mirror of https://gitee.com/openkylin/linux.git
65 lines
1.9 KiB
ReStructuredText
65 lines
1.9 KiB
ReStructuredText
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.. Permission is granted to copy, distribute and/or modify this
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.. document under the terms of the GNU Free Documentation License,
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.. Version 1.1 or any later version published by the Free Software
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.. Foundation, with no Invariant Sections, no Front-Cover Texts
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.. and no Back-Cover Texts. A copy of the license is included at
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.. Documentation/userspace-api/media/fdl-appendix.rst.
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..
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.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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.. _yuv-formats:
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***********
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YUV Formats
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***********
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YUV is the format native to TV broadcast and composite video signals. It
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separates the brightness information (Y) from the color information (U
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and V or Cb and Cr). The color information consists of red and blue
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*color difference* signals, this way the green component can be
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reconstructed by subtracting from the brightness component. See
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:ref:`colorspaces` for conversion examples. YUV was chosen because
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early television would only transmit brightness information. To add
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color in a way compatible with existing receivers a new signal carrier
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was added to transmit the color difference signals. Secondary in the YUV
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format the U and V components usually have lower resolution than the Y
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component. This is an analog video compression technique taking
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advantage of a property of the human visual system, being more sensitive
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to brightness information.
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.. toctree::
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:maxdepth: 1
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pixfmt-packed-yuv
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pixfmt-grey
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pixfmt-y10
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pixfmt-y12
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pixfmt-y14
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pixfmt-y10b
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pixfmt-y10p
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pixfmt-y16
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pixfmt-y16-be
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pixfmt-y8i
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pixfmt-y12i
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pixfmt-uv8
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pixfmt-yuyv
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pixfmt-uyvy
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pixfmt-yvyu
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pixfmt-vyuy
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pixfmt-y41p
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pixfmt-yuv420
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pixfmt-yuv420m
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pixfmt-yuv422m
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pixfmt-yuv444m
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pixfmt-yuv410
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pixfmt-yuv422p
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pixfmt-yuv411p
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pixfmt-nv12
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pixfmt-nv12m
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pixfmt-nv12mt
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pixfmt-nv16
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pixfmt-nv16m
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pixfmt-nv24
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pixfmt-m420
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