Playing method and device of videos issued by server

Abstract

The invention discloses a playing method and device of videos issued by a server, so that the playing quality of the videos is improved. The method comprises the following steps: acquiring an upper threshold and a lower threshold of a buffer area used for storing video frames, wherein the upper threshold and the lower threshold are determined according to the channel rate of a network; if the current buffer data volume in the buffer area is less than the lower threshold, decreasing the playing rate of the video frames, wherein if the buffer data volumes in the buffer area at adjacent moments are unequal and are both less than the lower threshold, the change rate of the playing rates of the video frames at the adjacent moments is in direct proportion to the size of the buffer data volume in the buffer area; if the current buffer data volume in the buffer area is more than the upper threshold, increasing the playing rate of the video frames, wherein if the buffer data volumes in the buffer area at the adjacent moments are unequal and are both more than the upper threshold, the change rate of the playing rates of the video frames at the adjacent moments is in direct proportion to the size of the buffer data volume in the buffer area.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device for playing video delivered by a server. Background technique [0002] Due to the random end-to-end delay and jitter in the network, when the server transmits the video data to the client through the network, the delay of the video data sent by the server to the client is not the same, and there may even be delays after the video data sent first. to reach the client. In addition, when the network is in a high-load state, the video data sent by the server may lose data packets. These situations will cause the video player on the client side to fail to decode normally, resulting in freezes, jumps, and jitters in video playback. [0003] Client-side buffering technology, that is, the client receives part of the video data in advance before playing the video and stores it in the buffer, which can smooth the impact of network delay, jitter an...

AI Technical Summary

Problems solved by technology

However, the size of the buffer data varies with the random change of the network status, and the smaller buffer data may be exhausted soon under poor network conditions, resulting in buffer underflow, causing the client to The video player does not have data decoding, causing the playback to be interrupted, and the video player cannot continue to play until the video player receives new video data. Although a large amount of buffered data can guarantee continuous video playback to a certain extent, it will cause excessive delay in playback. The real-time performance of video programs is lost, and a large-capacity buffer is required, which increases the memory resource consumption of client devices (such as embedded smart TV terminals)

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