Questions tagged [compositing]

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4
votes
2answers
182 views

What would be the best way to have something be different in a reflection

I have a render I'm working on which is focused on a character leaning over a reflective surface and a different character is visible in the reflection. The top picture is the main character, and the ...
0
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0answers
8 views

How to turn off or stop automatic masking when using keying node?

I've opened a video file set for a green screen effect in Blender. Without having done anything else to the video, or even in Blender itself I go to the compositor tab. If I add a "keying" ...
2
votes
1answer
70 views

How do I deform an entire collection (Lattice)

I'm working on a film-project where the scene plays out in a huge landscape and the camera moves back and forth within it of course we also have actors, animals, vegetation and other elements moving ...
0
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0answers
11 views

Making holdout material that interacts with environment [closed]

I'm trying to make a scene in which one wall has holdout material but still interacts with other walls. Let's say wall should be red and other walls and objects in the scene will have red tint from ...
1
vote
1answer
44 views

How I Unpremult in blender?

‘Unpremultiple’ is the process of dividing the alpha out of the image. Then the colour corrections can be done. After this stage, the alpha can then again be multiplied back in. This can often be done ...
0
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0answers
21 views

Rendering alpha material for compositing - alpha rendering as black

I'm trying to render something for compositing onto existing footage (like digital makeup). I had this working after looking at lots of threads and videos and wrote down my steps so I wouldn't forget -...
0
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0answers
16 views

Blender motion blur on alpha channel

I’ve added motion blur to my object in compositing and it has registered on RGB channels but not the alpha channel. So when I export my image the blur outside the RGB channels of the object is lost. I’...
0
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1answer
36 views

How can i connect a tunnel mesh with video 2D imported and then render it?

I created a tunnel using: a cylinder, an array, a bezier and a noise texture to model the shape of the tunnel. Now I want to link the start of the tunnel with a video clip uploaded via empty. Could ...
0
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0answers
13 views

Mist pass causing some transparent textures to loose transparency

I am trying to add a little bit of fog or something without using volumetrics, so I am trying to use a mist pass to create this effect. This is the picture I want to add fog to But the mist pass has ...
0
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0answers
18 views

Alpha Over makes my image brighter

So i've been sitting here with a problem in blender 2.9 that i just can't seem to solve, when i add an alpha over with id mask and more to make a certain material glow, the image gets brighter (more ...
0
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0answers
20 views

How to split areas of one material for ID mask in Compositing in Cycles?

How in Compositing to select only area for ID mask, which is created in material using mask (Fac)? In the example in this picture, there is one material & with help of mask, areas with Emission ...
0
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0answers
18 views

How to show dynamic paint from the compositing

I am generating synthetic images of the sea with boat on it. I want to create a mask for these images with a different color for the sea, boats and their wakes. I had no problem to assign a different ...
0
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0answers
27 views

Sky Replacement VFX Warping Issues

I am trying to do a simple sky replacement. I have keyed out the sky and replaced it, but the problem is that it does not match the movement of the camera. I have tried using 2D stabilization, but the ...
0
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2answers
27 views

Rendered image in viewport not showing in compositing tab?

I'm following a tutorial and seem to have the nodes set up correctly but the viewport in the background won't appear, what could be going wrong here?
0
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0answers
12 views

Cryptomatte has gaps between them

So when i composited my render, i noticed my cryptomatte somehow have some gaps that cause glitches the soldier and the wood has noticeable gaps and after i checked the cryptomatte data, it does have ...
6
votes
2answers
312 views

How to take what a camera sees and project it from another camera?

