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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 17:40:06 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 17:59:40 +0300 |
| commit | 60c2820d0f6d3497975b6488e2599f8f611d8b95 (patch) | |
| tree | b3b03707c6438ea9b99cc57e847ebf517f968ab1 /Documentation/media/uapi/v4l/yuv-formats.rst | |
| parent | a97369b5e21ea9b8b5fef7c0f4f48bbe60c07ca3 (diff) | |
| download | linux-60c2820d0f6d3497975b6488e2599f8f611d8b95.tar.xz | |
doc_rst: rename the media Sphinx suff to Documentation/media
The name of the subsystem is "media", and not "linux_tv". Also,
as we plan to add other stuff there in the future, let's
rename also the media uAPI book to media_uapi, to make it
clearer.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/uapi/v4l/yuv-formats.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/yuv-formats.rst | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/yuv-formats.rst b/Documentation/media/uapi/v4l/yuv-formats.rst new file mode 100644 index 000000000000..3334ea445657 --- /dev/null +++ b/Documentation/media/uapi/v4l/yuv-formats.rst @@ -0,0 +1,55 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _yuv-formats: + +*********** +YUV Formats +*********** + +YUV is the format native to TV broadcast and composite video signals. It +separates the brightness information (Y) from the color information (U +and V or Cb and Cr). The color information consists of red and blue +*color difference* signals, this way the green component can be +reconstructed by subtracting from the brightness component. See +:ref:`colorspaces` for conversion examples. YUV was chosen because +early television would only transmit brightness information. To add +color in a way compatible with existing receivers a new signal carrier +was added to transmit the color difference signals. Secondary in the YUV +format the U and V components usually have lower resolution than the Y +component. This is an analog video compression technique taking +advantage of a property of the human visual system, being more sensitive +to brightness information. + + +.. toctree:: + :maxdepth: 1 + + pixfmt-packed-yuv + pixfmt-grey + pixfmt-y10 + pixfmt-y12 + pixfmt-y10b + pixfmt-y16 + pixfmt-y16-be + pixfmt-y8i + pixfmt-y12i + pixfmt-uv8 + pixfmt-yuyv + pixfmt-uyvy + pixfmt-yvyu + pixfmt-vyuy + pixfmt-y41p + pixfmt-yuv420 + pixfmt-yuv420m + pixfmt-yuv422m + pixfmt-yuv444m + pixfmt-yuv410 + pixfmt-yuv422p + pixfmt-yuv411p + pixfmt-nv12 + pixfmt-nv12m + pixfmt-nv12mt + pixfmt-nv16 + pixfmt-nv16m + pixfmt-nv24 + pixfmt-m420 |