Overview
ISO/IEC 23094-1:2020/Amd 1:2023 is an important international standard published by ISO and IEC that amends the original Essential Video Coding (EVC) standard. This Amendment 1 introduces Green Metadata Supplemental Enhancement Information, designed to improve energy efficiency and support sustainable media consumption in video coding technologies. The amendment focuses on integrating green metadata to aid in reducing video streaming energy consumption while maintaining video quality and compression performance.
The document builds upon the foundational principles of general video coding established in ISO/IEC 23094-1:2020, further refining video codec operations with updated normative references, corrections, and technical enhancements related to green metadata and video coding syntax and semantics.
Key Topics
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Green Metadata Integration
This amendment adds supplemental enhancement information to video bitstreams capturing energy-related metadata. This metadata enables devices and applications to optimize resource usage for energy-efficient media consumption.
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Normative References Added
New referenced standards such as Rec. ITU-T H.273 | ISO/IEC 23091-2 for coding-independent video code points and ISO/IEC 23001-11 for energy-efficient media consumption technologies have been integrated.
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Coding Syntax and Semantics Updates
Numerous technical edits improve the precision and clarity of video coding syntax, including:
- Enhanced parameter lists for coding units with added elements like
treeType and predModeConstraint.
- Adjustments to conditions related to intra prediction modes and block splitting to align with green metadata concepts.
- Refinements in formula notations and replacement of certain syntax elements for correctness.
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Energy Efficiency Focus
The amendment promotes energy savings during video playback and transmission by enabling codecs and decoders to interpret and leverage green metadata, thereby fostering sustainable digital media ecosystems.
Applications
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Video Streaming Services
Service providers can implement this amendment to embed green metadata within video streams, empowering client devices to adjust decoding and rendering parameters for lower power consumption during playback.
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Media Players and Devices
Media playback software and hardware can leverage green metadata to optimize energy use dynamically, contributing to battery life extension in mobile devices and reducing electricity consumption on larger displays.
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Content Delivery Networks (CDNs)
CDNs can utilize the standard enhancements to support signaling of energy efficiency information, assisting in adaptive delivery strategies that balance video quality and power usage during various network conditions.
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Video Codec Development
Codec developers seeking to create energy-efficient encoding and decoding solutions will find the amendment’s updates critical for integrating green metadata and ensuring compliance with international video coding standards.
Related Standards
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ISO/IEC 23094-1:2020 – Essential Video Coding
The base standard defining the core technologies for essential video coding, providing the framework upon which this amendment builds.
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ITU-T Recommendation H.273 | ISO/IEC 23091-2
Standard for coding-independent code points, offering classification and identification of video formats independent of codec specifics.
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ISO/IEC 23001-11
MPEG Systems technologies standard focused on energy-efficient media consumption, directly related to green metadata concepts incorporated in this amendment.
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ISO/IEC Directives, Part 1 and 2
Governing guidelines for standard development and editorial rules followed during the drafting and maintenance of this amendment.
Practical Value
Implementing ISO/IEC 23094-1:2020/Amd 1:2023 ensures video compression technologies remain current with sustainability imperatives by embedding green metadata. This facilitates intelligent energy management across the video delivery and consumption chain-from encoding in studios to playback on end-user devices-helping reduce the environmental impact of the rapidly growing global video traffic.
Video professionals, codec developers, and system integrators focused on energy-efficient video coding, sustainable streaming solutions, and adaptive media consumption frameworks will gain substantial practical benefits by aligning with this amendment.
For more information, purchasing the standard or contacting ISO/IEC entities, visit ISO official website and refer to the ISO copyright office details.
Open preview (PDF)Information technology — General video coding — Part 1: Essential video coding — Amendment 1: Green metadata supplemental enhancement information
