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Method and device for video editing

A technology for video editing and video files, applied in the field of video editing, can solve the problems of incomplete video frame data, time difference, and inability to play, and achieve the effect of improving playback quality

Inactive Publication Date: 2018-12-21
WUXI TVMINING MEDIA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, some video editing software can perform non-linear editing on the source video file, and can search the video according to user instructions until the split point is found, and divide the video into multiple video clips, and then combine the video clips to be watched into one Play a new video file, this operation is very fast, but there may be a time difference between the audio and video in the new video file, or some video frame data is incomplete and cannot be played, etc.

Method used

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  • Method and device for video editing
  • Method and device for video editing
  • Method and device for video editing

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment 1. In this embodiment, the memory unit is set to be 100M bytes. see figure 2 , the process of video editing in this embodiment includes:

[0064] Step 201: Read the data of the set memory unit of the source video file to the cache.

[0065] The capacity of the cache is limited, for example, 100M bytes. In this way, the data of 100M bytes of the source video file is read into the cache.

[0066] Step 202: Determine whether the end point of the data in the buffer is the end point of the complete video data frame? If yes, go to step 203 , otherwise go to step 204 .

[0067] It is possible that among the 100M bytes of data, the last data end point is the data end point of a complete video data frame, then step 203 is performed. If the end point of the 100M byte data is not the data end point of a complete video data frame, step 204 is performed.

[0068] Step 203: Determine the end point of the data in the cache as the processing end point. And go to step ...

Embodiment 2

[0079] Embodiment 2. In this embodiment, the memory unit is set to be 200M bytes. see image 3 , the process of video editing in this embodiment includes:

[0080] Step 301: Read the data of the set memory unit of the source video file to the cache.

[0081] The capacity of the cache is limited, for example, 200M bytes. In this way, the data of 200M bytes of the source video file is read into the cache.

[0082] Step 302: Check the data in the cache for complete frames, and determine the data end point of the last complete video data frame in the data as the processing end point.

[0083] Among the 200M bytes of data in the cache, the data end point of the last complete video data frame may be the 200M byte, then the 200M byte can be determined as the processing end point, or it may be the 195th byte. Then the 195th Mbyte can be determined as the processing end point.

[0084] Step 303: Determine whether the point-cutting time is within the range of the earliest timestamp ...

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Abstract

The invention discloses a video clipping method and apparatus used for improving the playing quality of a clipped video file. The method comprises: reading data of a source video file setting memory unit to a cache; performing complete frame data check on the data in the cache, and determining a data ending point of a final complete video data frame in the data as a processing ending point; and performing video clipping on the data before the processing ending point. After the read data are subjected to the complete frame data check, only the complete video data frame is clipped, so that the clipped video file still comprises the complete video data frame, the situation of no playing due to incomplete data does not occur, and the playing quality of the clipped video file is improved.

Description

technical field [0001] The invention relates to the field of multimedia technology, in particular to a method and device for video clipping. Background technique [0002] With the development of multimedia technology, the playback of video, audio, pictures, etc. has been widely known by users. When performing multimedia playback, such as video playback, the user may not need to watch the entire video content, or may only want to watch some of the clips. In this way, the video needs to be edited, and several fragment files are cut from the source video file according to requirements, and then merged into a new video file for playback. [0003] At present, some video editing software can perform non-linear editing on the source video file, and can search the video according to user instructions until the split point is found, and divide the video into multiple video clips, and then merge the video clips to be watched into one Playing a new video file is very fast, but there ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/433H04N21/44H04N21/8547
CPCH04N21/4331H04N21/44004H04N21/44016H04N21/8547
Inventor 武悦
Owner WUXI TVMINING MEDIA SCI & TECH