ISO/IEC 23008-1:2023
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.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Conventions
5 Overview
6 MMT data model
6.1 General
6.2 Package
6.3 Asset
6.4 Media processing unit (MPU)
6.5 Asset delivery characteristics
6.5.1 General
6.5.2 ADC descriptors
6.5.3 Syntax
6.5.4 Semantics
6.6 Bundle delivery characteristics
6.6.1 General
6.6.2 BDC descriptors
6.6.3 Syntax
6.6.4 Semantics
7 ISOBMFF-based MPU
7.1 General
7.2 MPU brand definition
7.3 MPU box
7.3.1 Definition
7.3.2 Syntax
7.3.3 Semantics
8 MMT hint track
8.1 General
8.2 Sample description format
8.2.1 Definition
8.2.2 Syntax
8.2.3 Semantics
8.3 Sample format
8.3.1 Definition
8.3.2 Syntax
8.3.3 Semantics
9 Packetized delivery of Package
9.1 General
9.2 MMT protocol
9.2.1 General
9.2.2 Structure of an MMTP packet
9.2.3 Semantics
9.2.4 MMTP session description information
9.3 MMTP payload
9.3.1 General
9.3.2 MPU mode
9.3.3 Generic file delivery mode
9.3.4 Signalling message mode
9.4 MMTP operation
9.4.1 General
9.4.2 Delivering MPUs
9.4.3 Delivering generic objects
9.4.4 Header compression for MMTP packet
10 Signalling
10.1 General
10.2 Signalling message format
10.2.1 General
10.2.2 Syntax
10.2.3 Semantics
10.3 Signalling messages for Package consumption
10.3.1 General
10.3.2 PA message
10.3.3 MPI message
10.3.4 MPT message
10.3.5 CRI message
10.3.6 DCI message
10.3.7 PA table
10.3.8 MPI table
10.3.9 MP table
10.3.10 CRI table
10.3.11 DCI table
10.3.12 Layout Configuration Table
10.3.13 SSWR message
10.3.14 LS message
10.3.15 LR message
10.3.16 SI table
10.4 Signalling messages for Package delivery
10.4.1 Hypothetical receiver buffer model (HRBM) message
10.4.2 Measurement configuration (MC) message
10.4.3 ARQ configuration (AC) message
10.4.4 ARQ feedback (AF) message
10.4.5 Reception quality feedback (RQF) message
10.4.6 NAM feedback (NAMF) message
10.4.7 Low delay consumption (LDC) message
10.4.8 Hypothetical receiver buffer model (HRBM) removal message
10.4.9 ADC message
10.4.10 NAT_Keepalive (NK) message
10.4.11 Media Resource Identification (MRI) message
10.4.12 Consumption reporting (CR) message
10.4.13 Distributed Resource Identification (DRI) message
10.4.14 Distributed Signaling Information (DSI) message
10.4.15 Bandwidth Probing reQuest (BPQ) message
10.4.16 Bandwidth Probing Response (BPR) message
10.4.17 Pacing Buffer Removal Rate (PRR) message
10.4.18 Pacing Buffer Status Feedback (PSF) message
10.4.19 Cell congestion information messages
10.4.20 MMT Transition Request (MTR) message
10.4.21 MMT Transition Notification (MTN) message
10.4.22 Asset Change Request (ACR) message
10.4.23 CMAF Presentation Description (CPD) Messages
10.4.24 Content Selection (CS) Message
10.4.25 RTSP message
10.4.26 VAST/VMAP Message
10.4.27 Service List (SL) information message
10.5 Descriptors
10.5.1 CRI descriptor
10.5.2 MPU timestamp descriptor
10.5.3 Dependency descriptor
10.5.4 GFDT descriptor
10.5.5 SI descriptor
10.5.6 MMT Service Descriptor
10.5.7 Mobile information descriptor
10.5.8 Media quality descriptor
10.5.9 MPU Presentation Region Descriptor
10.5.10 Asset Group Descriptor
10.5.11 Access Network Descriptor
10.5.12 Subtitle Change descriptor
10.5.13 AT descriptor
10.6 Syntax element groups
10.6.1 MMT_general_location_info
10.6.2 asset_id
10.6.3 Identifier mapping
10.6.4 MIME type
10.7 ID and tags values
11 Hypothetical receiver buffer model (HRBM)
11.1 General
11.2 FEC decoding buffer
11.3 De-jitter buffer
11.4 MMTP packet decapsulation buffer
11.5 Usage of HRBM
11.6 Estimation of end-to-end delay and buffer requirement
11.7 HRBM signalling
11.8 HRBM with pacing buffer
12 Cross layer interface (CLI)
12.1 General
12.2 Cross layer information
12.2.1 General
12.2.2 Top-down QoS information
12.2.3 Bottom-up QoS information
12.2.4 Network abstraction for media (NAM)
12.2.5 Syntax
12.2.6 Semantics
13 MMTP Session Setup and Control over Unicast
13.1 Session Description for MMTP
13.1.1 MMTP Protocol Identifier
13.1.2 Object Flow Semantics
13.1.3 Object Flow Descriptors
13.1.4 SDP Syntax Examples
13.2 RTSP
