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Basic concepts and terms:
  • “Cloud service” is a service that can be used by the client connected to the Internet. The variety of such services is wide and depends on the activities of the company providing them. For example, you can store files not on your computer, but in the Internet, you may not install any software on your computer and work with its online analogues Chrome, Firefox, Opera or Internet Explorer. As a rule, all you need is to create your account. Then you just need to log in to your account and create a document or start a program to begin to work with them. Your documents and necessary programs are not tied to a specific computer – you can work with them from any computer.

  • IP video surveillance is video surveillance with the usage of special video cameras. IP video surveillance involves the use of digital cameras, which have a direct connection to the computer network. Also, the camera may be connected to the computer; in this case it is called a web camera.

    The advantages of using IP video surveillance:

    • the obtained digital image is not converted to analog, and that allows to significantly improve the image quality;
    • there is the possibility to create and use different functionality;
    • there is no need for additional cables to transmit the video image (video image can be transmitted both by wire and wirelessly).
  • The main components of the Service of IP Video Surveillance
General questions:
  • Power over Ethernet – Connection methods for cameras with PoE support and without PoE
  • The amount of the required disk space depends mostly on the following parameters:

    • camera resolution
    • frame rate
    • image quality (bitrate size)
    • recording length
    Resolution25 frames per second12 frames per second6 frames per second
    1080p (1920×1080)32-10 days23 days31 days
    UXGA (1600×1200)35-15 days27 days36 days
    720P (1280×720)47-16 days54 days63 days
    4CIF (704×576)63-47 days107 days151 days
    2CIF (704×288)126-94 days215 days303 days
    CIF (352×288)189-126 days303 days606 days
    QCIF (176×144)606-433 days1011 days1213 days
  • The channel bandwidth depends mostly on the following parameters of the IP camera:

    • camera resolution
    • frame rate
    • used video codecs
    • bitrate type
    • image quality (bitrate size)

     Resolution

     25 frames per second.

     12 frames per second.

    6 frames per second.

    1080p (1920×1080)

    5 Mb/s – 9 Mb/s

    4096 kb/s

    2096 kb/s

    UXGA (1600×1200)

    3 Mb/s – 7 Mb/s

    3072 kb/s

    1048 kb/s

    720P (1280×720)

    2.5 Mb/s – 6 Mb/s

    1792 kb/s

    936 kb/s

    4CIF (704×576)

    1536 kb/s – 2048 kb/s

    896 kb/s

    640 kb/s

    2CIF (704×288)

    768 kb/s – 1024 kb/s

    448 kb/s

    320 kb/s

    CIF (352×288)

    512 kb/s – 768 kb/s

    320 kb/s

    160 kb/s

    QCIF (176×144)

    160 kb/s – 224 kb/s

    96 kb/s

    80 kb/s

    The guide values of channel bandwith depending on the image resolution and frame rate can be determined using the table. This table contains information for the H.264 codec and high image quality.

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