ITU-T Recommendations

ISO/IEC 23008-12 specifies a framework for the interchange of images and image sequences using tools defined in the ISO base media file format (ISO/IEC 14496-12), which is in wide use worldwide. This framework is defined independently of the formats of the images and image sequences, allowing a wide range of such formats to be used in combination with ISO/IEC 23008-12. To simplify the use of the JPEG 2000 family of image formats (Rec. ITU-T T.8xx series | ISO/IEC 15444) in applications that use the ISO base media file format, Rec. ITU-T T.815 | ISO/IEC 15444-16 specifies the encapsulation of these image formats in the framework defined in ISO/IEC 23008-12 and related applications such as ISO/IEC 23000-22. Recommendation ITU-T T.815 (2021) is a common text with ISO/IEC 15444-16:2021. This second edition cancels and replaces the first edition, which has been technically revised. The main changes compared to the previous edition are as follows: – the encapsulation of Rec. ITU-T T.802 | ISO/IEC 15444-3 image sequences is deprecated, and replaced by the encapsulation of Rec. ITU-T T.800 | ISO/IEC 15444-1 image sequences; – adds support for quality and resolution layers; – the syntax and semantics of the JPEG 2000 header item property are clarified; and reader conformance requirements are removed.