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What is a CCTV camera used for?

Closed Circuit Television (CCTV) is a television system in which signals are not publicly distributed, but are monitored, primarily for surveillance and security purposes.

CCTV relies on the strategic layout of the camera and the observation of the camera’s input on a monitor somewhere. Since cameras communicate with monitors and/or recorders over dedicated coaxial cable lines or wireless communication links, they obtain the name “closed circuit” to indicate that access to their content is limited to the design of the person who can see the content.

Old CCTV systems use small, low-resolution black-and-white monitors with no interactivity. Modern CCTV displays can be color, high resolution displays, and can also include zooming in on images or tracking a certain (or someone) function. Talking on CCTV allows the inspector to talk to people in the range of camera-related speakers.


CCTV is often used for a variety of purposes, including:

  • Maintain the safety of the mid-high security area and the perimeter of the unit. 
  • Observe the behavior of imprisoned prisoners and potentially dangerous patients in medical facilities.
     
  • Traffic monitoring.
     
  • Monitor sites that are harmful to humans, such as highly radioactive or toxic industrial environments.
     
  • Building and ground safety.
     
  • Obtain a visual record of the activity if it is necessary to maintain proper security or access control (for example, in a diamond cutting or sorting operation; in a bank, casino or airport).


CCTV found that observations from traffic observations (and automatic ticketing) to high crime rate areas or communities are increasingly used in law enforcement. The use of closed-circuit television technology has raised privacy issues in many parts of the world, especially in the UK and Europe, which have become a regular part of the police program.


Recommended CCTV system

IP Video Surveillance – An all-digital and advanced video surveillance system that delivers 5 mpx high quality images and 2560 x 1920 resolution. In an IP surveillance system, communication between a monitoring unit (IP camera) and a recorder (NVR recorder) and a display unit (usually a PC, tablet or smartphone) is done over an IP network based on the TCP/IP protocol. .

AHD video surveillance – is a direct development of analog technology. The system achieves high definition or full HD resolution. The camera is equipped with a digitizer, so it can transmit digital signals with continuous signals without quality limits. The logger does not perform the conversion of the analog signal to the digital signal, but only processes the received signal to enable its storage or display.

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In the United States, where is the security camera usually located in the elevator?

Installing a CCTV camera in an elevator can prevent intrusion and damage: the sliding door is forced or damaged, the button is blocked by gum, scratches, fire marks left by the lighter, etc.

This also helps prevent children from playing the elevator: up and down floors.

The elevator camera also allows you to take a picture between the floors, for example, if a person does not cross the first floor, it goes directly from the second floor to the third floor, and that person damages the third floor, you can track his passage.


Which camera do you want to install?

In the elevator, you can install a mini dome camera, an embedded camera in the control panel or a box camera.

You can use a fisheye lens for very short focal lengths.

The elevator is always on and there is no need to provide an infrared projector. We strongly recommend installing a vandal-proof camera.

Elevator cameras are generally accessible at the height of a person and are subject to damage.

The space of the elevator is very small, the backlash is very low (the elevator rarely exceeds 4 to 5 square meters), it is best to install a camera with a small sensor to obtain wide angle (for example 1/4″) and short distance (for example 2.8 mm) ) Small focal length when shooting, so that you can watch Geer well.

For even greater stability, we recommend installing HDCVI cameras instead of IP cameras, which sometimes require a reboot.

These cameras offer excellent image quality in high definition.


Installation

The camera is mounted with the lift and the lift securely attaches the camera to the rack.

The elevator camera is directly connected to a recorder located in the safe area of ​​the building.

You can take a reading after the camera (30 days) or watch live images.

In order to avoid signal loss, we do not recommend installing a wireless transmission system between the top of the elevator car and the top of the car. We recommend a power cable and multiple pairs of cables (defined by the height of the BU).

Is this legal?

It is perfectly legal to install a CCTV camera in an elevator if you follow certain rules:

– If the camera is a private place, please report it to CNIL; if the camera is open to the public, please apply to the state government for authorization.

– Save recordings for up to 30 days.

– Install the information panel.

– If it is a company, stop employees.

