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 2020
© ISO/IEC 2020
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ii © ISO/IEC 2020 – All rights reserved

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
© ISO/IEC 2020 – All rights reserved iii

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 .
...