Questions tagged [compositor]

Questions pertaining to Blenders internal image compositor. The compositor is used for manipulating the final result after rendering.

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8 views

I can't get nodes to work, wondering if it's a glitch or I'm doing something wrong

I can get nodes in Blender to display the image/movie clip I'm trying to display in the backdrop and it plays when I press the play button, but there's no sound and it doesn't display in the preview. ...
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2answers
26 views

Cryptomatte Pick isn't working. What have I forgotten?

Blender 2.81, 2.81a Windows 10, 2xGTX1080 GPUs, GPU rendering I've been through the Manual and a few tutorials, but I guess I'm missing something. Why can't I get the Cryptomatte Pick working? Is ...
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4 views

Mask in compositing workspace makes video B&W

So, I've never really gotten masking in the compositing workspace and, I need to use it so, why when I add a mask onto a video, does it turn the video black and white? Check out the screenshot.
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12 views

Child object on different render layer?

I'm learning about compositing from an old pre-2.8x tutorial. The tutorial shows that an object parented to another object can be moved to a different view layer, which is then used by render layer to ...
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How to capture Depth data of smoke

So me and a few people we going to do something for a competition and for my part in this I need you get the smoke and objects depth data. So how should I do this?
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18 views

Why does alpha channel influence the color channel in node compositor?

I'm trying to swizzle an image using the compositor to generate a texture for a game. As you may know, it is common in Game Dev to have a different image per channel to optimise the texture loading ...
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2answers
25 views

How to achieve a “Photorealistic Camera”

I’m looking to recreate the same look that the Vray Renderer can make. Specifically with the RGB Split. I’ve tried using the Lens Distortion Node from the compositor and slightly upping the dispersion ...
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1answer
24 views

Viewer Node doesn't show up

So I am watching a tutorial and I am supposed to create a viewer node to connect it with a fresnel. I searched through the internet and everyone is saying that I only have to press Shift + Ctrl + LMB ...
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18 views

Can I render one layer with perspective camera and other layer with ortographic and compose both?

I have two layers: one has to be rendered with orthographic camera in order to not mess with proportions of objects and other layer has to be rendered with perspective camera. Any way to achieve this? ...
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1answer
24 views

How to change a specific colour in an image

I have an image with 3 colours I wan to take them out and change lets say blue to a different color I have image 3 colours Red, Green, and Blue. I want to turn Blue into a different colour. Current ...
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6 views

scene and camera tracking

how can get the same set up scene and layers that I get automatically with "set background" and "set track scene" in camera tracking? I try to explain better: when you use tracking point in Movie ...
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6 views

Compositing: Ho to scale compositing results to different image sizes?

I have a compositing and would like to save the image result to individual files by using different image sizes. Currently I only know the end size of an composting result is based in the scene ...
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1answer
43 views

Video editing: weird transparency blending with “Alpha Over”

I'm working on a video in the sequencer, and as part of this I want to overlay a scene containing some text. The text is rendered via node-based shading, and in particular uses a "clouds" texture to ...
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1answer
25 views

How to re-render specific view layers (2.80)?

I have a scene split into several view layers. they are rendered separately and then put together in the compositor. I would like to re-render only some specific view layers, not all of them. How can ...
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2answers
27 views

How do I properly use core matte to keep green section of shirt on using green screen keying?

I have some footage shot with a green screen and stupid me didn't pay attention to the shirt I had on which on the center of the shirt has some green. So naturally, I have a hole in my chest when ...
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1answer
29 views

Accidentally made backdrop viewer size zero. How to get it back?

I accidentally decreased the size of the viewer in the backdrop to zero. Now it displays as a small cross and I cannot reach the handles to enlarge it again. Does anyone know how to get it back, ...
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42 views

Could this kind of “inflating brain” effect be done in Blender compositor?

I would also need to adjust the strength and position of the effect.
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1answer
56 views

2.8 Can’t connect compositor nodes

having moved to Blender 2.8 I’ve gone to use the Compositor for the first time and then realised I can’t drag node connections from one node to another node. Like here… https://gph.is/g/E1qmpAD But ...
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7 views

Noisy image from fog/mist compositor?

I have an issue that I did not realise until it was too late. My rendered has too much noise created from I think the fog glow/mist_z/sun-ray compositor additions. How can I reduce the noise and ...
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9 views

What file format and setup for the “Vector Blur” node in compositing

Which file format I've to save for using vector data in a "Vector Blur" node in Blenders compositing? Currently I save the vector pass into a OpenEXR file, but the blur is always vertical and doesn't ...
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1answer
51 views

Compositor setting in Blender Internal: How to properly make a split RGB effect on further objects using Z?

I'm a blender amateur, I've learned it by myself, and I was trying to make a split RGB effect on the objects that are the further away from the camera. I tested it out with this simple scene: In the ...
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1answer
14 views

Use Multiple Image Editors in Compositor

I was looking into the compositor for the first time, but I came across something that is an issue. There seems to be no way to view multiple outputs from the node tree.Both image viewers just show ...
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17 views

How to compare 2 images to generate an alpha image

Let's say there's 2 rendering image A and B from same scene and same camera, how can I do this by compositor or script? compare image A and B turn the same part into an alpha and export to image C ...
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36 views

Can I mask objects using Cryptomatte in 2.8

I have 3 balls that are travelling down a pipe, I have a background image which I have aligned my pipe to a hole in the image. In order to make the balls appear as if they came from the hole in the ...
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18 views

How to composite shadow on different view layers?