– If it is shared, get a majority at the shareholders meeting.

– Define one or more persons responsible for the system and readings.

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What is the bit rate of CCTV and IP cameras?

The bit rate of CCTV is very important for IP cameras, and it must provide quality without sacrificing bandwidth usage. The balance between frames per second (fps), resolution, and image compression affects the bit rate.

In this article, I will explain the CCTV bit rate in a very easy to understand way, so you will understand the factors that affect it and how to properly configure it on an IP camera.

I know that professionals who visit this blog are very dedicated and interested in learning new technologies, so it is important to read the full text to understand the details of CCTV bitrate.

I’m sure you’ve noticed that there is a bitrate setting menu on your IP camera or DVR, and of course you also notice some values ​​and units, such as 96kbps, 128kbps or similar 2Mbps.

Take a good look at the picture above and you will see some values ​​and units of measure, like this. Don’t worry, because now you will understand what they mean and you will be the best CCTV bit rate setting.

When you see the message as 96kbps, this means that the camera generates 96000 bits per second. Let us understand this step by step.


It’s time to understand the bit rate of Ansjer CCTV.

The bit rate is a measure of the amount of data that moves from one point to another over a given period of time.

In this case, the bit is moved (b) and the time unit used is seconds. So what I am talking about is the number of bits moved in seconds over a certain period of time.


This is why bps means “bits per second”

Therefore, when the term “bit rate” is used for closed-circuit television, we are talking about the concept of moving bits from an IP camera or DVR to a router and the Internet. For example, the higher the bit rate, the more bandwidth you use, your The more storage space required on a DVR, NVR or IP camera card.


Compared with real life examples

I want you to really understand this concept, so I will compare it to some simple things in our daily activities.

Imagine two people carrying boxes in a truck. The first person threw the box at the rate of one box per second to the second person.

Because the carrying rate is one box per second, we use the first letter to shorten the pronunciation of the sentence, so we say: 1bps

If these people increase the rate to two boxes per second, we would say that their working rate is 2 basis points.

Now that we know what the bit rate is, let’s see how it can be used for CCTV cameras, IP, DVR, NVRS, etc.


IP camera bit rate configuration

Now I will show you the use of bitrate in IP cameras with different resolutions, frame rate (fps) and compression settings.

Please note that when one of the parameters changes, the use of the camera bit rate is also reduced, and no perfect and versatile value is available, everything will depend on your CCTV project. You need to know what to adjust the parameters accordingly.

The camera used in this example is the SNB-6004 2MP model manufactured by Hanwha Techwin (formerly Samsung Techwin). The software used for measurement is called the wisenet device manager and can be found at the following link: wisenet device manager

In the first example, the configuration values ​​in the IP cameras are changed and the use of the software displays these changes.

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What is the useful of CCTV in catching thieves?

How did CCTV catch thieves – even if the thief was stolen

There was a time when robbers and thieves could escape arrest and if they cleaned themselves, they peeked at any CCTV or security camera containing evidence of the crime – but no longer. Thanks to the miracle of modern technology, CCTV systems can now send videos directly to homeowners and safely upload them to the cloud, regardless of whether the physical cameras are taken or destroyed.

Two opportunistic thieves discovered this in Sutton Worcester Park earlier this month, which is not good for them. The couple were happy to rob a home on St. Clair Avenue, filling their garbage bags with cash and jewellery until one of them discovered that mobile monitoring equipment recorded their progress. In order to cover their whereabouts, the couple also side-by-side – but they did not do so until they uploaded the important video of the kisser to a secure website on the Internet.


The police asked to arrest incompetent liar

The police released a picture of CCTV, clearly showing the expression of the two men when they were sneaking around on Saturday, July 2nd. They are now calling for information, trying to grab the sucker – and their cups are full of tabloids, which is definitely a matter of time before justice is done.

The first suspect was described as a medium-sized white goat with a hoodie, dark trousers and sneakers, while the second bandit was a slim white man with short hair and a chin. With a beard and a shallow top with a dark collar.

