GB/T 33665-2023 in English
VALIDTechnical requirements and detecting method of audio and video for digital publication
- Issued on:2023-12-28
- Implemented on:2023-12-28
- File Format:PDF
- Delivery:Via email within 1~3 business days
$262.00
《GB/T 33665-2023数字出版物声频视频技术要求及检测方法》由TC527（全国新闻出版标准化技术委员会）归口，主管部门为国家新闻出版署（国家版权局）。
Introduction
GB/T 33665—2023 Standard Interpretation
GB/T 33665—2023, the National Standard of the People's Republic of China, "Technical Requirements and Test Methods for Audio and Video of Digital Publications", is an important standard for regulating the quality of audio and video in the field of digital publishing. Compared with the old version GB/T 33665—2017, the new standard has made many improvements and updates in technical parameters, term definitions and test methods.
Comparison of Standard Frameworks
| Items | Improvements in the New Standard | Contents Used in the Old Standard | ||
|---|---|---|---|---|
| Deleted Definitions | Added Technical Requirements | Retained Core Terms | Optimization of Detection Methods | |
| Interlaced Scan | Added Ultra High Definition Video Parameters (4K/8K) | Channel and Surround Sound Definitions | Update of Detection Equipment | |
| Progressive Scan | Added Technical Requirements for 3D Sound | Encoding Format Requirements | Storage media expansion (such as mobile hard disk) | |
Core parameter interpretation
High-quality audio requirements: Dual-channel needs to reach a sampling frequency of 192kHz, surround sound and 3D sound need to reach 96kHz, and the quantization accuracy is 24bit. These parameters ensure that the sound quality of digital publications reaches professional standards.
Ultra-high-definition video standards: Support 16:9 aspect ratio, 8K resolution (7680x4320) and progressive scan mode. New technical requirements include higher frame rate (120Hz) and precise color coordinate parameters to ensure more delicate visual presentation.
Implementation recommendations
- Related enterprises are advised to strictly follow the GB/T 33665-2023 standard during the production process to ensure that the audio and video quality meets the standards.
- For enterprises upgrading their technology, it is recommended to use ultra-high-definition equipment to meet the production needs of 4K and 8K content.
- In the testing phase, it is recommended to use professional equipment that meets the technical requirements of GB/T 31493 and calibrate the equipment regularly to ensure the accuracy of the test.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB 9028.1-1988 in English
performance requirements for meteorogical facsimile (analogue)
- -
GB/T 28182-2024 in English
Surge arresters containing series gapped structures with rated voltage 52 kV and less
2024-05-28 -
GB/T 8145-2021 in English
Gum rosin
2021-10-11 -
GB/T 37820.1-2024 in English
Ships and marine technology—Design, location and use of shipboard safety signs, fire control plan signs, safety notices and safety markings—Part 1: Design principles
2024-04-25 -
GB/T 14563-2020 in English
Specification and test method of kaolin clay
2020-06-02 -
GB/T 38133-2019 in English
Genetically modified alfalfa detection method by real-time PCR
2019-10-18 -
GB/T 50772-2012 in English
Code for construction of timber engineering
2012-05-28 -
GB/T 28843-2024 in English
Management requirement for traceability in food cold chain logistics
2024-05-28 -
GB/T 19782-2023 in English
Chinese prawn
2023-12-28 -
GB/T 36479-2018 in English
Integrated circuits—Test methods for column grid array
2018-06-07
