Chorma key

[Inolas]

I was doing chorma key in vedio to remove green screen. Everything was going good but when i i play vedio then there is a black spot coming on Goggles/specks in between sometimes at some points in vedio I am sending you image kindly check it out and let me know whats the reason behind this. ? Please. 

 

[Mylenium]

Well, there is that little thing called refraction that bends your green screen around the spectacles' curvature. You will need to fix it with some extra masking.

Mylenium

[Rick Gerard]

Check the matte, check the alpha channel with the layer soloed. You may need to refine the settings or do a little hand roto. That is not at all unusual with greenscreen work. I was working on a shot yesterday that required 4 copies of Keylight and about 20 masks to clean up a shot of a girl in a white outfit with sequins shot against a green screen. If the costume was not covered with sequins and it was not made of highly reflective satin the shot would have only taken about 2 minutes. Because of poor production and costume design, the 7-second shot took about 3 hours.