The charter of the Audio/Video Transport (avt) working group in the Transport Area of the IETF has been updated. For additional information, please contact the Area Directors or the working group Chairs. +++ Audio/Video Transport (avt) ============================ Current Status: Active Working Group Chair(s): Colin Perkins <csp@csperkins.org> Magnus Westerlund <magnus.westerlund@ericsson.com> Transport Area Director(s): Allison Mankin <mankin@psg.com> Jon Peterson <jon.peterson@neustar.biz> Transport Area Advisor: Allison Mankin <mankin@psg.com> Mailing Lists: General Discussion: avt@ietf.org To Subscribe: https://www1.ietf.org/mailman//listinfo/avt Archive: http://www.ietf.org/mail-archive/web/avt/index.html Description of Working Group: The Audio/Video Transport Working Group was formed to specify a protocol for real-time transmission of audio and video over unicast and multicast UDP/IP. This is the Real-time Transport Protocol, RTP, together with its associated profiles and payload formats. The current aims of the working group are: - to review and revise existing payload formats to advance those which are useful to Draft Standard, and to declare others as Historic. Milestones will be established as a champion for each payload format is identified. - to develop payload formats for new media codecs, and to document best-current practices in payload format design. The group continues to be precluded from work on codecs themselves because of overlap with the other standards bodies, and because the IETF does not have the ability to effectively review new codecs. An exception was made for the freeware iLBC codec on a highly experimental basis, but acceptance of new codec work is unexpected and subject to rechartering. - to complete the forward error correction work to update RFC 2733 in the form of the ULP payload format - to investigate and if suitable develop a framework for advanced FEC codes and their usage for RTP, possibly with alignment to the RMT WG's FEC building block. - to extend RTP to work with Source-Specific Multicast sessions with unicast feedback - to provide a framing mechanism for RTP over TCP and TLS - in collaboration with the MPLS and ROHC WGs, to develop a solution for header compression of RTP across MPLS networks that avoid decompression and compression at each MPLS node. - to develop a new RTP profile as the combination of the SRTP profile and the Extended RTP Profile for RTCP-based Feedback (RTP/SAVPF) - to develop a new RTP profile for usage of TFRC (RFC 3448) with RTP over UDP to allow application developers to gain experience with TCP friendly congestion control. - to develop a MIB for RTCP XR (RFC 3611). - to update the RTP MIB, including aligning it with RFC 3550. The longer term goals of the working group are to advance the SRTP Profile, the Extended RTP Profile for RTCP-based Feedback, the Compressed RTP framework, and the RTP MIB to Draft Standard. The group has no plans to develop new RTP profiles beyond those listed above, but will consider rechartering to produce profile level extensions if appropriate. Goals and Milestones: Done Review DCCP including prototypes and API; feedback to DCCP WG Done Initial draft requirements for ECRTP over MPLS; discuss with MPLS WG Done Submit iLBC payload format for Proposed Standard Done Submit iLBC codec specification for Experimental Done Advance RTP specification and A/V profile to Full Standard Sep 05 Submit RTP/SAVPF profile for Proposed Standard Sep 05 Submit RTCP/SSM draft for Proposed Standard Nov 05 Submit ULP Payload Format for Proposed Standard Nov 05 Finished investigation of advanced FEC codes for RTP, update plan Nov 05 Submit update of RTP MIB for Proposed or Draft Standard Nov 05 Submit Framing of RTP for TLS for Proposed Standard Nov 05 Submit RTP Profile for TFRC for Proposed Standard Nov 05 Submit RTCP XR MIB for Proposed Standard Dec 05 Submit any extensions for RTP HC on MPLS networks for Proposed Standard Mar 06 Submit SRTP for Draft Standard Sep 06 Submit RTP/AVPF for Draft Standard _______________________________________________ IETF-Announce@ietf.org https://www1.ietf.org/mailman/listinfo/ietf-announce
