Intro to UnrealReader - Nuke 13.2
Learn all about how to use Foundry's new UnrealReader node in Nuke 13.2. This amazing tool allows you to sync up Unreal Engine 5 or UE4 directly with Nuke X, Nuke Studio, Nuke Indie and Nuke Non-Commercial. In order to render out render passes such as z-depth, world position, world normals, base color, lighting, stencil layers, etc. It's an amazing tool with everything in the right place to make your life a whole lot easier when it comes to working with any renders coming out of Unreal.
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Nuke Server Plugin: https://www.foundry.com/products/nuke...
Request Linux dev build through Foundry Support: https://support.foundry.com/hc/en-us
FAQ:
Q: Question
A: Answer
Q: I switch to a different Map and Nuke just hangs for a long time, and then finally renders an image
A: This could be because the shaders are still building in the map you’re trying to access from the UE project. If this is the case, switch to UE and you’ll likely see the Movie Render Queue rendering window showing a message along the lines of “building shaders”.
Q: Some elements in my render (like smoke and sparks) look different to what is shown in UE’s viewport, and also change if I alter a UnrealReader setting on the same frame?
A: Some of the physics/emitters in UE are non-deterministic (and may not have an option to be made deterministic), so individual renders from UnrealReader may not match. This can also apply to motion blur, or any post process items that use temporal / spatial samples.
When using the UnrealReader node Write section render option to render the whole Sequence out to EXRs, the problem should not exist and the elements should be temporally correct.
Q: I’ve created a new Camera in a level sequence using either the + Track button / right-click-on-left-area-of-panel - Actor to Sequencer, but in Nuke the UnrealReader doesn’t seem to render the correct thing, and the Camera tab shows 0,0,0 for the transform and rotation data (with no animation)?
A: This is likely caused by a UE Level Sequence issue whereby adding a camera using this method to an existing Camera Cuts track will not bind the camera to that Camera Cuts track, even if the name of the camera is the same as the one you had before (and perhaps deleted).
You need to click on the Camera Cuts + Camera button and rebind the camera you’ve just added.
If there is no Camera Cut track to start with, then UE will do it correctly and bind it on creation, so there won’t be any issues as mentioned above
Q: When I add a UnrealReader node initially it hangs Nuke for about a minute, then finally connects (beach ball on Mac, blue spinner on Windows)
A: This can be one of two things. From experience when this has occurred, it tends to be that the port number being used has had some form of issue. First try changing to a new port in both Nuke and Unreal. If a new port fails, restart your computer to try and clean up the ports.
It can also be due to the number of Maps/Sequences in a UE project being very large, which can mean a lot of data to read. We have seen this in the Matrix City scene released with UE5.
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Timestamps:
00:00 - Intro
02:04 - CG Spectrum
02:52 - Necessary Plugin - Nuke Server
04:05 - Nuke Server setup in Unreal Engine
05:07 - UnrealReader node in Nuke
08:11 - Addressing Possible Colorspace Issues
11:20 - Picking Stencil Layers
12:55 - Render Layers
13:15 - Advanced Tab - Movie Render Queue Settings
14:25 - Cameras
17:23 - Writing Renders to Disk
20:36 - Outro & Thanks
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