Hello,
I would like to understand different kinds of video conferencing scenarios. In a video conference the video can be mixed or switched or some thing else?. I am looking for a document pointer if any to understand the differences. Different sources pointed below have provided some information. But I am specifically interested about RTP/RTCP behavior in a video conference.
Regards
Krishna
Background:
I would like to understand the relation between mixing and conferencing. I don't think they are interchangeable terms.
My understanding is mixing is one way to achieve a conferencing. So I consider conferencing to be a super set. Mixing is one operation depending on the media type.
I would like to understand this to know the RTP/RTCP behavior if media is carried with RTP. If there is a messaging conference with MSRP that is not mixing.
RFC 3550 defines the concept of mixing and it describes RTP and RTCP behavior. So if we say some thing is mixing I would like to see the implementation of RTP and RTCP is according to RFC 3550.
In Section 4.1 of RFC 4597 there is some information about video mixing scenario. So this can be treated as mixing according to RFC 3550.
In section 4.2 of RFC 4597 there is a video conferencing scenario. I guess this is not a mixing.
http://tools.ietf.org/html/draft-ietf-mediactrl-mixer-control-package-00 defines video-layout and video-switch. I think video-layout is mixing and video-switch is not mixing.
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Audio/Video Transport Working Group
