code stream conversion method and system for inserting SEI data

A code stream conversion and data technology, applied in the computer field, can solve problems such as inability to use SEI

Active Publication Date: 2019-06-18
BEIJING CENTURY TAL EDUCATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method of setting SEI has no problems in most of the use process, but if the time used by the encoding module in en

Method used

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  • code stream conversion method and system for inserting SEI data
  • code stream conversion method and system for inserting SEI data
  • code stream conversion method and system for inserting SEI data

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Experimental program
Comparison scheme
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Embodiment 1

[0048] see figure 1 , figure 1 It is a schematic flowchart of the code stream conversion method for inserting SEI data (hereinafter referred to as "the code stream conversion method") provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the code stream conversion method includes the following steps:

[0049] S101. Encode and compress the first image data to obtain second image data, where the second image data includes network abstraction layer unit compressed data.

[0050] In one embodiment, the first image data is YUV image data. After the YUV image data is compressed, the second image data obtained is compressed YUV image data. YUV images are a color encoding method used in various video processing components. When encoding photos or videos, YUV images can take human perception into account, allowing bandwidth reduction for chroma. "Y" represents the brightness (Luminance, Luma) of the image, while "U" and "V" represent the chroma and density...

Embodiment 2

[0060] see figure 2 , figure 2 It is a schematic flowchart of a code stream conversion method for inserting SEI data (hereinafter referred to as "code stream conversion method") provided by Embodiment 2 of the present invention. Please refer to Embodiment 1 for S101-S105. Such as figure 2 As shown, the transcoding method comprises the following steps:

[0061] S107. Copy the network abstraction layer unit compressed data inserted with the SEI data to a buffer, where the SEI data includes a timing factor or a timeliness factor.

[0062] In one embodiment, the network abstraction layer unit with SEI data inserted into it mentioned in embodiment 1 compresses the data, and then copies all the network abstraction layer unit compressed data into a designated buffer (Buffer). At this point, the work of inserting the SEI data after encoding is all completed, and then the defined buffer needs to be used.

Embodiment 3

[0064] see image 3 , image 3 It is a schematic block diagram of a code stream conversion system for inserting SEI data (hereinafter referred to as "code stream conversion system") provided by Embodiment 3 of the present invention.

[0065] Such as image 3 As shown, conversion system 300 includes:

[0066] An encoding module 310, the encoding module 310 is configured to encode and compress the first image data to obtain second image data, wherein the second image data includes network abstraction layer unit compressed data;

[0067] An expansion module 320, the expansion module 320 is used to expand the network abstraction layer unit compressed data;

[0068] Insertion module 330, the insertion module 330 is used for inserting the SEI data into the network abstraction layer unit compressed data.

[0069] Preferably, the code stream conversion system 300 also includes:

[0070] The copying module 340, the copying module 340 is used for copying the compressed data of the ...

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Abstract

The present invention provides a code stream conversion method for inserting SEI data, the code stream conversion method comprising: encoding and compressing first image data to obtain second image data, the second image data comprising network abstraction layer unit compressed data;expanding the network abstraction layer unit to compress data; and inserting the SEI data into the network abstraction layer unit to compress the data. According to the code stream conversion method provided by the invention, the SEI data is inserted into the network abstraction layer unit compressed data of the second image data, so that the network abstraction layer unit compressed data into which the SEI data is inserted has time sequence.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a code stream conversion method and system for inserting SEI data. Background technique [0002] The traditional method of setting SEI is to set the SEI content when the encoding module is initialized, and through the specified interface, it can be defined as the setSEI method to set the seipayload to the encoding module, and the encoding module encodes the given YUV stream data according to the behavior of the encoding module Output compressed data, such as H.264 / H.265. The given seipayload will be placed in the SEI domain according to the defined format, other data has been placed in the compressed domain data area, and the SEI and compressed data will be sent to the user in the form of data stream or network packet. The user side performs decoding again, and decodes the data into YUV form and SEI form. [0003] The traditional method of setting SEI has no problems ...

Claims

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Application Information

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IPC IPC(8): H04N19/46H04N19/85
Inventor 郭志鸣时杰
Owner BEIJING CENTURY TAL EDUCATION TECH CO LTD
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