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Keying with a border?

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Irene Driessen
Keying with a border?
on Sep 3, 2013 at 5:57:13 am

Hi, I'm trying to work out how to make a look like this: moving "cutouts" with a border, either the one from the keying bg or not. Is that at all possible without frame-based work?

Example of the look I'd want to achieve.

I don't know where to start my search :)...


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Alan Okey
Re: Keying with a border?
on Sep 3, 2013 at 4:48:52 pm

This is fairly simple in a node-based compositor. The basic technique would involve creating a core matte and expanding it using a MinMax node.

Conduit is a great, inexpensive node-based compositing plugin for FCP. The DV Garage website has a ton of useful tutorials that will get you up to speed on node-based compositing.

The following video demonstrates creating a procedural garbage matte, but the technique used to expand the edges of the matte using a MinMax node is relevant to your question:

Also see the push to white video:

You could shoot your talent on a green screen, then use Conduit to create an effect like what your video example demonstrates.

The newest new version of Conduit is PixelConduit, and there is a free version that has all of the functionality needed for most operations. I'm not sure that it works with FCP 7, however - the website says that it's for FCP X and Motion 5.

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