Hello. I’m trying to render a scene in blender in a multilayer EXR render. Flame rejects to read motion vector pass, with next error: " Cannot access frame1: Failed building MIO format. Non RGB pixel layout has more than 3 non alpha channels: WXYZ" In blender, I’m remaping vector channels to rgb.…

That is because are screenshots from differentes tests. I figured out. I didn’t have “compositing” activated in post process option. :sweat: So, I was not rendering throught compositor pipeline. :face_with_open_eyes_and_hand_over_mouth:

Take a look here… [image] Motion Vectors Flame Questions After discussing MotionVectors from CG I wondered how they actually work, and here is the answere to that question at least for Blender/Cycles: The Vector pass is 4 channels (RBGA) and are containing this: Vector.…

I always have to convert the vector pass in nuke from blender - I honestly dont know why flame just refuses to read it, you say it breaks even after shuffeling it out using the compositor in blender? I find the compositor kills metadata dor cryptomattes etc so I dont use it.

But I can’t even read the file So, the problem is vector channels have “.X” , “.Y” , ".Z " suffix , and they have to be renamed to “.red”, “.green”, “.blue” , right? … Do I have to use nuke only for that? :sleepy:

Did you try the reshuffle in blender?… I think that thread has an example that works.

Yes, sure. Exactly like you did. I found that info searching about how to fix the stupid orientation-system used in blender. Then, I get the wxyz layout problem with blender’s renders. I thought that separating wxyz channels and combining channels in rgba in blender’s compositor was the fix, but , n…

Bear in mind in the first screenshot the render is coming straight from blender to flame… no nuke intermediate.

Not sure if it matters, but at the time I was probably on Blender 3.4, Flame 2023.

blender 3.4, flame 2023.2 [Screenshot from 2023-05-24 20-23-16] [Screenshot from 2023-05-24 20-25-52] [Screenshot from 2023-05-24 21-45-43]

Weird. I dont have Flame available now but just did a quick test and upon inspection in RV, vector layer shows as RGBA [image] Only difference in my Blender setup is that I dont name the default RGBA. I have to leave it blank to be able to have it as default layer in other apps… specially flame

WXYZ pixel layout in EXR

Flame Flame Questions

milanesa May 24, 2023, 3:32pm 2

Take a look here…

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WXYZ pixel layout in EXR

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