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Questions tagged [cryptomatte]

Cryptomatte is an open source automated ID matte generator created by Jonah Friedman and Andy Jones at Psyop. Blender has adopted the standard beginning with version 2.8 as a compositor node. Use this tag for questions about the cryptomatte node in blender's compostor.

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cryptomatte from BLENDER to NUKE using custom fileout - not working

my 3d scene : In the render layer , I turn on cryptomatte for object and material and this is my setup in the compositor ( i render out the fileout node as CRIP02.exr - multilayer EXR) : I also save ...
andio's user avatar
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how not to reset the naming in the 'file output' node

I have a file output node in the compositor and right now the output format is openEXR. I already setup the names for all the inputs : Then I change my mind and I want to export as multilayerEXR but ...
andio's user avatar
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How can I use one object to mask another object?

I have a boat, on a plane of water. The plane of water goes partially up the side of the boat (the inside of the boat has no water, due to a Boolean modifier). I want to erase the entire plane of ...
Jamin Grey's user avatar
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1 answer
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Cryptomatte node does not recognise Cryptomatte layers in EXR file

Blender version: 4.1 I render to EXR then denoise specific passes and output Multilayer EXR again with File Output node and Cryptomatte layers copied. When I import this new image sequence for ...
Martynas Žiemys's user avatar
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Render cryptomatte pass with python

I have a scene in scene in Blender: Through python I generate copies of a metal part you can see on the left, drop them into the box and then render. Then, based on a condition, some metal parts are ...
Trueenglish's user avatar
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75 views

Why are my Cryptomatte Node's "Crypto.xx" inputs missing?

I have several Cryptomatte output sockets on my Render Layers node, but no place to plug them in. The only input on my Cryptomatte node is "Image". Render Layers node outputs: ...
Mentalist's user avatar
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16 views

Material Override on Custom Selection

I have this example here where I have milk inside frosted glass. I need a matte for the milk including the refractions on the glass. Cryptomatte only gives me a matte for both objects combined. In ...
izzyacar's user avatar
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88 views

How to select a material or object using the cryptomate node if it is a volume

I have a cube in the scene that I have assigned a volumetric material to. Why can't I select it using the cryptomate node when composing a scene? All materials and objects in the scene are displayed, ...
arachnoden's user avatar
  • 1,369
0 votes
1 answer
204 views

Cryptomatte issue when saving EXR files from output file node Cyptommate passes getting glitched [closed]

i'm working on a professionnal animations right knoww and i'm having a big issue with the crytomate output. Context : I will render an animation and i want to have the cryptomatte passes. I'm working ...
Eliott's user avatar
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1 answer
124 views

Is there any way to mask out surface and leave reflection/shadow only?

I'm trying to create a composite image with bottles on a table and I need to have shadow/refraction/gloss of the bottle to be separate from the bottle itself. I tried Shadow Catcher pass, but it ...
Nebular Dust's user avatar
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362 views

Get cryptomatte for volume objects

How can I get a cryptomatte or another form of mask for an volume object in Blender? All volume objects are just missing from the cryptomatte and aren't selectable in the compositor using the ...
Aci's user avatar
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480 views

Why some objects won't show and selectable in Cryptomatte?

I have created some metalballs and animated them, and I need them to get excluded and masked in Composition, but I can't select them in any kind of matte: asset, material or object The problem gets ...
Roozy's user avatar
  • 187
0 votes
2 answers
476 views

Is there a way to export the Cryptomatte "pick" image entirely?

I'm using the cryptomatte node to export individual mattes for various items in my renders, but I'd like to also export the entire "pick" image to a new file just as it's visible in the node ...
Stephan Sturges's user avatar
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1 answer
76 views

How to dim a light source's effect on selected materials using light groups in the compositor?

In Blender 3.2.2 I have multiple light groups to light up a scene of objects. One light group in particular(HL group) is used just to highlight a singular object. I wish to dim the effectiveness of ...
Justin Coleman's user avatar
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1 answer
2k views

Object Index Blender 3.0

Unable to get Object Index output in Blender 3.0. I am using the process given in the image. Is it right? Please help.
Tapas Roy's user avatar
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1 answer
472 views

Cryptomatte issue

I'm trying to add cryptomattes into my workflow and it is working just fine in blender compositor but I can't make them to work in any other software (Nuke, Davinci, After Effects). What am I ...
Alan Dennis's user avatar
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1 answer
1k views

Cryptomatte node not displaying anything?

I am not sure if a screenshot is needed. Basically, I have rendered a sequence in open EXR Multilayer 32 Bits. When I import the files into a new Blender file in the compositor I can see the ...
Bruno Suraski's user avatar
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142 views

Mixing Cryptomatte

I have a problem. I made 2 renders with diffrent lighting and first I wanted to separate parts of them using cryptomatte and than combine them, but fore some reson one part is partly transparent
Zinek's user avatar
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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 ...
Fernaldy Wiranata's user avatar
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1 answer
148 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 ...
archviz_fan's user avatar
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What are Multipass and crypto mattes?