Is it possible to take what a camera sees, and use that from another camera as a projection? That is to dynamically update a projection from a camera? There are some interesting results if this can be ...
1
vote
1answer
41 views

Composite image sequence only using one image in the sequence

I am only getting a single frame of an image sequence used in my Compositor output frames. I am trying to create a series of images from a single background (static) and an animation (png) sequence. ...
2
votes
1answer
51 views

Save render for compositing

Is there a way to save render so you can manipulate it in compositor even after turning off and back on the program. Yes I know I can use image node but it doesn't have cryptomattes.
0
votes
1answer
39 views

Alpha in the mist channel

Its possible to render an object with transparency on (to don't see the background) and also to get the mist channel with the transparency applied to? I would like the part marked in blue on the ...
0
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0answers
30 views

Distortion Node Black Area

Is there a way to render beyond the black/transparent area created by the Distortion Node added in compositing? A simple crop or perhaps an overscan might fix this, but hoping to have it just render. ...
0
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0answers
12 views

How to mask an image with another? OR How to feather box mask? (Compositing)

I want to fade-out the edges of a rendered image sequence, whilst keeping the alpha from the original. I drew a mask, a blurry box, (and the inverse, just the edges coloured black and the middle ...
1
vote
1answer
19 views

What's the difference between shader editor and compositor

I started learning blender about a year ago and I started learning nodes this month. Does anybody know what is the difference between the Shader Editor and the <...
0
votes
1answer
33 views

Masking in different scenes

I am a bit confused how to manage my problem. I have got a setup of a building site with several cameras and about 150 objects. Now I want to emphasize one of these objects by using freestyle. Due to ...
0
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0answers
17 views

blender color management and compositing problem

i have a question about color management in fusion: what should I do if I have a blender render in exr, and I want to blend that with stock footage and pngs in srgb color space? i know I should ...
0
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2answers
30 views

Blender is only rendering a composite of a movie clip that I made and not the full scene, which I want it to [closed]

I am trying to render a scene, but when I render I'm only rendering the keyed footage that I composited initially in the project. Please refer to this video link where I show my project and break down ...
0
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0answers
12 views

Problem in render image with cycles . objects with emission seem to form large white lines after compositing

i was just rendering a teaser image for my model to post on twitter , so i thought this setup would look good >>>> the light emitting objects used just emission node with a strength of 10 ...
0
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0answers
12 views

Why does davinci resolve only display my AO passes on a wxr from blender?

I had made an EXR with the hopes of compositing it in Davinci Resolve, but the passes aren't displayed correctly. Even in the channels it displays the AO passes rather than the combined passes by ...
0
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0answers
27 views

Composite nodes being ignored when rendering from command line

I am trying to render an animation using cycles from the command line but my composite nodes are being ignored. The images look ok, just the denoising and glare are missing. In blender on my other ...
2
votes
1answer
106 views

Ambient occlusion problem using EEVEE

I'm trying EEVEE for compositing but I don't know how to avoid (if possible) those ambient occlusion "pops" . It occurs when an object is in front of other and the ao shadows appear suddenly ...
0
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0answers
12 views

trouble using an ai generated matte for rotoscoping

My apologies if this is a dumb question. I made a python script to generate mattes using machine learning, following Damien Allen's tutorial (https://www.provideocoalition.com/automatic-rotoscopingfor-...
3
votes
1answer
46 views

Render parts of object(s) only when they are within a defined area

I'd like to animate a train car entering and exiting a diorama from left to right. As the train car exits the station, "breaking the plane" that is the boundary of the station, the parts of ...
1
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0answers
31 views

How to enable occlusion with shadow catcher in cycles?

