[UE 5.4] Depth pass is black when rendering as Post Process Material. What could be the cause?

Development Rendering
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1

I am rendering a .png sequence in Movie Render Graph with a depth pass as post process material. The PPM is enabled and set to the SceneDepth Material. The scene depth frames are rendered fully black. What could be the cause of that?

2

It couuld be the fact the PNG node forces an alpha. I had the same issue and when I swapped it out with the jpg sequence it worked fine. Not that I want a jpeg sequence for my passes…