I'm trying to learn how to do this to save on render times during animation in Blender 2.81. I want to use this on a project that will have moving characters, moving camera, etc. Everything works ...
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20 views

how to add mist in the 2.8 compositor?

I enabled the mist pass in my render settings then rendered via sheep it. however i have no mist settings on my image only a depth. and i cant seem to get the mist to appear
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How to disable word background transparency only for one View Layer on Eevee

Eevee doesn't have the Environment pass, so I'm looking for a solution to have one View Layer with the World background and another View layer with the background transparent to composite on top of ...
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1answer
36 views

Compositor Time Node Cap

Trying to set the end of my Time node to a big number but blender won't let me stopping at 32,767. After some suspicious poking it turns out that is also 2^15-1. Is this a bug in Blender or a ...
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25 views

Why is pure white output gray? [duplicate]

I'm trying to sequence frames into video, and I noticed all of my output is a bit darker than it should be. So I set up a pure white render through the compositor, and that's gray too. compositor ...
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20 views

Diffuse render pass looks different from original texture

I have tried to follow these instructions on how to get a diffuse render pass of a brick texture that exactly replicates the original colors of the texture. But even with all the settings in place I ...
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110 views

How to Use D-Noise in the Compositor?

Basically the question. Usually, I let Blender save some additional render passes (mostly ID masks) together with my main rendering for later, in-depth compositing. In the compositor, I pick the image,...
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33 views

Creating a BW (not grayscale) image from alpha - Blender 2.80

Community on StackExchange, I'm trying to get a black and white image from an image with an alpha-channel in the Eeevee renderer. alpha -> black rest -> white I used the alpha-channel from the ...
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8 views

compositer scale node translates image diagonally downwards

when I use the scale node it commonly also slightly translate the image towards the bottom left. in this example I'm up scaling an image to a frame exactly 2x its original size as you can see there ...
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1answer
115 views

Modify shader via Angle of Shadow

Simply put, I'm using two color ramps to add a texture X distance from the cartoon shadow and trying to subtract from the more horizontal parts of the shadow using True Normals as FAC, the result is ...
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1answer
28 views

When I render my image, and select composite and combined for the render view, only one of the layers is showing

I followed a tutorial on YouTube about how to make a planet in blender. Unfortunately, he didn't show you how to render it. The tutorial has a planet layer, and an atmosphere layer. Then in a ...
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1answer
86 views

How can we create a Bar code with the Texture Node Editor?

I had seen a post about how to create lines but one of the Answers by Lemon was excellent.. He used the Shader Node Editor to create a Barcode Generator. Here is the Link: How to make a barcode like ...
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1answer
127 views

How can I add / link nodes in / from the Texture Editor / Compositor?

I would like to add some nodes to the Texture Editor, I would like to edit their default values and then link them together. I have found something on here that was helpful but they deviated to the ...
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2answers
73 views

Color Match Assets for 2D Animation

I want to mix some blender assets with preexisting footage but I can't get the colors to match exactly. For example, create a new eevee scene with only a plane and a camera (no lights). Match the ...
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21 views

VSE and Compositor

Can you add a strip on the VSE to add a compositing to a strip of video or do you need to compose the part of the video separately?
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How Can I Control The Normal Pass In The Compositor

I am trying to change the bump value inside the Compositor just like the other pass,like Direct indirect color glossy diffuse. i search on the manual i did not find how u combine all pass with the ...
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22 views

Cutting video (not in the regular way)

How do you remove part of the background on a video and put it on another video. what I mean is something like this https://youtu.be/UcRtFYAz2Yo?t=14 .I believe it has to do with mask or green screen ...
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1answer
102 views

How do I create a custom node group for the compositor?

I have made a script that adds a panel, it has buttons that when pressed, nodes are added to the Compositor. I would like to add another button that then adds them to a group. I have looked around ...
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24 views

Masking out parts of an object for compositing

I am making a model of an Arc Reactor. In the model, there are some wires and a sphere with emission material, inside a glass material to create a glow effect. Now I want to make these emitting ...
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1answer
114 views

Can't crop image's size in Blender 2.8

Hi I want to make pixel art from my 3D renders and I found that scaling render result in compositor and pixelating it with node gives better result than rendering with low resolution. Problem is that ...
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0answers
36 views

How to do cyclical compositing?

I am trying to simulate the effect of long exposure on cameras. Using motion blur is a good strategy for short exposures but when I want an extra large exposure (to do some sort of light painting) the ...
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1answer
30 views

How to layer movie clips with black backgrounds in compositor?

I am using Blender 2.76. I want to layer this movie clip: over this one: So far this is what I have: using this set of nodes: I set "Dilate/Erode" to -100 to achieve this effect. The ...
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19 views

Compositing object and shadow makes seams between the two

I have this scene where I want to use AO and color balance in compositor but I don't want shadows to be affected. So I made 2 render layers where in first ground plane (shadow catcher) is set to ...
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2answers
123 views

Can you replicate Optics Compensation in VSE?

The Effect "Optics Compensation" in After Effects is great to compensate the distortion of certain lenses such as Fisheye lenses or wide angle, etc. I have only so far been able to replicate this in ...
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14 views

Compositor distorts some part of image vs blender cycle

I am trying to use compositing nodes to overlay some object above the other (eye browse over the face). The resulted image is partially distorted compared to normal cycle. I am not sure why. Please ...
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1answer
26 views

Applying glare to selected color only

I have a scene setup in Cycles that contains multiple light emitting objects on a single layer. Is it possible to apply glare only to blue colors without having to move these to a separate layer or ...