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GB/T 33475.4-2024: Information technology - High efficiency multimedia coding - Part 4: Conformance testing
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Information technology - High efficiency multimedia coding - Part 4: Conformance testing
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GB/T 33475.4-2024
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Basic data | Standard ID | GB/T 33475.4-2024 (GB/T33475.4-2024) | | Description (Translated English) | Information technology - High efficiency multimedia coding - Part 4: Conformance testing | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L71 | | Classification of International Standard | 35.040 | | Word Count Estimation | 50,585 | | 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 33475.4-2024: Information technology - High efficiency multimedia coding - Part 4: Conformance testing
---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 4: Compliance testing
Part 4: Conformance testing
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 2
5 Conformance testing of video coding bitstreams and decoders 2
5:1 General 2
5:2 Definition of video coding bitstream and video decoder conformance 3
5:3 Conformance test of video coding bit stream 3
5:4 Conformance test of video decoder 4
6 Audio compliance test 22
6:1 General Principles22
6:2 Definition of audio coding bitstream and decoder conformance 22
6:3 Audio Generic Decoder Conformance Test 22
6:4 Lossless Audio Codec Conformance Test 38
6:5 Audio decoder conformance testing process 39
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 4 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:
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document was proposed and coordinated by the National Technical Committee for Information Technology Standardization (SAC/TC28):
This document was drafted by: China Electronics Technology Standardization Institute, Pengcheng Laboratory, Beijing Panorama Information Technology Co:, Ltd:, Shenzhen
DJI Innovations Technology Co:, Ltd:, Tsinghua University, Peking University, Shanghai University of Engineering Science, Huawei Technologies Co:, Ltd:, Zhejiang University, Atmos
(Beijing) Intelligent Technology Co:, Ltd:, Zhongguancun Audiovisual Industry Technology Innovation Alliance:
The main drafters of this document are: Li Jingxin, Zheng Jianhua, Xu Shumin, Zheng Xiaozhen, Dou Weibei, Li Junru, Zhao Haiwu, Gao Yuan, Yu Lu, Pan Xingde,
He Zhichu, Shao Zhenjiang, Qiu Puye, Wang Zhe, Zhang Weimin, Zhao Haiying, Chen Xiaotian, Fan Tao:
Introduction
GB/T 33475 aims to establish methods for efficient compression of digital audio and video media and is intended to consist of 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:
This document is based on GB/T 33475:2-2024 and GB/T 33475:3-2018, and is a revision of GB/T 33475:2-2024:
Requirements and methods for compliance testing of video bitstreams and audio bitstreams of GB/T 33475:3-2018, defining how to design and verify the test
Bitstream and reference decoder to verify whether the tested codec meets the requirements of GB/T 33475:2-2024 or GB/T 33475:3-2018
The requirements of justice:
Information Technology Efficient Multimedia Coding
Part 4: Compliance testing
1 Scope
This document specifies the requirements for the video bitstream of GB/T 33475:2-2024 and the audio bitstream of GB/T 33475:3-2018 to comply with
Requirements and methods for sexual testing:
This document is applicable to the conformity test of bit stream and decoder, which meets the requirements of GB/T 33475:2-2024 or GB/T 33475:3-2018:
Defined requirements:
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/T 33475:2-2024 Information technology - Efficient multimedia coding - Part 2: Video
GB/T 33475:3-2018 Information technology - Efficient multimedia coding - Part 3: Audio
3 Terms and definitions
The terms and definitions defined in GB/T 33475:2-2024 and GB/T 33475:3-2018 and the following apply to this document:
3:1
Used to determine whether the encoded bit stream output by the video encoder and the video decoder and other products comply with GB/T 33475:2-2024
test:
3:2
video test bitstream videotestbitstream
Used to test whether the video decoder complies with the coded bit stream of GB/T 33475:2-2024, that is, the video conformity coded bit stream:
Note: The encoded bit stream must fully comply with GB/T 33475:2-2024:
3:3
The video compliance test is used to determine whether the decoder complies with GB/T 33475:2-2024:
3:4
A known video decoder that complies with GB/T 33475:2-2024 is used to compare with the video decoder under test:
3:5
The video decoder has passed the video conformity test and has been judged to be compliant with GB/T 33475:2-2024:
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