Adjusting passes to integrate into the footage

…So we have our passes.…They're split out.…We're ready to start building our composite.…So let's make a little room down here and…bring this over here.…Let's hit M on our keyboard, bring up a merge…node and we will put A, which is our flag.…Over B, which is our plate.…Now let's look through this last merge net that we have.…And we'll select it at one on our keyboard.…Mouse over the viewer with RGBA selected, hit A for alpha.…And what do we see?…We see some holes.…So that's not good.…We don't want any of this to appear transparent or have holes in it.…

So we need to grab the alpha channel from somewhere else.…And we can use a copy node to do that.…I hit K on the keyboard to pull that up.…So let's grab the alpha from further upstream where…it was still, was a solid white time offset.…Then we'll copy that into B and reroute this pipe here.…What that's doing and it's saying it's copying the…alpha from the A side, into the B side.…So now, if we look through that, our alpha is repaired.…I shouldn't say repaired.…

It wasn't broken to begin with, but we're…