Introduction - If you have any usage issues, please Google them yourself
YUV411, YUV420 data format common in DV, the former for the NTSC system, which is used for PAL system. YUV411 to extract the Y component of each pixel, and the UV component in the horizontal direction is sampled once every four pixels. YUV420 not 0 V component is sampled, but compared with the YUV411, in the horizontal direction to double the sampling frequency of color difference, in the vertical direction mode U/V component is reduced to half the sampling interval