NVR Vs DVR Comparison - Difference Between Them?

nvr vs dvr comparison A video surveillance system can give you peace of mind as it provides an extra measure of security for your home or business establishment. Video security systems generally fall into two categories, NVR (network video recorder) and DVR (digital video recorder). The NVR vs DVR debate has been going on for a while, so which is better?

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To make the right choice you’ll need to understand how they work, their features, functions, similarities and differences. Both have the same purpose, protect your property, but they go about it differently.

DVR vs NVR Comparison Table

If you don’t have time to read all the difference between DVR and NVR or just want a quick overview, here’s a comparison table:

Feature	DVR	NVR
1. Definition	Digital video recording	Network video recording
2. Camera	Analog CCTV camera	IP camera
3. Camera Placement	Fixed	Flexible
4. Camera Type Support	Compatible with all analog CCTV cameras	IP cameras work with only specific types of NVR
5. Signal Stability	Stable	Less stable
6. Set up	Intermediate to advanced	Easy
7. Bandwidth Usage	Lesser	Greater
8. Cost	Lesser	Greater
9. Storage	Hard disk drive	Hard disk drive
10. Access	Remote access	Direct video access
11. Storage Upgrade	Yes	Yes
12. Resolution Quality	Lesser	Greater
13. Video Input and Encoding	The DVR does the encoding	The camera does the encoding

What is NVR and DVR?

Before we go over their differences in depth, let’s define each one.

What is DVR?

A DVR (digital video recorder) is a device that works like a video encoder. Using an analog CCTV camera, a DVR obtains an analog video signal which is compressed via H.264 and stored in a hard disk drive.

DVRs rely on a coaxial cable to connect the recorder and camera. While there is backwards compatibility with CCTV cameras, the latest models use new technologies to improve performance and quality. When you look at the latest DVR NVR debates you’ll see DVRs with HD-SDI and HD-CVI cameras for higher resolution.

Check out our detailed DVR buying guide in this post.

What is NVR?

An NVR (network video recorder) records video as it is being relayed over a network cable. An NVR is linked to an IP camera via a LAN or an Internet network. Depending on the set up you may still utilize an IP camera without an NVR. In this instance you’ll need a video management application for IP cameras.

Check out our best NVR system buying guide here.

How DVRs and NVRs Differ in Operation

When people ask what is the difference DVR and NVR, it can be summed as follows.

An NVR works with IP cameras and is a network video recording device.
A DVR is a video processor that works with CCTV analog cameras and also functions as storage.
A digital video recorder inputs data straight from the cameras. The DVR encodes and processes the information.
An NVR works like a computer program as the device inputs off the network. It is the IP camera that does the encoding and processing.
A DVR relies on analog cameras linked by a coax cable. An NVR utilizes IP cameras using a network cable.

Here’s a video that explains the difference between a DVR and an NVR.

What is HVR?

An HVR is a hybrid DVR NVR, i.e. it is compatible with NVR and DVR so you’ll be able to use IP and CCTV cameras. However the HVR is not strictly another type of video recorder as it is really an NVR variant.

Why You Should Buy an NVR System

Proponents of NVR systems say it is the better choice as it is more technologically advanced. Indeed a lot of commercial and business establishments are using it. Let’s take a look at its benefits.

Versatile

The NVR system is versatile, allowing you to set it anywhere provided the IP cameras and the NVR are on the same network. You can set up your NVR in hard to reach locations such as a closet, walls, ceiling, the attic, etc.

Easy to Set Up

The cable configuration is simple. NVR uses wireless technology and with Power over Ethernet, the NVR needs just one cable and a single PoE switch. This isn’t possible with a DVR because it needs more connections and set up takes longer.

Superior Resolution

NVR systems provide higher resolution than DVR. Combine it with IP cameras you’ll get sharper images. While DVR cameras usually top out at 1 MP, an NVR can go up to 5 MP.

Camera Control

One of the nice things about an NVR is that you control what cameras show up on your system. This is a nice option especially if you’ve got several cameras set up.

Simple to Use

NVR systems are available in wired and wireless versions, and both are easy to set up. In most cases you just need to turn the NVR system on and it commences recording and monitoring. Most NVR systems for instance, detect IP cameras if they’re on the same network as the NVR.

If you’re looking for high resolution video images you’ll find the IP technology very effective. It’s true that DVR systems also offer HD, but the quality is better with NVRs. This is the reason why a lot of commercial establishments like NVRs because of the superior resolution and quality.

What to Look for in an NVR

NVRs are very popular right now, so are you one of those thinking of getting one? Here are some factors to consider.

Processor

The processor in the recorder determines the number of channels it can play at the same time and at what resolution. The processor info may not always be easy to find, but the more channels the NVR supports the more powerful the processor.

