ISO/IEC FDIS 23008-12
(Main)Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 12: Image File Format
Information technology — High efficiency coding and media delivery in heterogeneous environments — Part 12: Image File Format
This document specifies the Image File Format, an interoperable storage format for a single image, a collection of images, and sequences of images. The format defined in this document is built on tools defined in ISO/IEC 14496-12 and enables the interchange, editing, and display of images, as well as the carriage of metadata associated with those images. The Image File Format defines structures used to contain metadata, how to link that metadata to the images, and defines how metadata of certain forms is carried. This document also specifies brands for the storage of images and image sequences conforming to High Efficiency Video Coding (HEVC), Advanced Video Coding (AVC), JPEG, Versatile Video Coding (VVC) and Essential Video Coding (EVC). NOTE The storage of HEVC, AVC, VVC and EVC video sequences is out of scope and is provided in ISO/IEC 14496‑15.
Technologies de l'information — Codage à haute efficacité et livraison des medias dans des environnements hétérogènes — Partie 12: Format de fichier d'image
General Information
Relations
Buy Standard
Standards Content (Sample)
FINAL DRAFT
International
Standard
ISO/IEC
FDIS
23008-12
ISO/IEC JTC 1/SC 29
Information technology — High
Secretariat: JISC
efficiency coding and media
Voting begins on:
delivery in heterogeneous
2025-02-28
environments —
Voting terminates on:
2025-04-25
Part 12:
Image File Format
Technologies de l'information — Codage à haute efficacité et
livraison des medias dans des environnements hétérogènes —
Partie 12: Format de fichier d'image
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/IEC FDIS 2300812:2025(en) © ISO/IEC 2025
FINAL DRAFT
International
Standard
ISO/IEC
FDIS
23008-12
ISO/IEC JTC 1/SC 29
Information technology — High
Secretariat: JISC
efficiency coding and media
Voting begins on:
delivery in heterogeneous
environments —
Voting terminates on:
Part 12:
Image File Format
Technologies de l'information — Codage à haute efficacité et
livraison des medias dans des environnements hétérogènes —
Partie 12: Format de fichier d'image
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO/IEC 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ISO/IEC FDIS 2300812:2025(en) © ISO/IEC 2025
© ISO/IEC 2025 – All rights reserved
ii
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 2
3.1 Terms and definitions .2
3.2 Abbreviated terms .6
3.3 Mathematical functions .7
4 Overview . 7
5 General requirements . 7
5.1 General requirements on files .7
5.2 General requirements on readers.7
5.3 Multi-purpose files .8
5.4 Other boxes .8
6 Single image and image collection . 8
6.1 General .8
6.2 Derivation from the ISO base media file format .8
6.3 Derivation of an output image of an image item .8
6.4 Roles of images .9
6.4.1 General .9
6.4.2 Hidden images .9
6.4.3 Cover image . .9
6.4.4 Thumbnail images .9
6.4.5 Auxiliary images .10
6.4.6 Master images .10
6.4.7 Pre-derived coded images .10
6.4.8 Multi-layer images .10
6.4.9 Predictively coded image items .11
6.5 Image properties .11
6.5.1 General .11
6.5.2 Decoder configuration and initialization . 12
6.5.3 Image spatial extents . 12
6.5.4 Pixel aspect ratio . 13
6.5.5 Colour information . 13
6.5.6 Pixel information .14
6.5.7 Relative location . 15
6.5.8 Image properties for auxiliary images . 15
6.5.9 Clean aperture .16
6.5.10 Image rotation .16
6.5.11 Layer selection .17
6.5.12 Image mirroring .18
6.5.13 Image scaling .18
6.5.14 Content light level .19
6.5.15 Mastering display colour volume . 20
6.5.16 Content colour volume . 20
6.5.17 Required reference types .21
6.5.18 Creation time information .21
6.5.19 Modification time information . 22
6.5.20 User description . 22
6.5.21 Accessibility text . 23
6.5.22 Auto Exposure Information .24
6.5.23 White balance information .24
6.5.24 Focus information . 25
© ISO/IEC 2025 – All rights reserved
iii
6.5.25 Flash exposure information . 26
6.5.26 Depth of field information . 26
6.5.27 Panorama information .27
6.5.28 Sub-sample information . 28
6.5.29 Target output layer set . 28
6.5.30 Wipe transition effect . 29
6.5.31 Zoom transition effect . 30
6.5.32 Fade transition effect .
...
