Self-adaptive link video downloading method and system

Abstract

The invention discloses a self-adaptive link video downloading method and system. The method comprises the following steps: real-time monitoring real and available downlink bandwidth of the current network and real-time computing a video code rate needing to be played recently of the current video, and sufficiently utilizing various states of each link so that the link is in the state of downloading the video at any time in the network. The network bandwidth is sufficiently utilized, the video downloading speed is accelerated, and the starting playing speed of the video is accelerated, the starting playing speed after dragging the progress chart is accelerated, and the lagging probability in the playing process is reduced.

Description

technical field [0001] The invention relates to the field of video playback, in particular to an adaptive link video download method and system. Background technique [0002] At present, in the field of video playback, when the video starts playing, one or more links are initiated to download video data from the CDN through a video stream address. After the video starts playing and when the progress of the video is dragged, there are also one or more link requests Download, each link downloads a segment of data (patent application number: CN201310596480.8). But this process does not judge the real network bandwidth, so if the network bandwidth is good, you can create more links to download, and if the network is poor, you can create as few links as possible to download (because the link itself needs to consume a certain amount of network. Bandwidth), it is not judged whether the current network bandwidth supports creating multiple links to download video data. If the networ...

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Problems solved by technology

But this process does not judge the real network bandwidth, so if the network bandwidth is good, you can create more links to download, and if the network is poor, you can create as few links as possible to download (because the link itself needs to consume a certain amount of network. Bandwidth), it is not judged whether the current network bandwidth supports creating multiple links to download video data. If the network bandwidth is normal and multiple links are created to download video data, it will increase useless overhead and cause the download speed to slow down.

In addition, the real bit rate of the video is not judged, so different videos are downloaded using the same number of links, but for videos with a very low bit rate, too many links will increase the network overhead and indirectly reduce the download speed

If the code rate is too high and the number of connections is too small, the real network usage efficiency will be reduced

[0003] Mainstream video streams are fragmented data streams, and each fragment needs to go through three stages: connecting to the server (server), downloading data, and closing the link after the download is completed. There is a certain amount of time in all three stages. There is no detailed processing for video downloading. There is no video data download in the two stages of connecting to the server and closing the link after the download is completed, and the downlink bandwidth is not fully utilized to maximize the effect.

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