A traditional CCTV system records video so that someone can review it after an incident. An AI camera analyses the picture as it is captured: it can tell a person from a vehicle from a swaying tree, raise an alert when someone crosses a line or enters a zone after hours, and tag the recording so an event can be found in seconds. The camera hardware looks much the same. What changes is that the system moves from passive evidence to active notification, with fewer false alarms and far less time spent scrubbing through footage. It also raises new questions about accuracy, network load and personal data.
How do AI cameras and traditional CCTV compare?
| Traditional CCTV | AI camera system | |
|---|---|---|
| Main purpose | Record for later review | Detect, classify and alert in real time |
| Motion detection | Any pixel change: rain, shadows, insects | Classified: person, vehicle, sometimes animal |
| False alarms | Frequent, so alerts get switched off | Much reduced |
| Finding an event | Scrub through hours of video | Search by type, zone and time |
| Rules | Basic motion zones | Line crossing, intrusion, loitering, object left or removed |
| Where analysis happens | None, or on the recorder | In the camera, the recorder or a server |
| Typical connection | Analogue coax or basic IP | IP with PoE |
| Data protection | Recording of individuals | Recording plus automated analysis of individuals |
Where does the AI run?
- In the camera. A chip in the camera classifies objects and applies rules. No extra hardware, works if the recorder is offline, and only events need to be sent. Capabilities are fixed by the camera model.
- In the recorder. The network video recorder analyses streams from ordinary IP cameras. Useful for upgrading existing cameras, limited by how many channels the recorder can analyse at once.
- On an edge server. A GPU system runs heavier or custom models across many streams, such as safety-equipment detection or process monitoring. Most flexible, most work to build.
Many small businesses need only the first. We explain the trade-offs between local and remote processing in edge AI vs cloud AI.
What does the AI actually do well?
- Telling people and vehicles apart from background movement.
- Perimeter rules: line crossing and zone entry at set times.
- Counting people or vehicles through an entrance.
- Making recordings searchable by event type.
It is less dependable in poor light, heavy rain, crowded scenes, at long distances and with badly positioned cameras. Features and accuracy differ by model and firmware, so check the specific camera's specification and test it on your own site before relying on an alert for anything important.
The biggest change is not better pictures. It is that the system tells you something happened, where before you had to already know and go looking.
What changes for storage and the network?
CALC. A camera recording continuously at 4 megabits per second uses 4 x 86,400 / 8 = 43,200 megabytes, about 43.2 GB a day. Eight cameras use 8 x 43.2 = 345.6 GB a day, and 30 days of retention needs 345.6 x 30 = 10,368 GB, about 10.4 TB. Bitrate here is an illustrative figure; resolution, frame rate and compression change it considerably.
AI helps in two ways: event-based recording keeps full quality only when something relevant happens, and smart compression lowers the bitrate of static scenes. Use surveillance-rated drives in the recorder, and size the PoE switch for the total camera power draw. See PoE power budgets.
What about PDPA and privacy?
In Singapore, video of identifiable individuals is personal data under the Personal Data Protection Act. Organisations generally need to notify people that CCTV is in operation and what it is for, use the footage only for that purpose, protect it and not keep it longer than needed. Adding analytics does not remove those duties, and features that identify individuals, such as face recognition, raise the stakes and deserve specific advice. Classifying an object as a person without identifying who it is carries less risk than recognising a named individual. This is general information, not legal advice; see is your office CCTV protecting you or spying on you.
Are the cameras themselves a security risk?
They are networked computers. Change default passwords, keep firmware current, put cameras on their own network segment and do not expose the recorder directly to the internet. See who is guarding your network.
Should you replace a working CCTV system?
- Replace if it is analogue, the picture is too poor to identify anyone, nobody watches the alerts because they are constant, or finding an incident takes hours.
- Upgrade in part if the cabling is sound: swap the recorder for one with analytics, and replace cameras at the key entrances first.
- Keep if it is a recent IP system that meets its purpose and you only ever need footage after the fact.
Buying in Singapore
TP-Link VIGI business cameras and recorders with on-device detection, including the VIGI C485 8MP turret camera, the VIGI C540S pan-tilt camera and the VIGI NVR2016H-16MP 16-channel PoE+ recorder, are price on request. For custom video analytics on an edge server, the NVIDIA Jetson AGX Orin 64GB Developer Kit (S$5,871.60). To segment cameras from the office network, the Fortinet FortiGate 70G (S$1,668) (listed 11 Nov 2026; prices change; ask for a current quotation). To start, use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
What is the difference between an AI camera and a CCTV camera? A traditional CCTV camera records video for later review. An AI camera also analyses the video as it is captured, classifying people and vehicles and sending alerts based on rules.
Do AI cameras reduce false alarms? Yes. By classifying what caused the movement, they ignore most triggers from rain, shadows, insects and foliage that set off basic motion detection.
Do AI cameras need the internet or a server? Not necessarily. Many run the analysis inside the camera or recorder and work entirely on the local network. Internet is needed only for remote viewing and notifications.
Are AI cameras allowed under PDPA in Singapore? CCTV is permitted, but video of identifiable people is personal data, so notification, purpose limitation, protection and retention obligations apply. Features that identify individuals need particular care.
