IP Network Camera vs Analog CCTV: What Is the Difference

An ip network camera turns the picture into digital data inside the camera and sends it over a network, either a network cable or Wi-Fi, so it can talk to your router, a recorder and your phone directly. An analog camera, such as a CVBS camera or a TVI camera, sends a video signal down a coaxial cable to a DVR, and the DVR does the digital work. That one difference decides how you wire the system, how sharp the picture can be, what happens when a cable is damaged, and how you watch on a phone. Yoosee cameras are network cameras, so if you are deciding what to buy or trying to understand an older system you inherited, this guide walks you through it.

How each type actually works

Analog: CVBS and TVI cameras

An analog camera has a lens and a sensor like any other camera, but what leaves the camera is an electrical video signal, not computer data. That signal travels along a coaxial cable (the round cable with a screw-on or twist-lock connector) to a recorder called a DVR. Power usually travels separately, either on a second pair of wires bundled with the coax or from a small power adapter near the camera.

• CVBS is the oldest form: plain composite video, the same kind of signal an old TV used. It is limited to standard definition, so faces and number plates soon blur at a distance.
• TVI and similar "HD over coax" formats push a higher-resolution signal down the same kind of cable. They were designed so people could upgrade picture quality without rewiring a building.

The camera itself does not know about the internet. The DVR digitises the signal, records it to its hard drive, and is the only part of the system that connects to your network.

IP: network cameras

A network camera has a small computer inside. It compresses the video, gives itself an address on your network, and sends the stream like any other connected device. Depending on the model, it is powered by a plug-in adapter, by Power over Ethernet through the same network cable, or, on some models, by a battery.

Because the camera is a full network device, it can do things an analog camera cannot do on its own: record to its own memory card, send motion alerts straight to the app, and be watched from a phone with no recorder at all. If you are new to how the app, the camera and your account fit together, this overview of what a Yoosee camera is explains the three pieces.

The practical differences, one by one

Cabling

• Analog: coaxial cable from every camera back to the DVR, plus power. If the building already has coax from an older system, it can often be reused.
• IP, wired: one network cable per camera back to a switch or recorder. With PoE, that single cable carries both power and data, which is the tidiest option for new installs. Our PoE camera setup guide covers switches, power budgets and cable runs in order.
• IP, Wi-Fi: only a power cable at the camera, but the picture is only as reliable as the Wi-Fi signal at that spot.

Picture quality

Analog quality is capped by the signal format and the DVR it plugs into. A CVBS camera will look soft no matter how good the DVR is. TVI raises that ceiling, but the DVR must support the same format and resolution, or you will often get no picture, or a rolling or black-and-white image.

Network cameras are not limited by a signal format on the cable, so resolution is decided by the camera's sensor and settings. Higher resolution needs more bandwidth and more storage, so check the resolution and stream options for your model in its manual rather than assuming the highest setting suits every network.

Recording

• Analog: footage lives on the DVR's hard drive. If someone steals the DVR, the footage goes with it.
• IP: on most models the camera can record to its own memory card, a network recorder (NVR) can record many cameras to a hard drive, and some setups use both. If you want an NVR, see how to add a Yoosee camera to an NVR, including the ONVIF check you should do first.

Watching on a phone

With analog, your phone connects to the DVR, never to the cameras. If the DVR is off or its internet link drops, every camera disappears from the app together.

With a network camera, each camera connects on its own. In the Yoosee app you add the camera once, then live view, motion alerts and playback (if a memory card is fitted) work from anywhere with internet, on most models. Menu names may differ slightly by app version.

Compatibility

Analog formats are not all interchangeable. A DVR that only understands CVBS will not show a TVI picture, and some DVRs need you to switch the input type per channel. Network cameras have their own compatibility question: whether a camera works with third-party recorders or software depends on whether that model supports standard protocols such as ONVIF or RTSP. If you want to view a camera in a desktop player, open the stream in VLC once you have confirmed your model supports it.

