Image border trouble

the picture is tiny, but I'm guessing it's a premult thing... however you're placing the one layer over the other, try turning off premult...

Patrick

Doesn't happen for me, but I'm just using the version of the cracks file
from a screenshot. I don't have the original file. My guess would have
been some sort of premult issue, but you say you've checked that out.

I wonder if there's some weirdness around the edges of the cracks image itself.
What if you just follow the cracks FileIn with a Crop node, and shave off
the edge?

Have you tried this?
http://www.videocopilot.net/support/
The people at Video Copilot are actually paid to answer your questions.
Here on the Apple Forums, all we get are little virtual stars
when people remember to mark our responses.

Good luck! Let us know if you are able to solve the problem.

I saw a youtube tutorial from appleshakeguru that this occurs when keying footage sometimes and he suggested using a SetBgd node. Although maybe that's not how you got the black line. Might be worth a go to dig up that youtube clip and see if it helps. You could also roto with a switchmatte if crop isn't working.

Oops..sorry I didn't remember the correct node name. It's called SetBGColor under the color tab and I think you make it the color that you're keying and it fixes your line. It seems you have figured it out though so that's cool. That's the really cool thing about Shake IMHO is that there are at least 2 or more ways to solve problems. I would guess the only problem could be it might take longer to render or use more memory with certain solutions but it's just CPU cycles.