Playing time control method and device for Internet live video

Abstract

The invention relates to the technical field of the Internet, in particular to a playing time control method and device for an Internet live video. The method includes: obtaining the playing time regulation strategy S and the transmission state ST of a transmission link of the live video contents, wherein the live video contents include one or more than one audio / video code streams; and selecting and modifying the transmitted audio / video code streams according to the S and the ST. The playing time control method and device for the Internet live video can conduct real-time control on the live video contents based on the needs of Internet live videos.

Description

technical field [0001] The present invention relates to the technical field of the Internet, in particular, to a method and device for controlling the playing time of live video on the Internet. Background technique [0002] Live video, because of its real-time nature, has increasingly become an important form of Internet video. Internet video live broadcast can be used in various services such as sports, news, education, and entertainment. [0003] Using the Internet for live video broadcasting, transmission buffering has become a serious constraint factor. Compared with traditional cable TV, the picture of common Internet live broadcasting services is usually several seconds or even minutes slower. [0004] The current live video optimization work focuses more on low-latency encoding on the encoder side, faster data forwarding on the distribution side, and high-performance, low-latency decoding on the playback side, but less attention is paid to how to reduce the transmiss...

AI Technical Summary

Problems solved by technology

[0010] 1. If the control of the transmission link is simply based on a certain distribution end service node, it cannot solve the increase in the playback buffer caused by factors such as the decoding ability of the playback end

[0011] 2. If the control is purely based on the player side, then: general-purpose players, such as flash player and ios embedded player, can support and use limited adjustment methods. If you need to download a special video receiving and processing plug-in on the client side , which will reduce user acceptance; at the same time, this method cannot cope with the phenomenon of stuttering and delay increase caused by limited network bandwidth.

Sometimes in order to reduce the delay, you can use the method of reducing the initial value of the buffer at the playback end. However, when the network bandwidth is unstable, it will cause frequent buffering of video playback. Conversely, in order to ensure smooth playback, increase the initial value of the buffer, and the network will be better. When , the buffer data is wasteful and will cause a large delay

[0013] 4. Different terminal types and different transmission protocols make it difficult to control the playback time with the same method, and it is even more difficult to realize the synchronous playback time control between terminals

[0014] 5. At present, Internet live broadcast mostly adopts a distributed CDN architecture. Video transmission is composed of encoders, source stations, nodes at all levels, and user playback ends, which adds to the complexity of controlling the playback time of end-user playback ends. Spend

[0016] 7. The traditional adjustment method is relatively simple, basically by changing the playback time stamp. The problem with this is that adjusting the time stamp does not change the actual amount of data transmitted and played. If the decoding ability of the player is limited or the network If the bandwidth is limited, the purpose of playing time control cannot be achieved

[0017] 8. Playing time control should also adapt to the multi-bit rate adaptive protocol that is gradually popular on the Internet. When using this type of protocol, the user player can dynamically select the video bit rate, and at the same time, the video data is usually downloaded in pieces instead of being kept at all times. Transmission connections, which have brought new challenges to playback moment control

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