Method and system for segmenting streaming media

Abstract

The invention relates to a method and a system for segmenting streaming media. The method comprises the following steps of: parsing a streaming media ES (Elementary Stream); calculating the optimal sequence value of a streaming media ES segment time stamp according to a time stamp sequence of a obtained random access point and the given expected segment duration, by using a minimum maximum numerical value optimization method, and by taking the minimum maximum value in a difference sequence of each segment duration and the given expected segment duration as an optimization target; and segmenting the streaming media according to the optimal sequence value. According to the method and the system provided by the invention, segment files meeting an HLS (HTTP Live Streaming) protocol can be generated, namely, the different segment durations belonging to a same multimedia stream can be approached as far as possible, thereby lowering the requirement on a buffering mechanism of a terminal player; and simultaneously, the stability of the system operation is ensured, the segment files can be played smoothly, and the quality of viewing experience of users is improved.

Description

technical field [0001] The present invention relates to the technical field of streaming media, and more specifically, to a streaming media non-transcoding slicing method and system. Background technique [0002] The HLS protocol (HTTP Live Streaming, HLS) is an HTTP-based streaming media communication protocol formulated by the Internet Engineering Task Force (IETF) (see http: / / tools.ietf.org / html for details of the protocol) / draft-pantos-http-live-streaming-08). In recent years, the HLS protocol has been widely used in the field of streaming media, because the protocol uses HTTP transmission, which can adaptively adjust the code rate according to the network bandwidth, which allows the server to store multiple multimedia streams with different code rates for the same program content. The terminal can adaptively adjust the code rate of the multimedia stream to be downloaded according to the actual network download speed. When the network bandwidth is tight, the terminal c...

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Problems solved by technology

[0009] On the other hand, since the size of each slice file may not be similar, the terminal cannot make a more accurate estimate of the size of the slice file before downloading the slice file, that is, the terminal cannot estimate the size of a certain slice according to All slices are allocated a large enough dynamic memory space at one time

If the allocated dynamic memory space is too small, the terminal needs to stop downloading when the dynamic memory is exhausted, and open up a new memory space, which will bring additional overhead to the system operation

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