Technologies de l'information - Systѐme de codage d'images JPEG XL — Partie 2: Format de fichiers

This document specifies the transport and container formats for JPEG XL codestreams as specified in ISO/IEC 18181-1. This document specifies how to add metadata and extensions to JPEG XL codestreams. A file as described by this document is called a JPEG XL file.