Method and device for fast start-up of ultra-high-definition video live broadcast
A technology for live video and clear video, applied in the field of live video, which can solve problems such as reducing the user's playback experience, delaying the live screen, and slowing down the playback speed.
Active Publication Date: 2021-05-11
北京数码视讯软件技术发展有限公司
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Problems solved by technology
However, for ultra-high-definition video live broadcast, especially for ultra-high-definition video with high resolution, high bit rate and high video frame rate, the I frame in the GOP data may be very large. When live broadcasting data, even if the first frame of data sent is I frame data, it may take a long time for the live broadcast end to receive the first frame of data, resulting in slow broadcasting speed and degrading the user's playback experience
In addition, for ultra-high-definition video live broadcasting, the current live video live broadcast system generally caches one or more GOP data at a fixed time. The cached GOP data has different cache duration and data length. If the time is too long, it will also reduce the user's playback experience
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031]In recent years, with the rapid development of video codec technology and screen display technology, people's pursuit of video playback experience is getting higher and higher. As the country is vigorously promoting broadband speed and price reduction, and 5G networks are about to be launched into official commercial use, ultra-high-definition Video transmission provides extrem...
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The present invention provides a method and device for quickly starting an ultra-high-definition video live broadcast, and relates to the technical field of video live broadcast. Live broadcast parameters, according to the live broadcast parameters and the currently received video live broadcast data, the live broadcast cache data can be cached, and the live broadcast cache data can be quickly sent to the live broadcast end, so that the live broadcast end can quickly start broadcasting the live broadcast cache data. According to the above-mentioned live broadcast parameters and predetermined algorithm, calculate the shortest cache duration of the live cache data that currently needs to be cached, and automatically update the live cache data in real time according to the shortest cache duration and complete GOP requirements. The live broadcast buffer data that meets the shortest buffer duration reduces the phenomenon of picture freeze or excessive delay after the start of the broadcast; and the live broadcast buffer data is sent to the live broadcast end at a fast sending speed, which improves the start speed of the live broadcast end; thereby improving improved user playback experience.
Description
technical field [0001] The present invention relates to the technical field of live video broadcasting, in particular to a method and device for quickly starting an ultra-high-definition video live broadcasting. Background technique [0002] In recent years, with the rapid development of video codec technology and screen display technology, people's pursuit of video playback experience is getting higher and higher. The mainstream TV screen size has gradually developed from 40 inches to 55 inches, 60 inches, 70 inches, and even 100 inches. More inches, large screens have higher and higher requirements for video resolution. 1080P (1920*1080) high-definition video can no longer meet the requirements of large-screen playback and display, and ultra-high-definition video has become the standard configuration for large-screen playback and display; At the same time, ultra-high-definition video brings people the ultimate high-definition visual enjoyment, and is becoming more and more...
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IPC IPC(8): H04N21/2187H04N21/231H04N21/433
CPCH04N21/2187H04N21/231H04N21/23106H04N21/4331
Inventor 刘义亮
Owner 北京数码视讯软件技术发展有限公司