DVR monitoring system supporting single-channel dual-stream video recording and method thereof

Abstract

The invention provides a DVR monitoring system supporting single-channel dual-stream video recording and a method thereof. A video and audio acquisition channel acquires video and audio data, and the video and audio acquisition channel comprises analog video cameras or IPCs; a DSP encoder encodes analog signal input of the video and audio data acquired by the same path of analog video cameras into mainstream data with higher resolution and sub-stream data with lower resolution, or repackages the mainstream and sub-stream data acquired by the same path of IPCs into the mainstream data with higher resolution and the sub-stream data with lower resolution; the mainstream data with higher resolution are cached in a mainstream video recording buffer area, and the sub-stream data with lower resolution are cached in a sub-stream video recording buffer area; and a mainstream and sub-stream video recording scheduling module schedules the mainstream data with higher resolution and the sub-stream data with lower resolution to be stored to video recording storage equipment. Hard disk data storage overhead can be reduced so that network bandwidth can be effectively reduced, and overhead of a client-terminal decoder and the equipment performance requirement can be reduced.

Description

technical field [0001] The invention relates to a DVR monitoring system and method supporting single-channel dual-code stream video recording. Background technique [0002] DVR (Disk Video Recorder), including DVR, Hybrid DVR and Network DVR. In the existing high-definition network video surveillance applications, DVR usually connects to high-definition pixel IPC (IP CAMERA, network camera), and generally each channel only supports one video and audio data stream storage. Due to the large amount of data stored in the high-definition channel, the high resolution will be insufficient in the following applications: [0003] 1. In the 3G network and poor network environment, it is difficult to achieve a good playback effect; [0004] 2. During multi-channel playback, due to the limited decoding performance, it is difficult to achieve the playback effect of more channels and higher playback multiples; [0005] 3. Due to the uneven performance of handheld mobile devices, the pl...

AI Technical Summary

Problems solved by technology

[0003] 1. In the 3G network and poor network environment, it is difficult to achieve a good playback effect;

[0004] 2. During multi-channel playback, due to the limited decoding performance, it is difficult to achieve the playback effect of more channels and higher playback multiples;

[0005] 3. Due to the uneven performance of handheld mobile devices, the playback and decoding effect of high-definition channels is limited

[0006] In addition, due to the abnormality of the hard disk, the video data may be lost. In the prior art, in order to ensure the security of the video data, redundant backup video can be used. The traditional redundant video is to record two copies of the main stream data to the common In the hard disk and redundant hard disk, the data storage overhead of the hard disk will be doubled

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