Security Cameras Features - VIDEO COMPRESSION

Security Camera Video Compression Technology - Miami, Florida

Video compression is an important tool to help prevent network traffic from becoming saturated.

Security Camera VIDEO COMPRESSION

maintain the quality of moving images & reduce bandwidth

Security camera video compression is performed through a video codec that works on one or more compression algorithms. The process of the security camera video compression involves applying an algorithm to the source video to create a compressed file that is ready for transmission or storage. To play the compressed file, an inverse algorithm is applied to produce a video that shows virtually the same content as the original source video. The time it takes to compress, send, decompress and display a file is called latency. The more advanced the compression algorithm, the higher the latency.

Once a security camera video is compressed, its original format is changed into a different format (depending on the codec used). A pair of algorithms that works together is called a video codec (encoder/decoder). Video codecs of different standards are normally not compatible with each other; that is, video content that is compressed using one standard cannot be decompressed with a different standard. The video player must support that video format or be integrated with the compressing codec to play the video file.

security camera video compression - How does it Work?

When your security camera system has bandwidth and storage limitations, a security camera video compression is a valuable tool because the compressed video files will take up less space, allowing you to store more videos or keep the files for longer periods of time. However, if your video is compressed too much the image quality can be compromised. For this reason, it is very important to choose the right security camera video compression technology, in order to have the best balance possible between the video compression and the image quality.


security camera video compression - What is a codec?

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There are two types of codecs – lossy and lossless. In lossless security camera video compression no pixels are changed, so the image looks exactly the same after decompression as before it. With lossless security camera video compression, every single bit of data that was originally in the file remains after the file is uncompressed. Though lossless security camera video compression is adequate for video compression, its major disadvantage is that it doesn’t reduce the data by very much. Most video compression is based on the lossy security camera video compression format, which compresses data in such a way that it loses some of the original data but achieves much smaller file sizes while still retrieving a pretty clear image.


h.264 vs h.265 :
Choosing the Right security camera video compression

Different security camera video compression standards reduce data by different means, and hence, results differ in bit rate, quality and latency. Video compression is an important tool to help prevent network traffic from becoming saturated. What are the most popular security camera video compression standard or compression schemes? There are three major security camera video compression worldwide standards:

Security Camera Video Compression Standars - Miami, Florida

H.264 is another name given to MPEG-4 Part 10, also known as AVC (Advanced Video Coding). H.264 security camera video compression is the newest and most efficient security camera video compression codec and it works by taking small groups of frames and evaluating them together as a series to eliminate duplicate content that appears in each frame without changing. H.264 offers higher compression rates and requires much less storage space than MPEG-4 and M-JPEG.

M-JPEG is the compilation of separately compressed JPEGs in a sequence thus creating a video. It focuses on the quality of the image, rather than the quantity, i.e. less frames per second and priority is given to image resolution. This security camera video compression is appropriate for megapixel and many other security cameras are supported. Some advantages of M-JPEG include better decompression on the computer, better live viewing and great image quality (consistently). M-JPEG is also unlicensed, making it free for the user and viewer. Another aspect that makes M-JPEG good is its robustness, if one frame is dropped, then it does not affect the video.

MPEG-4 uses techniques similar to M-JPEG, as far as putting pictures in a sequence. It essentially compares two compressed images, saves the picture, and it saves only the difference from each additional sequential image, such as movement, thus saving time, memory space and processing power. A higher compression rate is amongst the advantages of MPEG-4. It can sync audio and video and is great for real-time viewing. MPEG-4 was designed to support low-bandwidth applications.

Security camera video compression : Conclusion

Security camera video compression technologies such as Motion JPEG, MPEG-4 and H.264 allow users to transmit and record high-quality security videos without consuming as much bandwidth. Even though the security camera video compression industry is fairy mature, one can still expect to see even better Security camera video compression techniques and standards, such as the new H.265 standard, that will bring us better images transmission at even lower bandwidth consumption rates. Would like to learn more about H.264 vs H.265? Contact Dicsan Technology to learn more about how you can benefit from security camera video compression. Contact us

Other Features

Analog CCTV Security Cameras

Analog CCTV Security Cameras
encode captured images into analog resolution as D1 or 960H.

Security Cameras:
Analog

Analog Security Cameras capture an analog video signal and transfers it over coax cable to a DVR (Digital Video Recorder). The DVR will convert the analog signal to digital, then compress it and store it on a hard drive for later retrival.

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High Definition-Transport Video Interface

High Definition - Transport Video Interface
is a signal processing and transport technology used in HD Security Cameras and DVRs.

Security Cameras:
HD-TVI

HD-TVI Security Cameras currently support video resolution as high as 1080p by using the same coaxing cabling as Analog Cameras use which, makes it easier for people with old Analog CCTV Systems to upgrade to an HD system.

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IP Security Cameras

Internet Protocol Security Cameras, unlike CCTV Analog Security Camera,
send and receives data via a computer network and the Internet.

