Questions tagged [compositing-nodes]

Questions related to compositing nodes available for compositing render layers into final renders in the compositor.

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How to remove pixel with an RGB value of 1,1,1?

Is there a node that would allow me to specifically remove pixels that have a 1,1,1 RGB value? Not looking for a ColorRamp, rather something that specifically targets the pixels by RGB value. Maybe a ...
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2 votes
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16 views

Formulas used in compositor Mix node?

I'm trying to understand how the fac and clamp values are used in Mix compositor node: E.g. ...
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Anyone know why I'm getting crazy noise around edges of cryptomatte in after effects? [closed]

Exporting as multilayer EXR half float, dwaa compression at 1080p. Importing into after effects using cryptomatte plugin and selecting the matte in there.
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How to improve transparent image (filtering) edge quality in Compositor?

In Blender 3.2 I use an Image with alpha channel as an input and I render it from the compositor. The result image has poor edge quality compared to the original image. Can I corret this issue with ...
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4 votes
2 answers
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How to make the Reed Richards's portal?

I was watching the Reed Richards portal scene from the Multiverse of Madness movie and I wonder how to make it inside Blender, do you have any thoughts? I tried using a voronoi texture and a noise ...
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How to separate objects from lighting when compositing in 2.8+?

I am familiar with the Render Layers of 2.79 and how to use one object to occlude another, and separate shadows etc from the objects that cast them. I would not call that old system intuitive, but I ...
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Driver alternative with python in nodes?

I have created a node group in a script. So that the Blur Node can be used on X and Y, I have inserted Driver. The problem is that the node cannot be duplicated, because the drivers in the duplicated ...
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White box Artifact appearing in render?

I am new to blender, and while I was following this blender tutorial: https://youtu.be/y0DMMwwdBaY At the 15-minute mark, we start using the compositing tab. For some reason, using this tab causes a ...
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Remove any pixels where the alpha value is not 1, compositor

I have a render output that gives me my desired output but I want to remove the alpha channel. I want either, the pixels that have an alpha value less than 1 to be completely transparent or completely ...
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13 views

How to add 2d styled brush effect to 3d model?

This is a 3d rock model, I compost it with a 2d background. I want to ask is there any way to add some 2d styled brush texture to this rock? Not too much, just a little bit to make the rock fit the ...
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1 vote
1 answer
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Composition isn't appearing on final animation render

When I render the frames, the composition does not appear until I update something in the workflow: So, when I render the entire animation, none of the frames is saving with the composition. What can ...
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1 answer
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Compositing effects does not show in render

I've been trying to render this animation, but the compositing "glow" effect does not show even after I apply the nodes. Can someone tell me how I could fix this problem? Or even better, ...
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call a group of compositing nodes and automatically connect them to the render layers

because I have the need to constantly call the render node into my scenes. I would like to automate the process of joining variants with the same name. or somehow celebrate them Ideally, of course, ...
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compositing nodes: adding image layers

I tried to put 1outline png on 1bg png with a multiply mode as in photoshop. The settings below don't seem work out correctly. How to set it correct? Thanks!
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2 votes
1 answer
37 views

Does "Hide Value" do anything on an Output socket? (Isn't it always hidden?)

This is a really simple question. I was just wondering if a node's Hide Value option has any effect at all when it's for an Output instead of an Input. (This is found in the Group tab when editing ...
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Fog without volumetrics or emission

i´m currently working on a movie and need dark fog in my scene. It has to look more smoky, so it can't be as bright. With Volumetrics, the image is unfortunately still too noisy, even at high sample ...
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  • 327
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2 answers
55 views

How to disable automatic inclusion of nodes into a node frame?

When putting a node near a frame node Blender will sometimes automatically include the node into the frame. I find that behavior to be quite annoying, is there a way to disable it?
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5 votes
1 answer
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How to duplicate all nodes within a node frame?