I have animated a character with texture. I want to composite / integrate it into my reallife footage. I have heard about multipass compositing is it possible to get different passes rendered from ...
Abdullah Al Sayed's user avatar
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65 views

Best practise question for screen replacement with multiple moving screens: Cryptomatte / ChromaKey

I am building a 3D animation for a video background. It will be moving and stacking tower of TVs. It will spawn multiple screens, stack them and then turn them on and off, display noise patterns on ...
Avion32's user avatar
  • 115
2 votes
2 answers
339 views

Alpha over node is including unwanted objects in the image?

In this space animation that I'm working on, I would like to composite a blurry version of the planet into the background to create an atmosphere effect. So far I've added a cryptomatte node to cut ...
Aaron zw's user avatar
6 votes
1 answer
1k views

Cryptomatte - Clean edges

blender people, please, does exist a solution to make a clean render pass for ID colors - materials? I want to achieve a same solution like in VRAY - material ID. After that, I want to import it in ...
JSM_Parametr's user avatar
4 votes
0 answers
1k views

Cryptomatte is showing the same color for different materials?

I am using cryptomatte. That mostly works fine for me but I found it uncomfortable sometimes. As you all know, the pick color of Cryptomatte depends on the name of the material. The problem is that ...
J. SungHoon's user avatar
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1 vote
0 answers
263 views

Is there a way to control cryptomatte colors? for object colors for instance masking out of the box in blender

Is there a way to know each color of each object before it will be rendered? Or a way to setup colors for each object. In other words I need to setup a preseted color for each object on the scene. ...
cxnt 's user avatar
  • 397
1 vote
0 answers
243 views

Cryptomatte from volumetric environment is not fully opaque

World shader is simple Volume Scatter with 0.01 density. When I get matte of default cube I get partially transparent result. Look at red-highlighted values. This is a point near center of the cube's ...
Serge L's user avatar
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2 votes
0 answers
344 views

Cryptomatte Boundary Artifacts?

I got Boundary Artifacts while using Cryptomatte. I wrote a question on the same topic, and I read a comment that low resolutions could be an issue, and added a resolution perspective to write more ...
J. SungHoon's user avatar
  • 2,226
0 votes
1 answer
4k views

How to properly export Cryptomattes for Photoshop?

How to properly export Cryptomattes for Photoshop? Seems I cant find the right thing on the internet so far. In Modo, was just one click to get the " Color ID Pass" I've tried EXR multi layer and ...
kay777's user avatar
  • 305
1 vote
2 answers
1k views

Anti-aliasing of ID Mask is more coarse than Cryptomatte

The edges of the Cryptomatte are smooth, but the edges of the ID Mask are rough even if the anti-aliasing option is checked. The anti-aliasing option of ID Mask seems to have a very small difference ...
J. SungHoon's user avatar
  • 2,226
2 votes
1 answer
2k views

I get border artifacts when using Cryptomatte or ID Mask

I tested masking in the Blender compositor. Please see the GIF below. The 1st to 3rd outputs are Crptomattes(obj, mat, asset) and the 4th to 5th outputs are ID Masks(obj, mat). All mattes have border ...
J. SungHoon's user avatar
  • 2,226
1 vote
1 answer
1k views

Cryptomatte aliased/jagged edges output

Is there a way to get antialiased output on cryptomatte?
kay777's user avatar
  • 305
1 vote
1 answer
800 views

Cryptomatte outputs one or two colors only

This may be me just being a Blender noobie, but when I try to render a Cryptomatte pass I only get one or two colors, usually green or white, with full alpha transparency for some reason (I had to ...
Igor Harmendani's user avatar
1 vote
2 answers
1k views

Blender Python and pass settings

Try this: Manually set checkbox "Denoising Data" on Log shows bpy.context.scene.denoising_store_passes = True Copypaste exactly that into console and hit enter ...
Axel's user avatar
  • 60
1 vote
3 answers
3k 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 ...
OroNZ's user avatar
  • 1,207
0 votes
1 answer
400 views

Is Blender 2.8 Cryptomatte samples dependent?

In other words, while rendering a single 2000 sample OpenEXR Multilayer image, I open another instance of Blender, with no scene and a clean compositor. After that I drag and drop a low sample image ...
Guglielmo Ruben Gatti's user avatar
1 vote
1 answer
1k views

Cryptomatte & Render Layers: is it possible to recover Cryptomatte from a .PNG sequence?

I will try to explain my noob-problem a little deeper. I have a 3-days-render just done as a PNG sequence. I enabled Cryptomatte pass before rendering, but I eventually realized that the png sequence ...
Guglielmo Ruben Gatti's user avatar
15 votes
1 answer
5k views

Cryptomatte - What does Crypto00, Crypto01, Crypto02 mean?

Why does the Render Layer node use several outputs, like for object pass, such as - CryptoObject00 CryptoObject02 CryptoObject04 While Cryptomatte node uses several inputs like the following - ...
vklidu's user avatar
  • 36.8k