Artifacts in cloudy areas?

[Diskonaut]

I’ve got a handful of clips that contain cloudy, light coloured areas. These get discoloured when applying e.g. Bump Distortion Linear fx. Color Posterize gets me a nearly identical result, for reference.

Are there ways / best practices to handle this?

It’s not that I have to use those fx on those particular clips, but I keep forgetting which fx / clip combos are the ones to watch out for (it’s always the same ones). Saying this because labelling or similar might do the trick, doesn’t have to be a technical solution.

Thanks!

[ProjectileObjects]

Would you share photos so we can see what you see?

[Diskonaut]

Of course

No fx:

w/ Bump Distortion (SourceAtop, max wet)

[Diskonaut]

FYI I’m now thinking it’s not VDMX, but the rendering app I’m using. Not sure at all, but I just might have rendered all the problematic ones in fractal renderer/animator Chaotica. Guessing there’s some alpha channel weirdness going on already from the source, but only visible in some cases.