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Questions tagged [compositing-nodes]

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

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6 votes
2 answers
7k views

Is chromatic aberration possible in blender

Can I separate individual colors of an image/video and add another color around it in other position to achieve chromatic aberration
saye prasaad's user avatar
6 votes
1 answer
773 views

Movie editing : VSE or compositor?

Currently editing a short-movie in Blender (~11min), I did reach some limits of the VSE. Some part of the movie is black and white, and for the first time Blender began to give me "not enough ...
Lutzi's user avatar
  • 1,693
6 votes
1 answer
2k views

Vertex colors are wrong value?

I am using a renderlayer with some vertex colors to render some masks. I have an object with a vertex color layer. The entire object is set to RGB values of .25 each (using set vertex colors command.) ...
Ascalon's user avatar
  • 6,629
6 votes
1 answer
632 views

Does the compositor have a node that will let me switch between images containing alpha channels?

Maybe I am missing it but I can't find a compositor node that simply lets me switch between 2 images including the alpha channel based on a factor. Here's a simplified setup description: I have a ...
Chuck's user avatar
  • 1,090
6 votes
1 answer
917 views

Online colour grading LUTs

So, I was researching some stuff about colour transforms, and found some companies who sell colour grading LUTs. They did include with the free samples a set of transforms from a bunch of recording ...
oblomov's user avatar
  • 359
6 votes
1 answer
4k views

Rendering a stereoscopic image in Blender 2.77

In am interested in setting up cameras and rendering settings to create a stereoscopic image or animated scene. I have found easily how to export one image where the red and blue channels are ...
MicroMachine's user avatar
  • 4,703
6 votes
1 answer
1k views

Is there anyway to match a sun lamp to the direction of the sun in an environment map?

I'm in the process of building a shadow catcher for a Cycles scene lit with a .jpg Environment Texture (equirectangular) - but it seems that the shadowpass will only work with a lamp in-scene. I'd ...
Reverend Speed's user avatar
6 votes
1 answer
4k views

Can blender do "deep compositing"?

Maxwell Render explanation of deep render and showcase of it Was wondering, can Blender do "Deep" rendering to EXR, where an EXR file has 3D depth to it? If you go to ...
Starius's user avatar
  • 1,114
6 votes
1 answer
5k views

How can I randomize a value for a node? [duplicate]

How can I randomize a numerical value for a node? Is there any one node, or combination of nodes that can achieve this effect?
Thom Blair III's user avatar
6 votes
3 answers
3k views

How to get Cycles viewport output in compositing

I'm rendering with Cycles in the viewport (not with F12) and would like to get that viewport output as an input node into the Compositor. How can this be done?
michael-kiss's user avatar
6 votes
1 answer
2k views

Final render not showing full node setup

I am learning how to use the node editing but have come up with a problem. I have followed the instructions that were give on a tutorial but I cannot get the effect to work there are 2 effects that I ...
Lindsey's user avatar
  • 1,667
6 votes
3 answers
625 views

Is "value" Blend mode same as "luminosity" Blending mode from Photoshop?

I tried for so long to look info for this problem and found basically nothing. I am trying to adopt a technique from Photoshop to Blender to match the colors of 2 different scenes, but end up in the ...
Artturi's user avatar
  • 188
6 votes
2 answers
1k views

How to force compositor nodes to execute?

Whenever I add certain compositor nodes after a render is done, it doesn't execute these automatically without re-rendering (By automatically I mean whenever a change to the node setup is made, ...
Delagone's user avatar
  • 2,098
6 votes
2 answers
2k views

Can Blender be used to composite HDR photos?

So, I know Blender can render out to .hdr format. And I am also familiar with Blender's compositor. What I don't know much about is the processes or algorithms used to produce HDR photographs, or what ...
Mentalist's user avatar
  • 19.3k
6 votes
2 answers
341 views

Recreate BI's Edge in compositor?

