Grass Valley Forums Facebook   Twitter   YouTube  

Go Back   Grass Valley Forums > Editors > Editing with EDIUS

Reply
 
Thread Tools Display Modes
Old 05-16-2007, 12:31 AM   #1
Richtiger
Member
 
Join Date: May 2007
Location: Bendigo Australia
Posts: 78
Default Chromakey

Hi everyone,
I am wondering what settings you guys use to obtain a good bluescreen key.
I am trying to put people on a white background but I'm finding that the subjects have dark outlines around the edges. These are hardly visible when keyed over a darker colour background.
The end result I'm looking for is similar to the Australian Chanell 10 station ad "I Believe" this shows black & white people over a white textured background. I used a blue painted wall for the shots, well lit and bright without shadows. My best results so far have been mixing chromakey with chrominance and monotone. This is fairly complicated and I lose the ability to put another layer behind the people.
I realise it's tricky to get good keys but it seems a bit hit and miss to me.
I've tried After Effects Keylight but it's no better ..... any hints or ideas?
By the way, does anyone know if theres a chrominance filter in After Effects?
Richard
Richtiger is offline   Reply With Quote
Old 05-16-2007, 12:35 AM   #2
Roy Colquitt
Member
 
Join Date: May 2007
Location: Columbia, Maryland
Posts: 90
Default

What tools do you have at your disposal?
Roy Colquitt is offline   Reply With Quote
Old 05-16-2007, 12:52 AM   #3
Roy Colquitt
Member
 
Join Date: May 2007
Location: Columbia, Maryland
Posts: 90
Default

Quote:
Originally Posted by Richtiger View Post
By the way, does anyone know if theres a chrominance filter in After Effects?
Richard
Missed that -

If you are referring to isolating a color, Edius called this/does this through its "chrominance filter." Other programs can do the same thing using different methods that go by different names.

To do it in AE, you could find tutorials all over the Internet. I'd suggest doing an web search for "After Effects" + "Pleasantville." You'll come up with more than one way to do it. You could also search "leave color" + "After Effects."
Roy Colquitt is offline   Reply With Quote
Old 05-16-2007, 02:48 AM   #4
antonsvideo
Senior Member
 
antonsvideo's Avatar
 
Join Date: May 2007
Location: Sydney
Posts: 22,315
Default

at this stage, the Edius chroma keyer does not have a matte choker

so for now, I use BorisFX9 as a filter and add the chroma key and the matte choke, the matte choke not only allows shrinking of the key area to kill the outline, but also allows hey edge softening, this is great

BorisFX requires rendering
__________________
Anton Strauss
Antons Video Productions - Sydney

EDIUS 9 WG with Matrox MXO2, Gigabyte X299 UD4 Pro, Intel Core i9 9960X 16 Core, 32 Threads @ 4.3Ghz, Corsair Water Cooling, Gigabyte RTX-2070 Super 3X 8GB Video Card, Samsung 860 Pro 512GB SSD for System, 8TB Samsung Raid0 SSD for Video, 2 Pioneer BDR-209 Blu-ray/DVD burners, Hotswap Bay for 3.5" Sata and 2.5" SSD, Phanteks Enthoo Pro XL Tower, Corsair 32GB DDR4 Ram, Win10 Pro
antonsvideo is offline   Reply With Quote
Old 05-16-2007, 02:59 AM   #5
WTS1
Member
 
Join Date: May 2007
Location: Wisconsin
Posts: 51
Default

I'm not sure I can envision what you are describing. Are the people all white or black (ie basically a white or black silhouette) as overlays on a background or other layers?

Jim
WTS1 is offline   Reply With Quote
Old 05-16-2007, 03:16 AM   #6
Roy Colquitt
Member
 
Join Date: May 2007
Location: Columbia, Maryland
Posts: 90
Default

http://youtube.com/watch?v=PxnrLtQlxv0
Roy Colquitt is offline   Reply With Quote
Old 05-16-2007, 03:39 AM   #7
Richtiger
Member
 
Join Date: May 2007
Location: Bendigo Australia
Posts: 78
Default

Thanks for the replies guys.
I use Edius primarily for editing but After Effects for compositing. If the chromakey was clean in After Effects I would not have a problem. Also I can't transfer a "better" chromakey from Edius into After Effects as there is no Alpha so I'm trying for any workaround I can find.
There seem to be many adjustments for fine chromakey details in After Effects Keylight but it's pretty hit & miss and I'm getting nowhere.
One of my subjects is a bald man and it's particularly hard to lose the dark outline around his head, this is not quite as noticable with dark haired people and as I said if the background is dark in colour the problem isn't nearly as obvious. But for this particular effect I need a white background.
What other programs do a better key, and can I transfer these with alpha into After Effects?
Richard
Richtiger is offline   Reply With Quote
Old 05-16-2007, 03:43 AM   #8
WTS1
Member
 
Join Date: May 2007
Location: Wisconsin
Posts: 51
Default

Ahhh....now I get it. Leave it to Roy and YouTube to set me straight. :)

I'd use Serious Magic for this. If you have a decent blue/green screen, extracting your foreground is a snap. It's now integrated into Adobe's product line.

Like others have posted here, there are a number of apps that give you greater control over the extraction than Edius. Once you have the foreground extracted, you can bring it back into Edius and layer it above whatever background you'd like, apply the monotone filters, etc.

Jim
WTS1 is offline   Reply With Quote
Old 05-16-2007, 03:45 AM   #9
WTS1
Member
 
Join Date: May 2007
Location: Wisconsin
Posts: 51
Default

Quote:
Originally Posted by Richtiger View Post
Thanks for the replies guys.
What other programs do a better key, and can I transfer these with alpha into After Effects?
Richard
You can transfer the alpha into other applications that support it (like AE). I have used it quite a bit in Motion.

Jim
WTS1 is offline   Reply With Quote
Old 05-16-2007, 04:28 AM   #10
Roy Colquitt
Member
 
Join Date: May 2007
Location: Columbia, Maryland
Posts: 90
Default

As Anton said, the Continuum Complete chroma key filter that's included in Boris FX is excellent. It plugs into Edius...I believe directly into AE as well.

Rich, it sounds like you might be doing a little stabbing in the dark trying to get a good key.

With chroma keying, you really have to take certain steps and use subtlety in adjusting the proper parameters.

A two step process (which generally works without a lot of tweaking in Boris) is (1) apply the chroma key filter and then (2) apply a matte choker.

Try those two steps in After Effects and see if you get different results.
Roy Colquitt is offline   Reply With Quote
Reply
 
Go Back   Grass Valley Forums > Editors > Editing with EDIUS
 

Bookmarks

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
chromakey robbin Editing with EDIUS 20 02-05-2010 06:15 AM
Edius 5 Chromakey Problem WMPTV Editing with EDIUS 6 02-04-2009 04:02 AM
Make video black and white with ONE color item like a red dress or rose? Chromakey? skybrady Editing with EDIUS 4 11-07-2008 11:24 PM
Edius Chromakey Jerry Editing with EDIUS 1 06-23-2008 02:25 AM
Creating ‘transparent’ video using Chromakey 7hbg Editing with EDIUS 3 05-31-2007 12:28 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are Off
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 02:54 AM.


Copyright © 2014 Belden Inc. All rights reserved.