Storage Capacity

NVRs are often bundled with 1 or 2 TB hard drives. These can be expanded to 4 TB or more. Some units can hold up to 8 hard drives and link them up, ideal if you want to record lots of footage.

Resolution

NVR systems offer higher resolution compared to DVRs. While most DVRs max out at 1080p, NVRs can and do go much higher. Look for NVR systems with 5 MP cameras if you really want high quality footage without grains.

Cameras

How many cameras do you need? Most NVRs have 4 to 8 but with extra channels that allow you to add more. Look also for those with sharp vision capabilities so you’ll be able to see feedback in the dark.

Remote Access

All the major brands offer an app and it’s something you should take advantage of. Ideally the app is intuitive and offers full playback control.

Durability

Do not settle for anything less than an IP rated weatherproof camera, especially if you’re going to use them outdoors. Indoor and outdoor use is also preferable.

Why You Should Buy a DVR System

In the DVR or NVR debate a lot of people will tell you they still prefer the DVR. As we’ll show here there are still good reasons to pick it up.

Affordable

DVRs are cheaper than NVRs. Analog cameras aren’t as expensive as IP cameras so these systems don’t cost as much. Most people are also content with 720p or 1080p resolution and don’t need the other extra features that come with NVRs.

Compatibility

If you’ve been using analog CCTVs for years, you’ll need to dispose of them if you’re going to use an NVR. With a DVR you’ll still be able to use your CCTV cameras. If you don’t want to worry about compatibility and if you need to overhaul your current setup, a DVR is more practical.

Less Bandwidth

DVR systems don’t consume bandwidth the way an NVR does. Even if you use remote access, a DVR doesn’t gobble up that much bandwidth. If you’ve got limited Internet data plans a DVR is more practical.

More Reliable Signal

DVRs provide consistent, stable signals. An NVR is dependent on your Internet connection so its performance could suffer if other devices use the Internet, i.e. desktop computers or mobile devices.

Lots of Options

DVR security systems are commonplace and competition is fierce. This has given rise to different types of DVR systems with lots of unique features. Some are equipped with USB or cloud for easy storage, while others have 2 TB drives.

The bottom line is if you’ve got an analog CCTV surveillance in place, you can still avail of a high resolution video by purchasing a 960H/WD1 DVR. Since DVRs use coaxial cables there is no need to buy new cables or rewire everything.

By going with an HD-SDI or an HD-CVI you’ll no longer need to replace your whole set up. Even so you’ll still get access to high resolution.

What to Look for in a DVR

Confused by all the options for DVRs currently available? Use the following as a guide. Many of the tips given for NVRs earlier apply here to and vice versa.

Frame Rate

Frame rate goes hand in hand with resolution. The higher the frame rate the smoother the footage and the more frequent it takes stills. A good DVR has at least a 30FPS (frames per second) rate.

Lighting

A DVR with infrared LED lights is able to see more than regular light especially in the dark. This is an essential feature especially for night vision cameras.

Audio

This is a matter of personal preference. Some like their video recording with audio while others don’t. If you want audio in the recording read the product description first.

Capacity

The capacity of most DVRs is 1 TB, but most can accommodate 2 TB and higher. The amount you can store depends on the resolution, i.e. the higher the resolution the more space will be consumed.

Compression

This is related to the storage. If the DVR has compression technology you’ll be able to squeeze in more data than usual.

Cloud

Some of these DVRs offer cloud storage, and you may find that reassuring. In case the DVR is damaged you’ll still be able to retrieve the footage.

Ease of Setup

This is where you’ll benefit from a reputable brand as their recorders are easier to install and set up. The best ones are plug and play and give you several options for adjusting playback easily.

NVR vs DVR Channels

Both DVR and NVR systems come in different sizes, and these are expressed in channels. The most common are, 4, 8, 16 and 32 channels. An 8 channel system means you can install and record 8 cameras, while a 16 channel allows you to install 16 cameras.

An 8 or 16 channel may seem like overkill if you only use 4. However it’s a good thing to have additional channel support just in case your needs increase. You can never tell when you’ll need more cameras so it is better to have the slots available.

Usability

NVRs are generally easier to install, but when it comes to using the devices both are easy to figure out as they have menus that you choose options from. On NVRs are a bit complex because of the need to set up an IP address. However, their automatic camera detection makes up for this.

DVRs do require a bit more cabling, but there is no need to program or set up the camera as it is ready to be used. These are also plug and play so no need to change other settings. Both NVRs and DVRs offer remote video access and high definition recording.

Wiring

No DVR vs NVR comparison will be complete unless we talk about wiring. For many people this is really what makes the difference. As mentioned earlier if you’ve got a CCTV system and coax cables it’s more practical to buy a DVR.