I've read that the Edge post processing effect from Blender Internal is Z based, and something similar can be done in the compositor. Can anyone suggest a setup for this, or have any ideas on how it ...
Ascalon's user avatar
  • 6,629
6 votes
1 answer
977 views

Is Z-Render Pass accuracy dependent on sample count? Are others like object id? (Cycles)

So I have a single-frame project and want to send it to a renderfarm that does not support OpenEXR or compositing (SheepIt). Can I simply do a 1 sample pass on my computer and still get high accuracy ...
Fish013's user avatar
  • 95
6 votes
2 answers
4k views

How to use the render result from one scene as a texture in another scene

Maybe there's a better way to go about this. What I want to do is render 2 scenes for every frame and use the result from the first render as a texture in the next. Example: Scene 2: A room ...
Jonathan Todd's user avatar
6 votes
1 answer
1k views

VSE/Compositor - Something similar to Turbulence Displacement effect in After Effects

I'm experimenting with creating some video effects in Blender, and I was wondering if anyone knew how to create something similar to the Turbulence Displacement effect that After Effects has (It sort ...
Robo11's user avatar
  • 105
6 votes
1 answer
1k views

Painting on OpenEXR MultiLayer images

I always render my animations in OpenEXR MultiLayer format with various render passes turned on. Is there a way with Blender's integrated paint editor to paint to the render passes of such an .exr ...
Blub's user avatar
  • 101
6 votes
2 answers
4k views

Is it possible to create a render layer with no depth of field?

I find that using depth of field (DOF) distorts the render pass masks, especially for very out of focus objects with a low f-stop (large aperture). I am trying to get around this by making a separate ...
PGmath's user avatar
  • 25.2k
6 votes
1 answer
4k views

Fake Motion Blur on Video Footage using Compositor

I have a stop-motion video I am working on, and I want to add motion blur to the character of the video. The character is the only thing that moves, yet if I use the Vector Blur node in the compositor,...
rioforce's user avatar
  • 2,052
6 votes
1 answer
11k views

Blender 2.8 - Object index pass in Eevee

I need to isolate filters on some objects in the compositor and Blender 2.8 does not have the options to setup object/material passes in the View Layers. Is there anyway to achieve this in Blender 2.8 ...
sotn's user avatar
  • 573
6 votes
1 answer
420 views

Export 2D Camera Motion as a vector for Vector Blur Node

I have this camera just "waveing" due to an s-shake (Built-In Function modifier for the rotation keyframing), and I need to use the motion of the camera to rotate and blur an image like a post ...
Fabrizio's user avatar
  • 728
6 votes
1 answer
1k views

Background removal

I have a video registration of a conference: fixed camera and fixed background. Is there a mean to keep the person talking and substitute the background with another image? I am wondering whether is ...
Stefano Pellegrini's user avatar
6 votes
1 answer
2k views

Cannot blur one render layer and then Z-combine it with another layer

this is driving me crazy. I want the trails in this scene to glow: But when plugging the trails into the z combine node the blur is removed. If you have an idea why that is and what I can do to fix ...
Christian's user avatar
  • 173
6 votes
1 answer
473 views

Is there any way I could render an image plane so the texture is at an exact size on the final render?

I want to create particles that are 2d, and always drawn the exact same size, no matter where they are in the scene, or at what angle, OR what size the final render is. So if my particle texture is ...
stackers's user avatar
  • 229
6 votes
1 answer
1k views

I'm trying to save an Image that I rendered and can see in the UV/Image Editor

As the title states, I am trying to save an image that I can see normally in the UV/Image Editor. I have done some compositing to it, and everything works inside Blender, but when I press F3 and save ...
Cold999's user avatar
  • 63
6 votes
2 answers
3k views

preview image sequence composite

I'm compositing an image sequence in blender, and would like to preview it while working. image editor shows only a still image, and I don't want to export every time I wish to preview. Is it possible ...
Dor Ben-Dayan's user avatar
6 votes
1 answer
2k views

How to update compositing nodes via script?

I create some nodes in compositing via python script: ...
Korchiy's user avatar
  • 179
6 votes
0 answers
306 views

File output node and output panel both exporting during animation

I have an animation ready to render but there is a small annoying issue. I currently have a basic file output node to export the raw render and a mist pass and they are both set to export to the ...
Glen Johnston's user avatar
6 votes
1 answer
2k views

How to crop image based on Alpha in Compositor?

I wonder if there is any way to crop a image based on alpha data like this: The reason I want to do this is that I want to crop the White area of another image (of the same dimension to the Alpha ...
Leon Cheung's user avatar
  • 27.8k
5 votes
4 answers
2k views

Save every other pixel of an image at half res

I want to take an image of X resolution, and make a new image of .5X resolution consisting of every other pixel from the original image. For example, if I had a 10 pixel image: ...
Ascalon's user avatar
  • 6,629
5 votes
3 answers
2k views

Transitioning the overlap of multiple objects

I'm trying to fade an object's regular solid surface into its wireframe. I've got as far as duplicating the object and deleting vertices until I'm left with an area of overlap. Is it possible to ...
ajwood's user avatar
  • 10.1k
5 votes
2 answers
34k views

How to composite in a background picture?

