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H264-based real-time mobile video service control method

A technology of service control and mobile video, applied in digital video signal modification, television, electrical components, etc., can solve the problems of lack of flow control, congestion control and error control, affecting the real-time and fluency of video, and degrading video quality. , to reduce the packet loss rate, improve the success rate, and reduce the number of

Inactive Publication Date: 2013-04-17
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0005] Using the UDP protocol to transmit video data is more efficient and the transmission delay is smaller, but it does not have flow control, congestion control and error control mechanisms, and packet loss will lead to a decrease in video quality
[0006] Using TCP to transmit video data has mechanisms such as congestion control and error control. Due to its congestion mechanism and acknowledgment retransmission mechanism have a certain impact on the throughput of network transmission, resulting in low transmission efficiency, which affects the real-time performance and smoothness of video. sex

Method used

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  • H264-based real-time mobile video service control method

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Embodiment 1

[0076] Real-time mobile video is widely used in fields such as video surveillance, video phone and mobile TV, in order to test the application effect of the service control method of the present invention, the present invention is applied in a mobile video surveillance system;

[0077] The mobile video monitoring system has four parts: one is the front-end camera equipment responsible for real-time video acquisition; the other is the application server responsible for providing authentication and management functions, and the third is the mobile streaming server responsible for providing H264 real-time video encoding and transmission; It is a mobile terminal device for watching real-time surveillance video through the mobile network.

[0078] The mobile video monitoring system enables mobile device terminals to watch camera images in different places through the network, so that video monitoring is not limited by area and wireless network mode, and real-time video monitoring ca...

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Abstract

The invention discloses an H264-based real-time mobile video service control method, which belongs to the field of real-time streaming media and mobile network transmission. The method includes the following steps: a real-time video is coded according to H264, a low bit rate and low resolution, the coded H264 video data are then packed, the processed video data is transmitted to a mobile terminal according to the real-time stream transmission protocol, a three-phase bit rate control method is adopted, the status of a mobile network channel is detected and fed back by a transmission control mechanism in the process of transmission, and according to feedback information, bit rate control is carried out at the coding end. Finally, the transmitted video data is decoded and displayed by the mobile terminal. The method can effectively guarantee the real-time mobile video service quality in a mobile network environment.

Description

technical field [0001] The invention relates to the fields of real-time streaming media and mobile network transmission, in particular to an H264-based real-time mobile video service control method. Background technique [0002] Real-time streaming media technology is a multimedia data network transmission technology that gradually rises with the development of network and multimedia technology. The transmission method of real-time streaming media is: after the video data is coded and compressed, it is continuously transmitted from the source to the receiving terminal in real time through the network link, and the receiving terminal decodes and plays the received video data, and the source sends data continuously to form a stable For continuous media streams, the receiving terminal caches the received data locally and decodes and plays the cached data. [0003] Real-time streaming media technology involves video codec technology, network transmission of video stream and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/6437H04N21/2385H04N21/234H04N7/26H04N19/146
Inventor 张星明孙弥奋陈景良林育蓓
Owner SOUTH CHINA UNIV OF TECH
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