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8K game picture real-time transmission, real-time virtual live broadcast, virtual digital human Looking back on the Beijing Winter Olympics, "digital technology" ran through almost the whole audience. What impresses the public most is the virtual live broadcasting technology blessed by black technologies such as AI, AR and VR. Although it is not the first time that it has appeared at the scene of large-scale events, with the continuous iteration and improvement of these technologies, whether it is a new product launch, the company's annual meeting, or the landing application scenes such as the virtual background live broadcasting in which Li Jiaqi is located, the live broadcasting technology enabled by multiple technologies has begun to "evolve" in an all-round way.
ultra low delay has become a rigid demand
Compared with the information content that needs to be recorded in advance, such as text and video, the biggest feature of live broadcast, as a way of information transmission, is that it can realize the real-time transmission of information, and transmit the information at one end of the screen to the audience at the other end of the screen in real time or with low delay.
The evolution history of live broadcasting is the evolution history of "information transmission" to a certain extent. In the early stage, due to the limitation of technology, information is often easy to be lost, delayed and stuck in the transmission process, resulting in the audience in front of the screen can not receive information in real time, complete and high quality. With the iteration of technology, the above phenomena such as delay, jamming and packet loss have been well solved.
Recently, volcano engine, Alibaba cloud and Tencent cloud jointly released a "Signaling standard for ultra-low delay live broadcast protocol", which officially defined the live broadcast "client server" signaling interaction process for the first time, reducing the delay of traditional live broadcast technology from 3 to 6 seconds to less than 1 second. It can be widely used in live events, online education, e-commerce live broadcast and other scenes with high real-time requirements, bringing users ultra-low delay, low Caton Second open smooth live experience.
"One second is just a threshold for the delay of live broadcasting in the industry. The delay of high-quality live broadcasting will certainly be less than one second." Zhou Xin, vice president of poly Wei, an enterprise video SaaS service provider, said in an interview with reporters that if the live broadcast delay is more than 1 second, users can clearly perceive the existence of the delay. Only by pushing the delay to 0.6 seconds can most users be satisfied. In order to realize the communication experience of offline face-to-face chat, the live broadcast delay must be controlled within 0.4 seconds.
Zhou Xin said that his company's delay free live broadcast technology has successfully reduced the live broadcast delay to 0.4 seconds, realizing an almost consistent interactive experience with offline face-to-face communication, and relevant applications have covered a variety of scenarios of education and enterprises.
As a rigid demand of the industry and users, ultra-low delay live broadcasting not only allows users to see the live scene a few seconds earlier, but also brings more innovation space for business and cultural communication. Wei Yunfeng, China Research Manager of IDC, believes that video is becoming the basic element of various commercial and social activities. The upgrading of the real-time capability of live video will greatly expand the boundary of information dissemination.
super portal of commercial meta universe
Under the blessing of multiple technologies, the vision of live broadcasting is certainly not limited to the extreme requirements for delay. The cool application of digital virtual technology on the live broadcast of Spring Festival Gala and the landing of real-time virtual technology on the live broadcast of Beijing Winter Olympics are the "small test" of the evolution of real-time virtual direct broadcasting technology driven by technological innovation and user needs.
Recently, poly way also timely launched the MR live broadcast solution. This technology combines the advanced form of live broadcast of MR, 5g, Al and other related technologies, which can present the effect of interaction between virtual and reality. You can see the highly simulated virtual hybrid world from the perceived world, which greatly improves the immersion of live broadcast.
"Metauniverse is undoubtedly the top stream of the concept of 2021. At present, metauniverse is likely to become the object of active exploration and bold pursuit by enterprises and capital in the next few years, bringing infinite reverie and vision to people's life." Zhou Xin said that as the most core interactive carrier, scene entrance and connection link of the meta universe, virtual digital human has attracted much attention, and Mr live broadcast can build a 3D scene with virtual and real coexistence effect, providing a more adaptive "living space" for virtual digital human.
You can imagine that when virtual 3D space is integrated with digital people, when digital people interact with real people in real time, and when each user can have a virtual identity in the live broadcasting room, the live broadcasting will no longer be an information transmission tool, but a real "social communication + business" space with the combination of virtual and real.
In fact, the "live broadcasting meta universe" created by the industry based on virtual live broadcasting + digital people has begun to test the water. Last year's double 11, jd.com launched a live broadcast activity of "Yuan universe girl vivi Zihan", which uses digital virtual people to interact with users in real time in the virtual live broadcast room. Users can also enter the digital live broadcast room for real-time interaction by borrowing VR glasses, bringing users an immersive 3D full scene experience.
At present, the development of the meta universe is not yet clear, but it is likely to become the next "phenomenal" industry. Before the real landing of the meta universe, under the dual wheel driving force just needed for technological innovation and application, real-time virtual live broadcasting and virtual digital people will likely become super entrances for all walks of life to enter the commercial meta universe.
