-world making videoconference?
    -in the case it is possoble, suppose that asterisk receives n video-streams from n-different users, than asterisk sends only one mixed video-stream, or it sends to each user n-1 different video-streams? I want to say: does the meetme command make video mixing (as for the audio) or not?

Thanks in advance,
C.