ISO/IEC 23008-1:2017
(Main)Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 1: MPEG media transport (MMT)
Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 1: MPEG media transport (MMT)
ISO/IEC 23008-1:2017 specifies MPEG media transport (MMT) technologies, which include a single encapsulation format, delivery protocols and signalling messages for transport and delivery of multimedia data over heterogeneous packet-switched networks for multimedia services. Types of packet-switched networks supported by this document include bidirectional networks such as Internet Protocol (IP) networks and unidirectional networks such as digital broadcast networks (which may or may not use the IP). The technologies specified by this document belong to one of three functional areas of MMT: media processing unit (MPU) format, signalling messages and delivery protocol. The MPU format specifies the "mpuf" branded ISO-based media file format (ISOBMFF) encapsulating both timed and non-timed media contents. The MPU format is a self-contained ISOBMFF structure enabling independent consumption of media data, which hides codec-specific details from the delivery function. The signalling functional area specifies the formats of signalling messages carrying information for managing media content delivery and consumption, e.g. specific media locations and delivery configuration of media contents. The delivery functional area specifies the payload formats that are independent of media and codec types, which allow fragmentation and aggregation of contents encapsulated as specified by this document for delivery using packet-switched oriented transport protocols. The delivery functional area also provides an application layer transport protocol that allows for advanced delivery of media contents.
Technologies de l'information — Codage à haute efficacité et livraison des medias dans des environnements hétérogènes — Partie 1: Transport des médias MPEG
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INTERNATIONAL ISO/IEC
STANDARD 23008-1
Second edition
2017-08
Information technology — High
efficiency coding and media delivery
in heterogeneous environments —
Part 1:
MPEG media transport (MMT)
Technologies de l’information — Codage à haute efficacité et livraison
des medias dans des environnements hétérogènes —
Partie 1: Transport des médias MPEG
Reference number
ISO/IEC 23008-1:2017(E)
©
ISO/IEC 2017
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ISO/IEC 23008-1:2017(E)
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ISO/IEC 23008-1:2017(E)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 4
4 Conventions . 6
5 Overview . 6
6 MMT data model . 9
6.1 General . 9
6.2 Package .10
6.3 Asset .10
6.4 Media processing unit (MPU) .11
6.5 Asset delivery characteristics.12
6.5.1 General.12
6.5.2 ADC descriptors .12
6.5.3 Syntax .13
6.5.4 Semantics .14
6.6 Bundle delivery characteristics .15
6.6.1 General.15
6.6.2 BDC descriptors .15
6.6.3 Syntax .15
6.6.4 Semantics .16
7 ISOBMFF-based MPU .17
7.1 General .17
7.2 MPU brand definition .18
7.3 MPU box .19
7.3.1 Definition .19
7.3.2 Syntax .20
7.3.3 Semantics .20
8 MMT hint track .21
8.1 General .21
8.2 Sample description format .21
8.2.1 Definition .21
8.2.2 Syntax .21
8.2.3 Semantics .21
8.3 Sample format .22
8.3.1 Definition .22
8.3.2 Syntax .22
8.3.3 Semantics .22
9 Packetized delivery of Package .23
9.1 General .23
9.2 MMT protocol .24
9.2.1 General.24
9.2.2 Structure of an MMTP packet .25
9.2.3 Semantics .26
9.2.4 MMTP session description information.29
9.3 MMTP payload .29
9.3.1 General.29
9.3.2 MPU mode .30
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ISO/IEC 23008-1:2017(E)
9.3.3 Generic file delivery mode .32
9.3.4 Signalling message mode.37
9.4 MMTP operation .38
9.4.1 General.38
9.4.2 Delivering MPUs .38
9.4.3 Delivering generic objects .40
9.4.4 Header compression for MMTP packet .43
10 Signalling .45
10.1 General .45
10.2 Signalling message format .46
10.2.1 General.46
10.2.2 Syntax .47
10.2.3 Semantics .47
10.3 Signalling messages for Package consumption .47
10.3.1 General.47
10.3.2 PA message .48
10.3.3 MPI message .49
10.3.4 MPT message .51
10.3.5 CRI message .51
10.3.6 DCI message .52
10.3.7 PA table .53
