Indexing method and system supporting frame accurate positioning of transport stream media file

Abstract

The invention discloses an indexing method for realizing the direct frame accurate positioning of a transport stream (TS) media file. The method for generating indexed for frame accurate positioning comprises the following steps: reading and analyzing TS media data stream information according to international standards; determining the basic structure of a target index file according to the basic information of audio / video data stream of the TS media file; respectively recording stream attribute information recorded in an audio / video data block to generate audio / video secondary indexes; grouping the recorded secondary indexes according to a time sequence to form primary indexes; and duplicating integral audio / video stream information. By using the invention, the reading of a source file in actual positioning is effectively avoided, and direct and fast frame positioning is realized by a two-level indexing method, thereby greatly improving efficiency of reading and querying, and reducing the storing space of a system memory.

Description

technical field [0001] The invention relates to the technical field of program production, in particular to a method for supporting precise frame positioning and indexing of TS streaming media files. Background technique [0002] With the rapid development of multimedia video services, the storage medium of files is not limited to cassettes or optical discs, and TS streaming media suitable for wireless transmission has received more attention. However, in the context of the current national policy of triple play, there are very high requirements for the development of the Internet, TV, and telecommunications. [0003] Transport stream is a kind of data stream defined by MPEG-2. TS (Transport Stream) is the abbreviation of transport stream. It is suitable for the environment where the environment is relatively harsh and the transmission is not stable. It can be performed in a channel environment where serious errors may occur. or the transmission and storage of encoded data ...

AI Technical Summary

Problems solved by technology

[0008] 1. It takes a long time to query streaming media files during editing;

[0009] 2. Editing streaming media files requires a lot of memory space;

[0010] 3. Traditional editing and positioning methods are difficult to achieve fast frame-accurate positioning;

[0011]4. According to the original technology, editing operations such as cutting in video editing must first be decoded to display the results of editing operations, and then encoded and compressed to complete the composite film Purpose, but there will be a certain quality loss for decoding and re-encoding of video and audio frames without any changes

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