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Video transcoding method and device

A technology of video transcoding and pixel transcoding rate, which is applied in the field of video transcoding methods and devices, can solve the problems of low transcoding speed, high computational complexity, and inability to better meet real-time video transcoding, and achieve high transcoding The effect of code speed

Inactive Publication Date: 2013-01-30
HUAWEI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: the video transcoding scheme provided by the prior art needs to fully decode the input code stream, and then re-decode the decoded input code stream. Coding operations such as motion estimation and coding mode judgment have high computational complexity, which makes the transcoding speed low and cannot better meet the requirements of real-time video transcoding

Method used

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  • Video transcoding method and device
  • Video transcoding method and device

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Embodiment Construction

[0026] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] An embodiment of the present invention provides a video transcoding method. By multiplexing information such as image information, motion vectors, macroblock coding types, and prediction residuals in the input code stream, operations such as coding mode judgment and motion estimation are simplified to reduce the cost of transcoding. Computational complexity, improve transcoding speed.

[0028] figure 1 It is a flowchart of an embodiment of the video transcoding method of the pr...

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Abstract

The embodiment of the invention discloses a video transcoding method and a video transcoding device. The video transcoding method comprises the following steps of: decoding an input code stream, extracting macroblock information of the decoded input code stream, and determining a pixel transcoding rate; when the determined pixel transcoding rate is smaller than a preset first threshold value, coding the decoded input code stream according to the macroblock information; and when the pixel transcoding rate is greater than the first threshold value, re-determining a macroblock coding mode according to the macroblock information, and coding the decoded input code stream according to the re-determined macroblock coding mode. On the premise of ensuring the restored video quality, the transcoding speed is improved and the requirement of real-time video transcoding is better met.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a video transcoding method and device. Background technique [0002] With the continuous development of mobile communication technology, the rapid increase of network access speed, the increasingly intelligent mobile terminal, and the increasingly optimized digital compression technology, the mobile terminal has developed from a simple communication and contact tool to a multimedia intelligent platform. . At the same time, traditional value-added services such as MMS and picture and ring download can no longer meet the needs of users. The emergence of mobile streaming media will change this situation. Mobile streaming media can provide users with services including video on demand, mobile video chat, and mobile video surveillance. Mobile streaming media is a combination of mobile communication and streaming media transmission, using streaming...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N19/103H04N19/176H04N19/40
Inventor 唐繁荣郭姗秦浩李兵伟宋彬
Owner HUAWEI TECH CO LTD
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