The Metropolitan Police has asked anyone with any information to call them 101 and quote the first leader number 217923 or the second one of 217924. Alternatively, they can also call anti-criminals and leave an anonymous report on 0800 555 111.


Advanced technology to protect your home

With the unstoppable development of technology, the security of your family has also improved. The advanced CCTV system not only records and records any suspicious activity in or near your home, but also alerts you when burglary is still in progress, allowing you to contact the police (or cancel in the event of a false alarm).

In addition, at Blackburn Alerts, we can install intruder alerts, fog machines and fog machines, and even implement access control systems in your home, allowing you to monitor incoming and outgoing traffic with the push of a button and prevent any unwanted Visitors enter.

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Which is the best CCTV camera?

Home security is increasingly becoming a technology focus. While personal security, whether facial recognition or encryption, has become an important part of everyday life, we are happy to provide dozens of applications details for our Ubereats Drop-Offs or Amazon Prime Deliveries.

There are so many goods, parcels and services delivered to your doorstep, and ensuring the safety of your home is a major technological trend.

Technology companies have been working hard to innovate in the field of connected home CCTV cameras. Large investments such as Google’s Nest, Netgear and emerging security company Ring have made home security cameras even more prominent.

But what kind of security camera do you need? Do you really have to spend £200 or more to buy a good one? The Daily Telegraph has researched some of the top security technologies so you can equip your home.


What to look for in a CCTV camera

Smart home security cameras must be able to identify visitors and send alerts to keep your home safe when you are away. Most smart home cameras now connect to an app, such as the Nest or Ring app, to monitor your home when you’re on the go.

Key features of the best home security cameras include night vision, notification alerts, a large amount of cloud storage for your recorded videos, and a microphone for voice commands.

Others will have audio capabilities, especially for indoor security cameras that monitor for unusual noise. Some advanced cameras also have facial recognition features that are expensive, such as Nest IQ.

Several CCTV cameras can be integrated into your smart home and connected to technologies such as Google Assistant or Amazon Alexa. You can find the complete classification of the best smart home products here.


Wireless camera and power supply

One of the main functions of the home security camera system is its power supply. If the camera is battery powered, you can place it anywhere with almost no wires, remove it and recharge it when the battery is low, usually through its application.

Many smart security cameras are wirelessly connected to smartphones, although many require installation and have wired power instead of batteries. This means you have to find a suitable place to set them up and connect the camera to the power source.


Indoor and outdoor CCTV camera

Another major decision to choose a home security camera is whether you need an indoor or outdoor camera. Outdoor cameras are usually more durable, but they may be more difficult to install than a simple home security camera that can be placed on a table.

Outdoor cameras are usually equipped with a set of screws and brackets for installation. Alo and other models offer a variety of mounting options for you to choose how to set up your camera.

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Does CCTV work in the event of a power outage?

When you want to find peace at home, an alarm system can help you make changes and make your home feel safe. However, many people want to know what happens to their family safety if there is a power outage. A blackout can be terrible, knowing what your security system will do can make your mind relaxed.

The type of home security system you install determines what happens when your home is powered off. There are a lot of security systems out there, so if you are often a victim of a power outage, you will want to make sure you have a system that protects you at those times.

In this article, we will discuss your “protection of the United States” home security system in response to a power outage, and what you can do to stay safe!

spare battery

In the event of a power outage, your “Protect America” home security system will be backed up with a backup battery for 24 hours after an AC power failure. If the home security panel does not receive power, the battery will usually run out.

The battery will automatically charge when AC power is restored. During charging, the panel reports that the battery is low. If you have a mobile phone or broadband monitoring, you will be notified via the keyboard.

For those who have fixed-line monitoring, you will be notified via email or a touch-tone landline keypad. If the system’s low battery report is still unclear after 24 hours of AC power recovery, please contact Protect America Technical Support.

One safety precaution you can take is to have a 24-hour battery in your home security system to prevent the backup battery from running out.

This decision determines how long power outages in your area usually, which can be a very valuable option. It is worth noting that Simon XT will be powered by battery, but XTI will not.

