ISO/IEC 18181-2:2021

INTERNATIONAL ISO/IEC
STANDARD 18181-2
First edition
2021-10
Information technology — JPEG XL
image coding system —
Part 2:
File format
Technologies de l'information - Systѐme de codage d'images JPEG
XL —
Partie 2: Format de fichiers
Reference number
ISO/IEC 18181-2:2021(E)
© ISO/IEC 2021

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ISO/IEC 18181-2:2021(E)
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Published in Switzerland
ii
  © ISO/IEC 2021 – All rights reserved

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ISO/IEC 18181-2:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
5 File organization .2
6 Data types and numerical values . 4
7 Graphical descriptions . 4
8 Binary format of a box . .5
9 Box types . 6
9.1 JPEG XL signature box . 6
9.2 File type box . . 6
9.3 Level box . 6
9.4 JUMBF box . 6
9.5 Exif box . 6
9.6 XML box . 7
9.7 Brotli-compressed box . 7
9.8 Frame index box .
...