On August 22, Beijing time, the Rio Olympic Games officially closed. "As I expected, this is not an Olympic Games that really belongs to VR (virtual reality). The opening and closing ceremonies and events are not set around VR technology. The traditional live broadcast and high-definition shooting are still mainstream." Deputy General Manager of Qiwei Technology Li Xiaobo said.
As a VR practitioner, he wants to experience VR live broadcast and experience another perspective of the Olympic Games. "Now the overall situation is disappointing. More is recorded and on-demand, not a live broadcast live before." Li Xiaobo said.
"Compared with traditional live broadcast, the biggest feature of VR live broadcast is immersion, which is commonly called immersive feeling. The audience can freely choose the angle of view and some details in the scene." Li Xiaobo said, then interaction Sex, traditional TV live broadcast, the audience is passively watching, can only accept the content that the guide let to see; and in VR live broadcast, people can use 3D real-time reconstruction technology to interact with all the people and objects in the scene, that is, each What individuals see is their own unique perspective.
Because of this, for sports audiences, VR is a temptation to refuse: wearing a head-mounted device can watch the panorama of the Olympic Games without leaving the house, and can also watch on the mobile phone or PC by turning the phone or moving the mouse. The scene at 360° panoramic view.
At the same time, the institutions have also stepped in to test the water VR in this Olympic Games.
Not only CCTV, NBC (National Broadcasting Corporation), BBC (BBC), CBC (Canadian Broadcasting Corporation) and OBS (Olympic Broadcasting Service) have invested a lot of energy in VR live broadcasts.
In addition to the opening and closing ceremonies of the Olympic Games, OBS also broadcasts a key event every day; CBC provides 360° live video and VR live broadcast to the audience, and also launches the Rio 2016 application on IOS and Android platforms. It also provides adapter content for Oculus downloads and online viewing on the PC side.
The BBC also received real-time live rights to related events in 360° video. In the opening and closing ceremonies, track and field, basketball and other competitions, the BBC produced a 360-hour 360° video of the event, which can be viewed by BBC Sport for 360° video-customized apps.
However, "I didn't find the relevant channel at all. I tried several portals and couldn't download them. Even the App released by the BBC could not be found in the App Store," said Gao Shuzhen, head of Blue Whale VR PR. Just like the netizen spit, the VR live show has not been seen until now, and it has become a big regret for VR practitioners.
Click on the CCTV VR panorama page to see the VR clips of the men's 110m hurdles final, women's sand platoon and other events. By moving the mouse, the audience can see any angle they want to see.
"These are more recorded and on-demand, not really live broadcasts." Li Xiaobo said. Gao Shuzhen also said: "The VR mentioned in this Olympic Games is mostly recorded and broadcasted."
In terms of picture quality, Li Xiaobo thinks that more is a "set". "Because VR live broadcast is a panoramic position, the camera must be set in a golden position. From the opening and closing ceremonies, the camera is at least 60 meters away from the stage and the stadium. It is basically a position to shoot, in an oblique view, the audience sees The picture can be imagined.†Li Xiaobo explained that the European Cup had tried VR live broadcast, and the camera’s closest distance was only 5 meters.
Of course, not all areas are suitable for VR live broadcasts. Li Xiaobo said that they have done a lot of experiments in sports, variety, news, etc., and found that when shooting a variety show, actors can perform according to the technical characteristics of VR, so as to achieve better results.
However, in sports programs, athletes cannot compete according to the lens, and they can only watch from a distance. This also does not show the technical characteristics of VR.
"Relatively speaking, the venue is small, the project is relatively static, suitable for screen capture, technical difficulty is lower, the effect will be better with VR live broadcast." Xu Xian, vice president of VR VR.
Although people are full of expectations for VR, the emergence and spread of a new technology will inevitably encounter various problems.
"Now, bandwidth is a hard injury. Before 5G is not popular, we need to overcome the algorithm. At present, our own software can support the dynamic adjustment of 1M-20M, and dynamically adjust according to the bandwidth, although it has some influence on the picture quality, but The fluency is very good.†Li Xiaobo said that in terms of hardware, real-time stitching and stitching of different cameras is a big problem. At present, the hardware equipment can guarantee the stitching rate is over 95%.
Li Xiaobo said that 2016 is the first year of VR. From 0 to 1 is a difficult process. The development of analog mobile Internet should take 3-5 years. At the Olympic Games, VR technology will let more people know about VR, and want to try VR, but the development of technology, the production of content is not as fast as people expect.
"At least the first thing to solve the comfort problem of wearing a head-mounted display, and the application is rich in functions, people can buy VR equipment like buying a mobile phone. It is expected that people should have their own VR equipment after 3 years." Li Xiaobo said.
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