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Method and system for generating multi-track multi-subtitle on-demand contents by transcoding media files

A technology for media files and subtitles, which is applied in the field of media file transcoding to generate multi-audio-track and multi-subtitle on-demand content, which can solve problems such as freezing and reduce user experience, so as to reduce bandwidth occupation, improve user experience, and reduce transcoding work. amount of effect

Inactive Publication Date: 2018-05-18
上海网达软件股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the process of switching between different subtitles, the video and audio files need to be re-downloaded, which may cause freezes and reduce user experience

Method used

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  • Method and system for generating multi-track multi-subtitle on-demand contents by transcoding media files
  • Method and system for generating multi-track multi-subtitle on-demand contents by transcoding media files

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 2 As shown, the media file transcodes the video, audio and subtitles respectively through the transcoder to obtain the video stream, audio stream and subtitle stream files, and then slices the stream files: after slicing the video stream files, a file in ts format is obtained; After slicing the audio stream file, a file in ts format is obtained; after slicing the subtitle stream file, a subtitle file in WebVTT format is obtained.

[0024] After the stream file is sliced, create the corresponding .m3u8 format file. Sliced ​​files can be reassembled through the index file and restored to the original stream file. After slicing the video stream, audio stream, and subtitle stream and creating their own index files, add the respe...

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Abstract

The invention discloses a method and system for generating multi-track multi-subtitle on-demand contents by transcoding media files. The method is used for transcoding of videos, audios and subtitlesin a transcoding system, and according to the method, video streams, audio streams and subtitle streams can be separately generated by encoding the videos, the audios and the subtitles respectively. The system can return the corresponding video streams, audio streams and subtitle streams to users according to the specific requirements of the users. Compared with the prior art, transferred files ofthe technical scheme of the invention can support the users to dynamically select the audios and the subtitles, the bandwidth occupancy of original multi-channel audios and subtitles can be reduced,and the storage space occupied by the media files can be reduced; and meanwhile, the flexibility of the transcoding system can be improved, multi-language audios and subtitles supported by the media files can be dynamically added, and repeated transcoding of the videos can be avoided.

Description

technical field [0001] The invention belongs to the field of multimedia technologies, and in particular relates to a method and system for transcoding media files to generate multi-audio track and multi-subtitle on-demand content. Background technique [0002] In order to cover more user groups, today's on-demand system provides users with a variety of content. At the same time, in order to meet the viewing needs of different users in different network environments, it is necessary to reduce the bandwidth occupation. For transcoding service providers, it is also necessary to consider file size, transcoding flexibility, and transcoding workload during video transcoding and transmission. [0003] The most typical method at present is to integrate video, audio and subtitles into one media file. For different network environments and output devices, the system will read the transcoded video file. The specific process is: the original Media files are transcoded to integrate all ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/435H04N21/439H04N21/4402H04N21/485H04N21/647H04N21/845
CPCH04N21/4355H04N21/4398H04N21/440236H04N21/4856H04N21/64784H04N21/845
Inventor 唐杰杨健马大江
Owner 上海网达软件股份有限公司
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