The IESG has approved the following document: - 'RTP/RTCP extension for RTP Splicing Notification' (draft-ietf-avtext-splicing-notification-09.txt) as Proposed Standard This document is the product of the Audio/Video Transport Extensions Working Group. The IESG contact persons are Alexey Melnikov, Ben Campbell and Alissa Cooper. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-avtext-splicing-notification/ Technical Summary Content splicing is a process that replaces the content of a main multimedia stream with other multimedia content, and delivers the substitutive multimedia content to the receivers for a period of time. The splicer is designed to handle RTP splicing and needs to know when to start and end the splicing. This memo defines two RTP/RTCP extensions to indicate the splicing related information to the splicer: an RTP header extension that conveys the information in-band and an RTCP packet that conveys the information out-of-band. Working Group Summary The document went through a working group last call. There were comments and the document was updated to resolve all comments. The use case of this work (multimedia streaming over RTP) is somewhat distant from the primary expertise of many AVTEXT working group participants, so a call was specifically put out to constituencies that would use the work in order to determine interest and correctness. A number of such constituencies responded that they were interested in the work. An IPR declaration was filed late, after the work had been accepted as a work item of the working group, from the employer of some of the document's authors. (The authors indicated that the IPR was from a different area of the company than the one they worked in.) The working group considered this and decided that this would not block going forward with the document. Document Quality The document got good reviews from several AVTEXT members. The document was reviewed by the SDP Directorate, and changes were made following the comments that were received. There are reports that at least one vendor has begun field trials of the mechanism. Personnel The Document Shepherd is Jonathan Lennox; the Responsible Area Director is Ben Campbell. IESG Note This version has normative downrefs to RFC 7201 and RFC 7667, that were added as a result of IETF last call. We ran a second, abbreviated last call that explicitly called out the downrefs and received no objections.
