http://forums.cgsociety.org CGTalk, the CGSociety's official forum for digital artists 120 en-us http://forums.cgsociety.org/showthread.php?t=1107410 Posted By: Geuse
Post Time: 05-16-2013 at 10:02 PM
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Hi. I'm using nuke 7.0v6.
As I'm a total noob since yesterday I'd like to know how I can improve the key of this sequence that I found on the net.
There's some spill as you can see which I'd like to remove and also in the shadows at the feet. Overall it's a bit happening with the pixels and I guess since it's not in HD I have to live with some of the artifacts. I'm planning on render out some cameramove taking you to a box that opens to reveal the cat so I can hide parts of the cat as I need. That's the idea anyway.

What do you think of the camera track? I'm about to learn how to export it to maya. Seems to need to use a script, but I've understood I need to connect a camera to the track aswell. Anyone care to elaborate on that?

I've followed along in some youtube tutorials, but also planning on doing one of those massive projects like Eat3D has, but it would be cool in the meantime to understand the program and try out some easier tasks before jumping in full on.

Here is the images and my nuke file. Hopefully it should work for you?

Thanks for looking!]]> Thu, 16 May 2013 17:02:47 +0000 http://forums.cgsociety.org/showthread.php?t=1107110 Posted By: Loght
Post Time: 05-15-2013 at 05:21 AM
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Hello everyone!

I'm currently researching workflows for a short which will include quite a lot of VFX.

I want to be able to keep the camera rotations from the real world (if I'm facing north, south,...) throughout all the shots so they will match up with the digital set. I've been trying to find existing procedures on this, i.e. keep a reference object (triangle?) on the ground which nuke could identify the rotation of. But I can't seem to find anything like this, so I would love to hear any thoughts on this!

regards
Loght]]> Wed, 15 May 2013 00:21:50 +0000 http://forums.cgsociety.org/showthread.php?t=1106628 Posted By: ThreeDSnack
Post Time: 05-11-2013 at 11:54 AM
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I import my After effects sequence into Nuke for undistortion, and when exporting the sequence write out will start with 09000, which later on Maya doesn't like (Maya seems to read sequences only starting at 0). How can I change my Nuke settings so that when I export my sequence it starts at "0"?]]> Sat, 11 May 2013 06:54:55 +0000 http://forums.cgsociety.org/showthread.php?t=1106525 Posted By: EnderWright
Post Time: 05-10-2013 at 08:59 PM
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What is the process and most accurate way to undistort and shot in Nuke that has an animated zoom (changing focal length)?
My initial thought is to use the image analysis because I have no idea how you would combine grids when you don't know how the change is taking place. Does Nuke calculate the focal length change?]]> Fri, 10 May 2013 15:59:00 +0000 http://forums.cgsociety.org/showthread.php?t=1106419 Posted By: JamesNZ
Post Time: 05-10-2013 at 05:04 AM
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Hi everyone,
How can I add compression artifacts in Nuke? I need to add them so my CG render will match the live-action plate

Thanks,
JamesNZ]]> Fri, 10 May 2013 00:04:41 +0000 http://forums.cgsociety.org/showthread.php?t=1106172 Posted By: ludvigholmkvist
Post Time: 05-08-2013 at 01:43 PM
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Hello!

I don't know if this is the right place to ask this but I'll give a shot...

I have one, possibly, simple question for you. I am new to the world of python/tcl-scripting so go easy on me.

I want to create a gizmo containing two knobs: one filename-knob and one button. In the filename-knob I want to be able to fill in a path to which I want to save my script, this is of course easy. And as I press the button I want the script to be saved to the path and the value of my filename-knob which contains not only the path but also the scriptname along with the extension .nk. Is this possible, if so how do I fullfill my needs and my goals in life?]]> Wed, 08 May 2013 08:43:03 +0000 http://forums.cgsociety.org/showthread.php?t=1106167 Posted By: Emily671
Post Time: 05-08-2013 at 12:50 PM
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Hi

I have about 100 rendered images from Maya Depth pass with .iff format.
If I don't use .iff, the depth pass won't show up. There will be just black and white image. So, I only can render those in .iff format atm.
Those images with .iff format look fine when I open it using fcheck. However, they were all black-out in Nuke. I tried to adjust the exposure value, but there is nothing... I don't know how to fix this issue..
is it just a display issue? or is .iff not well compatible with Nuke?]]> Wed, 08 May 2013 07:50:00 +0000 http://forums.cgsociety.org/showthread.php?t=1105210 Posted By: pseudopod
Post Time: 05-02-2013 at 06:27 AM
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Hello,

I have a nuke script that keeps crashing.

