Method for storing and reading multi-code-rate stream file and relevant device

Abstract

The invention discloses a method for storing and reading a multi-code-rate stream file and a relevant device. According to the method disclosed by the invention, a multi-code rate file included in a media asset file is subjected to slice processing; an index file is added into a stream file formed by slicing each code rate; sliced files of the multi-code-rate stream file are reassembled and stored under one media asset file, so that media asset resources consisting of the multi-code-rate stream file and small sliced files are benefited to be compatible to a traditional digital television front-end system; and meanwhile, the querying and reading efficiency of the sliced files is increased.

Description

technical field [0001] The invention relates to the technical field of triple network integration, in particular to a method for storing and reading multi-bit-rate stream files and related devices. Background technique [0002] The integration of the three networks means that the telecommunications network, the digital TV network and the Internet are interconnected and share resources. In the context of triple play integration, multi-bit rate adaptive media service protocols are increasingly welcomed by operators. [0003] In the prior art, the multi-bit-rate self-adaptive media files used in triple play are often sliced ​​and stored directly on the disk, and a string is usually composed of a bit rate and file name to generate a directory , store the file fragments of the program at a specific bit rate in the directory. The fragmented files are often relatively small after slicing, and the media files are relatively large. Therefore, thousands of fragmented files will be ge...

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Problems solved by technology

[0003] In the prior art, the multi-bit-rate self-adaptive media files used in triple play are often sliced ​​and stored directly on the disk, and a string is usually composed of a bit rate and file name to generate a directory , store the file fragments of the program at a specific bit rate in the directory. The fragmented files are often relatively small after slicing, and the media files are relatively large. Therefore, thousands of fragmented files will be generated after slicing. Querying sharded files while reading is very inefficient

[0004] However, in the technical proposal with the application publication number CN 102238434A published on November 9, 2011, inserting key frames or tags for indexing into fragmented files is beneficial to improve query efficiency, but for continuous reading, caching It brings inconvenience, reduces the efficiency of disk reading, and increases the complexity of business software, and this method only provides a storage method for single-bit-rate files, but does not solve the storage problem of multi-bit-rate files

[0005] Therefore, in view of the existing basis that a single media asset ID only corresponds to one video file in the traditional radio and television operator's system, and the media assets composed of multi-bit rate files and small fragmented files are difficult to be compatible with the existing system The problem is that it is necessary to provide a storage and reading technology for multi-bit rate stream files, so as to use the existing network architecture to realize the distribution of multi-bit stream files and improve the query efficiency of fragmented files

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