System type

If your alarm system is monitored by a landline, it will continue to communicate with the monitoring center when power is lost. Cellular monitoring is usually a safe bet, as well as in the event of a power outage. Just like a mobile phone, as long as the backup battery is working properly, communication will not be affected by partial power outages.

Broadband monitoring is most vulnerable to attacks in the event of a power outage, as power outages often also cause Internet outages. If there is no Internet connection to the monitoring center, these types of systems will stop communicating until the power is restored.

If you have broadband monitoring, consider the following tips to help you stay safe while powering down.

Ready to power off

Power outages are a big inconvenience. However, they sometimes happen. Under normal circumstances, many criminals avoid homes with security systems. When power goes out, some thieves think this is an opportunity to find vulnerable families. Here are some ways you can stop criminals from targeting your home.

First, prepare some simple power supplies to prevent you from being disturbed during a power outage. For example, if the power is interrupted, consider keeping a flashlight with an extra battery in the designated area.

A flashlight can help you move around the house safely. Some homeowners choose to camp with kerosene lamps to provide light. Try to avoid using candles. Keep in mind that these may be fire hazards.

Keeping some kind of light visible during a power outage can greatly deter criminals. If the thief can see that your house is occupied, they are less likely to target your house.

Having a built-in safe is a great way to protect your valuable property, especially if you plan to leave your home. Some homeowners decided to hardwire the generator to the switchboard.

If you choose to use a generator or already have a generator, make sure the home safety system is in one of the generator-powered circuits.

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What is the difference between CCTV and surveillance?

The key difference: Basically, CCTV and surveillance cameras are cameras with advanced technology. Closed-circuit television (closed-circuit television) transmits signals to specific monitors located in remote locations; surveillance cameras typically operate over IP networks that connect secure (monitoring) cameras from remote locations to major locations.

Cameras are used to protect or protect their respective places. Early cameras were used to capture images in a specific place at a glance; but now their applications have increased, they can be used to record video from farther distances and to observe specific areas. With the development of technology, various cameras have emerged. The most widely used ones are closed-circuit televisions and surveillance cameras. Due to their efficiency and efficiency, they have received extensive attention in many industries.

CCTV, also known as CCTV, is a camera that covers a specific area and can be viewed on a designated monitor screen. It uses advanced vision capture technology and uses its camera to transmit signals from a specific location to a limited set of screens or monitors where specific needs are needed.

CCTV is a wide range of vision and sensor technologies that work by capturing pictures and videos from specific areas captured and recorded with the help of sensors and high-megapixel cameras. This makes searching and discovering crime, hackers and other illegal works that need to be collected and stored more effective.

Surveillance cameras and their systems use advanced camera technology. These systems are also known as automatic license plate recognition systems in which images or information are actually stored, received, transmitted, processed or inspected. These cameras are typically connected to an IP network, which helps connect the network from a remote zone to a designated secure zone. Today, in many public sectors and government departments, these surveillance cameras have been used extensively to ensure the security of their respective regions.

These camera technologies are of great importance in many industries for their efficiency and work efficiency; because CCTV is used in many industrial sectors, it captures and records every activity and task in the industrial sector; Then act as a security camera. It covers a large number of areas in the public sector. In general, surveillance cameras work on IP connections, so they are suitable for remote video recording and capture. CCTV cameras are used in public sectors such as shopping malls to avoid any such unwitting losses.

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Can we jam the CCTV camera?

Can thieves interfere with your wireless security system?

Any product that promises to protect your home should be subject to more rigorous scrutiny. For this reason, you will find a lot of strong opinions about the potential weaknesses of popular home security systems, which is not surprising. After all, home security is a bit like playing chess – you want your system to lead as much as possible to the bad guys.

By far the most likely burglary is a simple opportunity crime, usually involving a broken window or other cruel forced entry. According to the US Federal Bureau of Investigation, in 2013, such crimes accounted for about two-thirds of all residential thefts in the United States. Most of the rest are illegal, unrestricted entry, due to things such as windows or garage doors being opened. The possibility that criminals use technology to bypass the security system is so small that the FBI does not even track these statistics.

A major theoretical home security issue is whether a given system is easily blocked from work. With wired settings, the fear is that thieves can shut down your system by cutting off the correct cable.

