NVR vs DVR: What is the best decoder for your security cameras?
It would be unfair to be of the assumption that we all know what an NVR and a DVR mean. But to those who don’t know and are looking to make a purchase of either item, it is imperative to know what the acronyms are(NVR/DVR).
NVR – Network video recorder
DVR – Digital video recorder
When shopping for a camera security surveillance system, you are more likely to have options to put your purchasing power (funds) on a DVR/NVR. Its a given both records and stores video files, performing similar functions- playback and recording. What might differ on how they perform their functions and what camera can be connected?
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From our last blog article, we discussed;
NVR RECORDS VIDEO DATA TO A SERVER COMMONLY USED IN COMMERCIAL SECURITY.
NVR cameras store video film on one or different digital storage devices, like hard drives, solid-state drives, and flash drives. These drives can be put away on location. Be that as it may, for organizations with more perplexing security concerns, NVR drives can be stored off-site as an additional measure to keep an interloper from accessing the server.
- A single Ethernet cable that provides power, video, and audio.
- Power over Internet (POE). No power splitters or wall sockets are required.
- Digital Internet protocol (IP) cameras process video. Each camera comes equipped with a processing chip that streams the video to the NVR system for storage. This is more efficient than a traditional video recording.
NVR frameworks encode and measure the video information from the camera, at that point stream it to the NVR, which is utilized for capacity and far off the survey. Since information is being moved from the surveillance camera to the capacity drive, the surveillance cameras should be associated with the Internet. Accordingly, NVR drives are utilized with IP cameras that have a web network. However long the cameras and recorder share the same network, the system can record and save documents. Cameras don’t need to be connected with the recorder, nor is there a requirement for power splitters.
NVR is a more up-to-date innovation that gives upgraded video recording capacities and more highlights and features, for example, audio recording, contrasted with more conventional DVR systems.
What cameras do Network Video Recorders use?
NVR or Network Video Recorders record video data that is created or “encoded” by network security cameras, also known as IP cameras for short. There are two major types of IP cameras that are used with an NVR:
- PoE Cameras are wired IP cameras that use Ethernet or networking cable to provide power and data.
2. Wireless IP cameras, also called a wifi security system, usually require a power source and connect wirelessly to a WiFi network.
Power over Ethernet cameras offers the most convenient because they receive a power and data connection over a single cable. PoE eliminates the need for a power source nearby and does not rely on intermittent wireless connections. Another big convenience is the plug-and-play feature that is prevalent in IP camera systems when purchasing compatible equipment. Plug and play compatibility makes installation and configuration a breeze. This is because plug-and-play systems will automatically configure IP cameras to connect and record to an NVR system.
Wireless IP Cameras offer some accommodation yet are not dependable for proficient surveillance systems. Wireless cameras work by having a power source close by and connect via WiFi radios to a remote switch or network. While the possibility of wireless or WiFi surveillance cameras sounds promising, it is filled with impediments and requirements for support i.e maintenance.
Remote surveillance cameras are incredible when their limits of utilization are considered. A 4 camera remote surveillance camera framework is absolutely feasible for a home that is no bigger than 2400 sq ft with a couple of provisos:
- The cameras should be associated with a 110V AC electrical plug close to a continuous power
- The WiFi signal way from the switch/router or WiFi access can’t be more than 250ft (clear view)
- The WiFi signal arriving at the camera should have a 90% signal strength. You can check WiFi strength at a specific location using a mobile phone.
Wireless is likewise extraordinary for situations where it is unimaginable or too exorbitant to even consider running a wire. For instance, if there is a cleared parking area that requires surveillance cameras, it could be the most effortless to convey wired IP cameras matched with WiFi Access Points to make the remote. While expensive, the outcomes are great.
DVR HAS LONG BEEN USEFUL IN RECORDING AND STORING VIDEO, BUT IT LACKS SOME KEY CAPABILITIES COMPARED TO NVR.
DVRs require the use of power splitters and wall sockets. The cameras used by a DVR system must be analog, which is not connected to the Internet. In a DVR system, the analog cameras stream an analog signal to the recorder, which then processes the images. Cameras must be connected to the recorder via a coaxial cable—one limitation of coaxial connections is that they do not provide power, so an additional connection for power is needed.
- One coaxial cable and one power cable per camera are required.
- Coaxial cable is typically larger and takes longer to install than a single Ethernet cable.
- All security cameras require a power source. This is often accomplished through a power splitter.
- Analog cameras and DVR are not connected to the Internet. The DVR processes and stores video footage.
While there is less flexibility in what type of camera you can pair with your DVR system, cost savings are to be had, as CCTV and DVR setups are less expensive than IP cameras paired with NVRs.
HOW MUCH STORAGE DO YOU NEED?
Whether you’re using a DVR or NVR setup, saving footage locally or to the cloud, there’s no way around it: you need ample storage space. To figure this out, consider the size of your organization (in terms of square feet, number of employees, annual revenue, insurance premium cost, etc.) and whether or not the cameras should record continuously. It makes sense for a retail store to record 24/7, but a construction site might benefit from recording only during non-work hours.
The more your cameras record, the more storage you need.
As an example, if your IP camera setup consists of:
- Six cameras
- 2 MP resolution at 18 frames per second
- 8 hours per day of recording, and
- 30 days of storage before the system’s memory resets
You will need at least 750 gigabytes, or 0.75 terabytes of storage—if that seems like a lot, well, it is! However, that amount of storage is pretty common. Want higher-resolution or more than six cameras? You’ll need even more storage space. Use a calculator to estimate how much storage you might need.
THE MAJOR DIFFERENCE BETWEEN NVR Vs DVR COMES DOWN TO INTERNET CONNECTIVITY. IP CAMERAS OFFER A RANGE OF BENEFITS.
Every security camera setup is different, and some—IP cameras with NVR, in particular—are more expensive than others.
So, you might wonder, do you need IP cameras? Won’t analog work just fine?
Those are great questions! Those are the exact questions you should ask yourself, and it’s probably what your security provider will ask when shopping around for quotes. For example, a hotel owner who needs a dozen security cameras that record in high-definition will probably lean towards an IP camera system. It might be a different story for a small business owner who needs only two or three cameras and does not need to surveillance long hallways or outdoor areas. Let’s get into more detail about IP cameras, beyond what is discussed above. Compared to analog cameras, IP cameras:
- Can store footage at a higher frame rate
- Can produce better image quality
- Support an unlimited number of NVRs
- Allow users to remotely access and view camera footage
- Are cloud compatible
Businesses that use IP cameras can store video locally and to the cloud. Saving footage to the cloud makes for quick access—you can log in from anywhere to watch the footage. However, some security providers charge an additional fee for cloud storage. Cloud storage capacity is limited, too, so if you need more storage, expect to pay a premium. The good news: cloud storage is not your only option. NVR systems can record and store footage locally through an SD card, a good storage option for those who do not want to pay extra.