well ... some sort of codec info and session info should be negotiated upon, i.e. is it a high bandwidth media, a user wants to transmit or recieve or is the media exchange suitable for modem users?And the stream comes with some unknown codec inside. There is need for
some protocol to negotiate what codecs or other parameters should be used.
Umm..
Err..
When utilizing RTP, a select few packets come in that are known as RTCP packets. They contain minimal control information, including, *TADA* the encoding format..
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of course a media session should contain some informations about the type of media, i.e. video or audio, we can't negotiate a session without even knowing what type of session we will negotiate, i.e. do i want to talk to you or do i want to see you?
but basically, what comes through is the split between media session (RTP based) and control session (XMPP based).
u
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