Video transmission method and device, equipment and medium

Abstract

The invention discloses a video transmission method and device, equipment and a medium, and the method comprises the steps: obtaining an image sequence, carrying out the real-time coding of the imagesequence based on a preset coding rate, and obtaining a corresponding key frame or coded frames so as to obtain a target frame group, wherein the target frame group comprises a key frame and a plurality of coded frames after the key frame; segmenting the acquired key frame or coded frames in real time based on a data packet segmentation length to obtain a plurality of data packets; filling the data packet with the data packet header information based on a preset data packet format to obtain a packaged data packet; and sending the packaged data packet to a receiving end based on a first presettime interval, so that the receiving end recombines the key frame and the coded frames based on the data packet header information of the packaged data packet to obtain a video picture. According to the method, H264 and H265 video stream transmission congestion, frame loss and the like can be improved in a poor network environment with large signal interference, weak signals and the like or a network environment with limited throughput.

Description

technical field [0001] The present invention relates to the field of video transmission, in particular to a video transmission method, device, equipment and medium. Background technique [0002] During the transmission of the H264 or H265 stream, there is roughly one key frame and several coded frames every 2 to 4 seconds, and the size of the key frame is more than tens of KB, or even more than a hundred KB, and the data volume of the coded frame is small, usually It is only a few KB, so when transmitting key frames, there will be a burst of large data transmission, and the Wifi network is insufficient for the burst of large data transmission, not only easy to reach the transmission bottleneck, but also easy to lose packets, resulting in instantaneous congestion. At present, on the basis of TCP (i.e. TransmissionControl Protocol, Transmission Control Protocol) or UDP (i.e. User Datagram Protocol, User Datagram Protocol) for code stream transmission, after sending a data pack...

AI Technical Summary

Problems solved by technology

[0002] During the transmission of the H264 or H265 stream, there is roughly one key frame and several coded frames every 2 to 4 seconds, and the size of the key frame is more than tens of KB, or even more than a hundred KB, and the data volume of the coded frame is small, usually Only a few KB, so when the key frame is transmitted, there will be a burst of large data transmission, and the Wifi network is insufficient for the burst of large data transmission, not only easy to reach the transmission bottleneck, but also easy to lose packets, resulting in instantaneous congestion

At present, on the basis of TCP (that is, Transmission Control Protocol, Transmission Control Protocol) or UDP (that is, User Datagram Protocol, User Datagram Protocol), the code stream transmission waits for the receiver to feedback the receiving status after sending a data packet. If it fails, it will continue to resend the packet, that is, it will perform real-time detection on each data packet on the Wifi network to determine whether it is successfully sent. If no feedback is received after timeout, the data packet will be resent. It is easy to cause the sent data packets to be continuously resent, resulting in the failure of subsequent data packets to be sent, causing video stream delays, congestion, frame loss, etc.

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