video

video
    n 1: the visible part of a television transmission; "they could
         still receive the sound but the picture was gone" [syn:
         {video}, {picture}]
    2: a recording of both the visual and audible components
       (especially one containing a recording of a movie or
       television program) [syn: {video recording}, {video}]
    3: (computer science) the appearance of text and graphics on a
       video display
    4: broadcasting visual images of stationary or moving objects;
       "she is a star of screen and video"; "Television is a medium
       because it is neither rare nor well done" - Ernie Kovacs
       [syn: {television}, {telecasting}, {TV}, {video}]
    

video

   <graphics> Moving images stored as a sequence of {static
   images} (called "frames") representing snapshots of the scene,
   taken at regularly spaced time intervals, e.g 50 frames per
   second.  Apart from the frame rate, other important properties
   of a video are the {resolution} and {colour depth} of the
   individual images.

   Video data is typically stored and transmitted in a format
   that includes synchoronised {sound}.

   The many file formats in use for video differ chiefly in the
   type of {compression} used.  Compression is even more
   important for video that for static images due to the large
   amount of data involved in even a short video.  Furthermore,
   compression allows video to be transmitted via a channel whose
   bandwidth is less than the raw data rate implied by the
   resolution and frame rate.  This allows the recipient to start
   displaying the video before the transmission is complete, a
   process known as {streaming}.

   (2008-05-23)