How to tell what you already have

If you have moved into a house or shop with cameras already fitted, check in this order:

1. Look at the cable entering the camera. A thick round cable with a metal twist-lock connector is almost always coax, so the camera is analog. A network cable with a clear plastic plug like the one on your router means an IP camera, or at least a camera on a network cable.
2. Look at the recorder. The back of a DVR has a row of round video inputs, one per camera. An NVR usually has network ports instead, sometimes a row of them for PoE cameras.
3. Read the label on the camera or recorder. Labels often name the format (CVBS, TVI or similar) or say "IP" or "network". The menu of a DVR may also show the input type for each channel.
4. Check whether the camera appears on your network. Open your router's device list. Analog cameras never appear there; only the DVR does. Each IP camera normally shows up as its own device.

Warning: before you unscrew a camera or open a junction box to inspect wiring, switch off power at the adapter or recorder. If the cameras are powered from mains wiring, or the work needs a ladder or roof access, use a qualified electrician.

Which one makes sense for you

Choose a network camera when:

• You are wiring from scratch, or you only need one to a few cameras.
• You mainly want to watch on your phone and get motion alerts.
• You want each camera to keep recording on its own card even if another part of the system fails.
• You want to add cameras over time without buying a recorder with a fixed number of inputs.

Keeping analog can make sense when:

• The building already has working coax and a working DVR, and you only need to replace one failed camera with the same format.
• You are not ready to rewire yet. In that case, buy a replacement that matches the DVR's format, and plan the switch to network cameras for when the DVR itself needs replacing.

Mixing is possible too. A home can keep an old DVR system running while new network cameras are added to the app alongside it, but they will be watched and recorded in two separate places unless you use a recorder that accepts both, so check that with the recorder's seller before you buy.

Common problems and what they mean

• Analog camera shows a rolling or black-and-white picture: usually the DVR channel is set to a different format from the camera. Change the input type on that channel, or confirm the DVR supports the camera's format at all.
• Analog camera shows "no video": check the coax connector at both ends, then the camera's power supply. A corroded outdoor connector is a common cause.
• Network camera is offline in the app: check the camera's power, then the network cable or the Wi-Fi signal at that spot, then whether your router has changed or restarted.
• Network camera works at home but not away: usually a phone data or router issue rather than the camera. Test on mobile data with Wi-Fi turned off.
• Recorder cannot find a network camera: the model may not support the protocol that recorder uses. Check ONVIF support on the label or manual for your model.

When to get help

Ask the seller or the installer when the label does not name a format and you cannot tell what you have, when a DVR refuses every format setting you try, or when you want to mix camera types on one recorder. Bring photos of the camera label, the back of the recorder and the cable connector, which answers most questions quickly. For any work on mains power, on high walls or on a roof, use a qualified electrician, and check local rules before pointing cameras at a neighbour's property or a public street.

Install or resell cameras?

If you install systems for customers, the biggest time saver is identifying the existing system before you quote: photograph the cable at one camera, the back of the recorder and its label, and decide on the spot whether you are replacing like for like or rewiring for network cameras. When a customer has working coax but a failing DVR, explain plainly that matching the old format is a short-term fix and that network cameras recording to their own cards do not all depend on one recorder. Bench test every network camera in the app, name it by location, and set its password before mounting, so the handover is a quick walk-through rather than a second visit. If you install or sell security cameras and want to discuss supply and dealer terms, see the Yoosee partner information.

Frequently asked questions

Can I connect an IP camera to my old DVR?

Usually not, because a DVR expects a video signal on coax and an IP camera sends data on a network cable. Some recorders, often called hybrid recorders, accept both kinds of input. Check your recorder's manual or label before buying cameras to plug into it.

Can I reuse my existing coax cable for network cameras?

Not directly, because network cameras need network cable or Wi-Fi. There are adapters that carry network data over coax, but they add cost and points of failure. In many homes a Wi-Fi camera, or a new network cable run, is simpler.

Is a TVI camera the same as an IP camera?

No. A TVI camera sends a high-definition analog signal over coax to a compatible DVR, while an IP camera sends digital data over a network. Both can give a sharp picture, but only the IP camera connects to your network and phone on its own.

Do network cameras need the internet to record?

On most models, no. A camera with a memory card records locally even if the internet drops; you just cannot watch remotely until the connection returns. Check your model's manual for how it handles recording during an outage.

Are Wi-Fi cameras and IP cameras the same thing?

A Wi-Fi camera is one kind of IP camera: it sends network data, just without a cable. Wired IP cameras use a network cable instead, often with PoE for power. Both join your network and can be added to the app.