MotionBlur

Realistic motion blur worked out from the motion in the clip itself (Kronos' motion estimation): Shutter Samples in-between images over Shutter Time frames, averaged.

Realistic motion blur worked out from the motion in the clip itself (Kronos' motion estimation): Shutter Samples in-between images over Shutter Time frames, averaged. Vector Detail sets how fine the motion is.

Node	MotionBlur
Menu	Filter › MotionBlur
Names in each format
.oink comp (JSON)	`"type": "OC_N_motionblur"`
.nk script	`MotionBlur` (how .nk import works)
Python	`nuke.createNode("MotionBlur")`
Assistant (MCP)	`create_node(type="MotionBlur")`
Tab search	`motionblur`, or its initials `mb`

MotionBlur properties

Inputs and outputs

Port	Name	Type
input 0	Source	image
output 0	Image	image

Knobs

Panel tab MotionBlur, in panel order.

Knob	Label	Type	Default	Range / values	.nk knob
`useGPUIfAvailable`	Use GPU if available	bool	`true`		`useGPUIfAvailable`
`shutter_samples`	Shutter Samples	float	`3`	1 to 64 (integer)	`shutterSamples`
`shutter_time`	Shutter Time	float	`0.75`	0 to 2	`shutterTime`
`motion_estimation`	Method	menu	`Regularized`	Local, Regularized	`motionEstimation`
`vector_detail`	Vector Detail	float	`0.2`	0.01 to 1	`vectorDetail`
`resample_type`	Resampling	menu	`Bilinear`	Bilinear, Lanczos4, Lanczos6	`resampleType`
`matte_channel`	Matte Channel	menu	`None`	None, Source Alpha, Source Inverted Alpha, Matte Luminance, Matte Inverted Luminance, Matte Alpha, Matte Inverted Alpha	`matteChannel`
`flow_model`	flow model	menu	`AUTO`	AUTO (Auto (by free GPU memory)), sea-raft-m (SEA-RAFT M), sea-raft-s (SEA-RAFT S)

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

Knob	Label	Type	Default	Range / values	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
`timing`	Timing	enum	`speed`	speed, input_speed, frame
`speed`	Output Speed	float	`0.5`	-4 to 4
`input_speed`	Input Speed	float	`0.5`	0.001 to 4
`source_frame`	Frame	float	`1`	-3.4028234663852886e+38 to 3.4028234663852886e+38
`use_input_range`	Input Range From Source	boolean	`true`		Input first/last and output first = the upstream clip's frame range
`input_first`	Input First	int	`1`	-2147483648 to 2147483647
`input_last`	Input Last	int	`100`	-2147483648 to 2147483647
`output_first`	Output First	int	`1`	-2147483648 to 2147483647	Output frame of the input's first frame (Nuke: the input first)
`channels`	Channels	enum	`all`	all, rgba
`method`	Method	enum	`motion`	nearest, blend, motion, rife
`use_input_vectors`	Use Input Vectors	boolean	`true`		Use the input's motion / occlusion layers when present (else run AI flow)
`strength`	Strength	float	`1.5`	0 to 5
`smoothness`	Smoothness	float	`0.5`	0 to 1
`auto_shutter_time`	Automatic Shutter Time	boolean	`false`
`output`	Output	enum	`Result`	Result, Matte, Foreground, Background
`flicker_compensation`	Flicker Compensation	boolean	`false`
`weight_red`	Weight Red	float	`0.3`	-3.4028234663852886e+38 to 3.4028234663852886e+38
`weight_green`	Weight Green	float	`0.6`	-3.4028234663852886e+38 to 3.4028234663852886e+38
`weight_blue`	Weight Blue	float	`0.1`	-3.4028234663852886e+38 to 3.4028234663852886e+38
`vector_spacing`	Vector Spacing	int	`20`	1 to 2147483647
`show_vectors`	Overlay Vectors	boolean	`false`

Knob names in .nk scripts

.nk knob	Knob here
`shutterSamples`	`shutter_samples`
`shutterTime`	`shutter_time`
`motionEstimation`	`motion_estimation`
`vectorDetail`	`vector_detail`
`resampleType`	`resample_type`
`matteChannel`	`matte_channel`

Other .nk knobs use the same name here. See .nk import.

MotionBlur

Inputs and outputsCopy Anchor Link

KnobsCopy Anchor Link

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

Knob names in .nk scriptsCopy Anchor Link

On this page

Inputs and outputs

Knobs

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

Knob names in .nk scripts