.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. planar-yuv: ****************** Planar YUV formats ****************** Planar formats split luma and chroma data in separate memory regions. They exist in two variants: - Semi-planar formats use two planes. The first plane is the luma plane and stores the Y components. The second plane is the chroma plane and stores the Cb and Cr components interleaved. - Fully planar formats use three planes to store the Y, Cb and Cr components separately. Within a plane, components are stored in pixel order, which may be linear or tiled. Padding may be supported at the end of the lines, and the line stride of the chroma planes may be constrained by the line stride of the luma plane. Some planar formats allow planes to be placed in independent memory locations. They are identified by an 'M' suffix in their name (such as in ``V4L2_PIX_FMT_NV12M``). Those formats are intended to be used only in drivers and applications that support the multi-planar API, described in :ref:`planar-apis`. Unless explicitly documented as supporting non-contiguous planes, formats require the planes to follow each other immediately in memory. Semi-Planar YUV Formats ======================= These formats are commonly referred to as NV formats (NV12, NV16, ...). They use two planes, and store the luma components in the first plane and the chroma components in the second plane. The Cb and Cr components are interleaved in the chroma plane, with Cb and Cr always stored in pairs. The chroma order is exposed as different formats. For memory contiguous formats, the number of padding pixels at the end of the chroma lines is identical to the padding of the luma lines. Without horizontal subsampling, the chroma line stride (in bytes) is thus equal to twice the luma line stride. With horizontal subsampling by 2, the chroma line stride is equal to the luma line stride. Vertical subsampling doesn't affect the line stride. For non-contiguous formats, no constraints are enforced by the format on the relationship between the luma and chroma line padding and stride. All components are stored with the same number of bits per component. .. raw:: latex \footnotesize .. tabularcolumns:: |p{5.2cm}|p{1.0cm}|p{1.5cm}|p{1.9cm}|p{1.2cm}|p{1.8cm}|p{2.7cm}| .. flat-table:: Overview of Semi-Planar YUV Formats :header-rows: 1 :stub-columns: 0 * - Identifier - Code - Bits per component - Subsampling - Chroma order [1]_ - Contiguous [2]_ - Tiling [3]_ * - V4L2_PIX_FMT_NV12 - 'NV12' - 8 - 4:2:0 - Cb, Cr - Yes - Linear * - V4L2_PIX_FMT_NV21 - 'NV21' - 8 - 4:2:0 - Cr, Cr - Yes - Linear * - V4L2_PIX_FMT_NV12M - 'NM12' - 8 - 4:2:0 - Cb, Cr - No - Linear * - V4L2_PIX_FMT_NV21M - 'NM21' - 8 - 4:2:0 - Cr, Cr - No - Linear * - V4L2_PIX_FMT_NV12MT - 'TM12' - 8 - 4:2:0 - Cb, Cr - No - 64x32 macroblocks Horizontal Z order * - V4L2_PIX_FMT_NV12MT_16X16 - 'VM12' - 8 - 4:2:2 - Cb, Cr - No - 16x16 macroblocks * - V4L2_PIX_FMT_NV16 - 'NV16' - 8 - 4:2:2 - Cb, Cr - Yes - Linear * - V4L2_PIX_FMT_NV61 - 'NV61' - 8 - 4:2:2 - Cr, Cr - Yes - Linear * - V4L2_PIX_FMT_NV16M - 'NM16' - 8 - 4:2:2 - Cb, Cr - No - Linear * - V4L2_PIX_FMT_NV61M - 'NM61' - 8 - 4:2:2 - Cr, Cr - No - Linear * - V4L2_PIX_FMT_NV24 - 'NV24' - 8 - 4:4:4 - Cb, Cr - Yes - Linear * - V4L2_PIX_FMT_NV42 - 'NV42' - 8 - 4:4:4 - Cr, Cr - Yes - Linear .. raw:: latex \normalsize .. [1] Order of chroma samples in the second plane .. [2] Indicates if planes have to be contiguous in memory or can be disjoint .. [3] Macroblock size in pixels **Color Sample Location:** Chroma samples are :ref:`interstitially sited` horizontally. .. _V4L2-PIX-FMT-NV12: .. _V4L2-PIX-FMT-NV21: .. _V4L2-PIX-FMT-NV12M: .. _V4L2-PIX-FMT-NV21M: NV12, NV21, NV12M and NV21M --------------------------- Semi-planar YUV 4:2:0 formats. The chroma plane is subsampled by 2 in each direction. Chroma lines contain half the number of pixels and the same number of bytes as luma lines, and the chroma plane contains half the number of lines of the luma plane. .. flat-table:: Sample 4x4 NV12 Image :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` - Cr\ :sub:`00` - Cb\ :sub:`01` - Cr\ :sub:`01` * - start + 20: - Cb\ :sub:`10` - Cr\ :sub:`10` - Cb\ :sub:`11` - Cr\ :sub:`11` .. flat-table:: Sample 4x4 NV12M Image :header-rows: 0 :stub-columns: 0 * - start0 + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start0 + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start0 + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start0 + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - * - start1 + 0: - Cb\ :sub:`00` - Cr\ :sub:`00` - Cb\ :sub:`01` - Cr\ :sub:`01` * - start1 + 4: - Cb\ :sub:`10` - Cr\ :sub:`10` - Cb\ :sub:`11` - Cr\ :sub:`11` .. _V4L2-PIX-FMT-NV12MT: .. _V4L2-PIX-FMT-NV12MT-16X16: .. _V4L2-PIX-FMT-NV12-32L32: Tiled NV12 ---------- Semi-planar YUV 4:2:0 formats, using macroblock tiling. The chroma plane is subsampled by 2 in each direction. Chroma lines contain half the number of pixels and the same number of bytes as luma lines, and the chroma plane contains half the number of lines of the luma plane. Each tile follows the previous one linearly in memory (from left to right, top to bottom). ``V4L2_PIX_FMT_NV12MT_16X16`` stores pixel in 2D 16x16 macroblocks, and stores macroblocks linearly in memory. The line stride and image height must be aligned to a multiple of 16. The layouts of the luma and chroma planes are identical. ``V4L2_PIX_FMT_NV12MT`` stores pixels in 2D 64x32 macroblocks, and stores 2x2 groups of macroblocks in Z-order in memory, alternating Z and mirrored Z shapes horizontally. The line stride must be a multiple of 128 pixels to ensure an integer number of Z shapes. The image height must be a multiple of 32 pixels. If the vertical resolution is an odd number of macroblocks, the last row of macroblocks is stored in linear order. The layouts of the luma and chroma planes are identical. ``V4L2_PIX_FMT_NV12_32L32`` stores pixel in 32x32 tiles, and stores tiles linearly in memory. The line stride and image height must be aligned to a multiple of 32. The layouts of the luma and chroma planes are identical. .. _nv12mt: .. kernel-figure:: nv12mt.svg :alt: nv12mt.svg :align: center V4L2_PIX_FMT_NV12MT macroblock Z shape memory layout .. _nv12mt_ex: .. kernel-figure:: nv12mt_example.svg :alt: nv12mt_example.svg :align: center Example V4L2_PIX_FMT_NV12MT memory layout of macroblocks .. _V4L2-PIX-FMT-NV16: .. _V4L2-PIX-FMT-NV61: .. _V4L2-PIX-FMT-NV16M: .. _V4L2-PIX-FMT-NV61M: NV16, NV61, NV16M and NV61M --------------------------- Semi-planar YUV 4:2:2 formats. The chroma plane is subsampled by 2 in the horizontal direction. Chroma lines contain half the number of pixels and the same number of bytes as luma lines, and the chroma plane contains the same number of lines as the luma plane. .. flat-table:: Sample 4x4 NV16 Image :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` - Cr\ :sub:`00` - Cb\ :sub:`01` - Cr\ :sub:`01` * - start + 20: - Cb\ :sub:`10` - Cr\ :sub:`10` - Cb\ :sub:`11` - Cr\ :sub:`11` * - start + 24: - Cb\ :sub:`20` - Cr\ :sub:`20` - Cb\ :sub:`21` - Cr\ :sub:`21` * - start + 28: - Cb\ :sub:`30` - Cr\ :sub:`30` - Cb\ :sub:`31` - Cr\ :sub:`31` .. flat-table:: Sample 4x4 NV16M Image :header-rows: 0 :stub-columns: 0 * - start0 + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start0 + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start0 + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start0 + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - * - start1 + 0: - Cb\ :sub:`00` - Cr\ :sub:`00` - Cb\ :sub:`02` - Cr\ :sub:`02` * - start1 + 4: - Cb\ :sub:`10` - Cr\ :sub:`10` - Cb\ :sub:`12` - Cr\ :sub:`12` * - start1 + 8: - Cb\ :sub:`20` - Cr\ :sub:`20` - Cb\ :sub:`22` - Cr\ :sub:`22` * - start1 + 12: - Cb\ :sub:`30` - Cr\ :sub:`30` - Cb\ :sub:`32` - Cr\ :sub:`32` .. _V4L2-PIX-FMT-NV24: .. _V4L2-PIX-FMT-NV42: NV24 and NV42 ------------- Semi-planar YUV 4:4:4 formats. The chroma plane is not subsampled. Chroma lines contain the same number of pixels and twice the number of bytes as luma lines, and the chroma plane contains the same number of lines as the luma plane. .. flat-table:: Sample 4x4 NV24 Image :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` - Cr\ :sub:`00` - Cb\ :sub:`01` - Cr\ :sub:`01` - Cb\ :sub:`02` - Cr\ :sub:`02` - Cb\ :sub:`03` - Cr\ :sub:`03` * - start + 24: - Cb\ :sub:`10` - Cr\ :sub:`10` - Cb\ :sub:`11` - Cr\ :sub:`11` - Cb\ :sub:`12` - Cr\ :sub:`12` - Cb\ :sub:`13` - Cr\ :sub:`13` * - start + 32: - Cb\ :sub:`20` - Cr\ :sub:`20` - Cb\ :sub:`21` - Cr\ :sub:`21` - Cb\ :sub:`22` - Cr\ :sub:`22` - Cb\ :sub:`23` - Cr\ :sub:`23` * - start + 40: - Cb\ :sub:`30` - Cr\ :sub:`30` - Cb\ :sub:`31` - Cr\ :sub:`31` - Cb\ :sub:`32` - Cr\ :sub:`32` - Cb\ :sub:`33` - Cr\ :sub:`33` Fully Planar YUV Formats ======================== These formats store the Y, Cb and Cr components in three separate planes. The luma plane comes first, and the order of the two chroma planes varies between formats. The two chroma planes always use the same subsampling. For memory contiguous formats, the number of padding pixels at the end of the chroma lines is identical to the padding of the luma lines. The chroma line stride (in bytes) is thus equal to the luma line stride divided by the horizontal subsampling factor. Vertical subsampling doesn't affect the line stride. For non-contiguous formats, no constraints are enforced by the format on the relationship between the luma and chroma line padding and stride. All components are stored with the same number of bits per component. .. raw:: latex \small .. tabularcolumns:: |p{5.0cm}|p{1.1cm}|p{1.5cm}|p{2.2cm}|p{1.2cm}|p{3.7cm}| .. flat-table:: Overview of Fully Planar YUV Formats :header-rows: 1 :stub-columns: 0 * - Identifier - Code - Bits per component - Subsampling - Planes order [4]_ - Contiguous [5]_ * - V4L2_PIX_FMT_YUV410 - 'YUV9' - 8 - 4:1:0 - Y, Cb, Cr - Yes * - V4L2_PIX_FMT_YVU410 - 'YVU9' - 8 - 4:1:0 - Y, Cr, Cb - Yes * - V4L2_PIX_FMT_YUV411P - '411P' - 8 - 4:1:1 - Y, Cb, Cr - Yes * - V4L2_PIX_FMT_YUV420M - 'YM12' - 8 - 4:2:0 - Y, Cb, Cr - No * - V4L2_PIX_FMT_YVU420M - 'YM21' - 8 - 4:2:0 - Y, Cr, Cb - No * - V4L2_PIX_FMT_YUV420 - 'YU12' - 8 - 4:2:0 - Y, Cb, Cr - Yes * - V4L2_PIX_FMT_YVU420 - 'YV12' - 8 - 4:2:0 - Y, Cr, Cb - Yes * - V4L2_PIX_FMT_YUV422P - '422P' - 8 - 4:2:2 - Y, Cb, Cr - Yes * - V4L2_PIX_FMT_YUV422M - 'YM16' - 8 - 4:2:2 - Y, Cb, Cr - No * - V4L2_PIX_FMT_YVU422M - 'YM61' - 8 - 4:2:2 - Y, Cr, Cb - No * - V4L2_PIX_FMT_YUV444M - 'YM24' - 8 - 4:4:4 - Y, Cb, Cr - No * - V4L2_PIX_FMT_YVU444M - 'YM42' - 8 - 4:4:4 - Y, Cr, Cb - No .. raw:: latex \normalsize .. [4] Order of luma and chroma planes .. [5] Indicates if planes have to be contiguous in memory or can be disjoint **Color Sample Location:** Chroma samples are :ref:`interstitially sited` horizontally. .. _V4L2-PIX-FMT-YUV410: .. _V4L2-PIX-FMT-YVU410: YUV410 and YVU410 ----------------- Planar YUV 4:1:0 formats. The chroma planes are subsampled by 4 in each direction. Chroma lines contain a quarter of the number of pixels and bytes of the luma lines, and the chroma planes contain a quarter of the number of lines of the luma plane. .. flat-table:: Sample 4x4 YUV410 Image :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` * - start + 17: - Cb\ :sub:`00` .. _V4L2-PIX-FMT-YUV411P: YUV411P ------- Planar YUV 4:1:1 formats. The chroma planes are subsampled by 4 in the horizontal direction. Chroma lines contain a quarter of the number of pixels and bytes of the luma lines, and the chroma planes contain the same number of lines as the luma plane. .. flat-table:: Sample 4x4 YUV411P Image :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` .. _V4L2-PIX-FMT-YUV420: .. _V4L2-PIX-FMT-YVU420: .. _V4L2-PIX-FMT-YUV420M: .. _V4L2-PIX-FMT-YVU420M: YUV420, YVU420, YUV420M and YVU420M ----------------------------------- Planar YUV 4:2:0 formats. The chroma planes are subsampled by 2 in each direction. Chroma lines contain half of the number of pixels and bytes of the luma lines, and the chroma planes contain half of the number of lines of the luma plane. .. flat-table:: Sample 4x4 YUV420 Image :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` .. flat-table:: Sample 4x4 YUV420M Image :header-rows: 0 :stub-columns: 0 * - start0 + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start0 + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start0 + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start0 + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - * - start1 + 0: - Cb\ :sub:`00` - Cb\ :sub:`01` * - start1 + 2: - Cb\ :sub:`10` - Cb\ :sub:`11` * - * - start2 + 0: - Cr\ :sub:`00` - Cr\ :sub:`01` * - start2 + 2: - Cr\ :sub:`10` - Cr\ :sub:`11` .. _V4L2-PIX-FMT-YUV422P: .. _V4L2-PIX-FMT-YUV422M: .. _V4L2-PIX-FMT-YVU422M: YUV422P, YUV422M and YVU422M ---------------------------- Planar YUV 4:2:2 formats. The chroma planes are subsampled by 2 in the horizontal direction. Chroma lines contain half of the number of pixels and bytes of the luma lines, and the chroma planes contain the same number of lines as the luma plane. .. flat-table:: Sample 4x4 YUV422P Image :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` - Cb\ :sub:`01` * - start + 18: - Cb\ :sub:`10` - Cb\ :sub:`11` * - start + 20: - Cb\ :sub:`20` - Cb\ :sub:`21` * - start + 22: - Cb\ :sub:`30` - Cb\ :sub:`31` * - start + 24: - Cr\ :sub:`00` - Cr\ :sub:`01` * - start + 26: - Cr\ :sub:`10` - Cr\ :sub:`11` * - start + 28: - Cr\ :sub:`20` - Cr\ :sub:`21` * - start + 30: - Cr\ :sub:`30` - Cr\ :sub:`31` .. flat-table:: Sample 4x4 YUV422M Image :header-rows: 0 :stub-columns: 0 * - start0 + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start0 + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start0 + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start0 + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - * - start1 + 0: - Cb\ :sub:`00` - Cb\ :sub:`01` * - start1 + 2: - Cb\ :sub:`10` - Cb\ :sub:`11` * - start1 + 4: - Cb\ :sub:`20` - Cb\ :sub:`21` * - start1 + 6: - Cb\ :sub:`30` - Cb\ :sub:`31` * - * - start2 + 0: - Cr\ :sub:`00` - Cr\ :sub:`01` * - start2 + 2: - Cr\ :sub:`10` - Cr\ :sub:`11` * - start2 + 4: - Cr\ :sub:`20` - Cr\ :sub:`21` * - start2 + 6: - Cr\ :sub:`30` - Cr\ :sub:`31` .. _V4L2-PIX-FMT-YUV444M: .. _V4L2-PIX-FMT-YVU444M: YUV444M and YVU444M ------------------- Planar YUV 4:4:4 formats. The chroma planes are no subsampled. Chroma lines contain the same number of pixels and bytes of the luma lines, and the chroma planes contain the same number of lines as the luma plane. .. flat-table:: Sample 4x4 YUV444M Image :header-rows: 0 :stub-columns: 0 * - start0 + 0: - Y'\ :sub:`00` - Y'\ :sub:`01` - Y'\ :sub:`02` - Y'\ :sub:`03` * - start0 + 4: - Y'\ :sub:`10` - Y'\ :sub:`11` - Y'\ :sub:`12` - Y'\ :sub:`13` * - start0 + 8: - Y'\ :sub:`20` - Y'\ :sub:`21` - Y'\ :sub:`22` - Y'\ :sub:`23` * - start0 + 12: - Y'\ :sub:`30` - Y'\ :sub:`31` - Y'\ :sub:`32` - Y'\ :sub:`33` * - * - start1 + 0: - Cb\ :sub:`00` - Cb\ :sub:`01` - Cb\ :sub:`02` - Cb\ :sub:`03` * - start1 + 4: - Cb\ :sub:`10` - Cb\ :sub:`11` - Cb\ :sub:`12` - Cb\ :sub:`13` * - start1 + 8: - Cb\ :sub:`20` - Cb\ :sub:`21` - Cb\ :sub:`22` - Cb\ :sub:`23` * - start1 + 12: - Cb\ :sub:`20` - Cb\ :sub:`21` - Cb\ :sub:`32` - Cb\ :sub:`33` * - * - start2 + 0: - Cr\ :sub:`00` - Cr\ :sub:`01` - Cr\ :sub:`02` - Cr\ :sub:`03` * - start2 + 4: - Cr\ :sub:`10` - Cr\ :sub:`11` - Cr\ :sub:`12` - Cr\ :sub:`13` * - start2 + 8: - Cr\ :sub:`20` - Cr\ :sub:`21` - Cr\ :sub:`22` - Cr\ :sub:`23` * - start2 + 12: - Cr\ :sub:`30` - Cr\ :sub:`31` - Cr\ :sub:`32` - Cr\ :sub:`33`