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Hi. I've always thought RGB and component video (Like on DVD players) are the same, but someone told me that RGB (via SCART) and component video outs (3 seperate colours)are NOT the same thing? Is that true?
Follow Ups:
The color components of RGB are red, green, and blue. These correspond to the phosphor colors in a CRT. The components of Component Video are Y (luminance), Cb and Cr (chrominance) which correspond to the components of a TV signal.
In RGB the signal is split into seperate red/green/blue levels, with the sync signal integrated into the green channel.More advaned is RGB+S, which seperates out the sync signal on it's own channel. Still more advanced is RGB+HV, which seperates out horizontal and vertical sync, often used in very large format projectors, and is also what is in analog computer VGA cables.
Component video doesn't use RGB level information. It has a composite black-and-white signal, Y, and two differential signals; Yb which is the difference between black-and-white and the blue signal, and Yr, which is the difference between black-and-white and the red signal. Green is then computed from the three signals.
The MPEG2 stream in DVD's is encoded in this Y/Yb/Yr colorspace. When you output component video from your DVD player, you are getting the exact output of the MPEG2 decoding process.
/*Music is subjective. Sound is not.*/
RGB <> Component.They are not the same.
Sam
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