Subject: Protocol Action: 'RTP Payload Format for Flexible Forward Error Correction (FEC)' to Proposed Standard (draft-ietf-payload-flexible-fec-scheme-20.txt)

From: The IESG <[email-masked]>
Date: Mon, 20 May 2019 15:30:28 -0700

The IESG has approved the following document:
- 'RTP Payload Format for Flexible Forward Error Correction (FEC)'
  (draft-ietf-payload-flexible-fec-scheme-20.txt) as Proposed Standard

This document is the product of the Audio/Video Transport Payloads Working
Group.

The IESG contact persons are Adam Roach, Alexey Melnikov and Barry Leiba.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-payload-flexible-fec-scheme/

Technical Summary:

This document defines new RTP payload formats for the Forward Error Correction (FEC) packets that are generated by the non-interleaved  and interleaved parity codes from source media encapsulated in RTP.   These parity codes are systematic codes, where a number of FEC repair packets are generated from a set of source packets from one or more source RTP streams.  These FEC repair packets are sent in a redundancy RTP stream separate from the source RTP stream(s) that  carries the source packets.  RTP source packets that were lost in   transmission can be reconstructed using the source and repair packets that were received.  The non-interleaved and interleaved parity codes   which are defined in this specification offer a good protection against random and bursty packet losses, respectively, at a cost of decent complexity. 

Working Group Summary:

The document was discussed in the meetings, and on the mailing list. The open issues were addressed and there are no open issues; there was consensus on the content of the document.

Document Quality:

The payload was developed by members from different vendors and is part of the RTCWEB deliveries. Magnus Westerlund and Steve Botzko did a thorough review of the document.
A request for a media type review was sent to ietf-types and media-types mailing lists.

Personnel:

Roni Even is the Document Shepherd.
The responsible AD is Ben Campbell.