OCIOCDLTransform

Applies an ASC CDL (American Society of Cinematographers Color Decision List) grade based on the OpenColorIO Library. For more information, see https://opencolorio.org.

Note: There are a number of NDK examples covering OCIO workflows that ship with the Nuke developer documentation, which can be found here:
<install_directory>/Documentation/NDKExamples/Plugins/00b_8source.html

Inputs and Controls

Connection Type	Connection Name	Function
Input	unnamed	The image sequence to receive the CDL transform.
mask	An optional image to use as a mask. By default, the CDL transform is limited to the non-black areas of the mask. At first, the mask input appears as a triangle on the right side of the node, but when you drag it, it turns into an arrow labeled mask. If you cannot see the mask input, ensure that the mask control is disabled or set to none.

Connection Type

Connection Name

Function

Input

unnamed

The image sequence to receive the CDL transform.

mask

An optional image to use as a mask. By default, the CDL transform is limited to the non-black areas of the mask.

At first, the mask input appears as a triangle on the right side of the node, but when you drag it, it turns into an arrow labeled mask. If you cannot see the mask input, ensure that the mask control is disabled or set to none.

Control (UI)	Knob (Scripting)	Default Value	Function
OCIOCDLTransform Tab
channels	channels	rgb	The CDL transform is applied only to these channels. If you set this to something other than all or none, you can use the checkboxes on the right to select individual channels.
slope	slope	1	Adjusts the gain for the entire image.
offset	offset	0	Adjusts the offset for the entire image.
power	power	1	Adjusts the gamma for the entire image.
saturation	saturation	1	Adjusts the saturation for the entire image.
direction	direction	forward	Select Inverse to invert the transform.
working space	working_space	linear	Sets the color space in which the file is applied. The input is transformed from scene linear to the selected working space, the file color transform is applied, and then the result is transformed back to scene linear.
read from file	read_from_file	disabled	Enable this to load color correction information from a .cc or .ccc file.
file	file	none	The ASC CDL file to use for the transform. This can be a .cc or .ccc file.
cccid	cccid	none	If the ASC CDL file is a .ccc (Color Correction Collection) file, specify the cccid to look up here.
select cccid	select_cccid	N/A	Click to open the cccid dialog and select the cccid from the dropdown menu. You can view the Slope, Offset, Power and Saturation settings for the chosen .ccc from within this dialog. These cannot be modified.
export grade as .cc	export_cc	N/A	Exports the grade as a .cc (Color Correction) file.
mask	N/A	disabled	Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.
mask	maskChannelInput	none	The channel to use as a mask. By default, the colorspace conversion is limited to the non-black areas of this channel.
inject	inject	disabled	Copies the mask input to the predefined mask.a channel. Injecting the mask allows you to use the same mask further downstream.
invert	invert_mask	disabled	Inverts the use of the mask channel so that the colorspace conversion is limited to the non-white areas of the mask
fringe	fringe	disabled	When enabled, only apply the effect to the edge of the mask. When disabled, the effect is applied to the entire mask.
(un)premult by	N/A	disabled	Enables the associated channel to the right. Disabling this checkbox is the same as setting the channel to none.
(un)premult by	unpremult	none	The image is divided by this channel before being processed, and multiplied again afterwards. If you are using premultiplied input images, you may want to check (un)premult by and select rgba.alpha here. This will simulate doing the color conversion before the premultiplication was done. It is the same as adding an Unpremult node before this node and a Premult node after, but allows you to work faster if you’re only using one color correct node. If you are using unpremultiplied input images, you should leave this set to none.
invert	invert_unpremult	disabled	Inverts the use of the (un)premultiply channel.
mix	mix	1	Dissolves between the original image at 0 and the full colorspace conversion at 1.