Shulou(Shulou.com)12/24 Report--

The UWA Alliance held UWA Summit and the World Ultra High definition Video Industry Alliance General meeting in Shenzhen from November 21 to 23. During the exhibition, Tencent Video exhibited a demonstration of AVS3 + HDR & Audio vivid national standard full link self-research high-quality technology, bringing a comprehensive upgrade of audio-visual experience for the majority of users.

UWA Alliance Exhibition site Pictures

Data from the 2023 China Internet Audio-visual Development Research report shows that as of December 2022, the number of Internet audio-visual users in China has further expanded to 1.04 billion, with a utilization rate of 97.4 percent. It can be seen that under the wave of mobile Internet in the past decade, with the gradual improvement of intelligent devices and wireless network infrastructure, network audio-visual consumption has become an absolute rigid demand for the Internet.

With the popularity of 5G network, smartphones and tablet devices have been further upgraded, not only in the improvement of chip, memory and other parameters, but also in the performance of the display screen has changed qualitatively. From LCD to OLED, pixel resolution, refresh frame rate, contrast and other parameters have improved year by year, especially in color range, dynamic range and other essential changes, promoting the overall market to support ultra-high definition, HDR upgrade transformation. Thanks to the huge market demand and perfect Internet software and hardware foundation in our country, the UHD video industry has developed rapidly and steadily, and has become one of the most dazzling business sectors in the whole Internet industry.

However, behind the prosperous market and industry, the key supporting technologies have always been held by foreign organizations and institutions, and the resulting patent copyright and technology regulation have separated the dividend cake of China's ultra-high-definition industry. it also limits the independent development of technology and products, and ultimately affects and damages the user experience and rights and interests.

As a leader in the Internet industry, Tencent has long adhered to the business philosophy of focusing on user value, while doing a good job in the role of "Internet connector". Also actively think about, explore and practice how to give back to society by scientific and technological means to promote the healthy development and upgrading of the industry. In the face of the current situation of the development of the ultra-high definition industry, the company coordinates a number of professional teams at the group level, taking Tencent Video, an online streaming media content and service platform that is widely favored by domestic users, as the main position to actively promote the industrial application of AVS3, HDR Vivid and Audio Vivid to form a full-chain domestic video standard benchmarking project from production, generation, coding, distribution and playback. Help the magnificent turn of domestic standards from paper release to commercial closed loop.

Video traffic has been the largest source of Internet traffic for a long time, and with the increase of resolution, frame rate and pixel depth, the bandwidth and traffic required for transmitting ultra-high-definition video are unbearable for video platform operating costs and end-user traffic charges. The latest generation of video coding and compression national standard AVS3 not only has the natural advantages of domestic independent intellectual property rights, but also has an intergenerational improvement in key technical performance compared with H.265 / HEVC released in 2013. As for this audio and video codec standard with independent intellectual property rights, Tencent has been a deep participant and firm practitioner, strongly promoting the development of standards and the landing of technology. According to statistics, Tencent Multimedia Lab has more than 150 technical proposals adopted by AVS standards organization, served as the chairman of several special groups, and won the AVS Industry Technology Innovation Unit Award. On October 17, 2023, the results of the latest well-known MSU 4K video coding competition were announced, and the TencentAVS3 encoder developed by Tencent Multimedia Lab achieved remarkable results. In the competition of encoders, as the first national standard AVS3 encoder to participate in the MSU 4K track, its 1fps speed gear all five indicators are better than the participating H.265 / HEVC and AV1 encoders. All five indicators show that under the test conditions of the competition, the TencentAVS3 encoder can save nearly 40% bandwidth at the same speed compared with the widely used H.265 / HEVC encoder scheme x265.

With the AVS3 encoder with high compression performance to protect the bandwidth cost, you can have the strength to ensure that users can see clearly, and on this basis, how to make full use of the screen capabilities of mobile phones and other playback devices to make everyone see more "real" and more "telepresence" is the next problem that needs to be overcome. Founded in December 2019, China Ultra High definition Video Industry Alliance CUVA (in 2022, it was officially registered as an international community organization by the Ministry of Civil Affairs of the people's Republic of China, and the World Ultra High definition Video Industry Alliance UWA). Its core goal is to promote the end-to-end link of the video industry, formulate and promote domestic HDR standards. To provide users with full-link standards for film production, distribution and playback that are more in line with the characteristics of the human eye and truly restore the intention of the film creator. Since the establishment of the alliance, Tencent Video has served as a permanent director unit for a long time, making efforts and contributions in technical solutions, content ecological upgrading, commercial applications and other aspects.

In January 2021, Tencent Video was the first Internet content platform in the industry to launch HDR Vivid film sources. Through the system integration and application of a series of self-developed cool techs technologies, such as self-built HDR color shed, intelligent image inverse tone mapping, intelligent image salient region protection, dynamic metadata analysis and generation, Tencent Video has constructed a complete HDR Vivid technology chain. The products rooted in the relevant technology have been hatched into the colorful audio-visual brands that represent the highest audio-visual quality of the platform, bringing delicate restoration and immersive picture quality presentation to Tencent Video's users. By the second half of 2023, the HDR Vivid services provided by Tencent Video can cover all types of terminal devices, including Android, iOS / macOS, Hongmeng, Windows, web, etc., and the type and number of HDR Vivid sources also cover the entire content of the platform. In addition, Tencent Video also led the organization in drafting the alliance standard T / UWA 005.3-6-2023 "Technical requirements and test methods for playing software equipment for high dynamic range (HDR) video technology", and actively participated in the construction of metadata, quality assessment, and other important standards.

With people's unremitting pursuit of sound restoration and quality, as well as the continuous innovation of science and technology, audio technology continues to develop. From mono to stereo, surround sound and three-dimensional sound, people's audio and video experience of "authenticity" and "immersion" has been continuously improved. As an important part of UHD experience, 3D sound technology provides a sense of space, orientation, high degree of reduction and high degree of immersion, bringing a more infectious sense of presence, personalization and interactive experience for the audience. Three-dimensional Color Sound (Audio Vivid) is committed to solving the whole link of sound from construction to restoration, and can be widely used in home environment, cinema environment, personal, AR / VR, car and other fields. The self-developed panoramic sound algorithm is adopted to highly restore the sense of space and timbre, and provide users with a "real" and "immersive" experience through three-dimensional Audio Vivid.

Around the practice and application of AVS3, HDR & Audio Vivid standards, Tencent Video has created a complete UHD independent research and development technology, products and service system. Tencent will continue to implement the R & D concept of "technology serves art", and will constantly bring surprises to content creators and ordinary end-users with advanced technology.

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