State Administration of Press, Publication, Broadcasting and Television recently released the "Notice on Regulating and Promoting the Development of 4K Ultra High Definition Television", which provided policy guidance for standardizing and promoting the healthy and orderly development of 4K ultra high definition television.Jiang Su, Deputy Director, Science and Technology Department, State Administration of Press and Publication, SARFT In an interview with a reporter from China Press and Publication Bureau, Sichuan said that in China, 4K ultra-high-definition television has entered a new round of development with the increasing prosperity of the 4K ultra-high definition television display terminal market and the development of high-quality program broadcast and broadcasting technologies Development Opportunity The development and maintenance of ultra-high definition television can not be accomplished in one step and must be strengthened in many aspects, including technical standards, program broadcasting, program transmission, terminal reception, policies and programs that require relevant technologies, programs, industries and funds Policy guidance, scientific planning, improve technical standards, good application pilot.
Has launched 4K ultra-high definition television program broadcast test
In recent years, the world's 4K ultra-high definition television technology and industrial chain are gradually maturing, some developed country TV operators have launched 4K ultra-high definition television business. In 2014, the first 4K ultra HD channel was launched in Korea. After that, radio and television broadcasters and network operators in Europe, North America, South Korea and Japan launched more than 70 4K ultra-HD channels based on cable, satellite and IPTV platforms.
Up to now, the types of 4K Ultra HD channels mainly include sports, movies, TV dramas, news, arts, entertainment and documentaries. Sports programs account for the largest proportion, accounting for about 23% of the total. Films, arts and cultural programs and documentary programs account for the largest proportion Followed by both 16% to 19%; news shows accounted for the smallest proportion, only 1%.
The satellite transmission has many unique advantages such as large bandwidth, high speed, wide coverage and so on. At present, carriers that broadcast 4K Ultra High Definition Channel in Europe, North America, Japan and South Korea tend to transmit by satellite. According to relevant statistics, The transmission of 4K Ultra HD channels accounted for 49% of the total; 4K Ultra HD channels based on cable, IPTV and OTT transmissions accounted for 15%, 24% and 12%, respectively; Launched terrestrial wireless 4K Ultra HD channel.
Despite the increasing number of 4K Ultra HD channels being broadcast, 4K Ultra HD Channel currently unavailable due to limited availability of 4K Ultra High Definition (HD) channels, such as Japan's Sky perfecTv 4K movie Channel, using the daily carousel broadcast 3-4 times way; the United States Fashion One 4K channel, a total of 12 programs a day interspersed with broadcast, each program duration of about 15 minutes.
In China, CCTV and other television stations in Beijing, Shanghai, Guangdong and Hunan have already conducted 4K super high definition television program broadcast test. The cable TV networks in Beijing, Sichuan, Shenzhen, Guangdong, Hunan and Chongqing have successively launched the 4K experience Area service; China Telecom, China Mobile and China Unicom, the three major operators have released a 4K ultra-HD on-demand, push and other services; Youku, music, millet and other manufacturers also introduced 4K Ultra HD OTT receiver box in the broadcast form and Reception, 4K ultra HD business mainly on-demand, push-based, there is no full-channel 4K ultra-high definition channel broadcast.Ken said that the business due to lack of program sources, receiving terminal decoder chip and display device performance limitations, Its '4K Ultra HD Program' frame rate is mostly 25P, the color gamut range of mostly high-definition color gamut, the vast majority of programs do not use HDR (High Dynamic Range) production, therefore, did not meet the technical standards of 4K ultra-high definition television .
Program formats and related technical standards need to be improved
Sun Suchuan introduced China as a big country in radio and television. Considering the wide range of applications of ultra-high definition video coding, high industrial value and intellectual property issues, China has independently developed video coding technology for 4K ultra-high definition television applications and has enacted the video coding technology in 2016 The "high-efficiency audio and video coding Part 1: Video" standard, referred to as AVS2.0, which is China's 4K ultra-high definition television video coding standard.In 2017, the State Administration of Press, Publication and Broadcasting released "4K ultra-high definition television program production and exchange Parameter values "industry standard, the technical format of our 4K ultra-high definition television programs standardized.In addition, China led by the CCTV, the joint research institutions are still carrying out high dynamic range radio and television industry standards and 3D Audio (3D Audio) broadcast television Industry standard research and development work.
