CCTV vs IP Camera: The Real Differences (And the Resolution Myth)

Start with the confusing part: an IP camera is CCTV. Closed-circuit television means video going to a limited set of viewers rather than being broadcast, and a network camera does exactly that.

What people actually mean by “CCTV vs IP camera” is analog cameras on coax cable versus network cameras on Ethernet. That is the real comparison, and this guide uses those terms.

It matters because a lot of buying advice on this topic is a decade out of date. The usual claim, that analog is stuck at low resolution and IP is the only way to get a sharp picture, has not been true for years.

Quick Comparison

How Each System Is Actually Wired

The wiring is the real difference, and it drives everything else, including the cost.

Analog: Coax to a DVR

Each camera runs a coax cable back to a digital video recorder. The camera sends a video signal; the DVR does the digitising and recording.

Power usually comes from a separate supply, either a plug at the camera or a central power box. Newer systems can send power down the same coax using Power over Coax, which removes that second cable.

The camera itself is simple. It has no IP address, no firmware to log into, and no way to talk to anything except its recorder.

IP: Ethernet to an NVR

Each camera runs a network cable to a switch. That single cable carries both the video and the power, using Power over Ethernet.

The camera is a small networked computer. It digitises and compresses the video itself, then streams it to a network video recorder or straight to the cloud.

PoE comes in tiers: 802.3af supplies about 15W, 802.3at (PoE+) about 30W, and 802.3bt more again. Cameras with heaters, wipers or motorised zoom need the higher tiers, so check the camera’s draw against your switch before ordering.

The Resolution Myth

Search this topic and you will read that analog cameras max out around 0.4 megapixels. That was true of the old CVBS standard. It has not been true since roughly 2014.

Three competing HD-over-coax standards changed it: HD-TVI, AHD and HD-CVI. All three carry high-definition video over ordinary coax, and current versions reach 4MP, 5MP and 4K (8MP).

So “analog means blurry” is simply wrong in 2026. If someone tells you that while quoting for a system, they are either behind or steering you toward a bigger invoice.

What the Alphabet Soup Means for You

The three standards are not interchangeable. An HD-TVI camera needs a recorder that speaks HD-TVI.

In practice this is less painful than it sounds, because most recorders sold now are hybrid and accept all three plus old CVBS, and many cameras are “4-in-1” with a switch to select the mode.

If you are buying analog, buy 4-in-1 cameras and a hybrid recorder. It costs little more and removes the compatibility question entirely.

IP still wins on the top end. Analog stops at 4K, while IP goes higher and handles multi-sensor and panoramic cameras that have no analog equivalent.

The 100 Metre Wall

This one catches people out on real sites.

Ethernet has a hard limit of 100 metres per cable run, camera to switch. It is not a guideline you can stretch on a good day; past it the link becomes unreliable or simply does not come up.

Coax has no such limit at these distances. HD-over-coax happily runs several hundred metres, and Hikvision’s Turbo HD-TVI spec quotes 1080p at up to 750 metres and 720p at up to 1,200 metres.

So if you are covering a yard, a car park, a farm or anything with long runs, the cable standard may decide the system before any feature comparison does.

Getting Past It

You can extend Ethernet with a PoE extender or a mid-span switch, but each one needs power and becomes another thing to fail in the rain.

Fibre solves it properly for long runs, at higher cost and requiring someone who can terminate it.

The cheapest fix on an existing site is often to keep the coax and use HD-over-coax cameras, or to put an Ethernet-over-Coax adapter on the existing cable and run IP cameras over it.

ONVIF: The Compatibility Question That Decides Everything

If you buy IP, this is the specification that determines whether your kit works together.

ONVIF is an open standard that lets cameras and recorders from different manufacturers talk to each other. Without it you are locked into one brand’s ecosystem for the life of the system.

It comes in profiles. Profile S covers basic video streaming, Profile G covers recording and retrieval, and Profile T covers advanced streaming including H.265.

The practical rule: check that the camera and the recorder support the same profile, not merely that both say “ONVIF” somewhere on the box.

Be aware that a third-party ONVIF camera on another brand’s recorder often gives you video and little else. The clever analytics, the motion zones, the two-way audio are frequently proprietary and only work within one manufacturer’s own range.

Mixing brands is fine if you want video. If you bought the camera for its person-detection, keep the camera and recorder in the same family.

The Security Risk Nobody Puts in the Comparison

Here is the trade-off that matters most for a business.

An analog camera cannot be hacked. It has no processor to attack, no login, no network stack. The only networked device is the recorder, so you have one thing to secure.

An IP camera is a computer running an operating system, sitting on your network, usually with a web interface. Every camera is a device an attacker could reach.

This Is Not Theoretical

The Mirai botnet, which took large parts of the internet offline in 2016, was built mainly out of hacked IP cameras and DVRs.

The method was not sophisticated. It scanned the internet for devices with Telnet open and tried a list of about 62 default username and password pairs. Over half a million devices were vulnerable.

Nobody had to break encryption. The owners had simply never changed the password the camera shipped with.

What to Actually Do

• Change every default password, per camera, not just on the recorder.
• Put cameras on their own VLAN or a separate network, so a compromised camera cannot reach your accounts or files.
• Do not port-forward cameras to the internet. If you need remote viewing, use the manufacturer’s cloud relay or a VPN into the site.
• Keep firmware updated. Cameras get security patches and nobody ever installs them.
• Disable Telnet, UPnP and any service you do not use.

