Resolution: This is a crucial factor when selecting a camera. For a sharp image, it is recommended to choose an IP camera that can record at 720p high definition.
High-definition (HD) video quality
For the clearest images, it's ideal to opt for a camera with a resolution of 1080p or higher. If you plan to record footage from the camera using a digital video recorder (DVR), make sure it is also HD compatible. IP cameras typically offer a much higher resolution, usually capturing footage ranging from 1 to 5 megapixels, which results in a much clearer image compared to the grainy footage captured by analog cameras, which usually have a resolution of around half a megapixel. IP cameras also usually have a wider field of view.
Effective night vision is a crucial aspect to consider for outdoor security cameras. Infrared (IR) technology, which uses bright light through wavelengths, provides the best and brightest nighttime view. The number of IR LEDs in a camera affects how far the camera can clearly capture activity outside your home, so look for a camera with at least 100 feet or better of night vision. Many models also have an IR cut-switch that automatically turns on and off the IR technology based on lighting conditions.
Frame rate: The frame rate is also important, as it determines the smoothness of the video. The higher the frame rate, the smoother the video will be. A low frame rate leads to choppy footage. Consider the frame rate of the camera before purchasing, with real-time being usually measured as 30 frames per second.
Models: There are various types of security cameras available, including bullet cameras, dome cameras, and pan-tilt-zoom (PTZ) cameras. Consider your security needs when choosing the type of camera to use in your system.
Pan, tilt and zoom function
Cameras with remote-controlled pan, tilt, and zoom capabilities are ideal for coverage of larger areas and offer the best viewing angle without physically moving the camera.
Indoor/outdoor: Some security cameras are designed for indoor use only, while others are weatherproof for outdoor use. If you plan to use cameras outside, make sure to purchase weatherproof models to prevent water or dirt from interfering with the video quality or damaging the camera.
Audio: The availability of audio recording on a camera varies based on the camera model and manufacturer. Some cameras don't have audio recording capabilities, while others have it and may even support two-way audio communication, allowing someone watching the camera feed to interact with someone in its field of view.
Two-way audio enables you to communicate with anyone who visits your home, whether they are welcome or not. This feature is commonly found in video doorbells, but many indoor cameras also have it. If an unwelcome visitor shows up, you can use two-way audio as a deterrent.
Adding a webcam to a room can help you keep an eye on your children or elderly relatives. It allows you to stay connected to the things that matter most to you, even when you can't be there in person. With a home security camera, you can make sure to capture every special moment.
Storage: When choosing a video recorder, one of the key considerations is storage capacity. This depends on several factors such as the number of cameras in your system, camera resolution, desired length of footage retention, and the amount of footage you want to store. If your system has multiple high-resolution cameras, you can expect the footage to quickly consume a large amount of storage space. Some video recorders allow you to overwrite the oldest footage when the capacity is reached, but this may overwrite important archived footage if you're not careful. To determine the necessary storage capacity, there are online tools that can help you calculate based on your system's specifications.
Compression: Compression is used to remove unnecessary data from the footage transmitted to your video recorder, saving storage space. The most commonly used compression techniques for high-definition video are MJPEG, H.264, and MPEG4, with varying quality levels. The choice of compression method depends on your needs and hardware, and the process can be complex.
For example, a four-camera system that operates 24/7 with 2-megapixel IP cameras and 5 fps frame rate, using MJPEG compression, would require 2.79 terabytes of storage on an NVR.
Therefore, it's crucial to plan appropriately and have a clear understanding of your storage needs. Additionally, it's recommended to keep a bit of extra storage capacity for any significant footage you might need to refer to later.
H.264 (also known as AVC or MPEG-4 Part 10) is a video compression standard that is widely used for the recording, compression, and distribution of video content. It is known for its high compression efficiency, meaning that it can provide high-quality video while reducing the size of the data required to represent that video. This makes it ideal for applications such as online video streaming, digital television broadcasting, and video recording devices.
