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Method of achieving high-definition transmission of videos

A video and high-definition technology, applied in digital video signal modification, TV, electrical components, etc., can solve problems such as poor video quality and poor real-time performance, and achieve the effects of reducing the amount of calculation, improving efficiency, and ensuring quality

Inactive Publication Date: 2013-05-15
中国对外翻译有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that there are problems of poor video quality and poor real-time performance in the prior art, and a new method for realizing high-definition video transmission is provided

Method used

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  • Method of achieving high-definition transmission of videos
  • Method of achieving high-definition transmission of videos
  • Method of achieving high-definition transmission of videos

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 , figure 2 with image 3 , where the CPU is IntelCore2Q9400, the main frequency is 2.66GHz, and the memory is 3G; the GPU is GeForceGT425M (128bit memory interface, core frequency 1120MHz, memory frequency 800MHz, memory bandwidth 25.6GB / s). In double-buffer multi-threaded operation, the buffer block structure is defined as follows:

[0043]

[0044] Among them, link is the connection pointer of the buffer block in the buffer; data is the pointer pointing to the current buffer block.

[0045] use figure 2 The shown level 1 is decoded based on the CPU+GPU parallel decoding architecture of H.264.

[0046] Under the above conditions, a 720x576 video sequence was selected for testing, 300 frames were extracted, and repeated 800 times, and the average time-consuming of each frame of MC was counted. Compared with the traditional CPU algorithm, the algorithm of the present invention has an overall acceleration ratio of 9.6 times, and the video quali...

Embodiment 2

[0048] refer to figure 1 , figure 2 with Figure 4 , the CPU is IntelCore2DuoCUPE8400, the main frequency is 3.0GHz, and the memory is 1.9G; the GPU is GeForceGT425M (128bit memory interface, core frequency 1120MHz, memory frequency 800MHz, memory bandwidth 25.6GB / s). The definition of the buffer block structure in the double-buffer multi-thread operation is the same as the real-time example 1. use image 3 The shown level 4 is decoded based on the CPU+GPU parallel decoding architecture of H.264. Under the above conditions, a 1280x720 video sequence was selected for testing, 200 frames were extracted, and the execution was repeated 1000 times, and the average time-consuming was counted. Compared with the traditional CPU algorithm, the algorithm of the present invention has an overall speed-up ratio of 8.5 times; and the video quality is clear, effectively realizing the high-definition and real-time transmission of the video.

Embodiment 3

[0050] refer to figure 1 , figure 2 with Figure 5 , the CPU is IntelCore2DuoCUPE8400, the main frequency is 3.0GHz, and the memory is 1.9G; the GPU is NVIDIAGeForceGTX460 (256bit memory interface, core frequency 1350MHz, memory frequency 3600MHz, memory bandwidth 115.2GB / s). The definition of the buffer block structure in the double-buffer multi-thread operation is the same as [Embodiment 1]. use Figure 5 The shown level 3 is decoded based on the CPU+GPU parallel decoding architecture of H.264. Under the above conditions, a low-resolution video sequence with a resolution of 352x288 and a video sequence with a high resolution and a very violent motion were selected for testing, and 200 video sequences were extracted from each video sequence. Frames are executed repeatedly 1000 times, and the average time-consuming is counted. Adopting the algorithm of the present invention compared with the traditional CPU algorithm, for the video sequence of 352x288, the overall speed-...

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Abstract

The invention relates to a method of achieving high-definition transmission of videos, and mainly solves the problems that in prior art, a video is poor in quality and real-time performance. The method comprises the following steps: providing a video high-definition system which comprises a video collecting compressing module (1), a transporting module (2), a decompressing and playing module (3) and an interface (4), carrying out transformat conversion to the collected videos, coding the transformat converted videos by adopting a video coding technique based on a graphics processing unit (GPU) and storing the converted videos, transporting the video data by adopting the protocol based on real time protocol (RTP) / real-time transport control protocol (RTCP), carrying out decoding to the video data by adopting video parallel decoding technology based on the GPU, and outputting a decoded video displaying technique scheme. The method of achieving the high-definition transmission of the videos solves the problem better, and can be used to achieve the high-definition and real-time transmission of the videos.

Description

technical field [0001] The invention relates to a method for realizing high-definition video transmission. Background technique [0002] A video conferencing system refers to a system in which two or more people or groups in different places transmit sound, video files and document materials to each other through transmission lines and multimedia equipment to achieve instant and interactive communication to complete the purpose of the meeting. With the development of Internet technology and the combination of Internet and audio and video technology, geographically dispersed users can gather together and exchange information through graphics, sound and other ways. Collaborative work. At present, more and more people are beginning to enjoy working online, and with the rapid development of Internet technology, it has become the only way to achieve communication between people through video conferencing systems. [0003] At present, most of the video conferencing systems in th...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N21/6437H04N19/423
Inventor 于洋林国夫张伟
Owner 中国对外翻译有限公司
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