But if you’re in the market for a new surveillance system and want the highest quality resolution it might be better to invest in an NVR. Another benefit of an NVR they support wireless protocols so you don’t have t mess around with too many cables.

Camera Options

Aside from deciding whether to get a DVR or NVR you also need to consider the type of camera to use. There are a lot of different cameras, but the following are the most common.

HD-CVI

These are dependent on coaxial cables to relay data, similar to what HD-SDI does. The biggest difference is that HD-CVI has greater range. Even with a standard coaxial cable the signal can be transmitted up to 1500 feet. This feature makes it handy for those that length wire runs installed.

The HD-CVI system also lets you input the on-screen display of the camera from the recorder. What this implies is you’ll be able to modify the settings from the DVR and not have to tinker with the camera.

This is a very convenient feature especially if your camera is situated 10 feet high up outdoors. Now you don’t have to get a ladder and try to change the setting. An HD-CVI camera also lets you utilize CAT5 cable for video transmission.

HD-CVI currently has a maximum resolution of 1080p or 2 megapixels. For a lot of people this is good enough for security surveillance.

HD-SDI

An HD-SDI recorder or camera enables video transmission over coax cable similar to analog cameras. The cameras run on a 24vAC or 12vDC. The transmission range is from 400 to 600 feet, and quality depends on the cable used. These cameras come in various types such as PTZ, full size, drones and bullets. One of the drawbacks with these units is you need to adjust settings on the camera itself.

IP Cameras

Supported by NVR and hybrid DVR NVR systems, IP cameras use CAT5/6 to transmit data over networks just like what your laptop or desktop computer does. They’re packed with more features than regular HD cameras and offer higher resolutions. While 5 MP is consider the high end there are now 20 megapixel cameras available.

The advantages of an IP system is it lets you program the camera even if it is not connected to the NVR. You could for instance, set up your camera so it is connected to your network and use it minus a network.

There are a lot of options on an IP camera that gives you more flexibility and control, but there is a bit of learning curve involved here. Another shortcoming of IP cameras is the range is limited to 330 feet. For longer distances you’re going to need a booster or repeater.

IP vs HD Analog Camera Technology

The following table offers a quick comparison between IP and different types of HD analog technology.

Technology	IP	HD-CVI	AHD	HD-SDI	HD-TVI
Video Output Quality	True colors Sharp images High resolution	Excellent in daylight Not very crisp in low light	Good Colors not very accurate Image not as crisp	True colors 1080p Sharp clear images	True colors 1080p Sharp clear images
Maximum Resolution	5MP (2592 x 1944p)	1920 x 1080p	1920 x 1080p	1920 x 1080p	1920 x 1080p
Transmission Distance on Twisted Pair (CAT5)	328′	650′	492′	350′ (needs a digital converter)	700′
Transmission Distance on Coaxial Cable (RG59)	Requires media converter	1600′ (720p), 1300′ (1080p)	1600′	492′	1600′
DVR Input Compatibility – IP	Any configuration or channel for supported IP cameras	Supported IP cameras in select configurations and channels	N/A	N/A	2 channels for supported IP cameras, any kind of configuration
DVR Input Compatibility – HD Analog	N/A	Any configuration, any channel for similar HD-CVI cameras	Any configuration, any channel for similar AHD cameras	Certain types of HD-SDI cameras, configurations limited	Any type of HD-TVI camera in any configuration or channel
DVR Input Compatibility – Analog	N/A	Every analog camera, select configuration and channels	Select configurations and channels, all analog cameras	Limited configurations, channels and models	All types of analog cameras, any configuration and any channel
Format Compatibility	Cross compatibility restricted to similar brands Open standard	Patented technology	Open standard	Open standard	Open standard
DVR Hybrid Capabilities	Selected models with hybrid properties	Configurations are limited	Configurations are limited	Configurations are limited	Unlimited configuration

The information in the table above is for guideline purposes only. Refer to the product manual that came with your system to get its specifications.

So in the DVR vs IP camera debate, it’s clear that there is no single winner. It really depends on your needs so you need to look over the specs to determine which is ideal.

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Conclusion– Which is the Better Option?

We started this guide by asking the question what is the difference between DVR and NVR, and now you know what they are. So now the question is which is the right one for you?

It depends on what type of surveillance security you need. If you already have a CCTV camera, are on a budget and all right with a 720 to 1080p resolution, a DVR system is ideal. I

If you want an easy setup, high resolution IP cameras and don’t mind the higher cost, go for an NVR system. If you want a bit of both there is the HVR as it is compatible with DVR and IP cameras. Whichever of these you choose you’re going to benefit from their security features

Phenom Security

NVR vs DVR Comparison – Difference Between Them?