10.3.8 MPI table .54
10.3.9 MP table .57
10.3.10 CRI table .60
10.3.11 DCI table .61
10.3.12 SSWR message .63
10.3.13 LS message .64
10.3.14 LR message .65
10.3.15 SI table .66
10.4 Signalling messages for Package delivery.70
10.4.1 General.70
10.4.2 Hypothetical receiver buffer model (HRBM) message .71
10.4.3 Measurement configuration (MC) message .72
10.4.4 ARQ configuration (AC) message.74
10.4.5 ARQ feedback (AF) message .75
10.4.6 Reception quality feedback (RQF) message .78
10.4.7 NAM feedback (NAMF) message .80
10.4.8 Low delay consumption (LDC) message .82
10.4.9 HRBM removal message .83
10.4.10 ADC message .84
10.5 Descriptors .87
10.5.1 CRI descriptor .87
10.5.2 MPU timestamp descriptor .88
10.5.3 Dependency descriptor .89
10.5.4 GFDT descriptor .90
10.5.5 SI descriptor . . .92
10.6 Syntax element groups .93
10.6.1 MMT_general_location_info .93
10.6.2 asset_id .96
10.6.3 Identifier mapping .96
10.6.4 mime_type .98
10.7 ID and tags values .98
11 Hypothetical receiver buffer model (HRBM) .100
11.1 General .100
11.2 FEC decoding buffer .101
11.3 De-jitter buffer .101
11.4 MMTP packet decapsulation buffer .102
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ISO/IEC 23008-1:2017(E)
11.5 Usage of HRBM .102
11.6 Estimation of end-to-end delay and buffer requirement .102
11.7 HRBM signalling.103
12 Cross layer interface (CLI) .103
12.1 General .103
12.2 Cross layer information .103
12.2.1 General.103
12.2.2 Top-down QoS information .103
12.2.3 Bottom-up QoS information .103
12.2.4 Network abstraction for media (NAM) .104
12.2.5 Syntax .104
12.2.6 Semantics .105
Annex A (informative) Jitter calculation in MMTP .106
Annex B (normative) XML syntax and MIME type for signalling message .107
Annex C (normative) AL-FEC framework for MMT .114
Annex D (informative) QoS management model for MMT .139
Annex E (informative) Operation of downloadable DRM and CAS .141
Annex F (informative) DASH segment over MMTP .142
Annex G (normative) Scheme of MMT URI .145
Bibliography .146
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ISO/IEC 23008-1:2017(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This second edition cancels and replaces the first edition (ISO/IEC 23008-1:2014), which has been
technically revised. It also incorporates the Amendment ISO/IEC 23008-1:2014/Amd 1:2015 and the
Technical Corrigendum ISO/IEC 23008-1:2014/Cor 1:2015.
The main changes compared to the previous edition are as follows:
— editorial integration of ISO/IEC 23008-1:2014/Amd 1:2015, ISO/IEC 23008-1:2014/FDAmd 2,
ISO/IEC 23008-1:2014/Cor 1:2015 and ISO/IEC 23008-1:2014/CD COR 2;
— minor editorial corrections (for example, numbering in Tables and Figures).
A list of all parts in the ISO/IEC 23008 series can be found on the ISO website.
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ISO/IEC 23008-1:2017(E)
Introduction
This document specifies the MPEG media transport (MMT) technologies for the transport and delivery
of coded media data for multimedia services over heterogeneous packet-switched networks including
internet protocol (IP) networks and digital broadcasting networks. In this document, “coded media
data” includes both timed audiovisual media data and non-timed data.
MMT is designed under the assumption that the coded media data will be delivered over a packet-
switched delivery network. Several characteristics of such delivery environment, such as non-constant
end-to-end delay of each packet from the sending entity to the receiving entity, have been taken into
consideration.
For efficient and effective delivery and consumption of coded media data over packet-switched delivery
networks, this document provides the following elements:
— the logical model to construct contents composed of components from various sources, for example,
components of mash-up applications;
— the formats to convey information about the coded media data, to enable delivery layer processing,
such as packetization;
— the packetization method and the structure of the packet to deliver media content over packet-
switched networks supporting media and coding independent hybrid delivery over multiple
channels;
— the format of
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