I am using Blender 2.92. I have a shadow catcher in my scene, that I would like to also occlude objects between him and the light source. for example please observe the following result: The ...
1
vote
1answer
33 views

How to render over the previous frame to create trails [duplicate]

When you use code on a 2D canvas to draw in an updating loop you have to draw over the previous frame or wipe it or else you get these trails of moving objects. In blender you don't have to wipe the ...
0
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0answers
27 views

Cryptomattes: Mattes not appearing Behind Glass

Using Blender 2.90.1 Cycles renderer (of course) for cryptomattes. Noticing no mattes are made for seperate objects inside glass ie. soil in vase/ juice in jug. Help? [![ ]4]4
1
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0answers
38 views

Add a 3D ironman mask to a real head

this is my first question ever :) I am a blender beginner so pleaaaase bare with me. I have a 3D ironman mask that i have downloaded. I have a footage of my daughter and I want to add the 3D ironman ...
1
vote
0answers
26 views

Create LightCone (GodRays) with only light, no black, much transparencies; to place over (Alpha Over in VideoEditing) a video

Sorry to come again with this. In Blender 2.79b this works easily and perfectly by just switching on "Halo" in the "Spot" setting. Didn't even set the World's Alpha to "...
0
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0answers
19 views

Creating a height map through blender's compositing

Hello I know that it is possible to make a height map from your sculpt using the compositing window by taking the Z depth out of the render image and then applying a gausian blur. I know how to add a ...
1
vote
1answer
53 views

Can't get transparency right for God Rays

I want to get a Hologram effect like in the image uploaded here: I need to place the hologram over a real video clip, so lots of transparency. Works perfectly, following this guy's advice here. Now I ...
0
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0answers
25 views

Compositing Blender

I am new to blender compositing and am trying to make the first picture look like the second one ( which is an imgur because it is too heavy. So my initial thoughts were: the 1st picture is too ...
1
vote
0answers
15 views

3D objects not appearing in live action tracked footage render, but they do appear in rendered preview or material shading mode

My objects appear just fine in all material preview or rendered modes, but when I actually render out a frame or go to the compositing tab none of my objects are included in the final render. It just ...
11
votes
1answer
226 views

Magic Eye Render

Today's newspaper had a Magic Eye or Autostereogram image in the kids section ... started me wondering could tools available to blender, be used to render a simple scene (Suzanne of course, repeating ...
0
votes
1answer
16 views

I want to remove one object from my render so that it leaves just a transparent background

I want to remove the pool water from my image, so that there is only a transparent background, so that I can add the pool I rendered in luxcore in photoshop. Right now, because I could not get it to ...
1
vote
1answer
54 views

Composite cryptomatte video

I’m working on a small animation/film, I will render the frames out as PNG then sequence them together. How do I use the cryptomatte/render passes feature on this animation because when I add an ...
1
vote
1answer
28 views

F-Curve Modifier editor not showing

I'm trying to use an f-curve noise modifier, but it was a bit too harsh for me. I was going to turn it down a bit, but the noise modifier was not showing up in the compositing modifier menu panel. (...
1
vote
0answers
38 views

Is it possible to render hair in Cycles, other parts in Eevee, and then do compositing?

I try to render eyes and hair in Cycles then render face and the rest of the scene like room and light source in Eevee. After that, I try to use the compositor to connect the two render layers in mix ...
1
vote
0answers
27 views

Rendering problem, weird distortion on blender 2.91

when rendering this i face strange issues on some frames like 5 o 6 of 281, they are specific frames, only happens when rendering final image, but in viewport rendering mode it looks good
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0answers
21 views

Nothing is showing up on my compositing panel

I have the nodes turned on and have even added things to the space, anyone have any solutions?
0
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0answers
24 views

Rendered Image is super zoomed out [duplicate]

I’m doing the blender donut tutorial and I’m on part 7, level 1 at about the 15:00 mark. My issue is that I zoom in to the donut so I can see the details of it. I select the camera mode, then F12 to ...
2
votes
1answer
31 views

Setting background color

I am trying to set my background to be only one color. Below is my 'Compositing' edit screen and the color i set for the background. This is how it turned out : So clearly its toned down so much, ...
1
vote
1answer
49 views

How to circularly fade an image to alpha in compositing?

I'm trying to circularly fade an image into transparency in the blender compositor. My approach was to use an Ellipse Mask in combination with the Set Alpha node, so that the picture becomes more and ...

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