H.264 uses a combination of inter-frame compression (compressing the difference between frames) and intra-frame compression (compressing the data within a frame) to achieve its high compression ratio. Additionally, it provides a range of advanced features such as support for multiple reference frames, flexible macroblock ordering, and efficient motion compensation. These features enable H.264 to provide high-quality video at lower bitrates than earlier video compression standards.
HEVC (also known as H.265 and MPEG-H Part 2) is a video compression standard that is designed to provide higher compression efficiency compared to previous standards such as H.264/AVC. It uses a combination of inter-frame compression (compressing the difference between frames) and intra-frame compression (compressing the data within a frame) to achieve its high compression ratio.
HEVC provides several new and improved features compared to H.264, including more advanced entropy coding, improved motion compensation, and support for more efficient parallel processing. This results in a higher compression efficiency, allowing HEVC to provide high-quality video at lower bitrates than H.264.
HEVC is widely used in applications such as online video streaming, digital television broadcasting, and video recording devices, where high compression efficiency is desired. It is also becoming increasingly popular for use in video content distribution, where large video files need to be efficiently compressed for storage and transmission.
It's important to consider the type of storage a security camera provides. Look for cloud storage options that save recordings online. Find out if there is a limit on cloud storage or if it is unlimited and for how long your recordings will be stored online. However, it's crucial to take steps to prevent uploading large video files from impacting network bandwidth. This can be done by scheduling uploads during low-traffic times or by reducing the size of the video files before uploading. Keep in mind that many cloud services charge a recurring fee, particularly for long-term video storage. It's essential to check the security measures of the company to ensure the safety of your data. The benefit of cloud storage is that even if your physical device is damaged, lost, or interfered with, your video archives will still be accessible.
Activity notifications inform you of significant activity detected near the camera. Look for a camera that can provide notifications via push notifications, text messages, or email, keeping you updated in real-time.
Finally, with a security camera, you can check in on your pets while you're away and uncover the mystery of any "unexplainable" couch holes or missing cookies from the table.
Custom activity zones
Some security cameras allow you to set up custom activity zones, meaning that you choose the areas that are most significant for capturing movement. One of the biggest benefits of this feature is it prevents you from being notified of insignificant activity, like a car driving by or an insect flying by your camera.
Camera Compatibility: Not every video recorder works with every camera. DVRs are compatible with analog cameras, while NVRs work with IP cameras. However, compatibility extends beyond this distinction. Some NVR systems only work with IP cameras from specific manufacturers, not all. When purchasing a video recorder, you must ensure that it works with the cameras you've purchased. If you're working with a surveillance system integrator, they should be able to provide you with this information.
Outdoor or Indoor Security Cameras
The type of security camera you choose will depend on the area you want to protect. For monitoring the exterior of your home, car, or pets, an outdoor camera is a better option as it offers HD video and weatherproofing. Some outdoor cameras also come with deterrence features like automated lights and sirens to ward off unwanted visitors.
You can also use security cameras to promote your business by embedding IP camera footage on your website. You have the option to make your broadcast public or private with password protection. By placing cameras in multiple locations, you can watch all webcams at once and eliminate the need for a physical presence. The link to the camera will be automatically generated, allowing you to share it with the world immediately.
If you want to monitor a room inside your home, an indoor camera is a better choice as it provides HD video, two-way communication, and night vision. With two-way communication, you can use the indoor camera to monitor for suspicious activity and check-in on loved ones.
Number of cameras and their placement
The amount of cameras required will vary depending on the size of the monitored area. For example, in a small apartment, a single camera installed in the entranceway can provide adequate security as it can capture both the entrance and exit of individuals, along with any sounds in the vicinity. However, for larger properties like a country house or cottage with a sprawling grounds, a greater number of cameras - potentially up to several dozen - might be necessary. These cameras can differ in terms of recording quality and purpose. It's best to consult with specialists for a precise determination of the necessary camera count, as it's not possible to accurately assess the requirement without conducting a thorough examination of the property.