With wireless settings, you can install battery-powered sensors at home, monitoring windows, doors, sports, and more. If they detect a failure while the system is on standby, they will send a wireless alert to the base station and the base station will issue an alert.

This approach will eliminate most of the jumper disconnection problems – but their wireless analog interference? How to prevent the thief from interfering with your settings and preventing the alarm signal from reaching the base station by tuning the correct device to the correct frequency?

As mentioned earlier, the likelihood of such an attack is low – whether successful or not – but let’s look at the facts.


Wireless Jamming 101

The interference problem is nothing new, nor is it a problem unique to the security system. Any device that can receive a wireless signal at a specific frequency will be overwhelmed by a stronger signal received at the same frequency. In contrast, suppose you want to “jam” the conversation between two people – you just need to yell at the ears of the audience.

The interfering radio station needs to know its broadcast frequency and the appropriate equipment to interfere with the frequency. It also requires criminal intent because interference is highly illegal. It is often illegal to buy or sell these devices that are not properly certified.

Security devices need to list the frequency of their broadcasts – which means that potential thieves can find the information they need to know with the least amount of Google search. However, they need to know what system they are looking for. If you have a sign in your yard that says the device you are using, it will point them in the right direction, although at this point we are talking about a high-target, semi-complex attack, not It constitutes a forcible entry attack for most burglary.

At certain frequencies, it is easier to find and acquire interfering devices than at other frequencies. For example, there are many common radios that can broadcast over a frequency range of 400 MHz, making it easier to find things that can jam at these frequencies from the shelf.

Countermeasures

Wireless security providers typically take steps to help counter the threat of jamming attacks. Simplisafe, our editor-selected winner, uses a proprietary algorithm that separates occasional RF interference from target interference attacks. When the system thinks it is blocked, it notifies you by a push alert. From there, you will be manually alerted.

Simplisafe was singled out in a recent article on interference, along with a video showing that the entire system was effectively bypassed by handheld interference devices. After taking appropriate steps to control RF interference to the lab, we tested the attack for ourselves and verified that it is feasible to use the right equipment.

However, we also verified the effectiveness of Simplisafe’s anti-jamming algorithm. It captures our behavior, alerts my smartphone, and lists our RF interference in the system’s event log. The team behind the article and the video didn’t mention the algorithm, nor did it mention whether it detected them.

We like the proprietary features of this software. This means that thieves may not be able to work through the Google search algorithm and then find a solution. Even if they can, Simplisafe claims that its algorithm is always evolving, and it is slightly different between different systems, which means there is no universal magic formula to crack it.

Other systems seem to have confidence in the interference issue. Frontpoint’s team discussed this issue positively in a blog post on its website, citing their own anti-jamming software, and claiming that since the company began offering wireless security sensors in the 1980s, there have been no successful anti-jamming attacks. Record the case.

Rationality problem

Interference attacks are absolutely possible. As mentioned earlier, with the right equipment and the right technology, it is possible to interfere with any wireless transmission. But how reasonable is it that someone will successfully squeeze into your home and steal your belongings?

Let’s imagine that you live in a small house with wireless security settings that provide a functional anti-jamming algorithm, just like the algorithm we tested from Simplisafe. First of all, thieves need to target your home, especially. Then he needs to know the technical details of your system and get the specific equipment needed to interfere with your particular setup.

Probably, you will lock the door when you are not at home in the evening, so the thief still needs to break in. This meant somehow breaking the lock or breaking the window. He needs to interfere with you at this point because a broken window or open door usually triggers an alarm. So, the same is true for your home’s motion detectors, so once the thief enters the room, you need to continue to interfere and look for something to steal. However, he needs to do this without stumbling the anti-jamming algorithm, and he almost certainly cannot access the details of these algorithms.

There is no conclusive data on the frequency of interference as a form of theft technology, but when you start thinking about these real-world practices, it is easy to accept requests like “a frontier”, and interference attacks are rare. It’s hard to imagine that our hypothetical thief would choose a house with no security system at all.

