The charter of the Audio/Video Transport (avt) working group in 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: avt-request@ietf.org Archive: www.ietf.org/mail-archive/working-groups/avt/current/maillist.html 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 advance the main RTP specification and RTP Profile for Audio and Video Conferences with Minimal Control for publication as full Internet Standards - 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 in the ULP and UXP payload formats - to extend RTP to work with Source-Specific Multicast sessions with unicast feedback - to provide a framing mechanism for RTP over TCP and TLS - to review the applicability of Compressed RTP operation on MPLS networks, developing extensions as necessary - to develop a new RTP profile as the combination of the SRTP profile and the Extended RTP Profile for RTCP-based Feedback (RTP/SAVPF) The group will also coordinate with the DCCP working group to ensure that RTP can be efficiently transported over DCCP. 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. Milestones: Oct 2003 Review DCCP including prototypes and API; feedback to DCCP WG Nov 2003 Initial draft requirements for ECRTP over MPLS; discuss with MPLS WG Dec 2003 Submit UXP Payload Format for Proposed Standard Dec 2003 Submit ULP Payload Format for Proposed Standard Dec 2003 Submit RTCP/SSM draft for Proposed Standard Dec 2003 Submit iLBC codec specification for Experimental Dec 2003 Submit iLBC payload format for Proposed Standard Jan 2004 Advance RTP specification and A/V profile to Full Standard Mar 2004 Submit Framing of RTP for TCP and TLS for Proposed Standard Mar 2004 Identify payload formats to classify as Historic Mar 2004 Finish requirements for ECRTP over MPLS; recharter for subsequent work Jul 2004 Submit RTP/SAVPF profile for Proposed Standard Jul 2004 Begin update of SRTP profile for Draft Standard RFC Jul 2004 Begin update of RTP/AVPF profile for Draft Standard RFC Aug 2004 Consider update of RTP MIB Nov 2004 Collect SRTP implementation reports Nov 2004 Collect RTP/AVPF implementation reports Mar 2005 Submit SRTP for Draft Standard Mar 2005 Submit RTP/AVPF for Draft Standard
