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Transcoding method and apparatus

A technology of transcoding and code rate, applied in the field of transcoding methods and devices, can solve the problems of time consumption, time-consuming, reducing transcoding speed, etc., so as to improve the transcoding speed, save the transcoding time, and achieve clear and smooth playback. Effect

Active Publication Date: 2017-06-16
ALIBABA GRP HLDG LTD
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Problems solved by technology

[0005] In the process of implementing this application, the inventor found at least the following problems in the prior art: in the existing transcoding method, it is necessary to analyze the transcoding parameters of the media file before transcoding to determine the appropriate resolution and code Rate and other transcoding parameters, and then transcode according to the analyzed parameters and output the transcoded media file. Usually, the process of parameter analysis takes a certain amount of time. When a media file needs to be transcoded into a media file with different resolutions When , parameter analysis is required for each definition, which will take a lot of time and reduce the transcoding speed

Method used

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Embodiment Construction

[0027] Embodiments of the present application provide a transcoding method and device.

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0029] figure 1 It is a flowchart of an embodiment of a transcoding method in this application. Such as figure 1 As shown, the transcoding method may include:

[0030] S101: Pre-establish multiple correspondences between different definitions and ...

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Abstract

The embodiment of the application discloses a transcoding method and apparatus. The method comprises: a corresponding relationship between a plurality of definition values and resolution ratios is established in advance; a first definition value and a second definition value are selected from the plurality of definition values and a first resolution ratio and a second resolution ratio that correspond to the first definition value and the second definition value respectively are determined; according to the first resolution ratio and the second resolution ratio, transcoding is carried out on a first part content of a media file according to a preset transcoding rule, and a first real-time quantization parameter value and a second real-time quantization parameter value in the transcoding process are recorded; whether the first real-time quantization parameter value and the second real-time quantization parameter value meet a preset checking rule is determined; if not, the first resolution ratio and / or the second resolution ratio are adjusted; and according to the adjusted first resolution ratio and / or the second resolution ratio, transcoding is carried out on the part without transcoding in the media file. The embodiment of the application discloses a transcoding method and apparatus, so that the transcoding speed of the media file can be increased.

Description

technical field [0001] The present application relates to the technical field of information processing, and in particular to a 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. . Mobile streaming media is a combination of mobile communication and streaming media transmission. It uses streaming media technology to transmit data on mobile terminals through mobile networks, and provides users with services including video on demand, mobile video chat, and mobile video surveillance. [0003] Transcoding is to compress high-definition super-large media files (such as video files) into a format suitable for certain network scenarios (su...

Claims

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Application Information

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IPC IPC(8): H04N21/2343H04N21/2662H04N21/4402
CPCH04N21/234363H04N21/2662H04N21/440263H04N21/234309H04N21/23439H04N21/8456H04N19/132H04N19/146H04N19/184H04N19/40H04N19/436H04N19/59H04N19/124H04N19/46H04N19/126H04N19/30
Inventor 江文斐梅大为储开颜
Owner ALIBABA GRP HLDG LTD
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