Browse Definitions :
Definition

digital video

Digital video is audio/visual in a binary format. Information is presented as a sequence of digital data, rather than in a continuous signal as analog information is.

Information in the natural world, received through the five senses, is analog. That means that it is infinitely variable. Digital A/V information, on the other hand, consists of discrete units of data that are placed so close together that the human senses perceive them as a continuous flow. Analog data, such as video recorded on tape, is transmitted as electronic signals of varying frequency or amplitude that are added to carrier waves of a given frequency. To make that information usable on a computer or a modern media player, analog-to-digital conversion translates an analog signal to a series of zeroes and ones, which represent, respectively, "negative" and "positive," "off" and "on," or "low" and "high." The opposite action, digital-to-analog conversion, recreates the analog signal for playback.

Digital video offers a number of advantages over analog video, including:

  • Ease of sharing and storage.
  • No degredation of data quality when copied.
  • Easy and inexpensive copying.
  • The capacity for multicasting.

Digital video technology can also incorporate analytical software for intelligent video, which enables capabilities such as video search, object tracking and intrusion detection.

Learn More About IT:
> Wikipedia has more background and information in its entry for digital video.
> HowStuffWorks explains digital data.
> Bruce Walls presents a simple explanation of digital video

This was last updated in April 2005
SearchNetworking
  • network packet

    A network packet is a basic unit of data that's grouped together and transferred over a computer network, typically a ...

  • virtual network functions (VNFs)

    Virtual network functions (VNFs) are virtualized tasks formerly carried out by proprietary, dedicated hardware.

  • network functions virtualization (NFV)

    Network functions virtualization (NFV) is a network architecture model designed to virtualize network services that have ...

SearchSecurity
SearchCIO
  • data privacy (information privacy)

    Data privacy, also called information privacy, is an aspect of data protection that addresses the proper storage, access, ...

  • leadership skills

    Leadership skills are the strengths and abilities individuals demonstrate that help to oversee processes, guide initiatives and ...

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

SearchHRSoftware
SearchCustomerExperience
  • data clean room

    A data clean room is a technology service that helps content platforms keep first person user data private when interacting with ...

  • recommerce

    Recommerce is the selling of previously owned items through online marketplaces to buyers who reuse, recycle or resell them.

  • implementation

    Implementation is the execution or practice of a plan, a method or any design, idea, model, specification, standard or policy for...

Close