Live broadcast data transmission control method and device and live broadcast equipment

Abstract

The invention discloses a live broadcast data transmission control method and device and live broadcast equipment. The method comprises the following steps: acquiring a transmission code rate, a packet loss rate residual error and a packet loss rate residual error change rate at a t moment, a packet loss rate residual error and a code rate control quantity at a t-1 moment and a packet loss rate residual error at a t-2 moment; obtaining three control coefficients at the moment t according to the packet loss rate residual at the moment t and the packet loss rate residual change rate at the moment t; obtaining a code rate control variable at the moment t according to the three control coefficients at the moment t, the packet loss rate residual at the moment t, the packet loss rate residual at the moment t-1 and the packet loss rate residual at the moment t-2; obtaining the code rate control quantity at the t moment according to the code rate control quantity at the t-1 moment and the code rate control variable at the t moment; obtaining the transmission code rate at the t + 1 moment according to the code rate control quantity at the t moment and the transmission code rate at the t moment. The sending code rate can be dynamically changed, the network congestion condition is effectively relieved, the bandwidth utilization rate is improved, and thus the live broadcast data transmission effect is improved.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to a live data transmission control method, device and live broadcast equipment. Background technique [0002] In order to ensure the real-time performance of the video, the existing network video live broadcast often adopts the connectionless User Datagram Protocol (User Datagram Protocol, UDP) or the Real-time Transport Protocol (Real-time Transport Protocol, RTP) to transmit the data stream. However, since UDP does not have mechanisms such as congestion control, packet loss detection, and packet loss retransmission, when the network fluctuates, packet loss is more serious. [0003] In order to reduce the occurrence of such situations, the method of reducing the sending code rate by gradient can be adopted at present, that is, when the network fluctuates, the amount of data sent is reduced. Specifically, the preset range can be set, as long as the network quality is i...

AI Technical Summary

Problems solved by technology

However, because UDP does not have congestion control, packet loss detection, packet loss retransmission and other mechanisms, when the network fluctuates, the packet loss phenomenon is more serious.

[0003] In order to reduce the occurrence of such situations, the method of reducing the sending code rate by gradient can be adopted at present, that is, when the network fluctuates, the amount of data sent is reduced. Specifically, the preset range can be set, as long as the network quality is in the preset range Within the range, the same amount of sent data is immediately reduced, but not all need to reduce the same amount of sent data within the range, which will lead to low bandwidth utilization and poor live data transmission effect

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