Vector Blur: OLD vs NEW

Useful Links

• http://learn.foundry.com/nuke/11.1/content/reference_guide/filter_nodes/vectorblur.html?cshid=VectorBlur2
• http://learn.foundry.com/nuke/11.1/content/comp_environment/3d_compositing/adding_motion_blur_vectorblur.html
• http://www.youtube.com/watch?v=8WJjqGDGddI

NODES

• OLD node (NUKE 9)

Copy and Paste directly in Nuke. This is the default node in Nuke 9.

set cut_paste_input [stack 0]
version 9.0 v4
push $cut_paste_input
VectorBlur {
 name VectorBlur2
 selected true
 xpos -285
 ypos -18
}

These are the properties:

• NEW node (NUKE 10)

Copy and Paste directly in Nuke. This is the default node in Nuke 10.

set cut_paste_input [stack 0]
version 10.5 v2
push $cut_paste_input
VectorBlur2 {
 name VectorBlur1
 selected true
 xpos -464
 ypos -91
}

These are the properties:

Comparison

In this example we see all the differences between the two Vector Blur nodes. First of all, copy and paste this script into Nuke, or download the .nk file.

As you can see in the previous script, I applied the same transformation to the plate (from 0 to 800 on the x axis), moving the image out of the format. Then, with the MotionBlur node, I create the motion vectors.
Finally, the 2 VectorBlur nodes apply the motion blur to the image. With the last Transform node I move the image back. Look at frame 7.

Download Examples

Click here: show/hide Script for Nuke

set cut_paste_input [stack 0]
version 10.5 v2
Read {
 inputs 0
 file /Users/gere/Desktop/img.png
 format "1920 1080 0 0 1920 1080 1 HD_1080"
 origset true
 name Read2
 selected true
 xpos 69
 ypos -191
}
Transform {
 translate {{curve x1 0 x10 800} {curve x1 0}}
 center {1024 778}
 name Transform1
 selected true
 xpos 69
 ypos -57
}
Dot {
 name Dot1
 selected true
 xpos 103
 ypos -22
}
set N1d7e12a0 [stack 0]
push $N1d7e12a0
MotionBlur2D {
 inputs 2
 name MotionBlur2D1
 selected true
 xpos 69
 ypos 29
}
set N1d7e3990 [stack 0]
Dot {
 name Dot3
 selected true
 xpos -24
 ypos 32
}
VectorBlur {
 uv motion
 name VectorBlur_OLD
 selected true
 xpos -58
 ypos 96
}
Transform {
 translate {-533.3333356 0}
 center {1024 778}
 name Transform2
 selected true
 xpos -58
 ypos 186
}
push $N1d7e3990
Dot {
 name Dot2
 selected true
 xpos 231
 ypos 32
}
VectorBlur2 {
 useGPUIfAvailable false
 uv motion
 scale 1
 soft_lines true
 normalize false
 name VectorBlur_NEW
 selected true
 xpos 197
 ypos 95
}
Transform {
 translate {-533.3333356 0}
 center {1024 778}
 name Transform3
 selected true
 xpos 197
 ypos 185
}

I used the same settings in both nodes. As you can see, the result of the old node is too strong and looks fake, but it has one advantage, the bounding box: the old VectorBlur keeps the original BBox without cropping the image, unlike the new node.
So, if you need this feature, use the VectorBlur from Nuke 9.