Multimedia data storage method and precise reproducing position positioning method
A technology of multimedia data and streaming media, applied in the multimedia field, it can solve the problems of suboptimal algorithm, unable to play back files, and unable to support real-time playback very well, so as to achieve the effect of accurately locating the playback position.
Inactive Publication Date: 2010-02-17
WUHAN FIBERHOME NETWORKS
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[0005] 1. The audio and video data stored in real time cannot be played back before a common format file is generated. For example, if the audio stream and video stream of T minutes are stored in real time as one file, then within these T minutes (stored in this file) Before the end), this file will not be able to be played back, which will not be able to well support the requirements of real-time playback in some fields, such as real-time playback of surveillance video
[0006] 2. The algorithm of fast forward and fast rewind to search for key frames is not optimal, and the playback server will be subject to the file format of the streaming media storage server for storing audio and video. When the streaming media storage server adopts a new file format to store audio and video , the playback server needs to be modified accordingly
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0027] The present invention provides a kind of storage method of multimedia data, said multimedia data comprises audio stream and video stream, and the concrete steps of storage are:
[0028] (1) When the streaming media storage server starts to store audio streams and video streams, the streaming media storage server first invokes the storage algorithm to generate a data file A for storing audio streams and video streams and a data file A for recording video streams on the storage medium. The video key frame in the index file B of storage position in data file A, said video key frame is I frame;
[0029] (2) The storage algorithm writes the file header information in the index file B, and simultaneously writes the file name of the data file A, the start time and end time of the audio stream and video stream, the video channel to which it belongs, and the fi...
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A multimedia data storage method and a method for precisely positioning the playback position relate to the multimedia technical field. The storage method stores an audio stream and a video stream ina data file A and simultaneously stores the storage position of a video key frame of the video stream in the data file A in an index file B, thereby leading the stored multimedia data to meet the dataretrieval requirements by ordinary play, fast forward, fast rewind and other modes and being capable of playing at the same time of storing without the need of waiting for the finish of the file storage. The multimedia data storage method and the method for precisely positioning the playback position can carry out the real-time storage and the real-time playback of audio and video data and precisely position the playback position.
Description
technical field [0001] The invention relates to the field of multimedia technology, in particular to a method for storing multimedia data and a method for accurately locating a playback position. Background technique [0002] With the development of encoding technology and broadband network technology, video streaming services have developed rapidly. As a new type of application service, IPTV has been widely developed and valued. In the IPTV time-shift system, real-time audio and video data need to be stored in the streaming media storage server, which requires a good data organization method to meet user-specific requirements. demand. [0003] With the improvement of network bandwidth, recording and broadcasting systems in video conferencing systems using Ethernet, and telecom-level video surveillance systems all need to store a large amount of audio and video real-time data in streaming media storage servers for customers to use. [0004] At present, the main problems fa...
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IPC IPC(8): H04N5/91H04N5/93
Inventor 刘金伟贺波涛
Owner WUHAN FIBERHOME NETWORKS