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A real-time video transmission device

A real-time video and transmission device technology, applied in television, closed-circuit television system, selective content distribution, etc., can solve the problem that the quality of video transmission cannot be effectively guaranteed, interruption or mosaic images appear, and data sources cannot read data, etc. problem, to achieve the effect of reducing real-time transmission delay, good video playback fluency, and reliable principle

Inactive Publication Date: 2018-03-30
QINGDAO UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development of wireless communication technology, the high popularity of portable mobile terminals represented by smart phones provides convenient conditions for the construction of real-time video transmission for mobile environments. Real-time video transmission in network video chat, video conferencing and medical teaching In areas with high performance requirements, the delay of video transmission has become a key indicator to measure the performance of real-time video transmission system; at present, the real-time video transmission system using smart phones as video To support real-time video transmission, it is necessary to create a new data source that can read data from the memory to replace the original data source. The new data source reads data from the buffer of the streaming media server. During a certain period of time, the data of the acquisition end device When the processing capacity is reduced or the network is congested, the data will not be transmitted to the receiving buffer of the server in time, resulting in the data source not being able to read the data, real-time video transmission delays, video playback interruption or mosaic images, and real-time video transmission The quality cannot be effectively guaranteed. For example, the default data transmission logic of the live555 open source project is based on video file on-demand. On the one hand, it is necessary to modify the data transmission structure, abstract data source and interface in live555; the retransmission method in the prior art is not suitable for video transmission systems with high real-time requirements

Method used

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  • A real-time video transmission device
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  • A real-time video transmission device

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Embodiment

[0027] The main structure of the device for real-time video transmission involved in this embodiment includes a collection end, a streaming media server end, and a playback end. The media server side; the streaming media server side consists of video data interface, real-time processing logic module, data buffer, retransmission module, self-adaptive adjustment module, data source processing module, RTP (real-time transport protocol) encoding module, session management module and RTSP (Real-time streaming protocol) The interactive module is connected according to the electrical principle. The video data interface receives UDP video data and saves it in the data buffer. The real-time processing logic module performs real-time processing on the received UDP video data. The retransmission module According to whether the new video data is received in the buffer zone, it is judged whether to retransmit the video data to maintain the continuity of the video data. The retransmission mo...

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Abstract

The invention belongs to the technical field of a real-time video transmission and relates to a real-time video transmission device and a real-time video transmission method. A sampling terminal encodes the sampled video data and transmits the video data to a streaming media server terminal via a UDP manner; the streaming media server terminal flowing processes the video data transmitted from the sampling terminal in real time and packages the video data into a standard RTP data package according to a RTP protocol rule; then the streaming media server terminal and a player terminal are interacted by using the RTP protocol, so that the RTP package is transmitted to the player terminal; the player terminal plays the received video data. The real-time video transmission device is simple in structure, reliable in principle and easy to popularize and apply and has good video transmission stability and video playing continuity.

Description

Technical field: [0001] The invention belongs to the technical field of real-time video transmission, and in particular relates to a real-time video transmission device and method based on a streaming media server, which improves the real-time performance of video transmission. Background technique: [0002] With the development of wireless communication technology, the high popularity of portable mobile terminals represented by smart phones provides convenient conditions for the construction of real-time video transmission for mobile environments. Real-time video transmission in network video chat, video conferencing and medical teaching In areas with high performance requirements, the delay of video transmission has become a key indicator to measure the performance of real-time video transmission system; at present, the real-time video transmission system using smart phones as video To support real-time video transmission, it is necessary to create a new data source that c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/24H04N21/6437H04N7/18
CPCH04N7/181H04N21/2402H04N21/2405H04N21/6437
Inventor 魏崇毓田文鹏陈琦张宏琳孙海英
Owner QINGDAO UNIV OF SCI & TECH
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