Shulou(Shulou.com)11/24 Report--

CTOnews.com September 25 news, Hangzhou Asian Games officially opened on September 23, Beijing time, China Mobile Migu company announced as the official holding rights broadcaster, in this Asian Games live broadcast service, in Migu video, Migu video love to watch version to create AVS3 color vision on-demand zone, AVS3 live view angle, and support HDR Vivid localization standard technology.

▲ AVS3 on-demand area, picture source China Mobile Migu official news, the same below

▲ AVS3 live broadcast angle Migu Company said that this is the first time in the industry to realize mobile AVS3 +HDR Vivid localization standard fusion point live broadcast large-scale commercial, and in the small screen pilot 2K / 4K+HDR Vivid, large screen pilot 8K + double Vivid, in order to promote China's independent intellectual property rights video and audio standards end-to-end landing is of great significance.

▲ AVS3 + HDR Vivid According to introduction, in the mobile terminal business, the Mobile device chip is still dominated by overseas technical standards, and the chip's support for domestic technical standards is still in the initial stage, resulting in the problem that the native environment of the Mobile device cannot support high-quality AVS3-point live video playback.

In order to enable users of Migu video to obtain a more realistic immersive visual experience during the Asian Games, and in order to cope with the risks that overseas chip power cuts and standard charges may bring to China's audio and video industry, Migu R & D team has carried out technical innovations from AVS3 video head-end encoding, terminal decoding, terminal rendering and transmission architecture respectively. CTOnews.com summarizes as follows:

At the head end, AVS3 coding standard is adopted, which improves coding performance by 50% compared with H265 coding under the same quality. AVS3 50fps 10bit real-time coding based on general purpose CPU server is realized through intra-frame parallelism and frame-level parallelism technology, which effectively improves the performance of 1080P 10bit 50fps real-time coding. In terms of color processing, Migu realizes the AVS3 standard conversion of H265 format metadata, and realizes the synchronous compatibility of HDR Vivid metadata on the encoding side with H265 and AVS3.

In the terminal, Migu self-research team realized the industry-first pure software decoding of AVS3 10bit and HDR Vivid based on mobile phone terminal in iOS and Android terminals respectively, which did not depend on hardware chip computing power and broke through the restriction of chip neck on AVS3 standard application. Even if the user's mobile phone chip does not support the decoding of AVS3 10bit encoded video, it supports more than 270 mobile phones to watch, providing users with 10bit HDR Vivid immersion experience.

In terms of transmission technology, AVS3 streaming media service architecture based on linear extension supports large-scale non-homologous AVS3 live stream parallel streaming media forwarding service, and realizes AVS3 low-delay live stream dual-link high-reliability production transmission and terminal playback frame tracking and buffer control technology.

In addition, China Mobile Migu optimized the HDR Vivid metadata automatic generation algorithm based on the HDR Vivid standard. According to human perception characteristics, curve curvature and threshold segmentation points of each section of the mapping curve are adjusted, which reduces the overall brightness compression rate, color cast and contrast loss of the original image displayed on the target display terminal, improves the display effect of highlights and dark details, avoids the problems of highlight overexposure and missing dark details, and finally realizes the ideal HDR Vivid end-to-end rendering effect in the event scene.

China Mobile Migu Company said that in the future, it will further improve the application effect and system efficiency of state-owned technical standards, and promote and apply them to other major competitions, explore the application prospect of series of state-owned technical standards represented by AVS3 and HDR Vivid technology, fully reflect the application value of state-owned ultra-high definition technical standards, so as to contribute to the improvement of China's strength in the global audio-visual entertainment field. At the same time, China Mobile Migu Company will continue to cooperate closely with industry alliance partners, continuously strengthen the application of state-owned technical standards, cope with possible neck risks, and realize independent and controllable audio and video industry chain.

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