RTP/RTCP Extension for RTP Splicing Notification
RFC 8286
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RFC - Proposed Standard
(October 2017; No errata)
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Last updated |
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2018-12-20
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Replaces |
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draft-xia-avtext-splicing-notification
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IETF
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plain text
pdf
html
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
(wg milestone:
Nov 2015 - Submit Mechanism for...
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Document shepherd |
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Jonathan Lennox
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Shepherd write-up |
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Show
(last changed 2015-10-20)
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IESG state |
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RFC 8286 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Ben Campbell
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Send notices to |
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(None)
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) J. Xia
Request for Comments: 8286 R. Even
Category: Standards Track R. Huang
ISSN: 2070-1721 Huawei
L. Deng
China Mobile
October 2017
RTP/RTCP Extension for RTP Splicing Notification
Abstract
Content splicing is a process that replaces the content of a main
multimedia stream with other multimedia content and that 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 RTP Control Protocol (RTCP)
packet that conveys the information out of band.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8286.
Xia, et al. Standards Track [Page 1]
RFC 8286 RTP Splicing Notification October 2017
Copyright Notice
Copyright (c) 2017 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................3
1.1. Terminology ................................................3
2. Overview ........................................................4
2.1. Overview of RTP Splicing ...................................4
2.2. Overview of Splicing Interval ..............................5
3. Conveying Splicing Interval in RTP/RTCP Extensions ..............7
3.1. RTP Header Extension .......................................7
3.2. RTCP Splicing Notification Message .........................8
4. Reducing Splicing Latency ......................................10
5. Failure Cases ..................................................11
6. Session Description Protocol (SDP) Signaling ...................12
6.1. Declarative SDP ...........................................12
6.2. Offer/Answer without BUNDLE ...............................13
6.3. Offer/Answer with BUNDLE: All Media Are Spliced ...........14
6.4. Offer/Answer with BUNDLE: A Subset of Media Are Spliced ...16
7. Security Considerations ........................................18
8. IANA Considerations ............................................19
8.1. RTCP Control Packet Types .................................19
8.2. RTP Compact Header Extensions .............................20
8.3. SDP Grouping Semantic Extension ...........................20
9. References .....................................................20
9.1. Normative References ......................................20
9.2. Informative References ....................................21
Acknowledgements ..................................................22
Authors' Addresses ................................................22
Xia, et al. Standards Track [Page 2]
RFC 8286 RTP Splicing Notification October 2017
1. Introduction
Splicing is a process that replaces some multimedia content with
other multimedia content and delivers the substitutive multimedia
content to the receivers for a period of time. In some predictable
splicing cases, e.g., advertisement insertion, the splicing duration
needs to be inside of the specific pre-designated time slot. Certain
timing information about when to start and end the splicing must be
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