Basic Nuke Question

#1

I am trying to merge two ocean surfaces rendered on separate passes using the merge/ matte node in Nuke. I want to embed an alpha channel into one of them, I rendered it on a separate pass. So I have 3 passes A, B, and Alpha. How do I embed the alpha into the A channel to make this work?

thanks
Jeff

#2

I figured out the shuffle copy node.

derp.

#3

Just so ya know, you just need the copy node, not a shuffle copy. ‘A’ into your alpha source and ‘B’ into the footage you want the alpha with. Than into your merge! :slight_smile:

Cheers