ISO/IEC JTC 1/SC 29 N
Date: 2024-08
MPEG N24331
ISO/IEC FDIS 23008-12:2024(E)
ISO/IEC JTC 1/SC 29/WG 3
Secretariat: JISC
Date: 2025-02-11
Information technology — MPEG systems technologies — High
efficiency coding and media delivery in heterogeneous
environments —
Part 12:
Image File Format
Technologies de l'information — Technologies — Codage à haute efficacité et livraison des systèmes MPEG
— medias dans des environnements hétérogènes —
Partie 12: Format de fichier d'image
Document type: Error! Reference source not found.
Document subtype:
Document stage: Error! Reference source not found.
Document language: Error! Reference source not found.
Error! Reference source not found.
Copyright notice
FDIS stage
Document type: Error! Reference source not found.
Document subtype:
Document stage: Error! Reference source not found.
Document language: Error! Reference source not found.
Error! Reference source not found.
ISO/IEC FDIS 23008-12:2024(E2025(en)
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'sISO’s member body in the country of the requester.
ISO Copyright Office copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
E-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland.
© ISO/IEC 2024 – All rights reserved iii
© ISO/IEC 2025 – All rights reserved
iii
Error! Reference source not found.ISO/IEC FDIS 23008-12:2025(en)
Contents Page
Foreword . xii
Introduction . xiv
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 7
3.3 Mathematical functions . 8
4 Overview . 8
5 General requirements . 9
5.1 General requirements on files . 9
5.2 General requirements on readers . 9
5.3 Multi-purpose files . 9
5.4 Other boxes . 9
6 Single image and image collection . 9
6.1 General . 9
6.2 Derivation from the ISO base media file format . 10
6.3 Derivation of an output image of an image item . 10
6.4 Roles of images . 11
6.5 Image properties . 13
6.6 Derived images and derived image items . 46
6.7 Image metadata. 49
6.8 Entity and sample groups . 49
6.9 Auxiliary image item types and sample formats . 59
6.10 Text and font items . 61
7 Image sequences . 66
7.1 General . 66
7.2 Derivation from the ISO base media file format . 66
7.3 Presentation of an image sequence track . 68
7.4 Sample groups . 68
7.5 Other tracks . 70
8 Metadata support . 71
8.1 General . 71
8.2 Metadata for image items . 71
8.3 Metadata for image sequence tracks . 72
8.4 Integrity checks . 72
9 Extensions to the ISO base media file format . 74
10 Image File Format brands . 74
10.1 General . 74
10.2 Image and image collection brands . 74
10.3 Image sequence brands . 79
11 Region and region annotation . 79
11.1 Overview . 79
Error! Reference source not found.
iv
© ISO/IEC 2025 – All rights reserved
iv
ISO/IEC FDIS 23008-12:2024(E2025(en)
11.2 Common definitions for image sequence or video tracks and for image items . 79
11.3 Regions and region annotations for an image item . 85
11.4 Regions and region annotations for an image sequence or a video track . 88
Annex A (normative) Storage of externally specified metadata . 93
Annex B (normative) HEVC Image File Format . 95
Annex C (normative) High efficiency image file MIME type registration . 107
Annex D (normative) High efficiency image sequence file MIME type registration. 113
Annex E (normative) AVC in the Image File Format . 117
Annex F (normative) Advanced coding image MIME type registration . 122
Annex G (normative) Advanced coding sequence MIME type registration . 125
Annex H (normative) JPEG in the Image File Format . 128
Annex I (informative) Guidelines for specifying storage of image coding formats . 132
Annex J (informative) Examples of image collections . 133
Annex K (informative) Examples of progressive decoding, rendering and refinement . 138
Annex L (normative) VVC Image File Format . 148
Annex M (normative) EVC Image File Format . 160
Annex N (informative) Privacy and security considerations . 166
Bibliography . 168
Foreword . 8
Introduction . 10
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, abbreviated terms and symbols . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 7
3.3 Mathematical functions . 8
4 Overview . 8
5 General requirements . 8
5.1 General requirements on files . 8
5.2 General requirements on readers . 8
5.3 Multi-purpose files . 9
5.4 Other boxes . 9
6 Single image and image collection . 9
6.1 General . 9
6.2 Derivation from the ISO base media file format . 9
6.3 Derivation of an output image of an image item . 10
6.4 Roles of images . 10
6.4.1 General . 10
6.4.2 Hidden images . 11
© ISO/IEC 2024 – All rights reserved v
© ISO/IEC 2025 – All rights reserved
v
Error! Reference source not found.ISO/IEC FDIS 23008-12:2025(en)
6.4.3 Cover image . 11
6.4.4 Thumbnail images .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.