[AVTCORE] RTP Simulcast proposal has been updated
Magnus Westerlund <magnus.westerlund@ericsson.com> Thu, 24 October 2013 07:20 UTC
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Date: Thu, 24 Oct 2013 09:21:00 +0200
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Subject: [AVTCORE] RTP Simulcast proposal has been updated
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WG, My co-authors and I have updated the proposal for how to do Simulcast in RTP so that it supports Unified Plan for SDP. Thus we can support single media source per media description with multiple simulcast encodings. It also support multiple sources per media description for broadcast/simulcast as well as "legacy" usages where the simulcast encoding versions are distributed across different media descriptions in SDP. Thus simulcast within one as well as using multiple RTP sessions (and thus transports) are supported. This update also focuses the SRCNAME SDES item proposal to the need of simulcast. SRCNAME is used to identify the relationship between an SSRC and the media source and particular encoding carried. To speed up acquisition we are proposing an generic SDES item RTP Header extension to enable inclusion of the SRCNAME item in RTP headers at startup. The proposal consists of three I-Ds and we will discuss the general signalling and setup/negotiation in MMUSIC and the SRCNAME and the header extension is requested to be presented in AVTEXT WG. https://datatracker.ietf.org/doc/draft-westerlund-avtcore-transport-multiplexing/ https://datatracker.ietf.org/doc/draft-westerlund-avtext-sdes-hdr-ext/ https://datatracker.ietf.org/doc/draft-westerlund-avtext-rtcp-sdes-srcname/ Feedback much appreciated Cheers Magnus Westerlund ---------------------------------------------------------------------- Multimedia Technologies, Ericsson Research EAB/TVM ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Färögatan 6 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden| mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [AVTCORE] RTP Simulcast proposal has been updated Magnus Westerlund