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IMC2 yuv pixel format


IMC2 layoutSimilar to YV12, this format comprises an NxN Y plane followed by "rectangularly adjacent" (N/2)x(N/2) U and V planes. Lines of U and V pixels are interleaved at half stride boundaries below the Y plane.

  Horizontal Vertical
Y Sample Period 1 1
V (Cr) Sample Period 2 2
U (Cb) Sample Period 2 2

Microsoft defines this format as follows:

 "The same as IMC1, except that Cb and Cr lines are interleaved at half-stride boundaries. In other words, each full-stride line in the chrominance area starts with a line of Cr, followed by a line of Cb that starts at the next half-stride boundary. (This is a more address-space-efficient format than IMC1, cutting the chrominance address space in half, and thus cutting the total address space by 25%.) This runs a close second in preference relative to NV12, but NV12 appears to be more popular."

Based on: IMC1

Duplicate formats: IMC4

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