Digital video is a representation of video in the form of encoded digital data and differs from analogue videos which represent moving visual images through analogue signals. Digital videos include a series of digital images which are represented in rapid succession.
The concept of ‘ digital video’ was firstly introduced in 1986 with the development of the Sony D1 format, which was able to record standard definition component video signals in a digital form.
Contrary to analogue videos, digital video can be copied without losing the quality of the images, as well as stored on different devices including computer data storage and Blu-ray disc. Furthermore, digital video can be uploaded online, allowing users to watch the content on their desktop computer or on a screen of a digital TV.
Digital video images are usually known as frames and are displayed in rapid succession at a constant rate which is measured in frames per second (FPS). Every frame is made of a raster of pixels which own a colour with a fixed number of bits.
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