greenscreen stills at DVinfo.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 November 12th, 2014, 02:31 PM   #1
Regular Crew
 
Join Date: Feb 2007
Location: Colorado
Posts: 104
greenscreen stills

What's a good way to grab a frame with the background already made transparent via chroma-key? When I click copy to clipboard, I get the black background in my graphics program (paintshop). It also suffers from the jaggies and looks like it has anti-alaising turned off. I've also tried turning the field type to none but not getting very good results. Looking for high-quality stills from an AVCHD source. Running VP10c. Thanks.
__________________
"Shoot first and ask questions later"
Art Willig is offline   Reply With Quote
Old November 12th, 2014, 03:03 PM   #2
Inner Circle
 
Join Date: Nov 2005
Location: LOWESTOFT - UK
Posts: 2,123
Re: greenscreen stills

It sounds like the keying you used made a poor job of it - it's the matting out process that is critical not what you do after. If it has jagged edges the keying was poor. Could have been so many things - if you post a pic from the original green screen we can have a look.
Paul R Johnson is offline   Reply With Quote
Old November 12th, 2014, 07:57 PM   #3
Regular Crew
 
Join Date: Feb 2007
Location: Colorado
Posts: 104
Re: greenscreen stills

I noticed it's worse when I saturate the green.
Here's a raw frame with the fields set to none.
Attached Thumbnails
greenscreen stills-mime-test.png  
__________________
"Shoot first and ask questions later"
Art Willig is offline   Reply With Quote
Old November 12th, 2014, 08:17 PM   #4
Inner Circle
 
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,259
Re: greenscreen stills

Caveat: I've never tried this. Does Vegas support transparency in still caps?

Here are a couple things to try:

1. Make sure you're capturing to a still format that supports transparency. JPG doesn't. PNG does.
2. Be sure you're set on best/full when you cap. I know it was important with older versions of Vegas Pro, but IIRC this might have been fixed at some point.
__________________
30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.
Seth Bloombaum is offline   Reply With Quote
Old November 13th, 2014, 12:33 PM   #5
Regular Crew
 
Join Date: Feb 2007
Location: Colorado
Posts: 104
Re: greenscreen stills

Yes, I did all that initially.
I'm very surprised it doesn't support transparency.
__________________
"Shoot first and ask questions later"
Art Willig is offline   Reply With Quote
Old November 13th, 2014, 03:57 PM   #6
Inner Circle
 
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,259
Re: greenscreen stills

Well... it does for video rendering.

For the very few codecs that support transparency, Vegas works. Not sure I've gotten DNxHD to work with transparency in Vegas, but I've had success with uncompressed.

Which may be a possibility for you, depending on the goals of your project. How about a 1-frame export uncompressed AVI?

Possibly MOV in animation + / millions + might work as well. The codec supports transparency, but not sure about how Vegas works with this.
__________________
30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.
Seth Bloombaum is offline   Reply With Quote
Old November 14th, 2014, 04:18 AM   #7
Inner Circle
 
Join Date: Nov 2005
Location: LOWESTOFT - UK
Posts: 2,123
Re: greenscreen stills

I'm confused - is that a full resolution image? No way that is ever going to key properly. There aren't any clean edges in the image - has something gone adrift in the still capture?
Paul R Johnson is offline   Reply With Quote
Old November 14th, 2014, 11:37 AM   #8
Regular Crew
 
Join Date: Feb 2007
Location: Colorado
Posts: 104
Re: greenscreen stills

It's a frame copied to clipboard from VP then compressed in paintshop for an example.
I'll have to stay in VP, evidently, and perhaps use a better plugin.
I don't think any are free, though.
__________________
"Shoot first and ask questions later"
Art Willig is offline   Reply With Quote
Old November 14th, 2014, 11:52 AM   #9
Inner Circle
 
Join Date: Nov 2005
Location: LOWESTOFT - UK
Posts: 2,123
Re: greenscreen stills

It's mangled in Paintshop, the frame size is still pretty high as is the file size - can you extract a frame and not compress it - because whatever you did looks really bad, not clean at all. Not sure what happened?

I think I just realised what you did - you need to export the image as a frame, not a screen capture because that isn't the real image quality at all.

If you can't do that, how about just exporting 5 seconds of the video from the camera - then we could try the image on our suffering systems and see how it keys. Difficult to see from the screen grab, but there don't appear to be shadows, but there could be a bit of green spill from the screen on the edge, which might account for it?
Paul R Johnson is offline   Reply With Quote
Old November 14th, 2014, 12:17 PM   #10
Inner Circle
 
Join Date: May 2005
Location: Windsor, ON Canada
Posts: 2,765
Re: greenscreen stills

You can render an image sequence in Pro 10 (several formats to choose from) so that's another workaround for you to consider.
BTW, Pro 10 went up to 10.0e at the end so I recommend an upgrade to that just for the bug fixes alone and there were a lot in 10.0d and 10.0e.
Sony Creative Software - Download: Updates: Vegas
Mike Kujbida is offline   Reply With Quote
Old November 15th, 2014, 01:06 AM   #11
Regular Crew
 
Join Date: Feb 2007
Location: Colorado
Posts: 104
Re: greenscreen stills

Not sure what happened but I rendered an image sequence of one frame as a png and it shows a transparent background in Windows picture viewer. I then open it in paintshop and the transparency doesn't display. I think paintshop may be a little wonky.
__________________
"Shoot first and ask questions later"
Art Willig 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...

Professional Video
(800) 833-4801
Portland, OR

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

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

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

 



Google
 

All times are GMT -6. The time now is 03:49 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network