Method for rapidly splicing transcoding fragmented file

Abstract

The invention provides a method for rapidly splicing transcoding fragmented files, and belongs to the technical field of computers. The method comprises: writing a video source file into a distributed storage, a distributed storage system providing an unified name space for transcoding service, a plurality of transcoding servers reading the video source file from the distributed storage in a parallel manner, according to time period intervals of fragments, obtaining data corresponding to the time period of the video source file; distributing index numbers of fragmented data segments for transcoding nodes through a transcoding scheduler, to transcode the fragmented data. Through recording length of the fragmented transcoding file, file number, and offset information in an aggregation file in an index entry of aggregation information attribution of the aggregation file, a conventional additional writing-in method is completely abandoned, and time-consuming data reading-writing operation is changed to increasing of attribute information, efficiency for merging transcoding fragmented files is improved, and valuable network bandwidth resources are saved.

Description

technical field [0001] The invention relates to a method for quickly splicing and transcoding fragmented files, which belongs to the technical field of computers. Background technique [0002] As the traditional broadcasting industry has higher and higher requirements for video clarity, from the earliest standard definition era 25Mbps bit stream to the current high definition era 100Mbps bit stream, and then to the future 4K era, the one-hour video rate in the future 4K era The program material file length will reach 180GB. The traditional transcoding scheme is to append and write the fragmented transcoding files to the final transcoding file one by one. The appending writing scheme has a read operation for each fragmented transcoding file and a write operation for the final transcoding file at the same time. The solution consumes both network resources and transcoding node system resources; the traditional transcoding solution can only achieve 1.5 to 2 times the speed, whi...

AI Technical Summary

Problems solved by technology

The traditional transcoding scheme is to append and write the fragmented transcoding files to the final transcoding file one by one. The appending writing scheme has a read operation for each fragmented transcoding file and a write operation for the final transcoding file at the same time. The solution not only consumes network resources, but also consumes transcoding node system resources; the traditional transcoding solution can only achieve 1.5 to 2 times the speed, which is far from meeting the transcoding requirements brought about by the expansion of video data

[0003] As the video sources become clearer and the types of TV programs are more and more, the data volume of the resource system of the radio and television industry reaches the PB level, resulting in a sharp increase in storage demand; at the same time, there are many types of TV station business systems, and the business systems have different storage requirements , have to use multiple sets of storage systems, but information islands are likely to be formed between multiple sets of storage systems, and the construction and maintenance costs are high at the same time, and it is not conducive to unified management

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