YP B P R is the analog video signal carried by component video cable in consumer electronics. The green cable carries Y, the blue cable carries P B and the red cable carries P R.YPBPR is a color space used in video electronics, in particular in reference to component video cables.YP B P R is the analog version of the YCBCR color space; the two are numerically equivalent, but YP B P R is designed for use in analog systems whereas YC B C R is intended for digital video.P B P R is converted from the RGB video signal, which is split into three components: Y, P B, and P R. 1  Y carries luma (brightness or luminance) and synchronization (sync) information. 2  P B carries the difference between blue and luma (B − Y). 3  P R carries the difference between red and luma (R − Y).