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Video file editing method and device

A video file and file technology, applied to color TV parts, TV system parts, TV, etc., can solve the problem that there is no way to realize arbitrary frame editing

Inactive Publication Date: 2013-04-03
BEIJING QIYI CENTURY SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, only key frames can be clipped, and there is no way to clip from any frame

Method used

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  • Video file editing method and device
  • Video file editing method and device
  • Video file editing method and device

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Experimental program
Comparison scheme
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] figure 1 The flowchart of a preferred embodiment of the video file clipping method of the present invention is shown. See figure 1 , the following is a detailed description of each implementation step of the video file clipping method of this embodiment. In this embodiment, the video file may be a file in flv format formed by h264 encoding.

[0030] Step 10: Determine whether the frame at the beginning of the clip is a key frame or a predicted frame, if it is a key frame, go to step S11, and if it is a predicted frame, go to step S12.

[0031] Step S11: Clip directly from the key frame, and the process ends.

[0032] Step S12: re-encode the predicted frame starting from the clip, and convert it into a new key frame.

[0033] For this step, the specific implementation process is as follows.

[0034] For example, the predictive code of the fl...

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PUM

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Abstract

The invention discloses video file editing method and device and aims to allow for editing from any frame. According to the technical scheme, the method includes: judging the frame starting to be edited is a key frame or predicted frame; if the frame is the key frame, editing from the key frame; if the frame is the predicted frame; and re-coding all predicted frames between the predicted frame and a next key frame so as to allow for editing from the converted key frame after converting the predicted frame starting to be edited into the key frame and converting other predicted frames into converted key frames.

Description

technical field [0001] The invention relates to a file editing technology, in particular to a video file editing method and device. Background technique [0002] After the video file is recorded, it is generally processed by editing, splicing and so on. For example, a news program may be edited into multiple video clips according to each event. There are many kinds of video editing software in the prior art to provide the function of video editing. [0003] A video file is composed of key frames (I frame) and prediction frames (P frame and B frame,) alternately, where I frame is encoded independently and does not depend on other frame data; P frame depends on I frame data; B frame depends on I frame data frame, P frame or other B frame data; the prediction frame is used to predict the change of the key frame, and its codec depends on the key frame. [0004] In the prior art, if the video clip starts from the predicted frame, the clipped file cannot be played, because the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N21/85H04N5/262
Inventor 易念华
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD