.. -*- coding: utf-8; mode: rst -*- .. _V4L2-PIX-FMT-YUV411P: ***************************** V4L2_PIX_FMT_YUV411P ('411P') ***************************** Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1. Planar layout as opposed to ``V4L2_PIX_FMT_Y41P`` Description =========== This format is not commonly used. This is a planar format similar to the 4:2:2 planar format except with half as many chroma. The three components are separated into three sub-images or planes. The Y plane is first. The Y plane has one byte per pixel. The Cb plane immediately follows the Y plane in memory. The Cb plane is ¼ the width of the Y plane (and of the image). Each Cb belongs to 4 pixels all on the same row. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, Y'\ :sub:`02` and Y'\ :sub:`03`. Following the Cb plane is the Cr plane, just like the Cb plane. If the Y plane has pad bytes after each row, then the Cr and Cb planes have ¼ as many pad bytes after their rows. In other words, four C x rows (including padding) is exactly as long as one Y row (including padding). **Byte Order.** Each cell is one byte. .. flat-table:: :header-rows: 0 :stub-columns: 0 * - start + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - start + 16: - Cb\ :sub:`00` * - start + 17: - Cb\ :sub:`10` * - start + 18: - Cb\ :sub:`20` * - start + 19: - Cb\ :sub:`30` * - start + 20: - Cr\ :sub:`00` * - start + 21: - Cr\ :sub:`10` * - start + 22: - Cr\ :sub:`20` * - start + 23: - Cr\ :sub:`30` **Color Sample Location:** .. flat-table:: :header-rows: 0 :stub-columns: 0 * - - 0 - 1 - - 2 - 3 * - 0 - Y - Y - C - Y - Y * - 1 - Y - Y - C - Y - Y * - 2 - Y - Y - C - Y - Y * - 3 - Y - Y - C - Y - Y