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VIDEO · CAMERAS

What Is AHD?

AHD (Analog High Definition) is a CCTV standard that sends high-definition video over coaxial cable as an analogue signal. It lets existing coax and BNC cabling carry HD cameras, with long cable runs and very low latency, because the video is not compressed or sent over a network. HD-TVI and HD-CVI are competing analogue HD formats.

01

The Short Answer

AHD gave older analogue CCTV systems a cheap path to HD: swap the cameras and recorder, keep the cable. It is still common on vehicles and in retrofits. IP cameras offer higher resolutions and PoE over network cable, while SDI is a digital broadcast standard that also stays uncompressed and low in latency.

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    AHD vs IP AHD keeps coax and low latency; IP adds resolution, PoE and networking.
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    AHD vs SDI Both uncompressed; SDI is digital and used in broadcast and defence.
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    AHD vs TVI and CVI Similar analogue HD formats; many capture cards accept all three.
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    Capturing AHD A capture card brings AHD feeds into an AI computer for analysis.
02

Why It Matters

Our object tracking case study takes AHD and SDI cameras into a rugged Jetson computer through Yuan capture cards, and our SDI capture guide explains the digital side. See our video capture cards.