A system and method for a frame-accurate tape callback file
A file system and file technology, applied in electrical components, image communication, selective content distribution, etc., can solve the problems of overall time-consuming prolongation, user experience degradation, etc., to save remaining space, reduce file transfer process, and save maintenance cost effect
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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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