Chroma key/green screen question at DVinfo.net
DV Info Net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.

Reply
 
Thread Tools Search this Thread
Old March 4th, 2013, 05:04 PM   #1
Major Player
 
Join Date: May 2011
Location: W. Roxbury, MA
Posts: 206
Chroma key/green screen question

Hi everyone

Has there been a posting here, on how you can do green screen?

I only saw one video on YouTube, but the audio is horrible and could not hear the instructions. I haven't used the older version of Vegas Pro, so I don't know if it's totally different or the same when using green screen.
Robert Lee is offline   Reply With Quote
Old March 4th, 2013, 05:52 PM   #2
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,770
Re: Chroma key/green screen question

Nothing has changed with respect to chroma keying in Vegas no matter which version you have.
I will say that lately I've become a fan of using blue instead of green as I find I get a much better key with it.
Keith Kolbo has two great tutorials, one on keying and one on lighting, on his site at AMediaProf.com / VideoEducator. net - Tutorials
Mike Kujbida is offline   Reply With Quote
Old March 4th, 2013, 09:35 PM   #3
Major Player
 
Join Date: May 2011
Location: W. Roxbury, MA
Posts: 206
Re: Chroma key/green screen question

Thanks Mike. I do see some places sell Blue screen, but I always thought green is the way to go, Is blue better than green?
Robert Lee is offline   Reply With Quote
Old March 4th, 2013, 10:17 PM   #4
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,770
Re: Chroma key/green screen question

Robert, I've done two blue screen shots recently and found that blue keyed much better than green.
For an example (I apologize for the not so good quality of the video but it was SD video and I had nothing to do with the upload), go to St. Clair College - Alumni Association - Alumni of Distinction - Past Honourees and watch the interview with Dan Badour (6th one from the top). He was shot against a white cyc lit that was lit with one Lowel Tota fixture light with a blue gel on it. The blue was replaced with some basic Generated Media in Vegas. All things considered, I thought it turned out pretty well.
Mike Kujbida is offline   Reply With Quote
Old March 5th, 2013, 03:41 AM   #5
Trustee
 
Join Date: Oct 2009
Location: Central Coast Australia
Posts: 1,046
Re: Chroma key/green screen question

I remember only seeing blue in all the doco's when I was a kid.
Why did they change to green?
Attached Thumbnails
Chroma key/green screen question-star-wars.jpg  
__________________
http://vimeo.com/livewebvideo
Gerald Webb is offline   Reply With Quote
Old March 5th, 2013, 10:38 AM   #6
Inner Circle
 
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,420
Re: Chroma key/green screen question

As I've heard it, blue was traditional in film work, with green as a backup for subjects that were blue-colored.

Someone (?) determined that in the DV25 standard, green was going to work better with the reduced color resolution of 4:1:1. I don't know if that determination was theoretical or also based on rigorous testing, but it has become an article of faith that green is better for all digital video.

These days, many of us have access to 4:2:2 recording. Many of us have had enough experience to realize that, for quality and ease of keying, the single most important variable to control is green spill in the original shoot. We have much more sophisticated keying software, (although Vegas is a little behind the curve on this, there are third-party plugins).

I'm thinking that greenscreen for DV25 was discussed by Adam Wilt back in the day? Will have to look...

I have a blue canvas in storage, I should pull it out and try it!

***edit***
Adam Wilt didn't post any of this on his excellent technical guides to DV. There are a few references out there to green vs. blue regarding chroma subsampling, but rather than following that I'm going to find my blue screen and check it out against green!
__________________
30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.

Last edited by Seth Bloombaum; March 5th, 2013 at 04:57 PM.
Seth Bloombaum is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 11:01 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network