Security Cameras:
IP

IP Cameras are able to deliver higher resolution and offer digital zoom and on board digital processing. A higher number of pixels will provide a better digital zoom so you'll see further into the distance without degrading the image.

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Megapixel Security Cameras

Megapixel Security Cameras give you HD resolution so you'll be able to record more clear footage. This allows to use fewer cameras and save on maintenance costs.

Security Cameras:
Megapixels

Megapixel Security Cameras deliver the best image quality available, capturing a super high-resolution image and allowing you to digitally zoom in on specific details with great clarity when reviewing recorded Surveillance videos.

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Night Vision Security Camera

Night Vision Security Camera produce clear and detailed full color video in dark conditions.

Security Cameras:
Color Night Vision

Color Night Vision Security Cameras contain powerful image sensors that are more sensitive to light allowing the sensor to absorb more visible light so the cameras will continue to provide full color video images in low-light conditions.

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Thermal Security Camera

Thermal energy travels faster than visible light so a Thermal Security Camera will be able to detect moving heat objects from greater distances than a traditional Security Camera.

Security Cameras:
Thermal

Thermal Seurity Cameras sense thermal energy instead of using visual light to construct images. Since it doesn't see light, it will see at night as well as it does during the day. It sees through obstructions and its not affected by smoke, dust or fog.

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Security Cameras: Wide Dynamic Range

A Wide Dynamic Range Security Camera is capable of switching from color to black and white like a Day/Night Security Camera does.

Security Cameras:
Wide Dynamic Range

Wide Dynamic Range Security Cameras help to figh natural and artificial lighting. These cameras have a special software which allows them to balance too bright or too dark rooms creating a balanced and high resolution video shot.

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Wireless Security Cameras

Wireless Security Cameras offer the same standard features as a wired security camera, including HD quality recording, infrared night vision, and motion detection sensors.

Security Cameras:
Wireless

Wireless Security Cameras allow you to place them up to 1.5 miles away from your local area network. They use top-of-the-line technology to ensure a secure and reliable connection and offer the same standard features as a wired camera.

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Cost of Security Cameras

Although it may seem like a big expense to acquire security systems, at the end it is an investment to protect your most valuable assets.

Security Cameras:
Cost

Having a security system as necessary as paying for services.The price depends on the features and form factors of the equipment, as well as the amount of devices installed, the distance, whether, and if its a wired or wireless system.

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Audio Security Cameras

Adding audio surveillance capability to your CCTV can help make a business safer.

Security Cameras:
Audio

Audio Security Cameras have built-in microphones that allow easy audio recording. Hidden audio security cameras are illegal, so you must get the consent of at least one person in the conversation or hang sign where they are installed.

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Security Cameras Field of View

Hanging a "CCTV recording on premises" sign does not give you consent to record audio. You must specifically state that audio is being recorded.

Security Cameras:
Field Of View

A Network Security Camera can be described as a camera and a computer combined in one unit. Their significantly high video resolution will allow you to capture more area per camera and zoom-in to enhance minor details.

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Security Cameras Image Sensor

Each pixel of an image sensor records the amount of light to which it is exposed and converts it into a corresponding number of electrons.

Security Cameras:
Image Sensor

Image sensor is the element of an electronic camera, which detects and captures the information that makes up the image. This was achieved by converting the attenuation of light waves into electrical signals.

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Power over Ethernet Cameras

Power over Ethernet minimizes the number of wires that must be strung in order to install the network which lowers cost and installation time.

Security Cameras:
PoE

Power over Ethernet (PoE) works by using a single network cable to provide both data connection and electric power over to an IP Security Cameras. This will result in lower cost, less downtime, easier installation and maintenance.

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PTZ Cameras

PTZ cameras are mainly used for surveillance. They are more common for business, military and law enforcement agencies to monitor products or public areas.

Security Cameras:
PTZ

PTZ stands for Pan, Tilt and Zoom. This refers to the capabilities of automated cameras and video recorders. Has the ability to rotate, usually in a full circle, to tilt at different angles up and down, and to zoom in on particular objects.

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Video Compression

Video compression is an important tool to help prevent network traffic from becoming saturated.

Security Cameras:
Video Compression

Video compression techniques consist of reducing and eliminating redundant video data so that the digital video file can be sent through the network and stored. Different compression standards use different methods to reduce data.

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Frame Rate

The frame rate is a parameter that can be set either in the IP security camera, in a video server or in the video surveillance management software.

Security Cameras:
Frame Rate

Frame rate, fps or frames per second, is the number of frames (images) your camera can take per second. The continuous succession of these frames produces the idea of ​​movement because of the minimum differences between them.

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4K-HD

The use of 4K cameras in your system ensures that all the images taken are clear and very detailed.

Security Cameras:
4K

4K security camera is a digital camera with a horizontal resolution of around 4,000 pixels and a vertical resolution of about 2,200 pixels. It is twice as high as the resolution of an existing standard high definition (HD) security camera.

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