13.2.1 General
13.2.2 MMT Range Format
13.2.3 MMT sub-flow Parameter
13.3 WebSockets for MMTP
13.3.1 General
13.3.2 Upgrade to MMT over WebSocket
13.3.3 Framing in the MMT sub-protocol
13.3.4 Sub-protocol Registration
13.4 Multipath Support in MMTP
13.4.1 General
13.4.2 Multipath Negotiation
13.4.3 Session Modification with Multipath
13.4.4 Feedback Message Enhancements
14 CDN Support
14.1 General
14.2 DNS Resolution of MMT URLs
14.2.1 General
14.2.2 DNS query message for MMT URLs
14.2.3 DNS response message for MMT URLs
14.2.4 DNS update message of MMT URLs
14.2.5 Media Resource Update (MRU) Message
14.2.6 MRI Request (MRIR) message
14.3 MANE
14.3.1 Definition
14.3.2 Interface between MMT sending entity and MANE
14.3.3 Authentication / Authorization
14.3.4 Creation of a MMTP session
14.3.5 Creation of MMTP flow
14.3.6 MMTP session update
14.3.7 MMTP flow update
14.3.8 Termination of MMTP session
14.3.9 Termination of MMTP flow
14.3.10 MMTP session query to MANE
14.3.11 MMTP session measurement feedback
15 FCAST support in MMT
15.1 General
15.2 MMT signalling of resources delivered using FCAST
15.2.1 General
15.2.2 Syntax of FCAST location type
15.2.3 Semantics
15.3 FCAST over MMTP
15.3.1 MMTP packet header for FCAST
15.3.2 MMTP payload header for FCAST mode
15.3.3 Signalling in MPT for FCAST
15.3.4 FCAST descriptor
15.3.5 Metadata collection object
Annex A (informative) Jitter calculation in MMTP
Annex B (normative) XML syntax and MIME type for signalling message
Annex C (normative) Application layer forward error correction (AL-FEC) framework for MMT
Annex D (informative) QoS management model for MMT
Annex E (informative) Operation of downloadable DRM and CAS
Annex F (informative) DASH segment over MMTP
Annex G (normative) Scheme of MMT URI
Annex H (normative) Transactions on Generic Data Carried over MPEG-H 3D Audio
Annex I (informative) Session Migration from HTTP
Annex J (informative) MBMS Content Ingestion
Annex K (informative) Configuration example
Annex L (normative) MMT Mapping of CMAF content
Annex M (normative) Carriage of EVC
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Conventions
5 Overview
6 MMT data model
6.1 General
6.2 Package
6.3 Asset
6.4 Media processing unit (MPU)
6.5 Asset delivery characteristics
6.5.1 General
6.5.2 ADC descriptors
6.5.3 Syntax
6.5.4 Semantics
6.6 Bundle delivery characteristics
6.6.1 General
6.6.2 BDC descriptors
6.6.3 Syntax
6.6.4 Semantics
7 ISOBMFF-based MPU
7.1 General
7.2 MPU brand definition
7.3 MPU box
7.3.1 Definition
7.3.2 Syntax
7.3.3 Semantics
8 MMT hint track
8.1 General
8.2 Sample description format
8.2.1 Definition
8.2.2 Syntax
8.2.3 Semantics
8.3 Sample format
8.3.1 Definition
8.3.2 Syntax
8.3.3 Semantics
9 Packetized delivery of Package
9.1 General
9.2 MMT protocol
9.2.1 General
9.2.2 Structure of an MMTP packet
9.2.3 Semantics
9.2.4 MMTP session description information
9.3 MMTP payload
9.3.1 General
9.3.2 MPU mode
9.3.3 Generic file delivery mode
9.3.4 Signalling message mode
9.4 MMTP operation
9.4.1 General
9.4.2 Delivering MPUs
9.4.3 Delivering generic objects
9.4.4 Header compression for MMTP packet
10 Signalling
10.1 General
10.2 Signalling message format
10.2.1 General
10.2.2 Syntax
10.2.3 Semantics
10.3 Signalling messages for Package consumption
10.3.1 General
10.3.2 PA message
10.3.3 MPI message
10.3.4 MPT message
10.3.5 CRI message
10.3.6 DCI message
10.3.7 PA table
10.3.8 MPI table
10.3.9 MP table
10.3.10 CRI table
10.3.11 DCI table
10.3.12 Layout Configuration Table
10.3.13 SSWR message
10.3.14 LS message
10.3.15 LR message
10.3.16 SI table
10.4 Signalling messages for Package delivery
10.4.1 Hypothetical receiver buffer model (HRBM) message
10.4.2 Measurement configuration (MC) message
10.4.3 ARQ configuration (AC) message
10.4.4 ARQ feedback (AF) message
10.4.5 Reception quality feedback (RQF) message
10.4.6 NAM feedback (NAMF) message
10.4.7 Low delay consumption (LDC) message
10.4.8 Hypothetical receiver buffer model (HRBM) removal message
10.4.9 ADC message
10.4.10 NAT_Keepalive (NK) message
10.4.11 Media Resource Identification (MRI) message
