ChannelMerge

Combine one channel of A and B.

raw .mdPress ? for keys

Node	ChannelMerge
Menu	Channel › ChannelMerge
Names in each format
.oink comp (JSON)	`"type": "OC_N_channelmerge"`
.nk script	`ChannelMerge` (how .nk import works)
Python	`nuke.createNode("ChannelMerge")`
Assistant (MCP)	`create_node(type="ChannelMerge")`
Tab search	`channelmerge`, or its initials `cm`

ChannelMerge properties

Inputs and outputs

Port	Name	Type
input 0	B	image
input 1	A	image
input 2	mask	image
output 0	Image	image

Knobs

Panel tab Channelmerge, in panel order.

Knob	Label	Type	Default	Range / values	.nk knob	Description
`A`	A	text	`rgba.alpha`		`A`
`operation`	operation	menu	`union`	union, absminus, b if not a, divide, from, in, max, min, minus, multiply, out, plus, stencil, xor	`operation`
`B`	B	text	`rgba.alpha`		`B`
`output`	output	text	`rgba.alpha`		`output`
`bbox`	Set BBox to	menu	`union`	union, B side, A side	`bbox`
`mask_channel`	mask	menu	`none`	none, rgba.alpha, rgba.red, rgba.green, rgba.blue		Mask channel (a linked mask input with none uses rgba.alpha)
`invert_mask`	invert	bool	`false`		`invert_mask`
`mix`	mix	float	`1`	0 to 1	`mix`

Other knobs (Python, .nk and the assistant; not on the panel)

Knob	Label	Type	Default	Range / values	.nk knob	Description
`gl_color`	Viewer Controls Color	float ×3	`0, 0, 0`	0 to 1
`postage_stamp_frame`	Static Frame	int	`1`	-2147483648 to 2147483647
`lifetimeStart`	Lifetime Start	int	`0`	-2147483648 to 2147483647
`lifetimeEnd`	Lifetime End	int	`100`	-2147483648 to 2147483647
`useLifetime`	Use Lifetime	boolean	`false`
`cached`	Cached	boolean	`false`
`bookmark`	Bookmark	boolean	`false`
`dope_sheet`	Dope Sheet	boolean	`false`
`clone_group`	Clone Group	string
`link_source`	Link Source	string
`link_overrides`	Link Overrides	string
`split_views`	Split Views	string

Copy

Copy channels from A into the B stream.

Remove

Remove or keep channels / layers.

On this page

Inputs and outputs Knobs Other knobs (Python, .nk and the assistant; not on the panel)