Method, system, server and storage medium for adaptive transmission of streaming media

Abstract

The present application discloses a method, system, server and storage medium for adaptive transmission of streaming media. The method includes: judging whether the current video stream to be transmitted can meet the preset transmission conditions by tailoring the current video stream to be transmitted. Whether the current video frame in the current video frame group can be cropped, wherein, the current video frame group includes multiple video frames, and the encoding method of the video frame is the advanced frame skipping reference mode; if the current video frame can be cropped, select the code The rate compression ratio is smaller than the current bit rate compression ratio, and the clipping scheme with the smallest difference between the current bit rate compression ratio, and the current video frame is clipped according to the selected clipping scheme; if the current video frame cannot be clipped, then Send the current video frame to the receiver. Through the above method, the present application can adaptively adjust the code rate of streaming media output, and the compatibility is better.

Description

technical field [0001] The present application relates to the field of video technology, in particular to a method, system, server and storage medium for adaptive transmission of streaming media. Background technique [0002] With the gradual development of the fifth generation mobile communication technology (5th Generation Mobile Networks, 5G) and other technologies, various applications based on cloud video conferencing technology, such as telemedicine or distance education, have begun to emerge; Compared with the online video conferencing business, the cloud video conferencing server has a large amount of concurrency, and Internet deployment leads to uncontrollable network quality. Therefore, a high-performance streaming media adaptive method is needed, which can automatically adjust the streaming media output according to the network conditions. The bit rate ensures smooth video viewing. [0003] Most of the existing cloud video conferencing uses the Selective Forwardi...

AI Technical Summary

Problems solved by technology

[0002] With the gradual development of the fifth generation mobile communication technology (5th Generation Mobile Networks, 5G) and other technologies, various applications based on cloud video conferencing technology, such as telemedicine or distance education, have begun to emerge; Compared with the online video conferencing business, the cloud video conferencing server has a large amount of concurrency, and Internet deployment leads to uncontrollable network quality. Therefore, a high-performance streaming media adaptive method is needed, which can automatically adjust the streaming media output according to the network conditions. High bit rate to ensure smooth video viewing

[0003] Most of the existing cloud video conferencing uses the Selective Forwarding Unit (SFU) architecture to operate. Usually, the terminal uploads three code streams with different encoding qualities, and the server selects one code stream to deliver according to the network detection results. Realize adaptive streaming media, but there are the following problems: the picture that the user sees may suddenly freeze for a short period of time, and the image encoding quality and even resolution of different bit rates are inconsistent, resulting in blurred and clear pictures when switching. poor experience

At present, although there are measures to improve this transmission method, it may still cause short-term lag; or consume a large amount of Central Processing Unit (Central Processing Unit, CPU) resources, which greatly reduces the access capability of a single node, and The image effect becomes worse; or the requirements for the decoder of the terminal are high, it is difficult to form a unified solution for various types of terminals, and the actual residual code rate is relatively large

Images