Bottom line

In the end, these systems were designed primarily to prevent opportunistic shattering and looting attacks that constitute most burglary. They are also just a single layer, ideally a multifaceted approach to protecting your home, including common sense things like solid locks and proper nighttime exterior lighting.

No system is impenetrable, and no system guarantees complete elimination of the worst. Each of them has weaknesses, and theoretically knowledgeable thieves can exploit these weaknesses. A good system is a system that makes the worst case as untrustworthy as possible and provides strong protection in the unlikely event of a serious attack.

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Can we run CCTV without a hard drive?

The hard drive is an integral part of any CCTV system. Without it, the camera can only provide a real-time view of the focus area. For general reference and crime prevention purposes, the recording unit relies on the hard disk to store all high definition video. Similarly, computers require multitasking and hard drives require multitasking.

  • Run continuously for weeks or months
  • Multiple cameras simultaneously recording
  • View videos from mobile or desktop apps

How many of these sounds are familiar to your CCTV system?

So now that we’ve determined why we need a hard drive and that it can handle long-term heavy use, what should you watch out for when choosing a hard drive for your recording device?

Storage

The larger the drive space, the more data is stored. The MaxxOne Recording Unit supports up to 8TB hard drives, and 16+ channel models typically support 2 or more of these drives.

Transfer speed

Although there is no minimum transfer speed requirement, a hard drive can operate at 7200 revolutions per minute (rpm), which always executes a 5400 rpm drive. The more RPM a drive can perform, the faster it will transfer data (images).

Cache space

When a hard drive needs to transfer data to another part of the drive, it uses a special portion of memory called a cache. A larger cache means that the hard drive can transfer this data faster.

At MaxxOne, we prefer to install our recording equipment on a monitor-class hard drive to increase inner peace. The monitor-class hard drive can run longer and use less power than a standard desktop. The Seagate Skyhawk and Western Digital Purple Series are a great complement to any system, which is why we’re happy to recommend it for use with any compatible CCTV setup.

If the budget is a bearing factor, any 3.5-inch desktop hard drive will work in the MaxxOne recording unit, and we offer all DVR and NVR range options. Like surveillance-class drives, Seagate and Western Digital are our first choice when installing regular desktop drives.

To find out how much hard disk space you need, check out the examples below based on a 24-hour recording plan. Depending on how often the focus area moves, the motion triggers the recording plan to require much less hard disk space.

Monitor and CCTV hard drive

Safety is paramount, and with the extinction of Celuoid and videocassettes, it is natural for CCTV and surveillance tapes to be fully digitized. More and more cameras are appearing in cities around the world, and all these hours and hours of video need to live somewhere.

More importantly, it must be stored somewhere, with the click of a button, it can be easily accessed, or whatever is good, worth a day or record, and there is no way to access it effectively in real time. Hard drive manufacturers are once again aware of this fact and have been producing specially designed hard drives for large writes (recording data to disk) and large numbers of reads (retrieving data from disk and retrieving data from disk) behavior)!

Use our hard drive selection tool to help you choose the right digital monitor drive. First, you need to select a video recording that is directly connected (commonly referred to as a cable camera) or a video connection for a network connection, that is, when data is recorded by the camera but sent over the network/Internet to the recording device of the storage hard disk.

The main advantages of CCTV video surveillance hard drive

  • Hardware compatibility test
  • 7200-rpm performance.
  • SATA 6Gb/s interface optimizes burst performance
  • High-performance drives deliver reliable performance even with hard drive track widths of only 75 nanometers.
  • The new generation of hard drives has improved overall performance by 45% over the previous generation.
  • RoHS Directive for Hazardous Substances and Voluntary Restriction of Halogen Compounds
  • 70% or more of the materials used to make the drive are recyclable.
  • Low power consumption

What can I do to increase storage capacity?

Customize the frame rate of each camera to a rate that you are satisfied with. Reducing fps (frames per second) from 30 fps to 7.5 to 15 fps will greatly increase recording time without compromising quality.

There are a few exceptions. For example, if you are monitoring a cashier or capturing a license on a moving vehicle, we recommend that you record at the highest possible frame rate, which is 30 fps for most DVRs.

