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Welcome to bosti's Wiki Tuesday, October 19 2021 @ 01:49 AM CEST

Retime a 3D camera and a 2D Source in Nuke

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It can be complex to have a source plate that is matchmoved and then have a retime or timewarp on the material. This can be done quote easy like this...

Nuke and Arri Alexa C-Log Colorspace

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Nuke
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So you are wondering about the wonky way Nuke loads in Alexa material. I must say, I either do not fully understand how Nuke does XXX - > Linear conversions or some are conversions are buggy/not consistent. To clarify this - for example sRGB to LIN and Rec709 to LIN do a colorspace, whitepoint and primaries conversion where if you select Alexa in your Read nodes it will only do a colorspace conversion, hence the reason it all looks pale as hell. Read on for the solution...

Installing The Foundry NUKE on Windows machines remotely

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Nuke
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To install The Foundry NUKE on all your machines on the windows farm/workstations you can download the MS tool PSEXEC (see Links section) and use this from the command-line. Mind the CASES. Error code 0 is the message for a clean install. 

"psexec \\MACHINE -u USERNAME -p PASSWORD \\SERVER\pipeline\software\nuke\Nuke9.0v2-win-x86-release-64.exe /verysilent"

You might want to set a shared config directory by setting an environment variable like this:

setx /m NUKE_PATH "N:\pipeline\nuke
 
All your gizmos, python and shizzle will be pointed there.
You can set all this in a batch file. Read on for an example batchfile which doesn't store the password inside the batchfile (for improved security). 

If you don't want these 10 icons The Foundry installs on your desktop add this parameter /MERGETASKS="!desktopicon"

Match a patch to a flickering plate with Nuke's CurveTool

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Nuke
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When you need to patch a plate in which the light is flickering, Nuke's CurveTool can come in quite handy.

Random Transform Node (handheld)

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Nuke
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 Copy Paste this code for a random XF node.

set cut_paste_input [stack 0]
version 8.0 v4
push $cut_paste_input
Transform {
translate {{maxVal-(random((frame+10000)*freqVal)*(maxVal-minVal))} {maxVal-(random(frame*freqVal)*(maxVal-minVal))}}
center {1024 540}
name Transform3
selected true
xpos -498
ypos 38
addUserKnob {20 User}
addUserKnob {7 minVal R -100 100}
minVal -50
addUserKnob {7 maxVal R -100 100}
maxVal 50
addUserKnob {7 freqVal}
freqVal 0.005
}

Search and Replace filepaths within a script

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Nuke
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 To Search and replace within a Nuke script select all your nodes and press 'CTRL SHIFT /'

Remove Flicker from a locked shot

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Nuke
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 To remove flicker from a locked plate you can try the FrameBlend node to even out the flicker (and also noise, so dont forget to renoise). There is also a more advanced method that is very effective even with some movement. Read On...

Nuke bug: Non-existent channel used for mask

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Nuke
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 For unknown reasons sometimes comps start to behave awkwardly. 

Random image from read node using TCL

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Nuke
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 To pick a random image from a read node create a FrameHold and right click on the frist frame label and select 'Edit Expression' then type 'floor(1+100*random())' to pick a random frame between 1 and 100.

TCL Flicker node

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Nuke
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 Simple TCL Example script that will create a flicker node (like from a projector or fluerescent light source)snipplr.com/view.php

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