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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 :)...

Thanks!


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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.

http://www.dvgarage.com/conduit-2

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:

http://www.dvgarage.com/storage/conduit-2-samples/Conduit2_ProMatte_3.mov

Also see the push to white video:

http://www.dvgarage.com/storage/conduit-samples/conduit2_push2white.mov

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.

http://pixelconduit.com/index.html


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Dave LaRonde
Re: Keying with a border?
on Sep 3, 2013 at 5:38:54 pm

Either Motion or After Effects can do that trick, too.

How about FCP itself? Not unless you enjoy lots of extra work: it's an editing application and not a compositing application.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Mark Suszko
Re: Keying with a border?
on Sep 4, 2013 at 2:28:16 pm

You could import the video into photoshop as stills, with alpha channel, and apply the Stroke effect in Layer Styles. Makes the edge color and width selectable. I *think* you can do this in Apple Motion, for sure you can in AfterEffects.


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Mark Suszko
Re: Keying with a border?
on Sep 4, 2013 at 5:01:41 pm

So, I played around in Motion for a minute, and found how you do this. Your footage needs to be keyed first, but then just bring it into Motion and add Filter>Glows> Outer Glow. You get a 2-toned border to start, but this can be changed manually to create the white edge you want.



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Irene Driessen
Re: Keying with a border?
on Sep 12, 2013 at 8:18:00 am

Thanks very much, I am going to try this!!


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