Video Settings¶

Enumerations for video format and display settings.

ColorFormat¶

class avblocks.ColorFormat(value, names=<not given>, *values, module=None, qualname=None, type=None, start=1, boundary=None)¶

Bases: IntEnum

Defines constants for various color formats.

A color format is combination of color space, color depth, chroma sub-sampling, component layout and packing.

BGR24 = 12¶: Composite B->G->R

BGR32 = 11¶: Composite B->G->R

BGR444 = 15¶: Composite B->G->R->A, 4 bit per component

BGR555 = 14¶: Composite B->G->R->A, 5 bit per component, 1 bit per A

BGR565 = 13¶: Composite B->G->R, 5 bit per B & R, 6 bit per G

BGRA32 = 21¶: Composite B->G->R->A

GRAY = 16¶: Luminance component only.

NV12 = 2¶

Type:: Planar Y, merged U->V (4
Type:: 2

UYVY = 4¶

Type:: Composite U->Y->V->Y (4
Type:: 2

Unknown = 0¶: The color format is not specified or unknown.

Y411 = 9¶

Type:: Composite Y, U, V (4
Type:: 1

Y41P = 10¶

Type:: Composite Y, U, V (4
Type:: 1

YUV411 = 5¶

Type:: Planar Y, U, V (4
Type:: 1

YUV420 = 6¶

Type:: Planar Y, U, V (4
Type:: 2

YUV420A = 17¶: Planar Y, U, V, Alpha

YUV422 = 7¶

Type:: Planar Y, U, V (4
Type:: 2

YUV422A = 18¶: Planar Y, U, V, Alpha

YUV444 = 8¶

Type:: Planar Y, U, V (4
Type:: 4

YUV444A = 19¶: Planar Y, U, V, Alpha

YUY2 = 3¶

Type:: Composite Y->U->Y->V (4
Type:: 2

YV12 = 1¶

(note V,U order!)

Type:: Planar Y, V, U (4
Type:: 2

YVU9 = 20¶: The vertical subsampling interval is 4. The horizontal subsampling interval is also 4 This means that a single V and a single U sample are taken for each square block of 16 image pixels. Effectively this averages 9 bits per pixel (16 pixels => 16Y + 1V + 1U => 144bits => 9bits/pixel)

ScanType¶

class avblocks.ScanType(value, names=<not given>, *values, module=None, qualname=None, type=None, start=1, boundary=None)¶

Bases: IntEnum

Defines video interlace/scan types.

BottomFieldFirst = 3¶: Interlaced video, where the dominant (first in time) field is the bottom field.

Progressive = 1¶: Progressive (non-interlaced) video.

TopFieldFirst = 2¶: Interlaced video, where the dominant (first in time) field is the top field.

Unknown = 0¶: The interlace/scan type is not specified or not known.