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Masking a grade object [ANSWER]

Posted: Thu, 26th Apr 2007, 8:10pm

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nfsbuff

Force: 2060 | Joined: 27th Jan 2003 | Posts: 175

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How do you apply a mask so that a particular grading filter doesn't affect the masked part? Short of duplicating the video layer and cutting out the parts I don't want affected that is...

Example. I have a shot in which actors wearing green camo are against a green screen. (Bad use of screen color, its a long story. Don't ask.) Using the Spill Suppression filter, the key comes out great, but the camo has lots its natural green hue. A quick mask would solve the problem, yet I can't seem to be able to apply a mask to a grading filter. What am I missing?
Posted: Thu, 26th Apr 2007, 9:07pm

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pixelboy

Force: 3000 | Joined: 13th Feb 2005 | Posts: 439

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Are you sure you're using Grade Objects (found in the "Effects" menu)?
A grade object can be masked the same way any other object can. If the filter is applied directly to your clip, however, you won't be able to mask the filter separately.
Hope that helps!
Posted: Thu, 26th Apr 2007, 9:13pm

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nfsbuff

Force: 2060 | Joined: 27th Jan 2003 | Posts: 175

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No, I was indeed asking about masking a filter, and not an object. Oh well, guess I'll have to stick to duplicate layers. Thanks.
Posted: Thu, 26th Apr 2007, 11:06pm

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Wizard

Force: 5941 | Joined: 18th Jul 2003 | Posts: 555

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I think you may have misunderstood what pixelboy was saying, nfsbuff. A "Grade object", is an object that you can add to the timeline that, once grading filters have been applied to it, will grade every layer beneath it. This can be found in the "Effects" section of the "Toolbox" (found on the right).

Just like any other object on the timeline, grade objects have a mask toolset, and therefore, can be masked. If you add a grade object above the layer you would like to grade, you can then simply mask the area of the footage that you would like to remain unchanged. Just remember to select the "mask" track within the grade object, instead of the footage.

Happy masking.
Wizard.