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Method and system for transcoding multimedia slices based on overlapping boundaries

A multimedia and slicing technology, applied in the field of multimedia transcoding, can solve problems such as blurring, distortion, and deterioration of multimedia effects, and achieve good results and remove boundary blurred areas

Active Publication Date: 2011-01-19
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003]However, in the traditional transcoding method of multimedia slices, when splicing transcoded slices, the position of the cutting boundary is often distorted or blurred, resulting in multimedia effects become worse

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  • Method and system for transcoding multimedia slices based on overlapping boundaries
  • Method and system for transcoding multimedia slices based on overlapping boundaries
  • Method and system for transcoding multimedia slices based on overlapping boundaries

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Embodiment Construction

[0022] Such as figure 1 As shown, a multimedia slice transcoding method includes the following steps:

[0023] Step S10, cutting the multimedia according to preset units to obtain multiple slices. Multimedia can be video, image or audio, video can be segmented temporally or spatially, images can be segmented spatially and audio can be segmented temporally. The cut multimedia is divided into multiple parts of the same length or size, which are called slices.

[0024] Step S20, acquiring the blur region length of the slice. In one embodiment, such as figure 2 As shown, the specific process of step S20 is:

[0025] Step S210, selecting at least two consecutive slices. In a preferred embodiment, two consecutive slices can be selected for processing. For example, for a 100-frame video file, cut in units of 2 frames to obtain 50 slices, then select the first two slices.

[0026] Step S220, transcoding the selected slice.

[0027] Step S230, detecting the boundary fuzzy regi...

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Abstract

The invention provides a method for transcoding multimedia slices, which comprises the following steps: slicing a multimedia according to a preset unit so as to obtain a plurality of slices; obtaining a fuzzy-region length of the slice; carrying out redundancy (redundant length: the fuzzy-region length) on the two ends of each slice; transcoding the slices subjected to redundancy; removing the parts (with the fuzzy-region length) of the two ends of the slice subjected to transcoding; and splicing the slice which is removed the parts with the fuzzy-region length. The invention also provides a system for transcoding multimedia slices. The method and the system for transcoding the multimedia slices can remove more boundary fuzzy regions and obtain better multimedia effect in the process of splicing the slices subjected to transcoding.

Description

technical field [0001] The present invention relates to the technical field of multimedia transcoding, in particular to a transcoding method and system for multimedia slices based on overlapping boundaries. Background technique [0002] Multimedia transcoding includes video transcoding, audio transcoding, and image transcoding. Video transcoding refers to converting a compressed and encoded video stream into another video stream to adapt to different network bandwidths, different terminal processing capabilities, and different user needs. Traditional video transcoding does not slice a single video, but directly transcodes it, or slices a video and then transcodes it. Slicing refers to cutting a video in time and space, for example, cutting a video into several parts in units of multiple frames, or cutting a frame of image into several parts in space. After the video is sliced, a cutting boundary will be generated, and multiple slices obtained after cutting can be transcode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/26H04N7/66
CPCH04N21/234309H04N21/44209H04N21/8456H04N19/00472H04N19/40
Inventor 朱定局
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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