Standard No.:	GB/T 46269.2-2025
English Name:	High dynamic range (HDR) video technology—Part 2: Application guide
Chinese Name:	高动态范围（HDR）视频技术 第2部分: 应用指南
Chinese Classification:	L71    Code, character set and character recognition
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-8-29
Implemented on:	2026-3-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	21500 words
Translation Price(USD):	645.0
Delivery:	via email in 1~8 business day

GB/T 46269.2-2025 High dynamic range (HDR) video technology—Part 2: Application guide English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered. 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.