IP-Based Video Surveillance Systems Quiz

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Questions and Answers

What type of digital video camera receives control data and sends image data via the LAN/WAN/Internet?

Analog camera

Dome camera

PTZ camera

IP camera (correct)

Which video compression standard is also known as MPEG-4 Part 10 or Advanced Video Coding (MPEG-4 AVC)?

MPEG-2

H.264 (correct)

Motion JPEG

MPEG-1

What type of cabling transports digital video across the IP network, allowing integration to any PC or server in the network?

Fiber optic cabling

STP cabling

Coaxial cabling

UTP cabling (correct)

What type of software can integrate with other security systems such as Automated License Plate Recognition (ALPR) and Facial Recognition systems?

Video Management Software (VMS) Signup and view all the answers

What does IP-based video surveillance system connect directly to the Local Area Network (LAN) using?

UTP cabling Signup and view all the answers

Which format encodes video feeds into Motion JPEG or MPEG-4/H.264 formats and stores them as digital images on a computer disk array?

H.264 Signup and view all the answers

What is the type of video camera that is structured with dedicated spaces for video surveillance and receives control data and sends image data via the LAN/WAN/Internet?

IP camera Signup and view all the answers

What type of transmission method allows for the installation of an IP-based video surveillance system connecting the cameras directly to the Local Area Network (LAN)?

UTP transmission Signup and view all the answers

What does H.264 Protocol refer to?

A video compression standard Signup and view all the answers

What are IP cameras capable of providing in addition to compressing and storing video?

Facial recognition Signup and view all the answers

What does a codec refer to?

The fundamental compression engine used within an encoder, decoder, or combination unit Signup and view all the answers

How much can video compression algorithms such as H.264/AVC or H.265/HEVC reduce the raw content data by?

As much as 1,000 times Signup and view all the answers

What does baseband video refer to?

A video signal that contains all the necessary information to reproduce a picture, without modulating radio-frequency channel carriers Signup and view all the answers

What is the purpose of a network video recorder (NVR)?

To record video footage and store it on a hard disk, mass storage device, or cloud storage Signup and view all the answers

What advantage do analog cameras offer in terms of bandwidth requirements?

Analog recorded video files tend to be smaller, and they are transmitted to the DVR over coax instead of LAN, so transmitting them doesn’t take as much bandwidth and doesn’t overload the network. Signup and view all the answers

What is the function of an encoder in video technology?

To convert video into a compressed format for storage or transmission Signup and view all the answers

What is the main advantage of using analog cameras?

Low cost, simplicity, and lower bandwidth requirements Signup and view all the answers

What type of signal does analog video use?

Baseband video Signup and view all the answers

What is the purpose of a digital video recorder (DVR) in the context of analog video?

To convert the video from analog to digital signals, compress the file, and store it on a hard drive Signup and view all the answers

What does a network video recorder (NVR) need to be paired with to create a video surveillance system?

Digital internet protocol (IP) cameras Signup and view all the answers

Study Notes

IP Video Surveillance Cameras

IP cameras are designed for sending image data and receiving control data via LAN, WAN, or the internet.
IP cameras connect directly to the Local Area Network (LAN) using a twisted-pair cable.

H.264 Video Compression

H.264, also known as MPEG-4 Part 10 or Advanced Video Coding (MPEG-4 AVC), is a video compression standard.

Video Surveillance Software

Video surveillance software can integrate with other security systems, including Automated License Plate Recognition (ALPR) and Facial Recognition.
This software allows storing, managing, and analyzing captured video data and integrating with other security systems.

Video Recording and Storage

IP-based video systems store video feeds in Motion JPEG or MPEG-4/H.264 formats on digital image files, stored on a computer disk array.
Network Video Recorders (NVRs) are used for recording and storing video, with the capacity to handle multiple cameras simultaneously, and supporting features like motion detection and recording schedules.

Network Video Transmission

IP-based video surveillance systems employ a transmission method that allows cameras to connect directly to the LAN.
H.264 Protocol refers to the encoding and compression standard used in many IP video systems, known for its efficiency and performance.

Advantages of IP Cameras

IP cameras have capabilities beyond video compression and storage, such as:
- Two-way audio: enabling communication through the camera.
- Motion detection: triggering recording or alerts based on movement.
- Remote access: allowing users to view footage from any location.
- Pan/tilt/zoom control: adjusting the camera's position and focus remotely.

Video Data Compression

Codecs are algorithms designed to compress and decompress video data, reducing file sizes without sacrificing quality.
H.264/AVC and H.265/HEVC video compression algorithms can reduce raw content data by up to 90%.

Baseband and Analog Video

Baseband video refers to the uncompressed video signal before any encoding or compression.
Analog cameras transmit video in a continuous analog signal, offering lower bandwidth requirements.

Encoding and Recording

An encoder converts baseband video to digital format, ready for transmission and storage.
Digital Video Recorders (DVRs) in the context of analog video, record and store video from analog cameras.

Analog vs. Digital Video Surveillance

Analog cameras offer an advantage in terms of bandwidth requirements, as they use a less complex transmission method.
However, digital cameras offer higher resolution, enhanced features, and greater flexibility in terms of remote access and networked capabilities.

Analog Video Transmission

Analog video uses an analog signal, which is a continuous wave that changes in amplitude to represent the video signal.
Analog cameras require coaxial cables for transmission, limiting their flexibility and scalability compared to IP cameras.

Key Terms and Concepts

IP Video Surveillance: A system that uses IP cameras and a network for video recording, monitoring, and remote access.
H.264/AVC: A video compression standard commonly used for IP video surveillance.
Codec: An algorithm for compressing and decompressing video data.
Baseband Video: The uncompressed video signal before encoding.
NVR: A Network Video Recorder, a device used to record and store video from IP cameras.
DVR: A Digital Video Recorder, a device used to record and store video from analog cameras.
Analog Video: Video that uses a continuous analog signal for transmission.
Encoder: A device that converts baseband video into a digital format for transmission.

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Description

Test your knowledge of IP-based video surveillance systems with this quiz. Explore topics such as video encoding formats, storage methods, and access capabilities through the IP network. Ideal for security professionals and IT personnel.