A simple composite video signal comprises luminance information, color information (chrominance) and sync information in one transmission channel. When performing video image improvement operations and special effect generation on a composite video signal, a trade-off between color quality and picture resolution is unavoidable. To achieve maximum video quality, professional equipment therefore uses one of several component systems which split the signal into several channels: RGB splits the video signal into its red, green, blue, and sync components. The YUV system uses a different set of components: luminance + sync, and red/blue color difference. The Super-video (Y/C - Super-VHS and Hi-8) system, separates the luminance and chrominance components. Different types of equipment are required for each format and each component system has its own advantages and disadvantages. In a video studio, it is not uncommon to find a composite or Y/C video recorder, an RGB camera and a component YUV mixer. Special interface units are needed to bridge between the various formats of video.
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