Personal articles and blog entry about video's and the internet
This article is all about video, what it is and where it came from. What it is? Video is an electronic medium for the recording, copying and broadcasting of moving visual images. It 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 tape. There have been characteristics of video first is number of frames per second also called “frame rates” this is the number of still pictures per unit of time of video, the second characteristic is it can be interlaced or progressive.
Interlacing was invented as a way to reduce flicker in early mechanical and CRT displays without increasing the number of complete frames per second, which would have required sacrificing image detail in order to remain within the limitations of a narrow bandwidth, and lastly the aspect ratio as describes the dimensions of video screens and video picture elements.
All popular video formats are rectilinear, and so can be described by a ratio between width and height. Video can be transmitted or transported in a variety of ways. Wireless broadcast as an analog or digital signal. Coaxial cable in a closed circuit system can be sent as analog interlaced 1 volt peak to peak with a maximum horizontal line resolution up to 480. It also can be interlaced or progressive. Interlacing was invented as a way to reduce flicker in early mechanical and CRT video displays without increasing the number of complete frames per second, which would have required sacrificing image detail in order to remain within the limitations of a narrow bandwidth.
Nowadays video have advantage and disadvantage in using depends on the user, there have been more advantage one of the advantage to us is to capture important happenings and special occasions that we do in our life like christenings, birthdays, etc. The disadvantages are fewer like, parents didn’t guide their child to this videos are what for, accidentally children watching videos containing pornographic acts.
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