NewBlue chroma key leaves a gray outline on shots?

[marion64]

I use VideoStudio 2020 to edit game footage, and one thing I've noticed while using it is that the NewBlue Chroma Key effect leaves a gray outline on the edges of whatever clip it's applied to. I'm unsure of why or how this happens, and sometimes, it just doesn't happen at all, for no reason that I can find. The built-in chroma key effect doesn't do this, but it also tends to key out colors that are completely different from the chosen keying color and leave a colored outline on the objects in the clip. Is there any way to get rid of the gray outline while still using the NewBlue chroma key?

[Vdanny]

Hi,
Did you try applying a very small amount of the "Shrink' control within NewBlue Chroma Key? This should be successful in getting rid of the grey outline.

[marion64]

I tried that, but it didn't seem to affect the outline at all. One strange thing I've noticed is that even if everything in the clip is cropped out using the crop tool, the gray outline remains where the borders of the clip usually are.

[asik1]

Can you show here a screenshot of the gray?