"From the beginning of the live broadcast to the end of the hand has not stopped"

On February 4, the opening ceremony of the Beijing 2022 Winter Olympics was perfectly staged, and Chinese presented a romantic feast of ice and snow for the world in their own way. Behind this visual feast, from on-site broadcasting to literary writing, from art design to technical support, the staff of many positions of the Central Radio and Television Corporation participated in it to ensure the perfect presentation of the opening ceremony of the Winter Olympic Games.

Opening and Closing Ceremonies Literature Chief Writer Yu Lei: More than 600 documents document the creative process

Yu Lei is the general director of "National Treasure" of China Central Radio and Television Corporation, and the chief writer of literature for the opening and closing ceremonies of the Winter Olympic Games. In her computer, these more than 600 documents record the polishing process of the team's creative ideas over the past three years. She introduced, "A lot of ideas, more than two years, nearly three years ago has been locked, after such a long little bit of polishing and practice process, let it more and more beautiful." ”

At the opening ceremony, the countdown to the twenty-four solar terms received numerous praises in a new way of expression. Yu Lei introduced that at the beginning of the idea, they prepared three versions of the plan in the light text link, and finally decided to use ancient poems to show the meaning behind the festival. "[In it] we incorporate rich expressions into it, and then we include Chinese emotions, Chinese philosophy, our history, our attitude toward nature towards the world."

Chen Yan, Art Director of the Opening Ceremony:

What you see is beautiful, what I see is security

Chen Yan of the Central Radio and Television Station served as the art director for the opening ceremony of the Winter Olympics. He said that this wonderful presentation stems from the combination of technology and art. The moment when the big snowflake carrying the last torch slowly rose was his most exciting moment. "When the snowflakes rose, I shouted, and everyone cheered that the snowflakes were floating, but what I saw was that it was safe. We throw away the traditional pen, take the technology as our magic pen, we have to do beautiful and romantic things, there is a lot of pressure behind it, we can be foolproof, relying on the spirit of innovation and rigorous work attitude. ”

Liu Xin, head of the broadcast control field of the opening ceremony: We are millisecond-level broadcasts

It is understood that at the opening ceremony, the broadcast control system, AR system and rendering system, are fully guaranteed by the Central Radio and Television General Station Technology Bureau, in the stage performance area of the LED display, nearly 16K super display in The country is the first time, in order to better express the dazzling picture of the opening ceremony, the stage LED image for the first time using 50 frames per second playback frame rate technology.

Liu Xin, senior engineer of the Technical Bureau of the General Station and head of the broadcast control field of the opening ceremony of the Beijing 2022 Winter Olympic Games, introduced that the CCTV General Station Technology Bureau selected 26 elites to participate in the opening and closing ceremony technical support activities, "The first part is the broadcast control field, and the large screens on the ground that everyone sees, including the display of the façade, as well as the display of the north and south screens, are all operated by us." The second is the AR system, which is in the construction snowflake of the program, in which several shots are the integration of ar snowflakes, and this virtual reality technology is supported by the main station. In addition, there is a large rendering system, because this time the ground screen is nearly 11,000 square meters, plus the large screen on both sides can reach 15,000 square meters, which can be said to be the largest in the world. Another feature is that this time we are using a playback rate of 50 frames, the previous large-screen display graphics are all 25 frames, 50 frames of the picture is more detailed, and the color reproduction is better. Liu Xin revealed that this live broadcast, everyone's pressure is very large, "We are millisecond-level playback." The amount of information broadcast by the subtitles alone is more than 300, so basically we have not stopped from the beginning of the live broadcast to the end. ”

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Central Video: AI generates digital snowflakes

On the evening of February 4, the world's eyes were on a sparkling snowflake in the center of Beijing's nest. Each delegation has its own "little snowflake" at the opening ceremony, and when they come together, they merge into a "big snowflake", and the "digital snowflake" representing the hundreds of millions of users of CCTV floats into the bird's nest, which is also spectacular. Up to now, a total of more than 15 million users have participated in the "Digital Snowflake" series of interactive activities, #Come to Central Video to See the Winter Olympics#, #Digital Snowflake#, #My Winter Olympics Digital Snowflake# and other related topics have been read by 385 million people on the whole network, and have accumulated 17 times on the multi-platform hot search list.

"Digital Snowflake" as an interactive project launched by CCTV for the Winter Olympics, users upload selfies, choose styles, and a "digital snowflake" with an exclusive "avatar" embedded in the center is born, which is behind ai technology at play. Through AI image recognition technology, interactive pages accurately identify faces in user photos in milliseconds, thereby generating a personalized digital snowflake image for users.

The event also uses cloud rendering services to generate and save each user's personalized "Drift into the Winter Olympics" experience video, ensuring that each digital snowflake falls on a unique path and perspective. What is particularly special is that in the experience video, the central video uses AI algorithms to match each video with a different 8-second drifting snow background music, and adds a different color to each user's exclusive Winter Olympic memory with smart notes.

Text/Reporter Zu Weiwei

Source: Beijing Youth Daily