DVR Meaning: Digital Video Recorder in CCTV and on TV

DVR stands for digital video recorder: in CCTV, it's the box that takes video from analogue-style cameras, converts it to a digital format and stores it on a hard drive. On a TV, the same term means a set-top recorder (usually called a PVR in the UK) that lets you pause, rewind and record broadcasts. You can compare models in our CCTV recorders range, or browse the TV & Monitor accessories if you need a screen to view footage on.

Whether a CCTV DVR is still worth keeping comes down to three checks: its channel count, the maximum resolution it can record and whether it supports remote viewing.

What does DVR mean in CCTV (and on a TV)?

DVR is short for "digital video recorder", per the Cambridge Dictionary and Collins, and the name covers both a living-room box and a CCTV recorder.

The term means the same thing in both contexts; only the source of the video differs: broadcasts on a TV, cameras in CCTV.

On a TV

A TV DVR is a home electronic device that records shows to a hard drive so you can watch them whenever you like, as Computer Hope describes it. Wikipedia notes the same device is called a PVR (personal video recorder), particularly in British English. "DVR vs PVR" is therefore mostly a regional label, not two technologies.

In CCTV

A CCTV DVR records video from surveillance cameras onto an HDD or SSD, per the eocortex CCTV glossary. It is traditionally paired with analogue cameras on coaxial cable. The recorder digitises the signal, stores it and decodes it again for remote viewing, as Pelco's DVR and NVR guide explains.

A current example is our 16 Channel 5MP Hybrid DVR Recorder (XVR-3116HS-5MP-LITE) at £109.02 including VAT. Check its product page and datasheet for exactly what is supplied and supported.

For a fuller walk-through of the CCTV definition, see this explainer on DVR meaning in CCTV.

What does a DVR actually do in a UK CCTV system?

A DVR digitises video from analogue-style cameras, writes it to disk, and decodes it again for live viewing and playback. Each camera sends a raw video signal down its cable. The recorder, in Pelco's words, "encodes the signal, stores it, and also decodes it for remote viewing". In a typical analogue setup the cameras do no recording themselves, though some cameras can record locally.

Hybrid, 5-in-1 and Penta-brid labels

These are marketing names for a DVR that accepts several analogue signal formats on its camera inputs, so you can mix camera generations on one recorder. Some models also take IP cameras alongside the analogue ones, and only those leave that upgrade route open. The split of analogue to IP channels varies by model, so read the datasheet before you plan a mixed system.

Our 16 Channel 5MP Hybrid DVR Recorder (SKU XVR-3116HS-5MP-LITE) is listed at £109.02 including VAT.

What's on the box

Storage and viewing options differ from one DVR to the next, so check both before you buy. The datasheet should tell you which drive types the recorder accepts, whether external storage is supported, and how remote viewing is handled.

A monitor connects straight to the recorder for local viewing. Check the datasheet for the output types, since they decide whether your existing screen will plug in.

How do you identify an inherited DVR and check its limits?

Count the BNC inputs, read the model label, compare recorder and camera resolution, then test remote access and inspect the drive.

1. Label and channels. Note the model number on the label or underside, then count the BNC sockets on the rear. That count identifies the analogue inputs, usually 4, 8 or 16. Check the model's specifications for any additional IP-channel capacity.
2. Input type. BNC coax inputs mean analogue-style cameras. RJ45 network sockets for cameras would point to a different kind of recorder.
3. Resolution. Find the maximum recording resolution in the datasheet or the menu, then check the cameras' own resolution. You record at the lower of the two, so a 5MP recorder fed by 720p cameras still records 720p.
4. Remote viewing. Confirm it is switched on and works from a phone. Check that the manufacturer still publishes firmware and that its app is still supported.
5. Drive. Open the case or check the menu for a single SATA bay, whether the disk is surveillance-grade, and the date of the oldest footage. That date is your real retention. The disk may also hold the previous owner's footage, which can be personal data, so decide who controls it before reuse.

Warning signs

• No spare channels for planned cameras
• No remote access, or an app and firmware that are no longer maintained
• Drive errors or a disk that is not surveillance-rated
• A resolution ceiling below what the cameras can output

Resolution reference points

720p is 1280×720, under 1MP. 1080p is 1920×1080, about 2MP. If the ceiling is the problem, our 16 Channel 5MP Hybrid DVR Recorder is listed at £109.02 including VAT, but check its per-channel limits in the datasheet first. Stock status is shown live on the product page.

Should you keep the DVR or migrate?

Keep the DVR if the coax runs are sound, the images are acceptable, and the recorder has spare channels, a healthy disk and working remote access. If it fails any of those, replace the recorder, not necessarily the cameras. Move to IP only when you need more channels or resolution than the DVR can offer. For the DVR/NVR basics behind that choice, there is a fuller explainer on DVR meaning in CCTV.

Keep it when

• Coax is already in the walls, so there are no new cable runs to pay for.
• It is a small home, shop, office or warehouse site, which is the setting our DVR listings are written for.
• A like-for-like recorder swap is the cheapest sensible fix.

Migrate when

• You are adding many cameras beyond the channel count.
• You want a fully IP system.
• The old unit can no longer be supported or updated.

The middle route

A hybrid DVR keeps your existing analogue cameras working while leaving room to add IP cameras later. Check the datasheet for how many IP channels a given model accepts.

The 16 Channel 5MP Hybrid DVR is £109.02 including VAT. It takes internal and external storage and supports remote viewing and playback. Your own electrician or installer fits it, and the product's installation guide covers the setup.

Shop at https://cctvmaster.co.uk or ask about trade pricing.

DVR vs NVR: what's the short version?

A DVR encodes video itself from analogue-style cameras on coax, while an NVR records digital streams that IP cameras send over the network.

Pelco lists camera choice, cabling and installation, how the video is processed, and running costs as the main differences. In a DVR system the recorder does the encoding. In an NVR system the camera has already done it before the footage reaches the recorder.

Keep a DVR if you have working coax cameras you want to reuse. Choose an NVR for a new build or any IP-based setup. Reusing existing cable is a common reason DVRs are still bought. For example, the 16 Channel 5MP Hybrid DVR Recorder (XVR-3116HS-5MP-LITE) is listed at £109.02 including VAT.

If you are planning a system from scratch, our NVR Explained: What It Is & How to Choose guide covers the design side.