Method and device for editing video file

Abstract

The invention discloses a method for editing a video file. The method comprises the following steps of: buffering acquired video sample and audio sample respectively; according to starting time sample and sample; picking up and decoding the video audio samples which are synchronized for previewing, simultaneously configuring a file header, generating a fragment file, continuously writing the video audio samples which are synchronized in the fragment file; and according to the information on whether the video sample in the fragment file is a key frame, determining a dividing point of the fragment file, adding the index information to the fragment file in which the video audio samples which are synchronized are written, and generating the whole fragment file. The invention also provides a device for editing the video file. Based on the method and the device, the video fragment file which is finally released can be generated when the video fragment file is being edited in real time, so that the release flow is shortened, and the editing efficiency is improved.

Description

technical field [0001] The invention relates to streaming media editing technology, in particular to a method and device for editing WMV format video files. Background technique [0002] With the rapid development of network video applications, Internet users have more and more demand for network video. Many network video service providers have begun to use video and text information dissemination solutions to replace traditional text and pictures. Some TV stations have also begun to adopt online live broadcast and online on-demand video solutions, and then extended to mobile terminals such as mobile phones, and have also begun to provide users with live broadcast and on-demand video services. [0003] In existing video service solutions, video files need to be processed by a video editing system before they can be published. The format of video files edited and generated in the video editing system depends on the technology used in the entire video solution. Currently, mai...

AI Technical Summary

Problems solved by technology

The index information at the end of the file is used to locate the file in the WMV file. Without the index information, the file cannot be randomly located, and then the video editing operation cannot be performed on a certain section of the file in a WMV file. Therefore, the traditional The WMV video editing system is based on files, users must edit a WMV video file after it is completely generated

For network video service providers, they always hope that their video programs can be published on the network in the shortest possible time, especially some video programs that require high real-time performance, such as emergency reports, etc. If the release is late , the timeliness of the program will be greatly reduced, resulting in a reduction in the value of the program

[0005] However, with the traditional WMV video editing system, the network video service provider must wait until the complete video file is received before editing the file. video file

In this way, the efficiency of editing and generating the final released video files is very low; moreover, the entire cycle of video file processing is relatively long, which will seriously affect the timeliness of video files

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