ISO/IEC 23008-1:2023
(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)
This document 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
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 23008-1
Third edition
2023-01
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 23008-1:2023(E)
© ISO/IEC 2023
---------------------- Page: 1 ----------------------
ISO/IEC 23008-1:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO/IEC 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 23008-1:2023(E)
Contents Page
Foreword ......................................................................................................................................................................................................................................vii
Introduction ...........................................................................................................................................................................................................................viii
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 .......................................................................................................................................................................................................... 9
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 ........................................................................................................................................... ............................................. 19
7.3.3 Semantics ............................................................................................................................................................................... 20
8 MMT hint track ...................................................................................................................................................................................................20
8.1 General ........................................................................................................................................................................................................ 20
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 ...................................................................................................................................................................................... 21
8.3.1 Definition ............................................................................................................................................................................... 21
8.3.2 Syntax ........................................................................................................................................... ............................................. 21
8.3.3 Semantics ............................................................................................................................................................................... 22
9 Packetized delivery of Package .........................................................................................................................................................23
9.1 General ........................................................................................................................................................................................................23
9.2 MMT protocol ....................................................................................................................................................................................... 23
9.2.1 General .....................................................................................................................................................................................23
9.2.2 Structure of an MMTP packet .............................................................................................................................. 24
9.2.3 Semantics ............................................................................................................................................................................... 25
9.2.4 MMTP session description information .....................................................................................................29
9.3 MMTP payload .....................................................................................................................................................................................29
9.3.1 General .....................................................................................................................................................................................29
9.3.2 MPU mode .............................................................................................................................................................................. 30
iii© ISO/IEC 2023 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/IEC 23008-1:2023(E)
9.3.3 Generic file delivery mode ...................................................................................................................................... 32
9.3.4 Signalling message mode ......................................................................................................................................... 36
9.4 MMTP operation ................................................................................................................................................................................ 37
9.4.1 General ..................................................................................................................................................................................... 37
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 ........................................................................................................................................................ 45
10.2.1 General ..................................................................................................................................................................................... 45
10.2.2 Syntax ........................................................................................................................................................................................ 45
10.2.3 Semantics ...............................................................................................................................................................................46
10.3 Signalling messages for Package consumption ......................................................................................................46
10.3.1 General .....................................................................................................................................................................................46
10.3.2 PA message ........................................................................................................................................................................... 47
10.3.3 MPI message ........................................................................................................................................................................48
10.3.4 MPT message ......................................................................................................................................................................49
10.3.5 CRI message .........................................................................................................................................................................50
10.3.6 DCI message ......................................................................................................................................................................... 51
10.3.7 PA table .................................................................................................................................................................................... 52
10.3.8 MPI table ................................................................................................................................................................................. 53
10.3.9 MP table ................................................................................................................................................................................... 56
10.3.10 CRI table .................................................................................................................................................................................. 59
10.3.11 DCI table ..................................................................................................................................................................................60
10.3.12 Layout Configuration Table ................................................................................................................................... 61
10.3.13 SSWR message...................................................................................................................................................................63
10.3.14 LS message ............................................................................................................................................................................64
10.3.15 LR message ...........................................................................................................................................................................65
10.3.16 SI table ......................................................................................................................................................................................66
10.4 Signalling messages for Package delivery ................................................................................................................... 70
10.4.1 Hypothetical receiver buffer model (HRBM) message ................................................................. 70
10.4.2 Measurement configuration (MC) message ............................................................................................ 71
10.4.3 ARQ configuration (AC) message .....................................................................................................................73
10.4.4 ARQ feedback (AF) message ..................................................................................................................................74
10.4.5 Reception quality feedback (RQF) message ...........................................................................................77
10.4.6 NAM feedback (NAMF) message ....................................................................................................................... 79
10.4.7 Low delay consumption (LDC) message ....................................................................................................81
10.4.8 Hypothetical receiver buffer model (HRBM) removal message ...........................................82
10.4.9 ADC message .......................................................................................................................................................................84
