I’m a bit puzzled about getting a pure green screen background for AfterEffects compositing.
Even with an empty scene in Unreal
- all lighting deleted
- no atmospheric fog
- all post processing deleted in ‘Edit Project Settings’ and camera settings
- the green-screen material is perfectly green, unlit, and emissive (no lighting will affect it, no shininess, no shadows)
- for the moment, there is nothing else on the screen… just big green cube covering the whole screen
- lightmass run
Here is the thing… it looks ok visually, but when I put it into AfterEffects, Keylight 1.2 takes out all the green, and the image should now be transparent (because green was the only thing on the screen). However, there is always a subtle dark vignette effect around the edges. The centre of the still image / or image video sequence looks fine, brighter than the edges.
The same thing happens whether I do the render from inside the editor or from Matinee ‘movie’, and it is identical if I take a single screenshot or if I render a BMP or PNG sequence.
Has anyone got any suggestions please?
In AfterEffects (after Keylight)…