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

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volume shader, Z-combine / indexMA

I have two renderlayers combined together with the z-combine node. One layer contains a surface shaded object, the other a volume shaded object. (File 1) The result is not what I was hoping for. I am ...
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1answer
42 views

Compositor: How to crop an image into multiple versions?

For cases where we want to batch process an image into multiple versions, it's fairly straightforward if only changing the scale. But if we want to vary the cropping things get complicated. This is ...
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2answers
54 views

Z-Buffer render gives unexpected results

I'm rendering blender's z-buffer to an image using render layers under compositing in cycles, but I'm noticing unexpected results. Here is an example of a typical z-buffer render (not from blender). ...
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26 views

Why does my imported image appear without color in the compositor viewer?

I had imported a movie clip into the compositor and began adding another image, when I noticed that in the compositor backdrop viewer, the image appeared black and white, even though the original ...
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20 views

Star filter effect in Blender?

Is it possible to achieve a realistic 'star filter' effect procedurally in Blender? I think the glare node in the compositor might help me, but it doesn't seem to have the rainbow color effect that I'...
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1answer
46 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 ...
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1answer
16 views

Switching resolution wipes rendered layers?

If you render with the usual F12 render button, then any previously rendered layers get blanked out and re-rendered. If you are manually rendering via the button on nodes in the compositor, you can ...
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Compositor File Output Node overwrite?

In the Output tab of Render settings, you can set the output options for rendered animation. One of the options is to have new renders overwrite the previous ones or not. The File Output node in the ...
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1answer
26 views

Compositor : export output node when we want ?

is there a way to save output file , after the "F12" render is done for example , i created an output node for my passes ,and the way it work is that the passes are automatically saved when the "F12"...
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2answers
18 views

bring the output of compositing into blender material node editor

Hi is it possible to pipe the output of compositor directly into the material node editor ? the current workflow i use seems cumbersome, where i need to render out (file out) first then reimport ...
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1answer
52 views

How do I get this blurry effect with the Blender compositor

I'm new to the compositor and I'm trying to achieve this effect: a little close up I have tried using the pixelate, blur and directional blur nodes but the effect isn't the same, btw I got the ...
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0answers
8 views

How do you apply node-based image effects to an image loaded from a file?

I want to apply the Glare node to an HDR image that I load from a file. I know how to apply it to an image that I render: I render the image, and then while it's displaying, I enable "Use Nodes" for ...
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17 views

Why some viewer screens appear darker? [duplicate]

I'm new to blender, mainly using it as a video editor (editing on the VSE and using Composer for effects as chroma keying, etc.) and i'm having a problem which a really don't get. Sometimes, when I ...
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0answers
52 views

Making Renders look like Digital Paintings [closed]

I've seen a lot of 3d renders that really don't look rendered at all, most notably a lot of Gleb Alexandrov's work. I'm getting an idea it has to do with multiple factors including post processing and ...
3
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1answer
66 views

Lighting objects passing through a portal in Cycles

I've created a portal based on this method. Here's what it looks like: Light passing through the portal is not handled accurately; instead I've faked it by baking the light from the outside onto the ...
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0answers
39 views

Filmic color management and masks

I recently had the problem of having to mask (rotoscope) some footage in the movie clip editor and render out some elements to put in there. For rendering those 3D elements, I wanted to use the filmic ...
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1answer
36 views

Edge Mask Issue - Render nodes

I'm getting this weird edge when trying to use a mask in my composite, is there any way to get rid of this? Here is the issue: Here is my render node setup: Here is my render layer setup: The ...
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0answers
25 views

Compositor spitting out inconsistent noise

So I have a scene that I'm playing around with, and it was working exactly how I wanted until I rendered an animation. About ten of the frames had some odd white blocks appear on a certain portion of ...
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1answer
21 views

Is there a way to utilize simple math operations for color correction?

For me the currently available (2.79) color modifiers have limited capabilities. To modify a HDR image which has RGB values beyond 0-1 (0-45 for eg.) I really miss an offset function which is ...
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what is and how can i stop the constant “canceling…” in the compositer?

At the moment I'm working on a project and I was using the compositor. I don't know what started it, but at the top of my screen, there is a bar that constantly says "canceling" also, my render layer ...
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1answer
58 views

How to delete a mask in the movie clip editor?

I can't find find a way to remove masking data in the Movie Clip Editor. How to get rid of it?
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1answer
49 views

How to get glare on “Quick Smoke” (Fire & Smoke explosion)

I have this question that relates to Blenders Quick Smoke tool. Recently I have been rendering CGI explosions and smoke assets to be keyed in later on a short film, but I have this small problem that ...
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0answers
35 views

Rendering to Viewer Node in headless mode

I'm running Blender 2.79: /path/to/blender -b empty.blend -P script.py With script.py: ...
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1answer
23 views

How to add image into compositor?

I recently rendered a scene in blender after following a BlenderGuru tutorial and made sure to save the image. After closing Blender and going back in, I am able to open the image up in the UV Image ...
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21 views

how to use a movie in the background and a move in the foreground putting them into one movie

I have not played with Blender in a while, and if I did know how to do this, I forgot. I got a video that has some "black screen" behind a person, and I am using that as a "green screen" and place ...
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1answer
55 views

what is the node setup for a black luminance key

I had to correct parts of an animation. Which i solved by partial renders. Those patial images have a large black areas for the black areas i would like to show the original image. I kinda wonder if ...
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0answers
24 views

How to re-render an image sequence with different image texture for 1 object?

