Audio-video data traffic control method of efficient security monitoring equipment

Abstract

The invention provides an audio-video data traffic control method of efficient security monitoring equipment. The method comprises the following steps: S1, monitoring audio-video data information in real time, saving the audio-video data information in audio-video cache when the audio-video data is produced, and synchronously recording cache number uframenum; S2, presetting a maximum save value ofthe cache number uframenum, and judging whether the cache number uframenum exceeds the maximum save value; if the uframenum exceeds the maximum save value, clearing audio-video cache data, and refilling the newly generated audio-video data; and S3, monitoring whether external equipment previews a network camera terminal; if detecting the connection of the external equipment, automatically starting a network transmission function, and synchronously recording a network transmission cache water level uthreshold. The audio-video can be sent more effectively and quickly without influencing the network status, the occupancy on the network bandwidth is reduced, the audio-video data can be utilized more effectively and reasonably, and the load operation of the equipment in the audio-video data sending process can be relieved.

Description

[technical field] [0001] The invention relates to the technical field of data flow control, in particular to a high-efficiency security monitoring equipment audio and video data flow control method with high accuracy and good control effect. [Background technique] [0002] In the existing network camera usage scenarios, more will depend on the network environment where the device is located and the performance of the device itself. The control of the data sending and receiving rate of the device mainly depends on the judgment of the network environment, ignoring the device itself. Possible rate control, this method is greatly affected by the clock frequency of the CPU system, and it is prone to systems with different clock frequencies for the same type of equipment, and the rate control has obvious differences in the same network. [0003] In the existing design, the flow control is only used to control the data sending speed or data receiving speed of the device when the de...

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Problems solved by technology

[0002] In the existing network camera usage scenarios, more will depend on the network environment where the device is located and the performance of the device itself. The control of the data sending and receiving rate of the device mainly depends on the judgment of the network environment, ignoring the device itself. Possible rate control, this method is greatly affected by the clock frequency of the CPU system, and it is prone to systems with different clock frequencies for the same type of equipment, and the rate control has obvious differences in the same network

[0003] In the existing design, the flow control is only used to control the data sending speed or data receiving speed of the device when the device is sending or receiving. For the data sending in the application layer of the device, it does not fully play the role of flow control. The preview in the video monitoring system The video picture is real-time, and has high requirements for the smoothness of the picture. Using I frame and P frame for video transmission can improve the adaptability of the network, and can reduce the decoding cost. Therefore, the current video decoding only uses I frame and P frame. For transmission, and each I-frame data and P-frame data needs to occupy a large amount of memory for storage. If the generated number increases and is not sent to the client by network transmission in time, it is very likely to cause damage to equipment, network ports, and bandwidth. load operation

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