There is no one-size-fits-all approach to camera placement as the ideal arrangement will depend on various factors unique to each property. Additionally, it's important to consider the location of the main equipment such as the recorder, as it should not interfere with daily activities. The cameras are connected to the recorder via cables, and in cases where multiple cameras are used, the cable bundle can become quite substantial. In such instances, it may be advisable to allocate a dedicated room for the DVR, such as a pantry or utility room in a private home or a warehouse in an office.
It's important to note that not all hard drives are suitable for use in a video surveillance system. While a simple computer drive can be connected, it may not function for an extended period and there is a risk of failure in the first few months. This is because these drives are not designed for continuous recording, and as such, special hard drives specifically created for use in recorders are recommended. Although these drives may cost a bit more, they are reliable and will perform smoothly for years.
Share your cameras
You can access all your webcams using your smartphone or computer anywhere there is an internet connection. Whether you're on vacation or at your home office, you always know what's happening, no matter where your cameras are located. You can also share your cameras with your friends, family, and coworkers.
Many modern outdoor security cameras offer live streaming capabilities directly to your mobile device. This can be a valuable feature if you want to check in while away. Make sure to choose a camera that is compatible with your device. Note that remote access, mobile alerts, or cloud-based features may require a monthly or yearly fee from your home security monitoring provider.
IP Cameras vs. Analog Cameras
There are two main camera options that can be integrated into a video surveillance system: IP cameras and analog cameras. IP cameras are the more advanced version of analog cameras and although the individual cameras may be pricier, they come with a range of features that analog cameras lack. Let's compare the two types of cameras.
Network Video Recorders
IP cameras are compatible with Network Video Recorders (NVRs), which offer several benefits over Digital Video Recorders (DVRs). NVRs record higher-quality video and allow for more flexible scalability compared to DVRs. For more information on video recorders.
Digital Video Recorders vs. Network Video Recorders
The cameras in a video surveillance system need a central video recorder for transmitting and storing their captured footage. DVRs, short for Digital Video Recorders, have replaced the older VCR models, while NVRs, or Network Video Recorders, are the latest development in video recording technology. Let's take a closer look at the differences between DVRs and NVRs. DVRs typically provide the standard video quality used in CCTV systems, while NVRs can offer high-definition recording at 1080p resolution, which is 1920 x 1080. This leads to a clearer image.
Hybrid Video Recorders
Hybrid Video Recorders (HVRs) are video surveillance systems that support both IP and analog cameras.
DVRs connect analog cameras via BNC cables, but adding more cameras requires additional cables. This makes scaling up a DVR system challenging, as you need to purchase a new DVR once all the BNC connections are occupied. Additionally, the connected cameras must be close to the recorder to maintain good video quality.
NVRs, on the other hand, connect directly to a network, making it easy to scale up the system. IP cameras that are connected to the same network via a PoE switch can transmit footage to the NVR. The system can accommodate new cameras once they are added to the network, and there are no proximity restrictions as long as the cameras are on the same network as the NVR. However, it is important to check if the IP cameras are compatible with a specific NVR before purchasing.
Power over Ethernet Switches
IP cameras can be connected to a Power over Ethernet (PoE) switch, which not only transmits data from the camera but also provides power to it. Analog cameras, on the other hand, require a separate power source in addition to a switch to run the signal from the camera, leading to a more complicated setup with additional wires. PoE switches are also considered a more secure method of data transmission.
IP cameras also have added features such as video analytics, which allow for automatic recording and mobile notifications when movement is detected within the camera's field of view. This is particularly useful for monitoring your business when it's closed and being alerted if someone is inside the premises. The system can be set to flag such events and send notifications and recorded footage directly to your smartphone. Some systems also have a direct connection to local law enforcement.
Although IP cameras are generally more expensive than analog cameras, the total cost of a full IP system is often lower than a comparable analog system due to the wider field of view offered by IP cameras, which often requires fewer cameras