I often have to duplicate a node frame with all nodes within it. However when I just select the node frame and press Shift+D it only duplicates the node frame but not the nodes contained within it. Of ...
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2 votes
1 answer
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How to find background image's path ? (2.93)

I wrote a script based on Exiftool that reads RollAngle, PitchAngle, FocalLength, ImageWidth, ImageHeight and Timestamp #tags from a digital photography's EXIF data. It then matches Blender's camera X ...
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0 answers
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Weird glare effect

Whenever I attempt to implement glare in this planet scene, it creates odd effects as seen in the image. The black dot is a sphere with an emission material and the strength set to 1000. In front of ...
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1 vote
1 answer
16 views

Compositing - how to anchor a pre rendered layer to a motion track marker

I've nearly completed a Blender composite which has taken much longer than it should have. A lot of the problems have stemmed from the motion tracking not matching when the 3D work was done in Maya, ...
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0 answers
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How to preserve the Colors in my image sequence?

I rendered 2 separate image sequences and I'm trying to combine them equally. Like one on top of the other without loosing the quality or color of either. I want my fireball image sequence as the top ...
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1 answer
30 views

Adding film grain only to the CGI and not camera projection?

I have set up a camera projection of a street with buildings. Problem is the photo is way too grainy and my CG car looks too clean. So I need to match the grain on the car to the photo I'm using for ...
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1 vote
1 answer
25 views

Enable Shadow Catcher Pass in View Layer with Python

I am writing a script for compositing, which requires that the Render Layers node has the Shadow Catcher output (see image below). This can be done with the GUI by going into the View Layer and ...
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1 vote
1 answer
20 views

Replace video content within a Blender animation in Other Video Editors

I'm using blender to composite a video within a spinning glass rectangle. Is there anyway I can render out the animation from Blender and replace the video content within AE, but still keep all the ...
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Are there any ways to make texture overlay (moving texture) repeat animation and noise on the model?

Does everyone know the answer? I love making different art styles in a blender. I'd like to try to have the model character's moving texture like "Norman Rockwell's Doctor and Doll" from ...
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-1 votes
2 answers
32 views

Video Editor Change Resolution Still Crops Instead of Resize (3.1/3.2)

Changing the resolution crops the video instead of resize it. Im adding the image sequence via compositing node editor, there are no options to specify fitting or stretching. Sometimes i need to test ...
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0 votes
1 answer
21 views

Blender - Rendering Samples In Stages then Compositing

Apologies if this has been asked, I really couldn't find anything on it. Let's say I want to render a 7200-frame animation, and the goal is to have the final render be at a samples = 1000. However, ...
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0 answers
10 views

How to fix the keystone effect in compositor

Looking at the distort nodes, I can't wrap my head around any method to fix the keystone effect on the image below. Is there a "blender way" of achieving the same results as in photoshop?
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1 vote
1 answer
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Why isn't mask working - compositing

I don't understand Blender and how it operates. The following mask and compositing node tree "RH Scroll Door Frame RH" is set up exactly the same as the one above it (everything within the ...
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8 views

Output Resolution Increase Changes Composited Background to Black

I'm trying to render (in cycles, cuda) a single object (3m faces) with a ground plane (set to shadow catcher), both on separate render layers. My goal is to create a nice portfolio render with a solid ...
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11 views

Having compositor open affects workspace performance

For one of my blender projects, while "Use Nodes" is active, making any changes in the compositor (including changing the active frame) causes performance to plummet, and this is despite the ...
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1 answer
34 views

Compositing nodes, toon effect and glow

I am using the showed nodes to add a border effect to the final composition, the effect is fine everywhere but on the glow for the emission materials, on them, I see a dark border around the material ...
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1 vote
2 answers
68 views

Blender's invert node not working properly

What's wrong with Blender's invert node and how to make it work like in photoshop? I need to invert image like in photoshop, but blender don't want to do that I thought, that problem is in color ...
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0 votes
0 answers
28 views

Render Layers node does not have output for vector pass

I'm trying to render speed vectors along with image and depth. So, I've enabled 'vector pass' in View Layer Properties > Passes. However, in compositor, I'm not ...
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0 votes
1 answer
15 views

Compositing why is mask displaying white when subtracting from an image sequence

Why is this mask displaying white/grey, I suspect it's something to do with the mix node? The highlighted mask is doing its job by subtracting from the shutter image sequence but when I set the mix ...
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1 vote
2 answers
20 views

Is it possible to only render a small region for compositing?