10.4.10 NAT_Keepalive (NK) message .............................................................................................................................87
10.4.11 Media Resource Identification (MRI) message ....................................................................................88
10.4.12 Consumption reporting (CR) message .........................................................................................................90
10.4.13 Distributed Resource Identification (DRI) message ....................................................................... 91
10.4.14 Distributed Signaling Information (DSI) message ............................................................................94
10.4.15 Bandwidth Probing reQuest (BPQ) message .........................................................................................97
10.4.16 Bandwidth Probing Response (BPR) message .....................................................................................98
10.4.17 Pacing Buffer Removal Rate (PRR) message .......................................................................................100
10.4.18 Pacing Buffer Status Feedback (PSF) message.................................................................................. 101
10.4.19 Cell congestion information messages .....................................................................................................102
10.4.20 MMT Transition Request (MTR) message .............................................................................................103
10.4.21 MMT Transition Notification (MTN) message ...................................................................................105
10.4.22 Asset Change Request (ACR) message ......................................................................................................109
10.4.23 CMAF Presentation Description (CPD) Messages ...........................................................................112
10.4.24 Content Selection (CS) Message ......................................................................................................................113
10.4.25 RTSP message ................................................................................................................................................................. 114
10.4.26 VAST/VMAP Message ...............................................................................................................................................115
10.4.27 Service List (SL) information message ..................................................................................................... 117
© ISO/IEC 2023 – All rights reserved---------------------- Page: 4 ----------------------
ISO/IEC 23008-1:2023(E)
10.5 Descriptors........................................................................................................................................................................................... 119
10.5.1 CRI descriptor ................................................................................................................................................................. 119
10.5.2 MPU timestamp descriptor ................................................................................................................................. 119
10.5.3 Dependency descriptor ................................... ........................................................................................................120
10.5.4 GFDT descriptor ............................................................................................................................................................121
10.5.5 SI descriptor .....................................................................................................................................................................123
10.5.6 MMT Service Descriptor ........................................................................................................................................124
10.5.7 Mobile information descriptor .........................................................................................................................127
10.5.8 Media quality descriptor .......................................................................................................................................128
10.5.9 MPU Presentation Region Descriptor ........................................................................................................129
10.5.10 Asset Group Descriptor ..........................................................................................................................................130
10.5.11 Access Network Descriptor ................................................................................................................................131
10.5.12 Subtitle Change descriptor ..................................................................................................................................132
10.5.13 AT descriptor ...................................................................................................................................................................135
10.6 Syntax element groups ..............................................................................................................................................................136
10.6.1 MMT_general_location_info ...............................................................................................................................136
10.6.2 asset_id .................................................................................................................................................................................139
10.6.3 Identifier mapping ......................................................................................................................................................139
10.6.4 MIME type .......................................................................................................................................................................... 141
10.7 ID and tags values .......................................................................................................................................................................... 141
11 Hypothetical receiver buffer model (HRBM) ................................................................................................................. 144
11.1 General .....................................................................................................................................................................................................144
11.2 FEC decoding buffer .....................................................................................................................................................................144
11.3 De-jitter buffer .................................................................................................................................................................................. 145
11.4 MMTP packet decapsulation buffer ............................................................................................................................... 145
11.5 Usage of HRBM .................................................................................................................................................................................146
11.6 Estimation of end-to-end delay and buffer requirement ............................................................................146
11.7 HRBM signalling ..............................................................................................................................................................................146
11.8 HRBM with pacing buffer ........................................................................................................................................... .............146
12 Cross layer interface (CLI) ...................................................................................................................................................................147
12.1 General ..................................................................................................................................................................................................... 147
12.2 Cross layer information ............................................................................................................................................................ 147
12.2.1 General .................................................................................................................................................................................. 147
12.2.2 Top-down QoS information ................................................................................................................................. 147
12.2.3 Bottom-up QoS information ............................................................................................................................... 147
12.2.4 Network abstraction for media (NAM) .................................................................................................... 147
12.2.5 Syntax ........................................................................................................................................... ..........................................148
12.2.6 Semantics ............................................................................................................................................................................148
13 MMTP Session Setup and Control over Unicast ............................................................................................................ 149
13.1 Session Description for MMTP ........................................................................................................................................... 149
13.1.1 MMTP Protocol Identifier .....................................................................................................................................150
13.1.2 Object Flow Semantics ............................................................................................................................................150
13.1.3 Object Flow Descriptors ........................................................................................................................................150
13.1.4 SDP Syntax Examples ...............................................................................................................................................151
13.2 RTSP ...........................................................................................................................................................................................................151
13.2.1 General ...............................................................................................................................................................
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.