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Partial green screen edge issues

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Max PrincePartial green screen edge issues
by on Apr 24, 2014 at 2:27:20 pm

I shot a presentation with a partial green screen that's being used as a board to display text. I've keyed out the green screen, but on the edge there's a thin blue-ish line that I can't get rid of with my knowledge of keylight. Any ideas to get this line out of the shot without having to mask it frame by frame?

Image of problem, red lines added in post for emphasis:


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Max PrinceRe: Partial green screen edge issues
by on Apr 29, 2014 at 4:07:05 pm

Sorry, but bumping for visibility. Any suggestions welcome!


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Michael SzalapskiRe: Partial green screen edge issues
by on Apr 29, 2014 at 5:28:59 pm

Can we see the "before" shot too, please?

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Max PrinceRe: Partial green screen edge issues
by on Apr 29, 2014 at 5:35:17 pm

Yes, absolutely. Here's the before as well as my keylight settings. right now I have two layers, bottom layer is keylight, and then theres a layer on top that I've masked halfway across to preserve the green elements to the left of the shot.




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Michael SzalapskiRe: Partial green screen edge issues
by on Apr 29, 2014 at 9:06:12 pm

I would use a couple of different instances of a keyer to key your scene (but only turn spill suppression on for one of them). I've never seen a good key come from only one instance of an effect.

You could probably even use the old Color Key effect to just knock that line out (in the stack before Keylight).

Then put a copy of your layer the left half visible only to fill in any areas of the plants that get knocked out.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Max PrinceRe: Partial green screen edge issues
by on Apr 30, 2014 at 2:27:30 pm

Thank you so much! Old color key is just what I needed, I had totally forgotten about that. With a few more layers with masks and old color key it's perfect. Much appreciated!


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Michael SzalapskiRe: Partial green screen edge issues
by on Apr 30, 2014 at 5:11:30 pm

No problem! Glad to help. :)

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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