Hi.

I don't attempt to learn everything on XMPP/GoogleTalk in one post. The reason I'm posting here is to gather some good resources for viable solutions.

I'd like to build a video calling application, and eliminate the need to sign up for service. Users will instantly connect by sharing a groupID. Users will not be tied to accounts - their webcams' unique USB serial number will be tied to an account.

Here are a few questions for those of you who are familiar with GoogleTalk service and XMPP (and multimedia protocols in general): - It looks like GoogleTalk platform provides authentication, presence, call signaling and buddy list management. Does it provide RTP reflection too? - GoogleTalk has implemented Audio with Jingle Audio. How different is video from audio session negotiation over XMPP? - How far does Google let developers use their service? Is there any limitation on bandwidth/connection? - Legality - can a commercial app use GoogleTalk service? - What else (that is not provided by GoogleTalk) shall I take into consideration for my video calling app?

I'm ready to learn, so bring it on! :-)

Thanks