ISO/IEC 23090-8:2020

INTERNATIONAL ISO/IEC
STANDARD 23090-8
First edition
2020-12
Information technology — Coded
representation of immersive media —
Part 8:
Network based media processing
Reference number
ISO/IEC 23090-8:2020(E)
©
ISO/IEC 2020

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ISO/IEC 23090-8:2020(E)

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© ISO/IEC 2020
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ISO/IEC 23090-8:2020(E)
Contents
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 . 4
5 Overview . 5
5.1 General . 5
5.2 Architecture . 5
5.3 NBMP workflow . 6
5.3.1 General . 6
5.3.2 Workflow processing model . 6
5.3.3 Task allocation and distribution . 8
5.3.4 Workflow graph . 8
5.4 Relationship between logical definitions, data objects and REST resources . 9
5.5 Description of the defined entities in this document . 10
5.5.1 NBMP APIs . 10
5.5.2 Content format . 10
5.5.3 Definitions . 10
5.5.4 Functional behaviour . 11
6 NBMP descriptions . 11
6.1 NBMP function description (FD) . 11
6.1.1 General . 11
6.1.2 Description . 11
6.1.3 Function group . 12
6.2 NBMP task description (TD) . 13
6.2.1 General . 13
6.2.2 Description . 13
6.2.2 Task lifecycle . 14
6.3 NBMP workflow description (WD) . 15
6.3.1 General . 15
6.3.2 Description . 15
6.3.3 Workflow lifecycle . 16
7 NBMP interfaces . 17
7.1 General . 17
7.2 Workflow APIs . 18
7.2.3 Workflow API operations . 18
7.3 Task APIs . 20
7.3.1 General . 20
7.3.2 Task resource . 20
7.3.3 Task API operations . 21
7.4 Function discovery APIs . 22
7.4.1 General . 22
7.4.2 Function discovery queries . 22
7.4.3 Function discovery API operations . 23
7.5 Supported protocols . 25
8 NBMP descriptors . 25
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ISO/IEC 23090-8:2020(E)
8.1 Scheme descriptor .25
8.1.1 General .25
8.1.2 JSON schema .26
8.2 General descriptor .27
8.2.1 General .27
8.2.2 JSON schema .28
8.3 Input descriptor .32
8.3.1 General .32
8.3.2 JSON schema .33
8.3.3 General .38
8.3.4 JSON schema .39
8.4 Processing descriptor .43
8.4.1 General .43
8.4.2 JSON schema .46
8.5 Requirements descriptor .53
8.5.1 General .53
8.5.2 JSON schema .55
8.6 Configuration descriptor .59
8.6.1 General .59
8.6.2 JSON schema .60
8.7 Startup-delay descriptor.63
8.7.1 General .63
8.7.2 JSON schema .64
8.8 Client-Assistance descriptor .64
8.8.1 General .64
8.8.2 JSON schema .65
8.9 Failover descriptor .66
8.9.1 General .66
8.9.2 JSON schema .66
8.10 Events descriptor .67
8.10.1 General .67
8.10.2 JSON schema .68
8.11 Variables descriptor.68
8.11.1 General .68
8.11.2 JSON schema .69
8.12 Monitoring descriptor .70
8.12.1 General .70
8.12.2 JSON schema .70
8.13 Reporting descriptor .71
8.13.1 General .71
8.13.2 JSON schema .72
8.14 Notification descriptor .74
8.14.1 General .74
8.14.2 JSON schema .74
8.15 Assertion descriptor .76
8.15.1 General .76
8.15.2 JSON schema .78
8.16 Request Descriptor .81
8.16.1 General .81
8.16.2 JSON schema .81
8.17 Acknowledge descriptor .82
8.17.1 General .82
8.17.2 JSON schema .82
8.18 Repository descriptor.83
8.18.1 General .83
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ISO/IEC 23090-8:2020(E)
8.18.2 JSON schema . 84
8.19 Security descriptor . 85
8.19.1 General . 85
8.19.1 JSON schema . 86
8.20 Step descriptor . 87
8.20.1 General . 87
8.20.2 JSON schema . 87
9 NBMP parameters . 88
9.1 General . 88
9.2 Scheme descriptor parameters . 88
9.3 General descriptor parameters . 89
9.4 Input descriptor parameters . 90
9.5 Output descriptor parameters . 92
9.6 Processing descriptor parameters . 94
9.7 Requirements descriptor parameters . 95
9.7.1 Flow control parameters . 95
9.7.2 Hardware parameters . 95
9.7.3 Security requirements . 96
9.7.4 Workflow/task requirements . 97
9.7.5 Resource estimator parameters . 97
9.8 Startup-Delay descriptor parameters . 97
9.9 Client-Assistant parameters . 98
9.10 Failover parameters . 98
9.11 Events parameters . 99
9.12 Variables parameters . 99
9.13 Monitoring parameters . 100
9.14 Reporting parameters. 100
9.15 Notification parameters . 101
9.16 Assertion parameters . 101
9.17 Request parameters . 103
9.18 Acknowledge parameters . 103
9.19 Repository parameters . 104
9.20 Security parameters . 104
9.21 Step Descriptor parameters . 105
9.22 Configuration descriptor parameters . 106
9.22.1 Generic parameter representation . 106
9.22.2 Example of parameter representation . 107
10 Workflow manager, task and function repository requirements . 110
10.1 Workflow manager requirements . 110
10.2 Function repository requirements. 111
10.3 Task requirements . 111
11 NBMP support for media formats and metadata . 112
11.1 General . 112
11.2 Media formats . 112
11.3 Application formats . 112
11.4 Metadata formats . 112
12 Security considerations in NBMP . 112
12.1 Overview . 112
12.2 Secure and authenticated channels between NBMP source and NBMP workflow
manager . 113
12.2.1 General . 113
12.2.2 Secure communication channel between NBMP source and NBMP workflow manager
. 113
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ISO/IEC 23090-8:2020(E)
12.2.3 NBMP source authentication to workflow manager . 113
12.2.4 Workflow manager authentication to NBMP source . 113
12.2.5 Secure channels for task communication . 113
12.2.6 NBMP source authentication/authorization to workflow task . 114
12.2.7 Workflow task authentication to NBMP source . 114
12.2.8 Secure channel for NBMP source and task communication . 114
12.2.9 MPE security . 114
12.2.10 Network security . 114
Annex A (normative) JSON schemas . 115
Annex B (normative) NBMP workflow management . 116
Annex C (informative) Schema for identifying MPEG compatible functions . 119
Annex D (normative) NBMP MIME types . 120
Annex E (informative) Interface for managing function descriptions in function repository
. 123
Bibliography . 124

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ISO/IEC 23090-8:2020(E)
Foreword
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This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
A list of all parts in the ISO/IEC 23090 series ca
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