Hi... I'm having difficulty applying sapphire effects to a green screen keyed out subject, without having the entire image affected. I'm running Sapphire v2.0 on a Avid Nitris.
I have a background layer on V1, and have a keyed out subject (using the Spectramatte Keyer) on V2. I want to apply the scan lines effect to my subject, but when I alt drop the effect onto the V2 keyed layer, it affects my entire image. I have gone into the effect, and clicked "apply to title/key" but it gives me similar results.
V3 keyed out subject
V2 keyed out subject
put your Chroma key on V3 and select the "show alpha" checkbox.
apply ScanLines to v3 by alt+dropping it and then select "apply to title/key" checkbox in the effect editor. This will merge your matte (v3) and fill (v2) and comp it over your background layer on V1.