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//ISO/IEC 23001-17:2024/Amd 2:2025

ISO/IEC 23001-17:2024/Amd 2:2025

Information technology — MPEG systems technologies — Part 17: Carriage of uncompressed video and images in ISO base media file format — Amendment 2: Generic compression for samples and items in ISOBMFF

Название (английский):

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 13 августа 2025 г.
Издание:: ISO/IEC IS 23001 edition 1 version 1
ICS:: 35.040.40

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Abstract

Overview

ISO/IEC 23001-17:2024/Amd 2:2025 is an important amendment to the ISO/IEC 23001-17 standard, focusing on the carriage of uncompressed video and images in the ISO base media file format (ISOBMFF). This amendment introduces a for samples and items within ISOBMFF, enabling efficient storage and transmission while maintaining numerically and bitwise lossless quality.

Key Topics

Generic Compression for ISOBMFF The amendment defines how to apply generic, lossless compression on image samples, uncompressed video, and other media types like KLV metadata within ISOBMFF. This supports both floating-point and integer pixel formats, expanding ISOBMFF’s flexibility to handle complex data types.
Compression Configuration Structure Introduction of the CompressionConfigurationBox ('cmpC') that specifies compression methods (such as zlib) and codec parameters for compressed units. This box is essential for signaling generic compression on media tracks or item properties.
Tile-based Compression and Access Large images can be tiled (e.g., 1024 × 1024 pixel tiles) and each tile compressed independently. This supports efficient random access and partial decompression of spatially localized regions, enabling faster data handling without decompressing entire files.
Support for Signed Integers and Floating-point Formats The amendment adds support for signed integer components and IEEE 754 floating-point formats, which are typically unsupported in most image compression systems, ensuring accurate scientific and geospatial data representation.
Data Padding and Alignment Enhancements Clarifications and corrections related to padding using subsampled chroma components and component value alignment ensure compatibility and efficient memory access without bit-shifts or crossing memory boundaries.
Lossless Compression Guarantees Guarantees bitwise-lossless compression to meet strict legal and regulatory requirements for records management and archival-preserving exact bit patterns of original media data.

Applications

Scientific and Geospatial Imaging Scientific instruments producing large floating-point images or terrain data can benefit from storage and bandwidth savings without losing numerical accuracy, enabling better data reuse and transmission.
Media Archiving and Broadcasting Broadcasters and archivists handling uncompressed or high-bit-depth content can utilize generic compression within the ISOBMFF container to reduce file sizes and optimize delivery pipelines.
Metadata Compression Key-Length-Value (KLV) metadata tracks can be compressed generically, reducing overhead for storing associated metadata while maintaining integrity and fast access.
Partial Image Processing and Editing Applications loading only portions of large images (e.g., geographic information systems or image editors) can selectively decompress relevant tiles or chunks, significantly improving performance and resource management.
Legal Compliance Organizations requiring bitwise-lossless compression for audit-quality storage can rely on this amendment to meet stringent data preservation standards.

Related Standards

ISO/IEC 23001-17 The base standard for the carriage of uncompressed video and images in ISOBMFF; this amendment extends its capabilities.
IETF RFC 1950 & RFC 1951 Define the zlib and DEFLATE compression formats referenced for generic compression.
IETF RFC 7932 Specifies the Brotli compression format supported for generically compressed data.
SMPTE 336M-2007 Key-Length-Value (KLV) metadata encoding, extended here for generic compression within the container.
ISOBMFF (ISO/IEC 14496-12) The structural framework for media file storage and streaming; this amendment enhances media sample handling within ISOBMFF.

Summary

ISO/IEC 23001-17:2024/Amd 2:2025 advances MPEG systems by integrating generic lossless compression for uncompressed video, images, and metadata in ISOBMFF. This brings efficient storage, precise bitwise data fidelity, and enhanced accessibility for large, high-bit-depth, and floating-point datasets widely used in scientific, geospatial, and media industries. By leveraging open-standard compression techniques and providing robust support for tiled data organization, this amendment optimizes modern media workflows while maintaining compliance with legal and technical rigor.

Keywords: ISO/IEC 23001-17 amendment, ISOBMFF compression, uncompressed video carriage, generic lossless compression, tiled image compression, floating-point image format, KLV metadata compression, MPEG systems, bitwise-lossless storage, high-bit-depth image storage.

Технические детали

Технический комитет: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
SKU: ISO/IEC 23001-17:2024/Amd 2:2025

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