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+.. Permission is granted to copy, distribute and/or modify this
+.. document under the terms of the GNU Free Documentation License,
+.. Version 1.1 or any later version published by the Free Software
+.. Foundation, with no Invariant Sections, no Front-Cover Texts
+.. and no Back-Cover Texts. A copy of the license is included at
+.. Documentation/userspace-api/media/fdl-appendix.rst.
+..
+.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
+
+.. _V4L2-PIX-FMT-YVU420:
+.. _V4L2-PIX-FMT-YUV420:
+
+**********************************************************
+V4L2_PIX_FMT_YVU420 ('YV12'), V4L2_PIX_FMT_YUV420 ('YU12')
+**********************************************************
+
+
+V4L2_PIX_FMT_YUV420
+Planar formats with ½ horizontal and vertical chroma resolution, also
+known as YUV 4:2:0
+
+
+Description
+===========
+
+These are planar formats, as opposed to a packed format. The three
+components are separated into three sub- images or planes. The Y plane
+is first. The Y plane has one byte per pixel. For
+``V4L2_PIX_FMT_YVU420``, the Cr plane immediately follows the Y plane in
+memory. The Cr plane is half the width and half the height of the Y
+plane (and of the image). Each Cr belongs to four pixels, a two-by-two
+square of the image. For example, Cr\ :sub:`0` belongs to Y'\ :sub:`00`,
+Y'\ :sub:`01`, Y'\ :sub:`10`, and Y'\ :sub:`11`. Following the Cr plane
+is the Cb plane, just like the Cr plane. ``V4L2_PIX_FMT_YUV420`` is the
+same except the Cb plane comes first, then the Cr plane.
+
+If the Y plane has pad bytes after each row, then the Cr and Cb planes
+have half as many pad bytes after their rows. In other words, two Cx
+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:
+ - Cr\ :sub:`00`
+ - Cr\ :sub:`01`
+ * - start + 18:
+ - Cr\ :sub:`10`
+ - Cr\ :sub:`11`
+ * - start + 20:
+ - Cb\ :sub:`00`
+ - Cb\ :sub:`01`
+ * - start + 22:
+ - Cb\ :sub:`10`
+ - Cb\ :sub:`11`
+
+
+**Color Sample Location:**
+
+
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ * -
+ - 0
+ -
+ - 1
+ -
+ - 2
+ -
+ - 3
+ * - 0
+ - Y
+ -
+ - Y
+ -
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ -
+ - C
+ -
+ * - 1
+ - Y
+ -
+ - Y
+ -
+ - Y
+ -
+ - Y
+ * -
+ * - 2
+ - Y
+ -
+ - Y
+ -
+ - Y
+ -
+ - Y
+ * -
+ -
+ - C
+ -
+ -
+ -
+ - C
+ -
+ * - 3
+ - Y
+ -
+ - Y
+ -
+ - Y
+ -
+ - Y