Morning peeps
I have something here in NukeX 6.3v6 that might be related to the same
bug. One would have hoped that it would have been fixed by now. =( I can
reproduce the gray line described here but my main issue is horizontal
lines of crosses, looks like this:
http://piclair.com/data/llr8m.jpg
HAve anyone seen something similar? Solution/workaround? It's totally
random and appears on different frames and different locations when
re-rendering and seems to be computer dependent too.
No matter what I change in the keylight node it disappear on the frame I
currently view but it randomly appears on other frames...
Cheers and thanks
On 2010-06-02 18:17, Jose Fernandez wrote:
I have also seen this happen with keylight, it seems very random, and is
sometimes fixed by cropping the inputs in some way...
On Wed, Jun 2, 2010 at 6:40 AM, Jack Binks <[email protected]
<mailto:[email protected]>> wrote:
Hey Kurt
Thanks for letting us know. Sounds to me like it may be a tiling
issue. Pending the support guys getting back to you, as a test, do
you find it happens if you use a 500x500 constant?
Nuke splits up frames over a certain size into multiple tiles to
feed to OFX plug-ins, to reduce memory usage and speed things up vs
having large image buffers hanging around. If parts of the OFX
wrapped algorithm are attempting to access parts of the image
outside of the tile, without requesting it properly (such as I'm
guess the softness is doing) then you'll see this sort of thing were
black is getting brought in along the edge of such tiles. If other
people are getting these kind of artefacts, and they're not related
to the softness param, see if you can locate which knob it is which
is causing their introduction, and let the support chaps know.
Guessing you're probably combining the keylight matte with a bunch
of other mattes to pull your key before merging, so as a workaround,
soften the matte as a post process to Keylight and you should be
good to go.
Cheers
Jack
Kurt Lawson wrote:
I had just the image and then keylight. To eliminate some weird
problem with the footage I just connected a black constant to the
keylight node to eliminate the footage as problem. The result was
a white alpha - except for the lines. Seems like another bug I've
found. I sent it to the Foundry to see what they say.
Here is the keylight in question. When I take screen softening to
0 the lines disappear.
set cut_paste_input [stack 0]
version 6.0 v3
Constant {
inputs 0
channels rgb
name Constant2
selected true
xpos -269
ypos -40
}
OFXuk.co.thefoundry.keylight.keylight_v201 {
show "Final Result"
unPreMultiply false
screenColour {0.2389999926 0.3689999878 0.1209999993}
screenGain 1
screenBalance 0.5
alphaBias {0.5 0.5 0.5}
despillBias {0.5 0.5 0.5}
gangBiases true
preBlur 0
"Screen Matte" 1
screenClipMin 0.265
screenClipMax 0.945
screenClipRollback 0
screenGrowShrink -2
screenSoftness 1
screenDespotBlack 0
screenDespotWhite 0
screenReplaceMethod "Soft Colour"
screenReplaceColour {0.5 0.5 0.5}
Tuning 0
midPoint 0.5
lowGain 1
midGain 1
highGain 1
"Inside Mask" 0
sourceAlphaHandling Ignore
insideReplaceMethod "Soft Colour"
insideReplaceColour {0.5 0.5 0.5}
Crops 0
SourceXMethod Colour
SourceYMethod Colour
SourceEdgeColour 0
SourceCropL 0
SourceCropR 1
SourceCropB 0
SourceCropT 1
balanceSet true
insideComponent "Inverted Alpha"
outsideComponent None
cacheBreaker true
name Keylight3
selected true
xpos -269
ypos 115
}
On Jun 1, 2010, at 8:29 PM, Matthew Doll wrote:
Have you tried cropping with black outside or anything like that?
I know you said your example image was on a straight Constant
node so probably this is a moot question. But it sure looks like
a bounding box type of issue.
On Tue, Jun 1, 2010 at 5:54 PM, Sam Cuttriss
<[email protected] <mailto:[email protected]>> wrote:
perhaps its a software trinitron feature?
Kurt Lawson wrote:
Seems to go away if I turn off the screen softening
option. Turn it back on and poof, there they are.
-K
On Jun 1, 2010, at 5:46 PM, Nathan Rusch wrote:
I get those pretty frequently as well. I haven't
gotten around to reporting them yet, but I would
loooove to know where they come from.
6.0v3->6 x64 on Windows
-Nathan
*From:* [email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
[mailto:[email protected]
<mailto:[email protected]>]
*On Behalf Of *Kurt Lawson
*Sent:* Tuesday, June 01, 2010 5:23 PM
*To:* Nuke user discussion
*Subject:* [Nuke-users] Keylight producing faint grey
horizontal lines? Sometimes strange rectangular patterns
Keylight is giving me some strange, static
horizontal lines like shown in this image of a key of
a black constant (you'll probably have to look at the
frame full size)
http://kurtlawson.com/nuke/keylightwtf.png
Any ideas what might be the cause of this or how to
fix it? I'm running 6.0v3 on OSX
-K
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