I did a Image sequence render of about 1500 frames only to notice that a small object in scene had a different texture file linked to it.. instead of re rendering the whole 1500 frames.. is it ...
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1answer
71 views

File Output node ignores inputs and exports all render layers

For some reason whatever I add as input in the File output node is not exported in the output multilayer exr file, but rather all the render layers are exported. This is the result exr file imported ...
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0answers
40 views

Why do my flames look horizontally stretched when rendered?

I have a scene where I want a car to look like it is on fire as I drive by it. When changing to RenderMode, my motion track looks good (enough). It is in the right location and does not move ...
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1answer
89 views

How to override Filmic color space in the Compositor nodes?

I want to use Filmic color space for my renders, but I also want to override Filmic's constraints in the Compositor for the final image. My current workflow right now is to open my Filmic renders in ...
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0answers
33 views

Putting a greenscreened actor over a 3D model

I already have all of the tracking and keyframing and stuff done using the tools in blender, and I know you can add a 3D object into your video by clicking the "Set as Background" button in the movie ...
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1answer
67 views

How disable/enable an Output File Node from python?

I have the next composition that I render from Python. How can I disable/enable the rendering of a specific node? Thank you.
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1answer
37 views

Images in the Render Layer nodes of the Compositor disappear

Images in the Render Layer nodes of the compositor disappear each time a new layer is rendered. It only keeps the most recent rendered image. The other layer nodes are blank. I've set up my scenes ...
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39 views

Glass Distortion without the glass object

i need a glass distortion effect but without the object visible. Is this possible? Would be nice if this is possible to fake in compositing. Thanks so far.
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1answer
39 views

Render out of compositor without rendering scene?

I don't understand how I can just render out of the compositor without rerendering the entire scene. The editor appears to be based on Softimages Post editor, where you just hit an execute for that ...
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1answer
42 views

Can't blur certain material in a scene

I created a cube, I selected a series of faces and then I seperated those faces (by selection). So I have two different objects with different materials. What I'm trying to do is to apply Blur filter ...
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0answers
42 views

Cycles - Tweak Ambient Occlusion

Is a "Correct" way to tweak AO in Cycles? I enabled the AO Pass to add the Ambient occlusion in the compositing, but at the moment i multiply the AO and the render, everything that is in black AO ...
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0answers
22 views

Defocus Node acting weird with blurred foreground. Fix?

I'm working on an animation, and in this particular scene, I have a close up of a naval gun turret. I wanted to focus on the middle gun, but the defocus node gives me trouble. In the image below, I ...
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1answer
354 views

Recreating Mandelbulbs with math nodes

I'm trying to recreate a Mandelbulb using Volume and math nodes in blender. I have been able to create a Mandelbrot with math nodes but I am having problems making it 3d. I tried translating this ...
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1answer
44 views

Controlling saturation on scene referred data

As troy_s mentioned in his answer about CDL node, Saturation is part of ASC CDL, but blender doesn't incorporate it in the CDL node. And to control saturation on scene referred data a custom node ...
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2answers
47 views

Compositor has a different effect when editing Render Result vs external PNG image?

I get a different resulting image for each of these three situations: I edit the true Render Result directly with "Render Layers" node in the compositor. (The Render Result image was never saved ...
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1answer
33 views

Object not showing up in final render when using compositor

Raw Blender newbie here, trying to make a lightning bolt effect above a plane. I followed the tutorial here to make a glowing effect on a jagged bezier curve, which looks pretty good. However, when I ...
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0answers
27 views

Stylized rim light using compositing

I'd like to find out how to do a certain hack, or rather a stylized rim light using the least amount of nodes possible, or at least a smart way to do it. I saw an application of this technique in the ...
2
votes
1answer
230 views

How to get glare on a specific emission reflection

I am attempting to make a red dot sight that is (relatively) physically-correct, but I would like to add a bloom/glare effect to the red dot. Basically, a face that emits red light reflects off a ...
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0answers
60 views

How to render 3d object in movie motion tracking

I have set up tracking scene for a jpg sequence to add 3D text to my movie. I am using blender 2.79 and using blender cycles due to shadow catcher feature (which I ticked for the plane in the 3d scene ...
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0answers
60 views

Double Compositing

In compositing I made a glowing eye effect but I want to use compositing to make another effect. If I do that it would mess up the first one. Is there any way for me to make two different effects so ...
3
votes
1answer
55 views

Compositor's Corner Pin node does something odd to input image

Using Corner Pin on an image has an irritating little quirk. It seems to distort the edges of shapes, even when applied in such a way that should cause no change. In the screengrab below, the ...
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0answers
25 views

Is there a way to create a “highlight catcher”?

I'm trying to make an image which will be composited as an overlay on something else (this is a view from the top looking down): Since I'm going to composite it on something else, I made the plane ...
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1answer
82 views

Glow behind reflective text [closed]

I have a reflective ( Mirror Surfaced ) text on a dark background / Wall so it's barely visible. Backlighting does not light up the scene too much, the text is reflective and would only pickup the ...
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0answers
21 views

How to make tracker on footage A pan footage B's XY position?

If I track the same point on two footages, or just one, can I either: 1. use that tracker to parent to an X-Y transform node of a video or image in the compositor? or 2. make the same tracker on two ...