... -delay between playback channels15. Support IVS(intelligent video analysis system),like perimeter detection,items care, flowmeter, abnormal video signal diagnosis16. DVR,NVR and HVR, 3 in ... , thorn or thread type of interference in the video image that lead to image fuzz, twisted, snow, flicker, scrolling, etc. 8CH H.264 intelligent video analysis system Hybrid cctv DVR,8ch D1 DVR