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YPbPr is the analog version of YCbCr used in digital. It is the native data format that all displays and cameras use.
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The same goes the other way around so long as 480i or 576i is used.RGB describes the image in percentage of primary colors red, green, blue - the 100% levels of those colors are defined by various standards that are slightly different. Since YPbPr is backwards compatible with the luminance portion of composite video even with just component video decoding one can still use composite video via this input, but only luma information will be displayed, along with the chroma dots. Also, many TVs use the green connection either for luma only or for composite video input. This means that the yellow, red, and white RCA connector cables commonly packaged with most audio/visual equipment can be used in place of the YPbPr connectors, provided the end user is careful to connect each cable to corresponding components at both ends. The same cables can be used for YPbPr and composite video. Thus, the Y P B P R nomenclature derives from engineering metrics developed for the NTSC color standard. P for phase information or phase shift has carried through to represent color information even in the case where there is no longer a phase shift used to represent hue. When color signals were first added to the NTSC-encoded black and white video standard, the hue was represented by a phase shift of a color reference sub-carrier. To send a green signal as a fourth component is redundant, as it can be derived using the blue, red and luma information. There are other standards of YPbPr components derivation available: 1920x1035 uses SMPTE 240M (240M defined EOTF and uses SMPTE 170M primaries and white point) and 525 lines 60/1.001 Hz (SMPTE 273M) and 625 lines 50 Hz ( ITU-R BT.1358) BT.601 matrix is used. P R carries the difference between red and luma ( R − Y).P B carries the difference between blue and luma ( B − Y).With color, Y still represents intensity but it is a composite of the component colors. Before the advent of color television, the Y axis on an oscilloscope display of a video waveform represented the intensity of the scan line. It uses BT.709-2 matrix coefficients and digital YCbCr. Y carries luma (brightness or luminance) and synchronization (sync) information.
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YPbPr is converted from the RGB video signal, which is split into three components: Y, P B, and P R. Some video cards come with video-in video-out (VIVO) ports for connecting to component video devices.įurther information: YCbCr § Technical details YPbPr is commonly referred to as component video by manufacturers however, there are many types of component video, most of which are some form of RGB. Sync is carried on the Y channel and is a bi-level sync signal, however, in HD formats a tri-level sync is used and is typically carried on all channels. The EOTF (gamma correction) may be different from common sRGB EOTF and BT.1886 EOTF.
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YPbPr is gamma corrected YCbCr color space (it is not analog YUV that was used for analog TV, though component video is an analog interface) the two are numerically equivalent but YPbPr is designed for use in analog systems while YCbCr is intended for digital video. YPbPr or Y'PbPr, also written as YP BP R, is a color space used in video electronics, in particular in reference to component video cables. The green cable carries Y, the blue cable carries P B and the red cable carries P R. YPbPr is the analog video signal carried by component video cable in consumer electronics.