video





video


 

Video

 

 

 

 



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Video


 

 



Video


 

 



Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing

a sequence of still images representing scenes in motion.

 

Video technology was first developed for cathode ray tube (CRT) television systems, but several new technologies for

video display devices have since been invented. Charles Ginsburg led an Ampex research team developing the first

practical video tape recorder (VTR). In 1951 the first video tape recorder captured live images from television

cameras by converting the camera’s electrical impulses and saving the information onto magnetic video tape.



There are different layers of video transmission and storage, each with its own set of formats to choose from.

For transmission, there is a physical connector and signal protocol (“video connection standard” below). A given

physical link can carry certain “display standards” which specify a particular refresh rate, display resolution, and

color space.

Many analog and digital recording formats are in use, and digital video clips can also be stored on a computer file

system as files which have their own formats. In addition to the physical format used by the data storage device or

transmission medium, the stream of ones and zeros that is sent must be in a particular digital “video encoding”, of

which a number are available.



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