RTP Payload for SMPTE ST 291-1 Ancillary Data
draft-ietf-payload-rtp-ancillary-12

Document Type Active Internet-Draft (payload WG)
Last updated 2017-11-02 (latest revision 2017-10-19)
Replaces draft-edwards-payload-rtp-ancillary
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Stream WG state Submitted to IESG for Publication (wg milestone: Mar 2016 - Submit RTP Payload F... )
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A/V Transport Payloads Working Group                          T. Edwards
Internet-Draft                                                       FOX
Intended status: Standards Track                        October 19, 2017
Expires: April 22, 2018

             RTP Payload for SMPTE ST 291-1 Ancillary Data
                  draft-ietf-payload-rtp-ancillary-12

Abstract

   This memo describes a real-time transport protocol (RTP) payload
   format for the Society of Motion Picture and Television Engineers
   (SMPTE) Ancillary data, as defined by SMPTE ST 291-1.  SMPTE
   Ancillary data is generally used along with professional video
   formats to carry a range of ancillary data types, including time
   code, Closed Captioning, and the Active Format Description (AFD).

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on April 22, 2018.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Edwards                  Expires April 22, 2018                 [Page 1]
Internet-Draft       RTP Payload for Ancillary Data         October 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  RTP Payload Format for SMPTE ST 291 Ancillary Data  . . . . .   3
     2.1.  Payload Header Definitions  . . . . . . . . . . . . . . .   5
   3.  Payload Format Parameters . . . . . . . . . . . . . . . . . .  10
     3.1.  Media Type Definition . . . . . . . . . . . . . . . . . .  11
   4.  SDP Considerations  . . . . . . . . . . . . . . . . . . . . .  13
     4.1.  Grouping ANC Streams with other Media Streams . . . . . .  14
   5.  Offer/Answer Model and Declarative Considerations . . . . . .  14
     5.1.  Offer/Answer Model  . . . . . . . . . . . . . . . . . . .  14
     5.2.  Declarative SDP Considerations  . . . . . . . . . . . . .  15
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  16
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  17
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  19

1.  Introduction

   This memo describes a real-time transport protocol (RTP) payload
   format for the Society of Motion Picture and Television Engineers
   (SMPTE) Ancillary data (ANC), as defined by SMPTE ST 291-1 [ST291].
   ANC data is transmitted in the ancillary space of serial digital
   video interfaces, the space outside of the active video region of
   images intended for users to view.  Ancillary space roughly
   corresponds to vertical and horizontal blanking periods of cathode
   ray tube type displays.  ANC can carry a range of data types,
   including time code, Closed Captioning, and the Active Format
   Description (AFD).

   ANC is generally associated with the carriage of metadata within the
   bit stream of a Serial Digital Interface (SDI), such as the standard
   definition (SD) Serial Digital Interface, the 1.5 Gb/s Serial Digital
   Interface for high definition (HD) television applications, or the 3
   Gb/s Signal/Data Serial Interface (SMPTE ST 259 [ST259], SMPTE ST
   292-1 [ST292], SMPTE ST 424 [ST424]).

   ANC data packet payload definitions for a specific application are
   specified by a SMPTE Standard, Recommended Practice, Registered
   Disclosure Document, or by a document generated by another
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