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Method and device for processing and transmitting media data

A media data and media technology, applied in the field of image or video compression technology and system transmission, can solve problems such as the inability to effectively support sequential image knowledge images, and the unaligned time-segment dependencies that cannot describe the knowledge base-encoded video stream.

Active Publication Date: 2021-01-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 3. Traditional video coding scheme
However, the existing technical solutions cannot effectively support the description of the dependency relationship between sequence images and knowledge images and the efficient management of knowledge images
[0023] The scaling level in the aforementioned MMT can describe the level information of SVC data, and the scaling level and time information can describe the dependency between different levels of SVC data at the same time, but it cannot describe the unaligned time period of the knowledge base coded video stream dependencies

Method used

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  • Method and device for processing and transmitting media data
  • Method and device for processing and transmitting media data
  • Method and device for processing and transmitting media data

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Embodiment Construction

[0287] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0288] Before describing the embodiment, declare the necessary noun definitions earlier:

[0289] Knowledge image: A knowledge image is an image outside the image set that needs to be displayed in the random access segment to which the current image belongs and the nearest random access segment before it. The knowledge image is a reference image, used for encoding images or The image to be decoded provides a reference.

[0290] The first embodiment: provide a method for specifying a reference image, Figure 5 A flow example of this embodiment is shown, and the embodiment includes:

[0291] Step 101: the decoder extracts the first identification information in the reference mapping table to obtain whether the reference picture number corresponding to the referenc...

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Abstract

The invention discloses a method and device for processing media data and a method and device for transmitting media data. Through the method of processing the media data, the method of transmitting the media data and the method of processing the media data, according to the dependency index relationship between the code stream data of the video layer and the code stream data of the knowledge layer, the synchronization and correct processing and transmission of the code stream are guaranteed, And efficiently provide the correct data to the decoder. The correct decoding and efficient transmission of the code stream obtained by the video coding method based on the knowledge base are guaranteed, and the transmission efficiency and storage efficiency are improved.

Description

technical field [0001] The present invention relates to the technical field of image or video compression and the field of system transmission, more specifically, to a method and device for processing media data and a method and device for transmitting media data. Background technique [0002] 1. File format [0003] A file format is a specific way of storing encoded data in a computer file. It can separate metadata and media data to solve problems such as random access and network streaming. [0004] Media data includes video data, audio data, time-sequential metadata, non-sequential images, and the like. The media data is divided into multiple access units, and each access unit contains a non-sequential image or a group of non-sequential images or at least one random access segment. When the media data is time-sequential media, the access unit of the media data is carried in the sample (sample ), when the media data is non-sequential media, the access unit of the media ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4402H04N21/845H04N19/70
CPCH04N21/440227H04N21/8456H04N19/70H04N21/85406
Inventor 虞露于化龙袁锜超林翔宇
Owner ZHEJIANG UNIV