Alibaba Cloud Edge Cloud helps the Tokyo Olympics HD on-demand, enjoy the wonderful moments of the Olympics

Introduction to On July 22, IOC President Bach said at a press conference held in Tokyo that for the first time this year's Olympic Games will use Alibaba Cloud to support global broadcasting. This is an important step for the Olympics to enter the digital age. The official website of the Olympic Committee has become one of the important channels for global media reporters and audiences to watch daily highlights and awards moments. Behind the frequent real-time access to the website content, stable, smooth and safe video content distribution It is indispensable to ensure the ultimate game viewing experience with low latency, low lag, and smooth seconds.

On July 22, President Bach of the International Olympic Committee said at a press conference held in Tokyo that this year's Olympics will use Alibaba Cloud to support global broadcasts for the first time. This is an important step for the Olympics to enter the digital age. The official website of the Olympic Committee has become one of the important channels for global media reporters and audiences to watch daily highlights and awards moments. Behind the frequent real-time access to the website content, stable, smooth and safe video content distribution It is indispensable to ensure the ultimate game viewing experience with low latency, low lag, and smooth seconds.

The long-term precipitation of Alibaba Cloud Edge Cloud in technical fields such as CDN, cloud security, and audio and video provides a highly reliable and experience-upgraded live on-demand solution for the Tokyo Olympics, creating a wonderful audio-visual feast.

Globalized edge cloud nodes to build the best audio and video infrastructure

Alibaba Cloud has 2800+ edge cloud nodes around the world, with excellent link quality and high availability, and integrates recent access, intelligent routing, transmission protocol optimization, and multiple load balancing technologies to ensure the best transmission. A single node has the capability of big data storage and high bandwidth, which can easily cope with the surge in traffic. Relying on the widely distributed edge cloud nodes all over the world, Alibaba Cloud has built the global real-time audio and video transmission network GRTN, which analyzes the health status of all nodes and links through the streaming media brain and intelligent scheduling system, and selects the best access method for users.

Video on demand is a one-stop audio and video on demand solution that integrates audio and video collection, editing, uploading, automatic transcoding processing, media resource management, efficient cloud editing processing, distribution acceleration, and video playback.

Video live broadcast is an audio and video live broadcast platform based on leading content access and distribution networks and large-scale distributed real-time transcoding technology. It provides convenient access, high-definition smooth, low-latency, and high-concurrency audio and video live broadcast services. The video live broadcast service also supports real-time interaction and tens of millions of concurrency, and the ultra-low playback freeze rate ensures a smooth experience. It can provide customers from five continents with high-quality, millisecond-level delay live broadcast services.

Newly upgraded solution capabilities in large-scale event live broadcast scenarios

The Alibaba Cloud Edge Cloud large-scale event live broadcast escort solution has successfully supported hundreds of large-scale events including the previous Olympic Games, Asian Games, World Cup, and e-sports finals. It is the "tests" of large-scale event broadcasts that have continuously improved product and technical capabilities. The experience gained from these scenarios has enabled Alibaba Cloud to formulate complete solutions and comprehensive emergency plans for high video concurrency scenarios.

Low latency, multiple audio tracks, high picture quality, comprehensively enhance the playback experience

Alibaba Cloud Edge Cloud ultra-low-latency live RTS releases mobile and PC-side push-stream RTS SDK plug-ins to improve the streaming quality of the entire industry and provide a low-latency, low-latency, safe and reliable live-streaming experience. The downlink supports ultra-low latency distribution, and the uplink supports RTS streaming that is more resistant to weak networks. The end-to-end delay is reduced from 1.5 seconds to 800 milliseconds. The playback end realizes the RTMP/FLV second opening effect and lower stall rate. Because the RTMP protocol does not support multiple audio tracks, the mainstream solution in the market is to achieve multiple audio tracks by simultaneously broadcasting multiple streams, that is, the player can switch between different language interpretations by switching between two streams, which increases the complexity of the full-link audio track alignment. It’s impossible to switch audio tracks seamlessly. Alibaba Cloud's single-stream multi-audio track technology reduces the complexity of the link and improves the fluency and comfort of audience switching. Through the repair and enhancement of the quality film source, the picture quality is improved, and the high-definition experience is brought. Optimize the encoding for high-definition content, reduce the bit rate and save bandwidth with the same image quality. For low-latency scenes, the use of machine learning analysis and fitting takes into account the fast and lower coding delay and high image quality and high compression rate. Based on scene detection, recognition and adaptive coding optimization. For example, in a game scene, if the coding decision based on the traditional MSE is used, it is very easy to cause the so-called "ghosting". For this problem, subjective distortion-based RDO optimization is carried out, so as to adaptively decide small blocks to achieve "ghosting" elimination. The algorithm guarantees subjective quality when the code rate drops by 40%.

product innovation to enhance content richness and interactivity

The cloud director capability supports real-time subtitles and translation capabilities, recognizes the game commentary as text and adds it to the live stream in the form of subtitles, and supports multi-language translation. The virtual studio uses real-time background matting to integrate the anchor and richer virtual backgrounds such as videos and pictures into a live stream. It supports multiple devices, multi-cameras, and remote broadcasts, and realizes dual-screen, split-screen, picture-in-picture and other broadcast capabilities , Not only reduces the decoration cost of the live broadcast room, but also further enhances the richness and immersion of the live broadcast content.

Cloud security technology

Facing the live broadcast scene of large-scale events and events, the live broadcast service of Alibaba Cloud Edge Cloud not only improves the user experience but also enhances the security of the live content. It not only supports HTTPS, anti-theft chain, and multiple authentication schemes, but also further upgrades and expands product capabilities in terms of live content. Matrix, through the live DRM encryption capability, supports the mainstream Widevine and Fairplay DRM solutions in the industry, covers multiple terminals and multiple platforms, realizes one-stop content management, and protects copyright security. The digital watermarking (dark watermarking) capability can also support the forensics, traceability and accountability of copyright infringements in the live broadcast of large-scale events. Alibaba Cloud uses a variety of security technologies to detect and protect in all directions to ensure live broadcast security.

The Olympics brings the world together, let us cheer for the Chinese Olympics and enjoy the new Olympic experience on the cloud!

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