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Video transcoding method and device

A video transcoding and transcoding technology, applied in the field of video transcoding, can solve problems such as low upload efficiency, long transcoding time, and increased resource consumption

Active Publication Date: 2019-12-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, re-transcoding generates the media file corresponding to the existing code stream and the media file corresponding to the newly added code stream in the media asset medium. On the one hand, it increases resource consumption and increases the cost of transcoding; on the other hand, This leads to long transcoding time and low loading efficiency

Method used

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  • Video transcoding method and device

Examples

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example 1

[0092] image 3 It is a schematic flowchart of a video transcoding method provided in the embodiment of the present application. As an example, this method can be applied as figure 2 The video transcoding system shown is of course not limited thereto. This embodiment is described by adding a media file of the second code stream in the target media asset medium as an example. That is to say, before performing S101, the target media asset medium contains at least one stream of media files. Example 1: Take the video "The Wandering Earth" as an example, and the target media assets of this movie already have media files of three code streams (media files 1-3 marked as code streams). Among them, the media files 1 to 3 of the code stream all belong to the same media asset medium, for example, the encapsulation protocols of the code streams corresponding to the media files 1 to 3 of the code stream are all DASH, and the encoding formats are all H.265. Moreover, the resolutions of...

example 2

[0139] 2), when the encapsulation protocol of the code stream in the target media asset medium is HLS, and the format of the index file of the target media asset medium is M3U8 format, based on example 2, (the difference between example 2 and the above example 1 is that The type of the media asset medium in Example 2 is the encapsulation protocol HLS and the encoding format is H.264), the first index file of the target media asset medium can be:

[0140] #EXTM3U

[0141] #EXT-X-VERSION:3

[0142] #EXT-X-STREAM-INF: PROGRAM-ID=4, BANDWIDTH=1768403, AVERAGE-BANDWIDTH=588446, CODECS="mp4a.40.5, avc1.64001e", RESOLUTION=854x480

[0143] Example_854X480_600_0.m3u8

[0144] #EXT-X-STREAM-INF: PROGRAM-ID=3, BANDWIDTH=2940620, AVERAGE-BANDWIDTH=966219, CODECS="mp4a.40.5, avc1.64001f", RESOLUTION=1280x720

[0145] Example_1280X720_1000_0.m3u8

[0146] #EXT-X-STREAM-INF: PROGRAM-ID=1, BANDWIDTH=6951187, AVERAGE-BANDWIDTH=2626090, CODECS="mp4a.40.5, avc1.640028", RESOLUTION=1920x1080...

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Abstract

The invention discloses a video transcoding method and device, relates to the technical field of video processing, and the video transcoding method and device are helpful for reducing transcoding resource consumption and transcoding cost, shortening transcoding time and improving loading efficiency. The method is applied to a media asset subsystem, a target media asset medium of a target video isstored in the media asset subsystem, and the target media asset medium comprises a medium file corresponding to a first code stream. The method comprises the steps that a media asset subsystem receives an indication message; wherein the indication message is used for indicating that a medium file corresponding to the second code stream is newly added in the target media asset medium; obtaining a content source film of the target video according to the indication message; sending a content source slice of the target video to a transcoding subsystem, wherein the content source slice is used forthe transcoding subsystem to generate a medium file corresponding to the second code stream; wherein the first information of the second code stream is the same as the first information of the first code stream; wherein the first information comprises whether the key frame is an IDR frame or not and position information of the key frame; and receiving a medium file corresponding to the second codestream sent by the transcoding subsystem.

Description

technical field [0001] The present application relates to the technical field of video processing, in particular to a video transcoding method and device. Background technique [0002] With the development of video services, technologies such as higher definition, high-dynamic range (HDR) and image detail display have been applied to the field of video processing technology. At the same time, the types of terminals that support video playback are also increasing. , users have higher requirements for the picture of video playback. Therefore, video operators generally need to add media files corresponding to one or more code streams to the media asset medium in which the media files corresponding to the code streams have been stored, so as to meet the viewing needs of users. [0003] At present, a dynamic bit rate playback (variable bit rate, VBR) technology is usually used, so that when a terminal plays a video, it can dynamically select the most suitable bit rate for playba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/4402H04N21/845H04N21/854
CPCH04N21/8456H04N21/440236H04N21/440263H04N21/85406H04N21/23439H04N21/816H04N21/8455H04N21/234363H04N21/235H04N21/242H04N21/234336
Inventor 闫伟
Owner HUAWEI TECH CO LTD