CCTV camera professionals proudly maintain an ongoing testing program that involves systematic equipment testing, enabling us to sell confidently and thrive as a tried-and-tested video surveillance company.

If the number of cameras involved is less than 10-12, it is recommended to install an analog camera and DVR.

If the installation requires more than 15 cameras, it is best to use an IP camera and use an NVR. This provides a good range for future upgrades.

If the installation involves a large number of analog and IP cameras, it is best to use a hybrid NVR that can entertain analog and webcam recordings.

For all large installations in public places such as airports and public transportation facilities, it is best to choose IP camera installation. But usually, we will observe that the analog and IP cameras are mixed together when the IT executive performs the monitoring operation.

Specifically, about 4-5 years ago, all large or small surveillance devices were equipped with analog cameras. However, due to the development of technology and the greatest benefits, the development trend of IP cameras is being observed. Therefore, in order to keep up with current trends, monitoring managers either replace their devices with simulated IP or do their best to combine the two technologies with the help of a hybrid NVRS and video management system.

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What is a CCTV server?

There are many ways to use the Internet to enhance your digital video security system, one of which may be to use a CCTV video server. Although digital video recorders or DVRs are the center of power stations for digital video security and surveillance systems, CCTV video servers can be considered as their peers. The main difference between the two is that CCTV video servers are dedicated to the Internet.

A typical digital video security and surveillance system works as follows:

1. The digital camera captures the video image and sends it to the DVR (or point monitor) via a video transmission cable (the cable here is usually RG59).

2. The DVR processes the video data; it compresses it using a codec (compression/decompression) utility that reduces the size of the file but maintains the high quality of the video image.

3. The DVR records the video to a hard drive or HDD and displays the image on the monitor.

In the above example, the system is usually independent of a particular geographic area because the camera must be connected to the DVR via a cable. There are wireless cameras and other devices, but in most cases these systems are still in a specific location.

The CCTV video server is used as an auxiliary device for the old analog system. A typical analog video security monitoring system with a CCTV video server works as follows:

The analog (or digital) camera captures the video image and sends it to the CCTV video server via the video transmission cable (RG59). Note that video servers typically work with analog systems, but may also work with digital systems.

The CCTV video server processes the video data; it compresses it using a codec. Typically, a CCTV video server will use multiple codecs. For example, the server can use the mjpeg technology to save the video image of the camera to the HDD, but for videos that can be viewed over the Internet, H.264 can be used to “transfer” the video to the destination.

In addition to settings, CCTV usually does not use a monitor. Typically, its video source is processed (for example using H.264) and sent over the Internet, downloaded on the Internet and viewed on any compatible computer.

As you can see, the biggest difference between a DVR and a video server is that the image remains local to the DVR, while the CCTV video server digitizes the analog signal and makes it accessible through efficient streaming on the Internet. The CCTV video server experience has advantages and disadvantages. In the following paragraphs, we will mention a few of them separately.

(On the other hand, since each camera contains its own web server technology, the security camera King hardly needs a CCTV video server equipped with the latest DVR. Each camera in the system can be accessed via the Internet via the DVR OE.)

Perhaps one of the biggest benefits of all CCTV video servers is the ability to watch analog video over the Internet. For analog systems, especially cameras, it is not possible to have a video server.

Another great benefit of CCTV video servers is that the device can save video images to their hard drive or send them to a DVR for recording to their hard drive and stream them simultaneously over the Internet. This may sound less impressive, because Safe Gold’s functional digital system makes it easy to do all of this and more. But this is a convenient way to use the old analog cameras with the Internet.

The disadvantage of using CCTV video servers and analog cameras is that if the Internet is down, you will not be able to access the system remotely. In addition, a slow connection will result in a very slow monitoring experience.

One last thing: Don’t confuse CCTV video servers with Network Video Recorders (NVRs). NVRs are not suitable for analog cameras; they are designed to support IP (Internet Protocol) cameras. NVRs are basically equivalent to DVRs for IP-ready cameras, while CCTV video servers simply prepare the camera’s video IP and broadcast it over the Internet.