GB/T 33475.6-2024 English PDF

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GB/T 33475.6-2024: Information technology - High efficiency multimedia coding - Part 6: Smart media transport
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Basic data

Standard ID: GB/T 33475.6-2024 (GB/T33475.6-2024)
Description (Translated English): Information technology - High efficiency multimedia coding - Part 6: Smart media transport
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L71
Word Count Estimation: 94,937
Date of Issue: 2024-05-28
Date of Implementation: 2024-12-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 33475.6-2024: Information technology - High efficiency multimedia coding - Part 6: Smart media transport

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 35.040 CCSL71 National Standards of People's Republic of China Information Technology Efficient Multimedia Coding Part 6.Intelligent Media Transport Part 6.Smartmediatransport 2024-12-01 implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 3 5 Agreement 4 6 Architecture 4 7 Data Model 4 7.1 Overview 4 7.2 Data Pack 5 7.3 Media Resources 5 7.4 General Packaging Unit 6 8 Data Transmission 10 8.1 Overview 10 8.2 Transmission Model 10 8.3 Transport Protocol 11 8.4 Transmission load structure 15 8.5 Transfer operations based on load structure 18 9 Signaling 19 9.1 Overview 19 9.2 Signaling message format 19 9.3 Media Packet Consumption Signaling Message 20 9.4 Media Resource Descriptors 28 9.5 Syntax element groups 32 9.6 ID value 37 9.7 Resource Request Response Message 39 9.8 Interactive Feedback Messages 41 9.9 Session Control Signaling 42 9.10 Equipment performance information 44 9.11 Clock Relationship Information 46 9.12 Synchronous Request Message 48 9.13 Synchronous Response Message 49 9.14 Media Resource Transfer Characteristics Message 50 10 Media Presentation53 10.1 Overview 53 10.2 Presentation Model 53 10.3 Media Presentation Signaling 54 11 HTTP/2 Live Streaming 59 11.1 Overview 59 11.2 System Architecture 60 11.3 Data Types 61 11.4 Push Strategy 63 11.5 HTTP/2 protocol binding 64 11.6 Message Definition 64 12 Adaptive Forward Error Correction Coding 67 12.1 Overview 67 12.2 Adaptive Forward Error Correction Coding Mechanism 68 12.3 Coded Symbol Block Format 72 12.4 FEC Source Packet and Recovery Packet Format 75 Appendix A (Normative) Assumptions about the receiver buffer model 78 A.1 Overview 78 A.2 Forward Error Correction (FEC) Decoding Buffer 78 A.3 De-jitter Buffer 79 A.4 Packet decapsulation buffer 79 A.5 Assuming the use of the receive buffer model 79 A.6 Estimation of end-to-end delay and buffering requirements 79 A.7 Syntax 80 A.8 Semantics 80 Appendix B (Normative) Forward Error Correction Codewords 81 B.1 FEC Coding Algorithm 81 B.2 Adaptive forward error correction coding codeword 81 References 86

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 6 of GB/T 33475 "Information Technology Efficient Multimedia Coding". GB/T 33475 has been published as follows part. --- Part 1.System; --- Part 2.Video; --- Part 3.Audio; --- Part 4.Compliance test; --- Part 5.Reference software; --- Part 6.Intelligent Media Transport; --- Part 7.Image file formats. This document was proposed and coordinated by the National Technical Committee for Information Technology Standardization (SAC/TC28). This document was drafted by. Shanghai Jiao Tong University, Beijing Samsung Telecommunications Technology Research Co., Ltd., Peking University, Beijing University of Technology, ZTE Communications Co., Ltd., Shanghai University, Shenzhen Longgang Intelligent Audiovisual Research Institute, Guangdong Bohua Ultra High Definition Innovation Center Co., Ltd., Zhongguancun Video Listen to Industry Technology Innovation Alliance, OPPO Guangdong Mobile Communications Co., Ltd. The main drafters of this document are. Xu Yiling, Wu Yue, Zhang Xinggong, Mou Luntian, Huang Cheng, Zhang Wenjun, Chen Hao, Jiang Zhiqian, Xie Shaowei, Hu Ying, Xu Jianwei, Chang Yongjian, Huang Wei, Zhu Wenjie, Chen Gao, Liu Li, Guo Zongming, Zhao Haiwu, Huang Tiejun, Zhang Weimin, Long Shiqiang, Zhao Haiying, Yang Zhiyao, Gao Wen.