Sun Suchuan said that relative to Japan, Europe and the United States, China's 4K ultra-high definition television is still in its infancy. The development environment, industrial support conditions, program formats and related technical standards have yet to be further improved, and a complete end-to-end industry has yet to be formed Chain and ecological chain.She thinks, there are five aspects of the problem to be solved.One is the program issues.Consulting 4K ultra-HD programming into a large, complex system construction, the short term is difficult to recover the cost.Although some domestic television stations and production agencies made a number of 4K Ultra-high-definition programs, but the overall production cycle is long, the number of programs is small, has not yet formed a scale, at this stage can not support 4K channel 24-hour non-repetitive content broadcast.
The second is the transmission problem. 4K ultra-high-definition television transmission data volume is more than 10 times the ordinary high-definition television, whether in the wired, wireless or satellite transmission, the existing transmission system needs to be modified and configured 4K receiving terminal, a Aspects of the already very tight bandwidth of radio and television transmission is a huge challenge, on the other hand will also increase the receiving costs.
Third, industrial issues In accordance with the technical development plan, China's 4K ultra-high definition video encoding to be adopted AVS2.0 standards, but at present the domestic industry has not yet formed a large-scale mature commercial product line.
The fourth is the funding problem.Currently, the development of 4K ultra-high-definition television is similar to the problems of the early HDTV development. A television station that produces and broadcast 4K ultra-high definition television programs needs a large amount of capital and equipment to transform the technical system and can not recover the cost in the short run.
Fifth, the standard issue.At present, although the international standardization organization for the 4K ultra-high definition television set more than 70 standards, but our country can not be completely copied.China's 4K ultra-high definition television development should not only consider the international standards, but also based on their own National conditions, considering supporting national industries and independent intellectual property rights and other issues, in order to avoid falling into foreign patent disputes, but also need to increase the independent intellectual property rights of technology and standards research and promotion efforts.
Attaches great importance to promoting the development of 4K ultra-high definition television
"The development of 4K Ultra High Definition Television is an important measure taken by the press, radio, film and television departments to implement the strategy of central innovation-driven development, promote the integration of culture and science and technology, and deepen the structural reform of radio, film and television supply-side. To meet people's growing spiritual and cultural needs, Radio and television broadcasting power, influence and guidance of public opinion to promote and promote the cultural industry and national industrial development are of great significance. "Sun Suchuan said the SAIC attaches great importance to promoting the development of 4K ultra-high definition television, carried out five aspects.
First, the development of 4K ultra-high-definition television into the 'Thirteen Five' science and technology development plan.The program proposed the development of China's ultra-high definition television plan and goal: By 2018, the establishment of 4K ultra-high definition television OTT platform to build high-definition, 4K ultra-high definition television Mixed broadcast system; by 2020, to achieve 4K Ultra High Definition TV test channel broadcast from the current situation of progress, the overall development of China's 4K ultra-high definition television is relatively stable, and the planning target is basically the same.
The second is to release guidelines for promoting the development of 4K ultra-high definition television The General Administration's Circular on Regulating and Promoting the Development of 4K Ultra-High Definition Television further clarified the basic principles, advancing strategies and objectives for developing 4K ultra-high definition television, It is instructive to regulate and promote the development of ultra-high definition television in our country.
Thirdly, to strengthen cooperation with relevant industry departments such as the Ministry of Industry and Information Technology, etc. The General Administration of Industry and Information Technology has established a coordination mechanism for promoting the development of 4K ultra-high definition television and strengthened cooperation in standard setting, industrial support and application and promotion to jointly promote Development of 4K Ultra High Definition Television in China.
The fourth is to speed up the development of 4K ultra-high definition television standards.An organization to organize the relevant units to study and put forward our country 4K ultra-high definition television standard system table, and in accordance with the priorities to determine the standard formulation program.Among them, '4K ultra-high definition television program production and exchange parameters' 'High dynamic range television program production and exchange of image parameter values'' Advanced sound system for program production '' The three basic 4K Ultra HDTV standards have been compiled and rolled out in succession.
Fifthly, we will support the first trial of 4K ultra-high definition television in Guangdong Province. Considering that the promotion of 4K ultra-high definition television in Guangdong has a good policy foundation, economic basis and industrial foundation, in September 2017, the State Administration of Press, Publication, Radio, Film and Television and the Guangdong Provincial People's Government Signed the Memorandum of Cooperation on Promoting the Application and Industry Development of 4K Ultra High Definition TV in Guangdong Province, and supported Guangdong to give full play to its industrial advantages in high-end equipment, codecs and other areas, enhance the industrial maturity of related products, and support our own knowledge of 4K Ultra High Definition The development of property rights technology and national industry will provide reference for the Administration to gain experience in the further development of 4K ultra-high definition television throughout the country.