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Applying Chroma key to a small area of a clip

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Loren Risker
Applying Chroma key to a small area of a clip
on Feb 27, 2016 at 8:49:03 pm

I feel like there might be an obvious answer but I can't figure this one out.

I have a small TV in the upper right corner of my frame with a green screen over the display so I can insert my own video in the TV.

I don't want to apply the Chroma Keyer to the whole frame though, just that little area in the upper right. I can't just matte it out because occasionally objects cross in front of the screen.

So does anyone have any techniques for applying an effect to just a portion of the frame?

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OutOfFocus.TV - Original series, music videos, mini-docs.


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Jeff Kirkland
Re: Applying Chroma key to a small area of a clip
on Feb 28, 2016 at 5:57:21 am

Stack two copies of the clip. Use the mask tool to remove the TV in the top clip, key the lower clip.

Jeff Kirkland | Video Producer | Southern Creative Media | Melbourne Australia
http://www.southerncreative.com.au | G+: http://gplus.to/jeffkirkland | Twitter: @jeffkirkland


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Loren Risker
Re: Applying Chroma key to a small area of a clip
on Feb 28, 2016 at 6:00:18 am

Thank you. That's how I normally do it, it just seems like there could be a better way, like what is built in to the color board effect.

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OutOfFocus.TV - Original series, music videos, mini-docs.


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Jeff Kirkland
Re: Applying Chroma key to a small area of a clip
on Feb 28, 2016 at 11:19:36 am

Sadly, for whatever reason, the Keyer effect doesn't have built-in masking. You can use the built-in effect masking with a third party keyer like the Hawaiki one but ultimately the mask effect is more versatile than the built in option anyway.

Jeff Kirkland | Video Producer | Southern Creative Media | Melbourne Australia
http://www.southerncreative.com.au | G+: http://gplus.to/jeffkirkland | Twitter: @jeffkirkland


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