It is a 3D scene using planes etc.

For some reason every time I open up the camera settings or open up a node connected to a scene with the 3d camera, scene file crashes.

I've rebuilt each element, and plugged them in one by one. But only when I attach the camera to the scene, and as soon as I open up a node, Nuke crashes.

Any idea what could be going wrong?

Please help.]]> Thu, 02 May 2013 01:27:42 +0000 http://forums.cgsociety.org/showthread.php?t=1102923 Posted By: GreenGuy
Post Time: 04-14-2013 at 02:38 PM
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Hello,
I am experiencing something strange with my particle simulation in Nuke. I am doing some rain by emitting particles from top to bottom and the blurring them vertically. The problem is, that a black horizontal line appears once in a while. Does somebody know how to fix this?

Regards,

Sascha]]> Sun, 14 Apr 2013 09:38:04 +0000 http://forums.cgsociety.org/showthread.php?t=1102304 Posted By: DEVILSAN
Post Time: 04-10-2013 at 05:26 AM
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Why do I get error saying 'NoneType Object has no attribute rfind' when i create a DeepRead node with
this error message is on the label of the node and in terminal..... neither in script editor...]]> Wed, 10 Apr 2013 00:26:49 +0000 http://forums.cgsociety.org/showthread.php?t=1102060 Posted By: DEVILSAN
Post Time: 04-08-2013 at 05:10 PM
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i am reading nodes inside group and want to pop out the write node

but the problem is when i try to create node the nodename contains data related to attributes and its values but not the node name

output i get is
]]> Mon, 08 Apr 2013 12:10:48 +0000 http://forums.cgsociety.org/showthread.php?t=1101651 Posted By: shadowst17
Post Time: 04-05-2013 at 08:19 PM
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Hello, I've just started learning how to use Nuke and decided to try out Nuke Tracking, but how would i go about importing the point cloud and camera into 3DS MAX? I've looked online but there are very cryptic and are usually referring to Maya. I've tried exporting use a Write GEo but that only exported the camera, which doesn't work very well as it doesn't move about and flips over half way through the frames, it also didn't import the point cloud with the camera either.]]> Fri, 05 Apr 2013 15:19:21 +0000 http://forums.cgsociety.org/showthread.php?t=1099974 Posted By: Zwergnase
Post Time: 03-25-2013 at 09:34 PM
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I have sequence where a camera is moving through a corridor,,
At a point of time it is passing a door...
I got a keyed actor who will come out of that door
How can i control the moment the greenscreen clip starts playing at a certain point in timeline?
In after effects i just need to position thr greenscreenclip at my point of choice in the timeline,,
Howbdo do that inside nuke?]]> Mon, 25 Mar 2013 16:34:16 +0000 http://forums.cgsociety.org/showthread.php?t=1099332 Posted By: Zwergnase
Post Time: 03-21-2013 at 02:02 PM
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Hi
I got a greenscreen footage with a actor and camera movement..
I tracked the footage with pftrack and brought it ito nuke
Now i am starting with mattepainting and creating an enviroment...
Now for the problem...
Is it better to merge the keyed actor at the end over my 3d enviroment,,what i am doing atm
And the track is stable,,,or is the workflow to put the greenscreened actor on a card?
I tried that,,but then the actor stays not perfectly on the floor and jumping a bit]]> Thu, 21 Mar 2013 09:02:42 +0000 http://forums.cgsociety.org/showthread.php?t=1099319 Posted By: AlexCern
Post Time: 03-21-2013 at 12:02 PM
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Hi everyone,

i'm having an issue rendering zDefocus node. While rendering outputs CPU is loaded 20-25% with zDefocus node enabled. If I switch it off or replace with just Defocus, CPU loads to 100% and renders are about 10 times quicker. I'v tried switching use GPU in node off - it doesn't help. Dose anyone has the same issue? Is there --gpu Argument to switch GPU render off while output rendering?

Thanks.]]> Thu, 21 Mar 2013 07:02:01 +0000