Hello
I'm having problems with the vector blur... I'd better give you an example:
set cut_paste_input [stack 0]
version 5.1500
push $cut_paste_input
Camera2 {
translate {0 -0.6 12}
name Camera1
selected true
xpos -176
ypos 54
}
CheckerBoard2 {
inputs 0
boxsize 32
linecolor 0
centerlinewidth 0
name CheckerBoard1
selected true
xpos -91
ypos -145
}
Sphere {
translate {{curve i x1 -1 x15 2.085000038} {curve i x1 0.1449999958 x15 -1.25} 0}
name Sphere1
selected true
xpos -91
ypos -71
}
Constant {
inputs 0
color {0.306409 0.400095 0.5 1}
name Constant1
selected true
xpos -191
ypos -87
}
Card2 {
translate {-2.19 -0.6 -1.144}
scaling {1 1.3 1}
uniform_scale 5.2
control_points {3 3 3 6
1 {-0.5 -0.5 0} 0 {0.166667 0 0} 0 {0 0 0} 0 {0 0.166667 0} 0 {0 0 0} 0 {0 0 0}
1 {0 -0.5 0} 0 {0.166667 0 0} 0 {-0.166667 0 0} 0 {0 0.166667 0} 0 {0 0 0} 0 {0.5 0 0}
1 {0.5 -0.5 0} 0 {0 0 0} 0 {-0.166667 0 0} 0 {0 0.166667 0} 0 {0 0 0} 0 {1 0 0}
1 {-0.5 0 0} 0 {0.166667 0 0} 0 {0 0 0} 0 {0 0.166667 0} 0 {0 -0.166667 0} 0 {0 0.5 0}
1 {0 0 0} 0 {0.166667 0 0} 0 {-0.166667 0 0} 0 {0 0.166667 0} 0 {0 -0.166667 0} 0 {0.5 0.5 0}
1 {0.5 0 0} 0 {0 0 0} 0 {-0.166667 0 0} 0 {0 0.166667 0} 0 {0 -0.166667 0} 0 {1 0.5 0}
1 {-0.5 0.5 0} 0 {0.166667 0 0} 0 {0 0 0} 0 {0 0 0} 0 {0 -0.166667 0} 0 {0 1 0}
1 {0 0.5 0} 0 {0.166667 0 0} 0 {-0.166667 0 0} 0 {0 0 0} 0 {0 -0.166667 0} 0 {0.5 1 0}
1 {0.5 0.5 0} 0 {0 0 0} 0 {-0.166667 0 0} 0 {0 0 0} 0 {0 -0.166667 0} 0 {1 1 0} }
name Card1
selected true
xpos -191
ypos -13
}
Scene {
inputs 2
name Scene1
selected true
xpos -81
ypos -32
}
push 0
ScanlineRender {
inputs 3
name ScanlineRender1
selected true
xpos -91
ypos 73
}
VectorBlur {
uv forward
constant {-0.498039 -0.498039}
scale 3
method forward
alpha rgba.alpha
name VectorBlur1
selected true
xpos -91
ypos 152
}
if you go at frame 7, you'll clearly see that the edges are soft and nice on the right side, while on the left the edge is jagged and wrong.
I know, a solution could be to render the sphere separately, but that's not always possible, think about particles going everywhere, or simply a character waving a hand in front of his body.
I'm sure there's something bleeding obvious that I'm missing, please help me find it 
cheers
Fabio