None of this makes IP a bad choice. It makes IP a choice that comes with responsibility, and it belongs in the same conversation as the rest of your small business cybersecurity.

If nobody at your site is going to manage passwords and firmware, that is a genuine argument for analog.

Storage: The Cost People Forget

Higher resolution means bigger files, and the recorder’s hard drive is a real line item that quotes often understate.

The compression codec matters more than the camera. H.265 produces roughly half the file size of H.264 at similar quality, and vendor variants like H.265+ cut it further on static scenes.

A rough planning figure for a 4MP camera on H.265 recording continuously is somewhere around 1TB per camera per month, though this swings enormously with scene activity, frame rate and bitrate settings.

Two ways to cut it dramatically:

• Record on motion, not continuously. For most premises this cuts storage by a large multiple, since nothing moves for most of the day.
• Drop the frame rate. Most sites do not need 30fps. At 12 to 15fps you still identify people and halve the file.

Decide your retention period before you buy the recorder. Thirty days of footage needs roughly four times the disk of seven days, and adding drives later is not always possible.

Upgrading Without Rewiring

If you already have an analog system, the cable is usually the expensive part and it is already in the walls.

You have three routes, cheapest first:

• Stay analog, go HD. Swap cameras and recorder for HD-over-coax on the existing cable. Big picture-quality jump, lowest cost, no rewiring.
• Ethernet over the old coax. EoC adapters let you run IP cameras over the coax you already have. More cost, keeps the IP feature set.
• Full rewire to Cat6. Cleanest long-term answer and the most expensive, and on long runs you still hit the 100 metre limit.

A hybrid recorder is worth knowing about here. It takes both analog and IP inputs, so you can move a few cameras at a time rather than replacing everything at once.

Which Should You Choose?

• Existing coax and a tight budget: HD-over-coax. Best value in the comparison and nobody recommends it enough.
• New build, wiring from scratch: IP. You are running cable anyway, so run Cat6.
• Long cable runs, over 100 metres: analog, or budget for fibre.
• Need to read number plates or faces reliably: IP, for the resolution and the analytics.
• Nobody on site will manage passwords or firmware: analog is the safer answer.
• Want alerts for people or vehicles rather than every moving leaf: IP, and keep camera and recorder the same brand.
• Small shop, a few cameras, simple needs: analog does the job for less.

One Legal Note

In most countries you must tell people they are being recorded, usually with visible signage, and there are rules about how long you keep footage and who can see it.

Recording audio is frequently treated more strictly than video, and cameras pointing at a neighbour’s property or a public pavement often carry extra obligations.

These rules vary by country and sometimes by region, so check your local requirements before installing rather than after a complaint. This is not something the camera vendor will handle for you.

Frequently Asked Questions

Is an IP camera the same as CCTV?

Technically an IP camera is a type of CCTV, since closed-circuit television just means video sent to a limited set of viewers. In everyday use, “CCTV” has come to mean analog cameras on coax cable feeding a DVR, while “IP camera” means a network camera on Ethernet feeding an NVR or the cloud.

Are analog CCTV cameras still low resolution?

No, and this is the most common outdated claim on the subject. The old CVBS standard capped out around 0.4 megapixels, but HD-over-coax standards such as HD-TVI, AHD and HD-CVI now carry 4MP, 5MP and 4K video over the same coax cable. Analog only loses on the very top end, where IP offers higher resolutions and multi-sensor cameras.

How far can an IP camera be from the switch?

One hundred metres per cable run, which is the Ethernet standard’s hard limit. Beyond that you need a PoE extender, a mid-span switch or fibre. Coax has no comparable limit at these distances, with HD-over-coax specifications quoting 1080p at up to 750 metres, which often decides the system on large sites.

Can IP cameras be hacked?

Yes. An IP camera is a networked computer with a login, so it can be attacked, while an analog camera cannot. The Mirai botnet was built largely from IP cameras and DVRs by scanning for open Telnet and trying around 62 default passwords, and over half a million devices were exposed. Change every default password, keep cameras on a separate network, avoid port-forwarding them, and update firmware.

What is ONVIF and do I need it?

ONVIF is an open standard that lets cameras and recorders from different manufacturers work together. Check that your camera and recorder share the same profile, since Profile S covers streaming, Profile G covers recording and Profile T covers advanced streaming with H.265. Note that a mixed-brand ONVIF setup usually gives you video only, as analytics and advanced features are often proprietary.

Can I use my existing coax cables for IP cameras?

Yes, with Ethernet over Coax adapters, which let you run IP cameras on the cable already installed. The cheaper option is often to stay on coax entirely and fit HD-over-coax cameras, which gives you a large picture-quality improvement with no rewiring at all.

How much storage do I need for security cameras?

It depends heavily on resolution, frame rate, codec and how much movement the scene has. As a rough planning figure, a 4MP camera recording continuously with H.265 can use in the region of 1TB per month. Recording on motion instead of continuously, and dropping from 30fps to around 12 to 15fps, both cut that substantially.

Can I mix analog and IP cameras on one system?

Yes, using a hybrid recorder that accepts both analog and IP inputs. This is the practical way to modernise an existing installation, since you can replace a few cameras at a time rather than swapping the whole system in one go.