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System and method for frame precision tape file callback

A file system and file technology, applied in electrical components, image communication, selective content distribution, etc., can solve the problems of prolonging the overall time-consuming and reducing the user experience, saving the remaining space, reducing the file transfer process, and saving maintenance. cost effect

Active Publication Date: 2015-03-25
BEIJING ZHONGKE DAYANG INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This implementation method is undoubtedly unable to meet the conditions for users with high frame accuracy requirements.
In this case, the transcoding center needs to be transcoded again to meet the user's requirements. In this way, the overall download time will be prolonged and the user experience will be reduced.

Method used

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  • System and method for frame precision tape file callback
  • System and method for frame precision tape file callback

Examples

Experimental program
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Effect test

Embodiment 1

[0038] This embodiment is a frame-accurate tape callback file system, including: an archiving center connected to the request segment download end, the archiving center is connected to a tape library and a storage disk array, and the archiving center includes: task receiving and Assignment unit, the task receiving and assigning unit is connected to the file judging unit, the file judging unit is connected to the file preprocessing unit, the file preprocessing unit is connected to the filing unit, and the task receiving and assigning unit Connect with the dot download unit, the dot download unit is connected with the output unit, such as figure 1 shown.

[0039] The request segment downloader is an external system, which may be a video editing system, a video broadcasting system, and the like. Two requests are usually issued, one is to archive the file, which is to upload the edited video file to tape. Another request is to download a video file on tape for playback or editin...

Embodiment 2

[0073] This embodiment is a frame precision tape recall file method using the above system. The basic idea of ​​this embodiment is to process the three types of files differently when archiving:

[0074] For the intra-frame format, the original method is used for accurate frame-accurate downloading. That is, after receiving the in-out point information of the download task, calculate the number of bytes corresponding to the location of the physical file on the tape according to the in-out point information, read the file after precise positioning, and obtain the specified downloaded file.

[0075] For inter-frame format files, when creating index information during the archiving process, set the number of offset frames at the beginning and end, and then adjust the number of offset frames obtained from the bottom layer when downloading to achieve the purpose of frame-accurate downloading and obtain accurate After offsetting the frame, calculate the number of bytes relative to ...

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Abstract

The invention relates to a system and method for frame precision tape file callback. The system comprises a filing center connected with a file end requesting segmented downloading. The filing center is connected with a tape library and a memory disk array and comprises a task receiving and assigning unit. The task receiving and assigning unit is connected with a file judging unit, the file judging unit is connected with a file preprocessing unit, the file preprocessing unit is connected with a filling unit, the task receiving and assigning unit is connected with a dotting downloading unit, and the dotting downloading unit is connected with an outputting unit. According to the system and method, different dotting modes are adopted for segmented video files of different formats, each dotting position is accurately calculated, and therefore a user can find required video segments rapidly; for the overall downloading process, the link of transcoding after calling-back can be omitted, the file transferring procedure in the transcoding link is omitted, and therefore the online disk array free space can be saved, and the maintenance cost can be lowered. Because the overall downloading process is shortened, the user can obtain needed resource files more rapidly.

Description

technical field [0001] The invention relates to a system and a method for calling back files on a frame-accurate magnetic tape, which is a computer digital processing system and method, and a digital processing system and method for video files. Background technique [0002] As a TV station content support system, the media asset management system plays a very important role and status. One of the characteristics of media assets is reuse. Most TV stations will download files when using media assets to achieve the purpose of resource reuse. In order to save the storage space of the online disk array, most of the media assets files have been archived into the tape library as nearline files. The file may not be the whole file, but a specific file, which requires another function, click to download. [0003] Previously, the point-and-shoot download function of the archive center could not download files in some formats completely according to the in-out point specified by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/432H04N21/433H04N21/845
CPCH04N21/4325H04N21/433H04N21/440236H04N21/8456
Inventor 李永葆褚震宇李伟杜伟刘秀何焱韩利明郭志芳胡海琴邹娟
Owner BEIJING ZHONGKE DAYANG INFORMATION TECH CO LTD
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