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Wireless video transmission system based on CUDA display card coding and transmission method thereof

A wireless video and transmission system technology, applied in the field of graphic image and video encoding and decoding, can solve the problems of increasing complexity, etc., and achieve the effect of improving encoding speed, facilitating real-time transmission, and low occupancy rate

Inactive Publication Date: 2017-02-15
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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added complexity

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  • Wireless video transmission system based on CUDA display card coding and transmission method thereof
  • Wireless video transmission system based on CUDA display card coding and transmission method thereof

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Embodiment 1

[0036] like figure 1 As shown, a wireless video transmission system based on CUDA graphics card encoding, including an encoding sending end system module and a decoding receiving end module;

[0037] The encoding sending end system module includes screen acquisition module, CUDA video encoding module, x265 video encoding module, ORTP sending module and wireless sending module; The ORTP sending module and the wireless sending module are connected in sequence, and the x265 video encoding module is connected to the screen acquisition module and the ORTP sending module respectively;

[0038] The decoding receiving end module includes a wireless receiving module and a video decoding output module connected in sequence, and the video decoding output module is also connected with a display device to be displayed.

[0039] The screen acquisition module obtains the computer screen video data stream, and converts the original data code stream of the video data stream into video data in...

Embodiment 2

[0048] like figure 2 Shown, a kind of transmission method based on the wireless video transmission system of CUDA graphics card coding, comprises the following steps:

[0049] S1: the screen acquisition module obtains the screen video data stream from the computer of the screen video to be obtained, and converts the original data stream of the video data stream into video data in YUV420P or YUV422 pixel format;

[0050] S2: The CUDA video encoding module receives the video data in the YUV420P or YUV422 pixel format transmitted by the screen capture module, and compresses the video data in the YUV420P or YUV422 pixel format into HEVC data streams by hard-coding the graphics card;

[0051] S3: The x265 video encoding module receives the video data in YUV420P or YUV422 pixel format transmitted by the screen acquisition module, and compresses and encodes the video data in YUV420P or YUV422 pixel format into HEVC data stream by means of soft encoding;

[0052] S4: The CUDA video ...

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Abstract

The invention provides a wireless video transmission system based on CUDA display card coding and a transmission method thereof. The transmission method provided by the invention is as follows: a coding sending end system module obtains screen video data stream from a computer of a to-be-obtained screen video via a screen collection module, and converts original data code stream of the video data stream into video data with a YUV420 or YUV422 pixel format; and a CUDA video coding module and an x265 video coding module respectively compress the video data with the YUV420 or YUV422 pixel format into HEVC (High Efficiency Video Coding) data stream, and then send out via an ORTP sending module to be received by a decoding receiving end module. The coding speed can be greatly improved, thereby being beneficial to network real-time transmission; and meanwhile, the occupancy rate to a CPU is low, and when the display card hard coding cannot be used, the wireless video transmission system based on the CUDA display card coding and the transmission method thereof still can carry out the coding on the video data via soft coding.

Description

technical field [0001] The present invention relates to the field of graphic image and video encoding and decoding, and more specifically, relates to a wireless video transmission system and a transmission method based on CUDA graphics card encoding. Background technique [0002] H.264 / MPEG-4part 10AVC (H.264 / AVC) video coding standard is a digital video compression format standard jointly proposed by the International Organization for Standardization (ISO) and the International Telecommunication Union (ITU) in 2003. Compared with the original standard, the coding quality and compression ratio of this video compression format standard have been greatly improved. And in the same visual perception quality, its coding efficiency is about 50% higher than that of H.263, MPEG-2 and MPEG-4, and it has good network friendliness. These excellent performances make H.264 / AVC widely used in various fields such as broadcast TV and wireless multimedia. [0003] However, with the continu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/42H04N7/18
CPCH04N7/18H04N19/42
Inventor 陆许明徐永键谭洪舟张嘉文
Owner SUN YAT SEN UNIV