GB/T 46269.2-2025 High dynamic range (HDR) video technology—Part 2: Application guide English, Anglais, Englisch, Inglés, えいご
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ICS 35.040 CCS L 71
People's Republic of China National Standard
GB/T 46269.2-2025
High dynamic range (HDR) video technology - Part 2: Application guide
Issued on 2025-08-29 Implemented on 2026-03-01
Issued by State Administration for Market Regulation, Standardization Administration of China
Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Abbreviations
5 Overview
6 HDR Metadata Generation
7 HDR Metadata Packaging
8 HDR Terminal Application
Appendix A (Informative) HDR Metadata Transmission via HDMI
References
1 Scope
This document provides application guidelines for HDR metadata compliant with GB/T 46269.1.
This document applies to high dynamic range video signal processing in broadcasting, network audiovisual, video surveillance, real-time communication, and digital storage media, including acquisition, production, broadcasting, distribution, reception, and display.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies; for undated references, the latest edition (including amendments) applies.
GB/T 17975.1 Information technology - Generic coding of moving pictures and associated audio - Part 1: Systems
GB/T 46269.1 High dynamic range (HDR) video technology - Part 1: Metadata and adaptation
ISO/IEC 14496-12:2022 Information technology - Coding of audio-visual objects - Part 12: ISO base media file format
ISO/IEC 23009-1 Information technology - Dynamic adaptive streaming over HTTP (DASH) - Part 1: Media presentation description and segment formats
ITU-R BT.2020 Parameter values for ultra-high definition television systems for production and international programme exchange
ITU-T H.264 Versatile supplemental enhancement information messages for coded video bitstreams
ITU-T T.35 Procedure for the allocation of ITU-T defined codes for non-standard facilities
IETF RFC 8216 HTTP Live Streaming
3 Terms and Definitions
Terms and definitions defined in GB/T 46269.1 apply to this document.
4 Abbreviations
The following abbreviations apply to this document:
DASH: Dynamic Adaptive Streaming over HTTP
DCCD: Device Comprehensive Capability Description
DIP: Descriptive Information Packet
EDID: Extended Display Identification Data
EOTF: Electro-Optical Transfer Function
ES: Elementary Stream
GPMI: General Purpose Multimedia Interface
HDMI: High Definition Multimedia Interface
HDR: High Dynamic Range
HLG: Hybrid Log-Gamma
HLS: HTTP Live Streaming
OETF: Opto-Electrical Transfer Function
PMT: Program Mapping Table
PQ: Perceptual Quantizer
SDR: Standard Dynamic Range
TS: Transport Stream
XAVC: Extended Advanced Video Coding
5 Overview
HDR video stream metadata application consists of three main stages: metadata generation, packaging, and terminal application. The metadata generation stage produces compliant metadata based on video analysis and adjustments according to GB/T 46269.1. The packaging stage integrates metadata into video streams or files at both program and transport stream levels. The terminal application stage extracts, transmits, and processes metadata in accordance with GB/T 46269.1. Figure 1 illustrates the HDR video processing workflow.
