Create camera (nodal pan/tilt) from 2D track-point?

Anyone know a way to translate a x/y position track-point to a camera move (camera orientation?) I have a plate with a pan/tilt move and I want to track in the bg, but instead of just translating the bg, I would like to put it on a shpere and have the camera pan to get a bit of distortion happening. Would be useful in other scenarios as well. This is for when you don’t need to 3D track your camera.

xdcam hd422 drop data rate when render out from Nuke

Hi, i got a clip , it’s a .mov code : xdcam hd422 1080p24 shoot on panasonic af100. If previewing this clip in quicktime player, i can see in the info window, it has data rate about 100Mbit/s and size : 288 mb. So i read the clip inside Nuke and directly apply the write node, set to the same codec and fps. But after i render, i found the data rate has been dropped to about 50Mbit/s and the filesize also dropped about half of the original size (140mb). It looks like the data/quaility has been reduced ??? Is there anyway i can keep the datarate so it won’t dropped when rendering out of Nuke. I couldn’t find any option to do it.

Thanx

Lens Distortion – PFTrack to Nuke

Hi,
I’ve just finished tracking a shot in PFTrack and have exported it as a Nuke Python file. Everything imports perfectly into Nuke, I also exported the undistorted plate from PFTrack too, so things are lining up nicely.

My question is, how on earth do I re-distort the final output? I’d normally track and un-distort everything entirely inside Nuke, so I’d simply reapply the same lens distortion node at the end of my tree.

I’ve just no idea how to transfer the low order distortion information from PFTrack to Nuke?

I’d be over the moon if anyone could shed some light on this for me.

Thanks in advance.
Chaz

aa problems with mat IDs

i have some aliasing problems with material IDs…
id like to change the color of these blue ball to green…
but get allways artefacts on the edges…

whats the best way to do that..?

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Motion blur steps with motion vectors

I’m not sure if this even possible in Nuke
I’m using motion vectors out of Maya
mental ray has a motion blur option called “motion steps”
It’s very useful when rendering something like plane rotating blades.
In nuke with the motion vectors I can’t not get these steps to appear?

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nuke and render manager – ideal file management workflow

Hi, i’m doing some test using Primefocus Deadline as Nuke’s render manager. If any of you have any experiences on this matter , pls share with me 🙂 , well this is not specific to Deadline but about general file manegement when doing distributed rendering +Nuke .This is my first trial using renderfarm with nuke.

So using deadline, it’s recommended to place the render output into a server. i got a case where i have a very complex script, ussually i will ‘precomp’ at certain ‘checkpoint’ by rendering it out then read it back in and i’ll repeat this steps couple more times. Now, if i submit the project to rendermanager , the render output will be in server side. To deal with my precomp scenario, i need to copy back all the render result locally, so i can get the ‘speed’. This is a bit different compare to 3d animation, where the texture/map etc is not to critical when they have to be in the server, They’ll be needed when rendering. But in Nuke, all the read proccess is very intense, so frame by frame got read successively. So did u do copy all the render output from server back to local ? or u grab the clips directly from network which means you have a bloody fast server + lightning fast cabling.

Also how to deal with the relative path thing? do u convert all the path from all ‘read’ node into relative path or any other method ? so the render slave can get the correct path for all the media/clip etc??

Any suggestion will be great.

thanx.

What does VIEWER in this expression mean

viewer < 3 ? Card.rotation.x : 0

Thanks for the help.

Corrupt project. Retrievable?

Hello all,
I have a project that got corrupted and the previous incremement had far less roto work than the current one (yes, slap on the wrist for not saving more frequently). Now as much as I would LOVE to do it all again I’m afraid the enjoyment would be too much so I want to see if I can retrieve.
I’ve had cases before where a corrupt project loses all data contained and reverts to 0kb but on this one it look like it’s all still there, but I get this message when opening:
missing close-bracket

Or if I try to restore autosaved it ‘opens’ the project but nothing is loaded just the name of the project.

Any suggestions on a way to hack it or anything related would be appreciated.

Thanks
Andrew

The Foundry Stereo Whitepaper

The foundry have released a stereo white paper. From a quick glance it seems to be quite comprehensive in covering the common problems associated with Stereo.

http://www.cgw.com/documents/pdfs/st…nt-foundry.pdf

Cant delete nodes in Nuke

Hi,

Im just starting out in Nuke and seem to be getting the basics down ok for now, but one thing is driving me crazy. Everytime I try and delete a node I get the following message…

dependent() takes at most 1 argument (2 given)

Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:/Program Files/Nuke6.2v4/plugins\nukescripts\nodes.py\", line 25, in node_delete
d = nuke.dependentNodes(nuke.EXPRESSIONS | nuke.HIDDEN_INPUTS, nuke.selectedNodes(), False)
File "C:/Program Files/Nuke6.2v4/plugins\nuke\overrides.py", line 104, in dependentNodes
for i in nodes: deps += i.dependent(what, forceEvaluate = evaluateAll)
TypeError: dependent() takes at most 1 argument (2 given)

I dont really know how the scripts work, so the information above is not helping me.

I’ve searched forums and the user guide and all I find is press delete to delete nodes or from the files menu… Neither way is working for me and all I get is the above message.

As I am just starting out in Nuke Im trying new things and I want to delete nodes to keep what Im doing nice and tidy. Things quickly get messy when I can delete any nodes. this happens with image read nodes, and effect nodes. Seems to be any type of node.

Anyone know why Im getting this message and how I can fix it?

Im using NukeX 6.2v4 on Win7x64

Thanks.