10.4.12 Consumption reporting (CR) message
10.4.13 Distributed Resource Identification (DRI) message
10.4.14 Distributed Signaling Information (DSI) message
10.4.15 Bandwidth Probing reQuest (BPQ) message
10.4.16 Bandwidth Probing Response (BPR) message
10.4.17 Pacing Buffer Removal Rate (PRR) message
10.4.18 Pacing Buffer Status Feedback (PSF) message
10.4.19 Cell congestion information messages
10.4.20 MMT Transition Request (MTR) message
10.4.21 MMT Transition Notification (MTN) message
10.4.22 Asset Change Request (ACR) message
10.4.23 CMAF Presentation Description (CPD) Messages
10.4.24 Content Selection (CS) Message
10.4.25 RTSP message
10.4.26 VAST/VMAP Message
10.4.27 Service List (SL) information message
10.5 Descriptors
10.5.1 CRI descriptor
10.5.2 MPU timestamp descriptor
10.5.3 Dependency descriptor
10.5.4 GFDT descriptor
10.5.5 SI descriptor
10.5.6 MMT Service Descriptor
10.5.7 Mobile information descriptor
10.5.8 Media quality descriptor
10.5.9 MPU Presentation Region Descriptor
10.5.10 Asset Group Descriptor
10.5.11 Access Network Descriptor
10.5.12 Subtitle Change descriptor
10.5.13 AT descriptor
10.6 Syntax element groups
10.6.1 MMT_general_location_info
10.6.2 asset_id
10.6.3 Identifier mapping
10.6.4 MIME type
10.7 ID and tags values
11 Hypothetical receiver buffer model (HRBM)
11.1 General
11.2 FEC decoding buffer
11.3 De-jitter buffer
11.4 MMTP packet decapsulation buffer
11.5 Usage of HRBM
11.6 Estimation of end-to-end delay and buffer requirement
11.7 HRBM signalling
11.8 HRBM with pacing buffer
12 Cross layer interface (CLI)
12.1 General
12.2 Cross layer information
12.2.1 General
12.2.2 Top-down QoS information
12.2.3 Bottom-up QoS information
12.2.4 Network abstraction for media (NAM)
12.2.5 Syntax
12.2.6 Semantics
13 MMTP Session Setup and Control over Unicast
13.1 Session Description for MMTP
13.1.1 MMTP Protocol Identifier
13.1.2 Object Flow Semantics
13.1.3 Object Flow Descriptors
13.1.4 SDP Syntax Examples
13.2 RTSP
13.2.1 General
13.2.2 MMT Range Format
13.2.3 MMT sub-flow Parameter
13.3 WebSockets for MMTP
13.3.1 General
13.3.2 Upgrade to MMT over WebSocket
13.3.3 Framing in the MMT sub-protocol
13.3.4 Sub-protocol Registration
13.4 Multipath Support in MMTP
13.4.1 General
13.4.2 Multipath Negotiation
13.4.3 Session Modification with Multipath
13.4.4 Feedback Message Enhancements
14 CDN Support
14.1 General
14.2 DNS Resolution of MMT URLs
14.2.1 General
14.2.2 DNS query message for MMT URLs
14.2.3 DNS response message for MMT URLs
14.2.4 DNS update message of MMT URLs
14.2.5 Media Resource Update (MRU) Message
14.2.6 MRI Request (MRIR) message
14.3 MANE
14.3.1 Definition
14.3.2 Interface between MMT sending entity and MANE
14.3.3 Authentication / Authorization
14.3.4 Creation of a MMTP session
14.3.5 Creation of MMTP flow
14.3.6 MMTP session update
14.3.7 MMTP flow update
14.3.8 Termination of MMTP session
14.3.9 Termination of MMTP flow
14.3.10 MMTP session query to MANE
14.3.11 MMTP session measurement feedback
15 FCAST support in MMT
15.1 General
15.2 MMT signalling of resources delivered using FCAST
15.2.1 General
15.2.2 Syntax of FCAST location type
15.2.3 Semantics
15.3 FCAST over MMTP
15.3.1 MMTP packet header for FCAST
15.3.2 MMTP payload header for FCAST mode
15.3.3 Signalling in MPT for FCAST
15.3.4 FCAST descriptor
15.3.5 Metadata collection object
Annex A (informative) Jitter calculation in MMTP
Annex B (normative) XML syntax and MIME type for signalling message
Annex C (normative) Application layer forward error correction (AL-FEC) framework for MMT
Annex D (informative) QoS management model for MMT
Annex E (informative) Operation of downloadable DRM and CAS
Annex F (informative) DASH segment over MMTP
Annex G (normative) Scheme of MMT URI
Annex H (normative) Transactions on Generic Data Carried over MPEG-H 3D Audio
Annex I (informative) Session Migration from HTTP
Annex J (informative) MBMS Content Ingestion
Annex K (informative) Configuration example
Annex L (normative) MMT Mapping of CMAF content
Annex M (normative) Carriage of EVC
Bibliography