A streaming connection scheduling method suitable for multi-server adaptive streaming media system
An adaptive streaming media, multi-server technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as unsatisfactory performance, inability to obtain bandwidth fairly, occupying large bandwidth resources, etc., to ensure robustness , ensure fairness, and simplify the effect of connection
Active Publication Date: 2021-02-02
WUHAN FENGHUO KAIZHUO TECH CO LTD
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Problems solved by technology
In this way, when a player requests data by establishing multiple streams, it can occupy a large amount of bandwidth resources
while other players who build a small number of streams will not get their fair share of bandwidth
In addition to this, existing algorithms have shown unsatisfactory performance in multi-server adaptive streaming systems in terms of effectiveness and stability.
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[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0042] The system framework of the present invention is as figure 1As shown, the core algorithm mainly includes two parts: flow reduction algorithm and scheduling performance evaluation. The specific implementation steps are as follows:
[0043] Step 1, generate the media description file MPD: the streaming media server will encode the media content provided by the streaming media content provider with different bit rates, and the bit rates are {b 1 ,b 2 ,...,b L}, and b 1 2 L , where for any i and j if ii j , and then align and cut content copies of various bit rates into fixed-size (2-10 seconds) content slices, and then aggregate parameter information such as the bit rate, slice length, and data download URL of each content copy to form a media description file;
[0044] Step 2, establish a streaming connection: the streaming media client initia...
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The invention discloses a stream connection scheduling method applicable to a multi-server self-adaptive stream media system, which generates a media description file according to media content, establishes a stream connection between a stream media client and a stream media server, and pre-downloads the media description file ; Each stream connection caches media content slices according to the bit rate corresponding to the network throughput, evaluates its data transmission performance according to the data transmission status of each stream connection, performs stream connection scheduling according to different stable conditions, and evaluates the performance improvement of stream scheduling. The evaluation result selects whether to perform flow recovery operation. The invention can not only evaluate the quality of the scheduling strategy, but also provide reference for the system to deal with the change of the network condition. While simplifying the connection, it will not lose the robustness and high fault tolerance brought by the multi-server to the streaming media system.
Description
technical field [0001] The invention belongs to the field of dynamic self-adaptive streaming media transmission based on the HTTP protocol, and in particular relates to a stream connection scheduling algorithm of a server self-adaptive streaming media system. Background technique [0002] With the development of the Internet, especially the development of emerging Internet services represented by online video and webcasting, the demand for bandwidth of streaming media services has gradually become the main demand for Internet bandwidth. Streaming media technology has gradually developed from a traditional connection-oriented protocol to a stateless adaptive streaming protocol based on HTTP. This streaming media solution based on the HTTP protocol has many advantages over traditional streaming media solutions, such as reusable existing HTTP infrastructure (including servers, proxies, and caches), reliable transmission, and easy passage through firewalls, etc. . [0003] In ...
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IPC IPC(8): H04N21/845H04N21/858H04N21/84H04N21/2385
CPCH04N21/2385H04N21/84H04N21/8456H04N21/8586
Inventor 彭凯肖勤邦彭麟雅谭蘅睿张胜凯桂宾王栋云胡国亮
Owner WUHAN FENGHUO KAIZHUO TECH CO LTD