The Audio/Video Transport (avt) working group in the Real-time Applications and Infrastructure Area of the IETF has been rechartered. For additional information, please contact the Area Directors or the working group Chairs. Audio/Video Transport (avt) --------------------------------------------------- Current Status: Active Working Group Chair(s): * Roni Even <even.roni@huawei.com> * Tom Taylor <tom111.taylor@bell.net> Real-time Applications and Infrastructure Area Director(s): * Robert Sparks <rjsparks@nostrum.com> * Cullen Jennings <fluffy@cisco.com> Real-time Applications and Infrastructure Area Advisor: * Robert Sparks <rjsparks@nostrum.com> Mailing Lists: General Discussion: avt@ietf.org To Subscribe: https://www.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, along with its associated profiles and payload formats. RTP itself has been shepherded to Full Standard. Its associated profiles, extensions, and payload formats are currently at various levels of stardards maturity. This working group's current work centers in four areas: 1) Maintenance of the core RTP/RTCP protocols and the AVP, SAVP, AVPF, and SAVPF profiles 2) Specification and maintenance of payload formats for use with RTP 3) Specification of metric blocks for use with the RTCP Extended Report (XR) framework 4) Extensions to the core protocols to facilitate joining, synchronizing, control, and monitoring of RTP multimedia sessions In these areas, the group is chartered to focus on the following tasks. Work supporting those areas, but not reflected in these tasks must not be accepted by the working group without an explicit re-chartering. In particular, new items supporting the fourth area are expected to be reviewed in DISPATCH before being considered new charter items for this group. 1) Maintenance of the core RTP/SRTP/RTCP protocols and the AVP, SAVP, AVPF, and SAVPF profiles - maintain and enhance the SRTP Profile, with review and input from the Security Area - specify how to use Explicit Congestion Notification (ECN) with RTP/RTCP - continue to investigate the export of summarized RTP/RTCP information for operations and monitoring purposes 2) Specification and maintenance of payload formats for use with RTP - provide guidelines for payload format design - develop payload formats for new media codecs - review and revise existing payload formats to advance those which are useful to Draft Standard or Standard, and to declare others as Historic. 3) Specification of metric blocks for use with the RTCP Extended Report (XR) framework - provide a mechanism allowing identification data for a set of related metric reports to be carried separately and identified in those reports by reference - provide report blocks for delay, delay variation, and discard - provide report blocks for burst/gap discard and loss - provide report blocks supporting rapid synchronization of multiple RTP streams - provide report blocks for jitter buffer metrics - provide report blocks for loss concealment metrics 4) Extensions to the core protocols to facilitate joining, synchronizing, control, and monitoring of RTP multimedia sessions - develop tools to support rapid acquisition of multimedia streams - specify necessary extensions to support rapid synchronization of multiple RTP streams Goals and Milestones: Maintenance of the core RTP/RTCP protocols and the AVP, SAVP, AVPF, and SAVPF profiles Jan-10 Submit draft explaining why SRTP need not be mandatory for media transport, for Informational Jan-10 Policy for Registering SRTP Transforms for Proposed Standard Feb-10 Submit Port Mapping Between Unicast and Multicast RTP Sessions for Proposed Standard Mar-10 Submit Guidelines for Extending the RTP Control Protocol (RTCP) for Informational Mar-10 Submit Monitoring Architecture for RTP for Informational Apr-10 Submit in band keying mechanism for SRTP draft for Proposed Standard May-10 Submit Real-Time Transport Control Protocol (RTCP) in Overlay Multicast for Proposed Standard May-10 Submit Explicit Congestion Notification (ECN) for RTP over UDP for Proposed Standard Nov-10 Encryption of Header Extensions in the Secure Real-Time Transport Protocol (SRTP) for Proposed Standard Specification and maintenance of payload formats for use with RTP Jan-10 Submit RTP Payload Format for H.264 RCDO Video for Proposed Standard Jan-10 RTP Payload Format for GSM-HR for Proposed Standard Jan-10 RTP Payload Format for DRA Audio for Informational Feb-10 Submit RTP Payload Format for SVC Video for Proposed Standard Feb-10 Submit How to Write an RTP Payload Format for Informational Mar-10 Submit RTP Payload Format for DV (IEC 61834) Video for Proposed Standard Mar-10 Submit EVBR/G.718 payload draft for Proposed Standard Mar-10 RTP Payload Format for MPEG2-TS preamble for Proposed Standard Mar-10 RTP Payload Format for MPEG-4 Audio/Visual Streams for Proposed Standard Apr-10 RTP Payload Format for Enhanced Variable Rate Narrowband- Wideband Codec (EVRC-NW) for Proposed Standard Apr-10 RTP Payload Format for Bluetooth's SBC audio codec for Proposed Standard Apr-10 RTP Payload Format for the iSAC codec for Proposed Standard Sep-10 RTP Payload Format for the CELT codec for Proposed Standard Sep-10 RTP Payload Format for the APTX codec for Proposed Standard Sep-10 RTP profile for the carriage of SMPTE 336M data for Proposed Standard Oct-10 RTP Payload Format for MVC Video for Proposed Standard Dec-10 Submit RTP Payload Format for MIDI for Proposed Standard Specification of metric blocks for use with the RTCP Extended Report (XR) framework Feb-10 Submit Multicast Acquisition Report Block Type for RTCP XR Mar-10 Submit RTCP XR Report Block for Measurement Identity Apr-10 Submit RTCP XR Report Block for Burst/Gap Discard metric Reporting Apr-10 Submit RTCP XR Report Block for Burst/Gap Loss metric Reporting Apr-10 Submit RTCP XR Report Block for Concealed Seconds metric Reporting Apr-10 Submit RTCP XR Report Block for Delay metric Reporting Apr-10 Submit RTCP XR Report Block for Discard metric Reporting Apr-10 Submit RTCP XR Report Block for Jitter Buffer Metric Reporting Apr-10 Submit RTCP XR Report Block for Loss Concealment metric Reporting Apr-10 Submit RTCP XR Report Block for Packet Delay Variation Metric Reporting Apr-10 Submit Real-time Transport Control Protocol Extension Report for Run Length Encoding of Discarded Packets Apr-10 Submit RTCP XR Report Block for QoE Metrics Reporting Extensions to the core protocols to facilitate joining, synchronizing, control, and monitoring of RTP multimedia Jan-10 Submit Unicast-Based Rapid Acquisition of Multicast RTP Sessions for Proposed Standard Jan-10 Submit Rapid Synchronization of RTP Flows for Proposed Standard Jan-10 Submit Forward-shifted RTP Redundancy Payload Support for Proposed Standard Apr-10 Submit Considerations for RAMS Scenarios for Informational _______________________________________________ IETF-Announce mailing list IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
