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Stream media quick locating on-demand playing method

A streaming media, fast technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of inaccurate positioning, time-consuming precise positioning, poor user experience, etc., to achieve the effect of fast positioning

Active Publication Date: 2015-03-04
苏州航天系统工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are inevitable deficiencies such as time-consuming precise positioning, inaccurate positioning, and poor user experience.

Method used

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  • Stream media quick locating on-demand playing method
  • Stream media quick locating on-demand playing method
  • Stream media quick locating on-demand playing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] 1. The principle of video data packet

[0042] 1. Video data packet header

[0043] The data encapsulated in the header includes synchronization information, payload type, SDK supplier, SDK version, timestamp, packet sequence number, and payload data length. Refer to the specific header format figure 1 shown.

[0044] Specific instance settings:

[0045] Synchronization information: 0xF1F2F3F4

[0046] Load type:

[0047] 0: system header

[0048] 1: stream data

[0049] 2. The principle of fast positioning of streaming media

[0050] In the network, the size of the streaming media file is presented to the user in the form of duration. Through a large number of statistical experiments, it is found that there is a linear relationship between the length (Byte) of the video file played by streaming medi...

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PUM

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Abstract

The invention discloses a stream media quick locating on-demand playing method. The location of an on-demand playing location in a whole video file is calculated based on a scale between an on-demand playing point and a total duration; then the location is used as a benchmark point to look up synchronous identification information of the video packet both in forward direction and backward direction, thereby achieving the quick locating. The stream media quick locating on-demand playing method does not need to decode the video content, and does not need to start from the beginning of the file; the synchronous locating is implemented by comparing the timestamps one by one; the on-demand playing location is directly and expressly located based on the principle of statistics; the locating is quick and accurate.

Description

technical field [0001] The invention relates to the technical fields of multimedia package, fast positioning and synchronization, streaming transmission, on-demand broadcasting, etc., and specifically relates to a fast positioning and on-demand streaming media method. Background technique [0002] Because the amount of video and audio information loaded by multimedia files is very large, if inter-frame coding technology is not used to eliminate time redundant information, it will take up a very large disk space; such files are not conducive to storage or transmission. Therefore, in order to reduce storage space and network transmission requirements, existing multimedia files basically use inter-frame compression coding technology to complete the compression of multimedia video files by eliminating redundant information between multiple frames of video. Since P-frames and B-frames record difference information with I-frames except for I-frames, the reconstruction of these fra...

Claims

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Application Information

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IPC IPC(8): H04N21/472H04N21/8547
CPCH04N21/47202H04N21/47217H04N21/8547
Inventor 魏刚
Owner 苏州航天系统工程有限公司