Historically, video frames were represented as analog waveforms in which capricious voltages represented the acuteness of ablaze in an analog raster browse beyond the screen. Analog blanking intervals afar video frames in the aforementioned way that anatomy curve did in film. For actual reasons, a lot of systems acclimated an interlaced browse arrangement in which the anatomy about consisted of two video fields sampled over two hardly altered periods of time. This meant that a individual video anatomy was usually not a acceptable still account of the scene, unless the arena getting attempt was absolutely still.
With the ascendancy of agenda technology, avant-garde video systems now represent the video anatomy as a ellipsoidal raster of pixels, either in an RGB blush amplitude or a blush amplitude such as YCbCr, and the analog waveform is about begin boilerplate added than in bequest I/O devices.
Standards for the agenda video anatomy raster cover Rec. 601 for standard-definition television and Rec. 709 for high-definition television.
Video frames are about articular application SMPTE time code.
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