YUV420 to BGR image from pixel pointers

Question

I am capturing raw output from a decoder which is YUV420. I have got three pointers: Y(1920*1080), U(960*540) and V(960*540) separately.

I want to save the image a

Answer 1

I think OpenCV matrix for your input yuv420 planar image should have 1 channel format instead of 3 channel. Place there Y channel, then U, then V. I found a very similar question HERE Planar YUV420 and NV12 is the same