This is a diagram: Look at the background carefully... This background was made in compositing: http://www.filedropper.com/xtruder22 However, I wanted to know whether I could put a better ...
Turbo's user avatar
  • 1,155
5 votes
2 answers
2k views

How to utilize material (or object) index behind a refractive material in cycle?

The material (and object) index works only when the object is uncovered by other objects. But the thing is the object can be visible behind a transparent or semi-transparent objects. In cycles it ...
Prag's user avatar
  • 1,048
5 votes
1 answer
2k views

How can I do a monitoring/guard CCTV camera effect with blender?

How can I do a monitoring/guard CCTV camera effect like pictured below with blender?
mobile_beginner_2015's user avatar
5 votes
2 answers
730 views

Is it possible to create a compositor node with PyNodes that outputs camera clip_start and clip_end?

Im not looking for a how to, but some of you may know if this is possible or not. An example of a dummy node added to compositor would be much appreciated, i can't find any (or i'm looking in all the ...
zeffii's user avatar
  • 39.7k
5 votes
3 answers
2k views

Is there a way to create a seamless image in the compositor?

Can a rendered frame be made seamless, by some compositor tricks? What I'm looking for is something similar to the GIMP filter Make seamless. Here's an example Original (downloaded from Pixabay): ...
user avatar
5 votes
2 answers
3k views

Object material that is completely transparent, but occludes other objects

I'm trying to overlay some animated 3D models over live action footage. Some of the models (I'll call them collection A) will appear behind objects that are in the footage. I also have matching models ...
Elwood Soup's user avatar
5 votes
3 answers
17k views

render only composite

So this may be a noob question, but I've got a video set up with nodes, and I go to render, but blender makes 2 passes, one is the scene (which had been previously used for smoke simulation but doesn'...
DragonHeart's user avatar
  • 1,524
5 votes
2 answers
426 views

In Compositor, is it possible to change multiple node values simultaneously even though there is no input socket?

In Compositor, some nodes do not have input socket for that value. Can I change these values at once? For example, my node group has Distance input socket. I want to use this value to Distance value ...
Kei MURATAGAWA's user avatar
5 votes
1 answer
920 views

Integrating CG imagery with footage from cameras using ACES

As a Corollary to this question (Using Blender with wider gamut than 709 primaries (like ACES)). How can I use blender to integrate CG, and footage from cinema cameras using ACEScg? My goal would be ...
susu's user avatar
  • 14.1k
5 votes
1 answer
365 views

Why does the "Map Range" node fail for values above 10,000?

I have a "Map Range" node with the following inputs: Because 10,000 is right in the middle between 9,995 and 10,005, I expect the output to be 0.5, and indeed it is. If I now increase the value by ...
balpha's user avatar
  • 153
5 votes
1 answer
20k views

Cycles - glare/bloom isn't working?

Ok, Im very new to nodes with the actual render but Im trying to do what these people did, just get a basic glow around my emissive materials: unity animate object transform into another How do I get ...
blue's user avatar
  • 1,287
5 votes
2 answers
2k views

How do the options in the Post Processing tab work?

Can someone explain what the Compositing and Sequencer check boxes in Render Settings do? Basically I rendered a scene with several layers, then used the compositor to stitch them together. Next I ...
CGDive's user avatar
  • 822
5 votes
3 answers
5k views

Can textures be rotated?

I'm using textures in the compositor. Is it possible to rotate these textures? The rotate node doesn't work, due to cropping of the corners. What I actually need is to rotate the whole coordinate ...
ajwood's user avatar
  • 10.1k
5 votes
1 answer
2k views

How can I create a single Cycles texture with a different image for each object it's assigned to?

For a model I've made I'd like to keep the basic properties of the Cycles material (shader type etc) the same for most of the objects that make up the model, but have a different image mapped to for ...
user1519's user avatar
  • 133
5 votes
1 answer
1k views

How to chose the format for the File Output Node?

In the Compositor, there is this node called File Output node that allows output additional files : They are very useful when you want to render extra passes or ...
mqbaka mqbaka's user avatar
5 votes
1 answer
1k views

How to change file output node's file subpath value in python

I want to change the value of File Subpath of File Output node in Compositor from python. I'...
Nagabhushan S N's user avatar
5 votes
2 answers
2k views

How to lose colour on distant objects?

I need achieve the following effect that can be observed in the image. Is it possible?
Lionel Bino's user avatar

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