- Table of Contents
- Packed YUV formats -- Packed YUV formats
- V4L2_PIX_FMT_GREY ('GREY') -- Grey-scale image
- V4L2_PIX_FMT_Y16 ('Y16 ') -- Grey-scale image
- V4L2_PIX_FMT_YUYV ('YUYV') -- Packed format with ½ horizontal chroma
resolution, also known as YUV 4:2:2
- V4L2_PIX_FMT_UYVY ('UYVY') -- Variation of
V4L2_PIX_FMT_YUYV with different order of samples
in memory - V4L2_PIX_FMT_Y41P ('Y41P') -- Format with ¼ horizontal chroma
resolution, also known as YUV 4:1:1
- V4L2_PIX_FMT_YVU420 ('YV12'), V4L2_PIX_FMT_YUV420 ('YU12') -- Planar formats with ½ horizontal and
vertical chroma resolution, also known as YUV 4:2:0
- V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9') -- Planar formats with ¼ horizontal and
vertical chroma resolution, also known as YUV 4:1:0
- V4L2_PIX_FMT_YUV422P ('422P') -- Format with ½ horizontal chroma resolution,
also known as YUV 4:2:2. Planar layout as opposed to
V4L2_PIX_FMT_YUYV - V4L2_PIX_FMT_YUV411P ('411P') -- Format with ¼ horizontal chroma resolution,
also known as YUV 4:1:1. Planar layout as opposed to
V4L2_PIX_FMT_Y41P - V4L2_PIX_FMT_NV12 ('NV12'), V4L2_PIX_FMT_NV21 ('NV21') -- Formats with ½ horizontal and vertical
chroma resolution, also known as YUV 4:2:0. One luminance and one
chrominance plane with alternating chroma samples as opposed to
V4L2_PIX_FMT_YVU420
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 Section 2.2 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.