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New to Blender, have a quick question about masking. I am greenscreening some photos, however some areas do not cut out correctly (space between ladder notches), so I have resorted to masking and using nodes in Compositor. I was able to add a mask around the object via Movie Clip Editor, however when I add another mask to the space between the ladders (adding a square between), this second mask does not show and the greenscreen is still visible. I am using nodes similar to how CG Geek on Youtube has in his tutorial. A second mask option does not appear when I include another Mask input. Any help is appreciated!

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  • $\begingroup$ if there is no second mask in the list, maybe you have a single mask with two areas. in this case you need 1 mask node in the compositor. you can add more than one area in the mask. $\endgroup$ – Mechanic May 18 '20 at 2:02
  • $\begingroup$ I have added a second area, but the second area does not show in the first mask. I am adding a second mask, how would it connect in the keying or AlphaOver nodes? $\endgroup$ – velocipede1895 May 18 '20 at 2:22
  • $\begingroup$ you can add two masks with color add node. the result is both masks white in black background. so you can use it as alpha over input. $\endgroup$ – Mechanic May 18 '20 at 2:29

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