Hey there, i'm having an issue where I import a greenscreen video, remove the specific colour and when I do this the video behind it changes in colour/opacity, like so
Not 100% sure, but it looks like it might be the alpha channel level. If you add Channel Blend to your Plug-In chain, and if you go to the control in the 4th row , 4th column, this sometimes controls the opacity of the alpha channel. If you hit CTRL while pushing down on that control adjustment, I'd be curious to know if it helps. Also, when Chroma Keying, when you drag the Color Picker to the screen, it helps to draw a square versus simply clicking in one spot.
If you watch this video, and jump to the 1:50 second mark, it shows what I'm referring to.