I have a 4K render of a simulation. I would like to composite the time for each frame on top of this render. The time to be rendered is a very small region, so I'd like to just crop that region to ...
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3 votes
0 answers
49 views

How to use video's edited in the video sequence editor in the compositor

How do you use video's edited in the video sequence editor (VSE) in the compositor? Like is there a file-in node to input the output of the video editor into the compositor directly through the ...
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1 vote
0 answers
28 views

Blender render result not displying correctly [closed]

The actual rendered png shows nothing at this pixel(white circle), because alpha is 0. But Render result window still has some color visible(white circle).You can see its alpha value as well in this ...
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1 answer
33 views

Combine scenes: render do not combine

I try to combine two scenes with the compositing nodes interface. The first scene is some meshes in a dark-blue background and the second is a text in a transparent background. I combine them with ...
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  • 109
1 vote
1 answer
47 views

Masking not working in compositor or image editor

What am I doing wrong, where it states "RH" in the RH Alleyway compositor group, there is a wall which should cut off the white circular highlight, for testing purposes I have cut off the ...
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  • 45
0 votes
1 answer
45 views

Can anyone suggest procedural snow texture node or dynamic paint appearing on window?

I'm new when it comes to playing with texture node and dynamic paint. I'm not sure which one is better to make this. I wanted a to make a snow falling and sticking to a window. Like random dots of ...
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  • 125
2 votes
1 answer
24 views

Background color isn't changing

I'm using the compositing to change the background color from black to pink, but after all the configuration, the background doesn't change the color, I have tried with different nodes and nothing. I ...
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0 votes
0 answers
10 views

How to remove redundant mask layers from mask list

There are no masks within these lists (i have manually deleted the points on the masks), but their names still remain in the list, how do you delete them so they no longer show up on the drop down ...
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0 votes
0 answers
22 views

Compositing taking really long

I'm transitioning from Maya/Nuke to Blender for compositing, and I am having an issue with the render time of the compositing. I am using cryptomates and merging them using multiple "mix" ...
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0 answers
11 views

Compositing CG Shadow with Real Footage Shadows

First off, I am exceptionally inexperienced with Blender nodes. I will try my best to understand, but forgive any foolish questions I may ask! I have a project I'm working on for a friend where I have ...
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0 votes
0 answers
16 views

Subsurface Scattering on a proxy object

I have an object that has a very fine geometry. Now I would like to apply Subsurface Scattering, but since the object is made out of a lot of individual tubes, the Subsurface Scattering is not ...
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1 vote
0 answers
43 views

Python bpy 2.8 render directly to matrix/array

I'm new to working with both Blender and bpy, and I'm trying to render directly into Python. Best case, I could render directly from bpy 2.82 into a byte stream or numpy matrix. I've been trying to ...
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  • 11
0 votes
1 answer
14 views

How can color and alpha channels differ in the Image Editor?

I'm rendering with composition, my goal is to isolate an object, its shadow, its reflection and the background in order to be able to adjust the background image/color, and the intensity of the shadow ...
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0 votes
1 answer
15 views

Adding depth of field to Individual passes i.e Emission, Ambient Occlusion, mist, etc?

So I've been using the built in depth of field in blender more on my renders, however I notice this isn't transferred over to any of my passes, making it harder for me in my compositing stage. I've ...
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