ISO/IEC INTERNATIONAL STANDARD 23008-12 Second edition 2022-09 Information technology MPEG systems technologies - Part 12: Image File Format Technologies de Il'information-Technologies des systemes MPEG- Partie12:Formatdefichierd'image Reference number IEC IS0/IEC 23008-12:2022(E) ISO IS0/IEC2022 IS0/IEC23008-12:2022(E) COPYRIGHTPROTECTEDDOCUMENT @IS0/IEC2022 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 anyform 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 IO 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 ii ISO/IEC2022-Allrightsreserved IS0/IEC23008-12:2022(E) Contents Page Foreword vi Introduction. ..vii 1 Scope. 2 Normative references 3 Terms,definitions, and abbreviated terms. 3.1 Terms and definitions 1 3.2 Abbreviated terms. 4 Overview .6 5 Generalrequirements 5.1 General requirements on files 6 1 5.2 General requirements on readers 5.3 Multi-purposefiles. .7 5.4 Otherboxes. 6 Singleimageandimage collection 6.1 General 7 6.2 Derivationfrom theIsobasemediafileformat 7 .8 6.3 Derivation of an output image ofan image item 6.4 Roles of images. .8 6.4.1 General .8 6.4.2 Hidden images .8 6.4.3 Coverimage 9 6.4.4 Thumbnail images. 9 6.4.5 Auxiliary images. .9 6.4.6 Master images. 9 6.4.7 Pre-derived coded images ..9 6.4.8 Multi-layer images 9 6.4.9 Predictivelycodedimage items .10 6.5 Image properties 10 6.5.1 General 10 6.5.2 Decoder configurationandinitialization 11 6.5.3 Imagespatialextents .11 6.5.4 Pixel aspect ratio. .12 6.5.5 Colour information .12 6.5.6 Pixel information 6.5.7 Relative location .14 6.5.8 Image properties for auxiliary images .. 14 6.5.9 Clean aperture. .15 6.5.10 Image rotation .15 6.5.11 Layerselection .16 Image mirroring .17 6.5.12 6.5.13 Image scaling 17 6.5.14 Content light level .18 6.5.15 Masteringdisplaycolourvolume 19 6.5.16 Contentcolour volume. .19 6.5.17 Required reference types 6.5.18 Creationtimeinformation .20 6.5.19 Modificationtimeinformation 21 6.5.20 User description. .21 6.5.21 Accessibilitytext 22 6.5.22 Auto Exposure Information 22 Whitebalance information .23 6.5.23 6.5.24 Focus information .24 iii ISO/IEC2022-Allrightsreserved