Introduction

GB/T 33475 "Information Technology - Efficient Multimedia Coding" is intended to consist of the following seven parts. --- Part 1.System. The purpose is to establish a system layer coding method for digital audio and video media. --- Part 2.Video. The purpose is to establish efficient video compression methods. --- Part 3.Audio. The purpose is to establish efficient audio compression methods. --- Part 4.Conformance test. The purpose is to determine how to test and verify the coded bit stream and decoder. --- Part 5.Reference software. The purpose is to define the software that meets the requirements of GB/T 33475.2-2024 and GB/T 33475.3-2018 Required reference software. --- Part 6.Intelligent Media Transport. The purpose is to specify intelligent media for multimedia data transmission in heterogeneous packet switching networks. Transmission technology. --- Part 7.Picture file format. The purpose is to specify the syntax description, semantic description, Package definition. The issuing authority of this document calls attention to the fact that when declaring compliance with this document, it may involve 7.3, 7.4, 8.3, 8.4, 9.3, 9.4, 9.7, 9.8, 9.9, 9.12, 9.13, 10.3, 11.3, 11.4, 11.5, 11.6, 12.1, 12.2, 12.4, Appendix A, Appendix B, the following 26 items and digital video codec Use of technology-related patents. The patent application numbers and names are as follows. Serial Number Patent Application Number Patent Name 1.201510401550.9 A method for implementing multimedia content classification technology 2.201510064427.2 A dynamic time window and cache mechanism under heterogeneous network transmission 3.201510698388.1 A method for dynamically providing resource availability time in heterogeneous media network transmission 4.201710561850.2 Adaptive system code FEC encoding and decoding method based on media content 5.201610107748.0 An information interaction system and network transmission method in a multimedia system 6.201510673115.1 A FEC method based on media content 7.201510673091.X An adaptive FEC method based on media content 8.201610060847.8 Description and personalized display method of content component relationship in multimedia services 9.201610056411.1 A storage and transmission method based on media attributes to support spatial partitioning 10.201610674633.X A method and system for personalized presentation of multimedia content components 11.201510955611.6 A description method for personalized presentation of information associated with multimedia content 12.201610915990.0 Media on-demand mode control method based on broadcast system 13.201710027492.7 A media on-demand service control method based on broadcast system 14.201611141843.9 Method, device and system for processing media information 15.201610757375.1 Adaptive synchronization method of multimedia resources based on network conditions in heterogeneous networks 16.201710973473.3 Adaptive system code FEC method, device and system based on media content 17.201610081443.7 Media data transmission method and device 18.201280029677.7 Method and apparatus for sending/receiving media content in a multimedia system 19.201480042072.0 Method and apparatus for packet transmission supporting downloading and streaming 20.201380025465.6 Method and device for sending and receiving data in multimedia transmission system (Continued) Serial Number Patent Application Number Patent Name 21.201380053506.2 Apparatus and method for transmitting and receiving multimedia data in a hybrid network 22.201280061956.1 Apparatus and method for configuring control messages in a broadcast system 23.201280014043.4 Apparatus and method for configuring control messages in a broadcast system 24.201380035064.9 Method for providing multimedia content 25.201380053098.0 Method and device for media data delivery control 26.201480022346.X Method for sending media data in a multimedia transmission system The issuing organization of this document does not have any position on the authenticity, validity and scope of the above-mentioned patents. The above patent holder has assured the issuing agency of this document that it is willing to cooperate with any applicant under reasonable and non-discriminatory terms and conditions. The above patent holder's statement has been filed with the issuing agency of this document, and the relevant information can be obtained through The following contact information is obtained. Contact. Zhao Haiying (Digital Audio and Video Codec Technical Standard Working Group) Mailing address. Room 515, Mudan Venture Building, No. 2 Huayuan Road, Haidian District, Beijing Postal Code.100191 Email.hy_zhao@163.con Tel. 8610-82282177 Fax. 8610-82282177 Please note that in addition to the above patents, some of the contents of this document may still involve patents. The issuing organization of this document does not assume the responsibility to identify these patents. The responsibility of benefit. Information Technology Efficient Multimedia Coding Part 6.Intelligent Media Transport

1 Scope

This document specifies intelligent media transmission technology for multimedia data transmission in heterogeneous packet switching networks, covering data models, data transmission transmission, signaling, media presentation, HTTP/2 live broadcast, and adaptive forward error correction coding. This document is suitable for applications such as network streaming, network TV and video on demand.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB 18030-2022 Information technology Chinese coded character set GB/T 18793-2002 Information Technology Extensible Markup Language (XML) 1.0 ISO /IEC 14496-12 Information technology Coding of audiovisual objects Part 12.ISO base media file format ISO /IEC 23009-1 Information technology - Dynamic adaptive streaming over HTTP - Part 1.Media presentation description and analysis IETF RFC2141 Uniform Resource Name Syntax (URNSyntax) Syntax) (UUID)URNNamespace] IETF RFC6570 Uniform Resource Identifier Template (URITemplate) (HTTP/1.1).SemanticsandContent] The following terms and definitions apply to this document. ......

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