Y
The luma or luminance component of video: brightness independent of color.
Y/C
A video signal in which the brightness (luma, Y) and color (chroma, C) signals are separated. Also called S-video.
YCbCr
A component digital video signal containing one luma and two chroma components. The chroma components are usually adjusted for digital transmission according to ITU-R BT.601. DVD-Video's MPEG-2 encoding is based on 4:2:0 YCbCr signals. YCbCr applies only to digital video, but is often incorrectly used in reference to the YPbPr analog component outputs of DVD players.
Yellow Book
The document produced in 1985 by Sony and Philips that extended the Red Book compact disc format to include digital data for use by a computer. Commonly called CD-ROM.
YPbPr
A component analog video signal containing one luma and two chroma components. Often referred to loosely as YUV or Y, B-Y, R-Y.
YUV
In the general sense, any form of color-difference video signal containing one luma and two chroma components. Technically, YUV is applicable only to the process of encoding component video into composite video. See YCbCr and YPbPr.
