1.. Permission is granted to copy, distribute and/or modify this
2.. document under the terms of the GNU Free Documentation License,
3.. Version 1.1 or any later version published by the Free Software
4.. Foundation, with no Invariant Sections, no Front-Cover Texts
5.. and no Back-Cover Texts. A copy of the license is included at
6.. Documentation/userspace-api/media/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _yuv-formats:
11
12***********
13YUV Formats
14***********
15
16YUV is the format native to TV broadcast and composite video signals. It
17separates the brightness information (Y) from the color information (U
18and V or Cb and Cr). The color information consists of red and blue
19*color difference* signals, this way the green component can be
20reconstructed by subtracting from the brightness component. See
21:ref:`colorspaces` for conversion examples. YUV was chosen because
22early television would only transmit brightness information. To add
23color in a way compatible with existing receivers a new signal carrier
24was added to transmit the color difference signals. Secondary in the YUV
25format the U and V components usually have lower resolution than the Y
26component. This is an analog video compression technique taking
27advantage of a property of the human visual system, being more sensitive
28to brightness information.
29
30
31.. toctree::
32    :maxdepth: 1
33
34    pixfmt-packed-yuv
35    pixfmt-grey
36    pixfmt-y10
37    pixfmt-y12
38    pixfmt-y14
39    pixfmt-y10b
40    pixfmt-y10p
41    pixfmt-y16
42    pixfmt-y16-be
43    pixfmt-y8i
44    pixfmt-y12i
45    pixfmt-uv8
46    pixfmt-yuyv
47    pixfmt-uyvy
48    pixfmt-yvyu
49    pixfmt-vyuy
50    pixfmt-y41p
51    pixfmt-yuv420
52    pixfmt-yuv420m
53    pixfmt-yuv422m
54    pixfmt-yuv444m
55    pixfmt-yuv410
56    pixfmt-yuv422p
57    pixfmt-yuv411p
58    pixfmt-nv12
59    pixfmt-nv12m
60    pixfmt-nv12mt
61    pixfmt-nv16
62    pixfmt-nv16m
63    pixfmt-nv24
64    pixfmt-m420
65