ColorBars node

pluginIcon

This documentation is for version 1.0 of ColorBars (net.sf.openfx.ColorBars).

Description

Generate an image with SMPTE RP 219:2002 color bars.

The output of this plugin is broadcast-safe of “Output IRE” is unchecked. Be careful that colorbars are defined in a nonlinear colorspace. In order to get linear RGB, this plug-in should be combined with a transformation from the video space to linear.

See also: https://web.archive.org/web/20220807183203/http://www.opticalenquiry.com/nuke/index.php?title=Constant,_CheckerBoard,_ColorBars,_ColorWheel

Inputs

Input

Description

Optional

Source

Yes

Controls

Parameter / script name

Type

Default

Function

Extent / extent

Choice

Default

Extent (size and offset) of the output.
Format (format): Use a pre-defined image format.
Size (size): Use a specific extent (size and offset).
Project (project): Use the project extent (size and offset).
Default (default): Use the default extent (e.g. the source clip extent, if connected).

Center / recenter

Button

Centers the region of definition to the input region of definition. If there is no input, then the region of definition is centered to the project window.

Reformat / reformat

Boolean

Off

Set the output format to the given extent, except if the Bottom Left or Size parameters is animated.

Format / NatronParamFormatChoice

Choice

HD 1920x1080

The output format
PC_Video 640x480 (PC_Video)
NTSC 720x486 0.91 (NTSC)
PAL 720x576 1.09 (PAL)
NTSC_16:9 720x486 1.21 (NTSC_16:9)
PAL_16:9 720x576 1.46 (PAL_16:9)
HD_720 1280x720 (HD_720)
HD 1920x1080 (HD)
UHD_4K 3840x2160 (UHD_4K)
1K_Super_35(full-ap) 1024x778 (1K_Super_35(full-ap))
1K_Cinemascope 914x778 2.00 (1K_Cinemascope)
2K_Super_35(full-ap) 2048x1556 (2K_Super_35(full-ap))
2K_Cinemascope 1828x1556 2.00 (2K_Cinemascope)
2K_DCP 2048x1080 (2K_DCP)
4K_Super_35(full-ap) 4096x3112 (4K_Super_35(full-ap))
4K_Cinemascope 3656x3112 2.00 (4K_Cinemascope)
4K_DCP 4096x2160 (4K_DCP)
square_256 256x256 (square_256)
square_512 512x512 (square_512)
square_1K 1024x1024 (square_1K)
square_2K 2048x2048 (square_2K)

Bottom Left / bottomLeft

Double

x: 0 y: 0

Coordinates of the bottom left corner of the size rectangle.

Size / size

Double

w: 1 h: 1

Width and height of the size rectangle.

Interactive Update / interactive

Boolean

Off

If checked, update the parameter values during interaction with the image viewer, else update the values when pen is released.

HiDPI / hidpi

Boolean

Off

Should be checked when the display area is High-DPI (a.k.a Retina). Draws OpenGL overlays twice larger.

Frame Range / frameRange

Integer

min: 1 max: 1

Time domain.

Output Components / outputComponents

Choice

RGBA

Components in the output
RGBA
RGB

Bar Intensity / barIntensity

Double

75

Bar Intensity, in IRE unit.

Output IRE / outputIRE

Boolean

Off

When checked, the output is scaled so that 0 is black, the max value is white, and the superblack (under the middle of the magenta bar) has a negative value.