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Keying P2 material (again)
Posted by Tim Mclaughlin on March 12, 2008 at 3:47 amRecently shot some greenscreen 720 23.98 material.
My AE artist complained about the keying, the edges of the on-screen talent appear quite soft over the BG. Everything looks great before the key (Keylight) is applied, then gets soft or jaggy around the edges.
Anyone have a better workflow for dealing with P2 greenscreen?
Ultimatte AdvantEdge? Primatte?
Thanks!
Tim McLaughlin
Vince Becquiot replied 18 years, 1 month ago 4 Members · 8 Replies -
8 Replies
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Shane Ross
March 12, 2008 at 7:56 amYup…I had this issue:
https://lfhd.blogspot.com/2006/09/dvcpro-hd-green-screening.html
I used SHAKE to fix this. Still used Keylight, but made a HOLD OUT MATTE to fix the gamma gain. I think AE might give the ability to do hold out mattes as well…not sure.
Shane
GETTING ORGANIZED WITH FINAL CUT PRO DVD now for sale!
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Vince Becquiot
March 12, 2008 at 9:21 pmShane,
While I see that you have found a good method, I find Primatte to be a great keyer, with no added noise.
Here’s a quick key on the sample you provided on your wesite. Hope it’s alright for me to post it here.

We would probably need a full res clip to see the actual results, but as you can see it seems to work pretty well.
I use it very often with DVCPro HD with great results, and its light wrap feature makes it a winner in my opinion.
Cheers,
Vince
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Shane Ross
March 12, 2008 at 9:27 pmThat’s fine to post thre result. Can you post the original shot and the PRIMATTED one, so I can see a comparison.
I might STILL have that footage somewhere…lemme dig. I can send one full frame, or maybe a second or two.
I swore I tried Primatte and had the same gamma shift issue. But that was a while ago.
Shane
GETTING ORGANIZED WITH FINAL CUT PRO DVD now for sale!
http://www.LFHD.net
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Vince Becquiot
March 12, 2008 at 9:45 pmHere you go! This is with primatte 3, just a basic key and 30 second matte clean up, no choke or feathering.
Can you tell it’s a slow day over here?
My apologies to Ron for messing up the page formatting on this one…

I never noticed a shift unless there some abuse on the spill remover.
That alternative is really for PC users who don’t have shake available. That plugin isn’t axactly cheap either.Vince
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Shane Ross
March 12, 2008 at 9:53 pmAhhh…nice. Look at that. Was this done in AE?
I have Keylight with AE, and Keylight and Primatte with Shake, and I swear I tried Primatte without success. Guess I’ll have to give it another looksee.
Thanks Vince.
Shane
GETTING ORGANIZED WITH FINAL CUT PRO DVD now for sale!
http://www.LFHD.net
Read my blog! -
Ron Lindeboom
March 12, 2008 at 10:14 pmLooks like we need to have a “spill remover” on the site, as well.
:o)
No apology needed. It’s why we have the pages set as they are.
We figured as long as not many people blow the site out of its wrapper we are okay with it. If it happens a lot, well we will likely have to do something about it eventually.
Best regards,
Ron Lindeboom
https://www.linkedin.com/in/ronlindeboom
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Vince Becquiot
March 12, 2008 at 10:23 pmWhat about giving away a 1080P screen to every Cow user !
Problem solved 🙂
Vince
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