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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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
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10 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 ...
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28 views

Problem with edges of mask in exr file while working in photoshop with it

I exported a exr MultiLayer file with masks from blender using cryptomatte. And I have such a problem in Photoshop itself, the seam between the objects is translucent, the mask leaves such an ...
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25 views

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 ...
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27 views

Compositing Note for export cryptomatte to MultiLayered OpenEXR that work in Fusion with reactor + cyrptomate plugin

Someone can share the node on compositing to properly export the Cryptomatte layers into a MultiLayered OpenEXR that works in Fusion with reactor + cyrptomate plugin. I try something like this but ...
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42 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 ...
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27 views

The object covers/block all other objects in front of the camera while rendering

Issue: Object that represent my studio for rendering characters bothers me. It cover over all objects within it and stay in front of camera . And it only creates such a problem when I try to work with ...
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28 views

Blender cryptomatte not working with crypro pass from arnold render

tried to composite some stuff ive rendered from arnold with maya. cryptolayer node just throws black if i feed the crpyto pass from arnold render. If i feed the ID pass it works, however ID pass ...
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67 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 ...
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126 views

Cryptomatte material masks export

Is there a simpler way to export all separate masks of materials using open exr multi-layer format for post processing in photoshop using the exr-io plugin? I always end up in a time consuming node ...
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311 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 ...
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184 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 ...
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77 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. ...
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86 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 ...
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108 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 ...
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1answer
1k 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 ...
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493 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 ...
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1answer
607 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 ...
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1answer
277 views

Cryptomatte aliased/jagged edges output

Is there a way to get antialiased output on cryptomatte?
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1answer
234 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 ...
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374 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 ...
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625 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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231 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 ...
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311 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 ...
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2k views

Cryptomatte - What Crypto00, Crypto01, Crypto02 means?

Why Render Layer node use several outputs, like for object pass CryptoObject00 CryptoObject02 CryptoObject04 and Cryptomatte node several inputs Crypto00 Crypto01 Crypto02 What I tried, ...