Is there a link where you can see the known bugs? I couldn't seem to
find one on the Foundry's website.
Also... I've been busy as hell too so I haven't had time to do more
digging, but... I just had a realization... it may have had something to
do with the compositing math involved in resizing an image that was
being composited. I was having that issue when I was working on my
little short film "Twelve" and we were shrinking down an actor to make
him look like he was 12 inches tall. (it was a short comedy about the
dating woes of a twelve inch tall man)
The grey lines may have been a result of sub-pixel scaling... e.g.
having a scale of 2.3 instead of just whole numbers.
At least that's what my mind is vaguely recalling....
Hope that helps
--Jud
On 1/6/2012 8:12 AM, Colin Alway wrote:
Regarding horizontal lines in the output: a while ago I raised this
with the foundry and they were able to replicate it.
Bug #14599 if that's any help.
On 6 January 2012 15:05, Henrik Cednert <[email protected]
<mailto:[email protected]>> wrote:
Hey Jud
Cool. I will search some more for it. I was knee deep in shit/comp
when it hit me so I just had to get the shots out the door. =)
The Foundry can't replicate it so it seems like it's somewhat
computer dependent. I will try to remember to post the verdict
from support once we've gotten to the bottom to it. =)
Thanks again and have a nice weekend
On 2012-01-05 16 <tel:2012-01-05%2016>:32, Jud Pratt wrote:
I vaguely recall this coming down to some sort of internal
math issue
with compositing/feathering or something like that. A quick google
before hitting bed (long, long hours on a project under
deadline) didn't
turn up anything, but it took me considerable internet
searching the
first time around. I'm nearly 100% certain it was how the math was
computed though. Maybe that will ring some bells to someone
who can
remember the exact situation.
Sorry I couldn't be of more help... I'll be sure to post if I find
anything.
--Jud
On 1/4/2012 1:55 AM, Henrik Cednert wrote:
Seems like it didn't solve everything. Halve black similar
glitches
now, not by far as many though and I can just rerender
those frames. I
assume that would be caused by Scree Despot Black...
On 2012-01-04 09 <tel:2012-01-04%2009>:56, Henrik Cednert
wrote:
Hi again
I found what caused the issues I had. I have sent it
in to the support
with a screen recording and script. If any one want to
take a look in
the hunt of issues in their own script this is what I
sent in:
http://temp.irry.com/neo/mekaniken/thefoundry/Keylight_Fubar_RandomNoise.hcf.v1.rar
The workaround for the issues I had is:
For the horisontal randon gray solid line: Raise screen
softness to anything above 0.
For the random cross pattern horizontal lines:
Raise Screen Despot White to 1 or more
Cheers
On 2012-01-04 08 <tel:2012-01-04%2008>:04, Henrik
Cednert wrote:
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]>
<mailto:[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]>
<mailto:[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]>
<mailto:[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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Jack Binks, Product Manager
The Foundry, 1 Wardour Street, London, W1D 6PA, UK
Tel: +44 (0)20 7434 0449
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The Foundry Visionmongers Ltd.
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--
Henrik Cednert
cg artist | compositor | cto
MEKANIKEN POST PRODUCTION
www.mekaniken.se <http://www.mekaniken.se>
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