General Green/Blue Screen Question at DVinfo.net

Gavin Thomas · September 15th, 2005, 03:21 PM

Hi,
Now this is on my mind and starting to bug me, can Green/Blue screen be used in a live recording, by this i mean can i have a green/blue screen behind my actress and whilst seeing the video live can i also have the green/blue screen doing something else the same time or is this not at all possible?

Thanks.
Gavin Thomas.

Nick Jushchyshyn · September 16th, 2005, 06:55 AM

There are dedicated hardware tools for this from companies like Ultimatte.
This is exactly how weather reports hare handled for live TV broadcasts.

There aren't any traditional, realtime software solution that I know of if that's what you're looking for.

Glenn Chan · September 16th, 2005, 07:09 AM

Some video mixers have keying functions built into them.

If you have time for post, you may not necessarily need to key things live. But I'd record a small amount of footage and key it right away to see if it keys well. You usually don't want to fix it in post (unless you have a celebrity or something, which makes it cheaper to fix it in post).

Nick Jushchyshyn · September 16th, 2005, 08:00 AM

Oh, I forgot to mention....
If you have a Mac, dvGarage has a plugin for Motion2 that is insanely easy and quick to use, contains calculations specifically for pulling clean keys from DV and works in realtime at SD resolutions:
Link: dvMatte Blast

At just $99, it's well worth a look .... if you've got a Mac with Motion 2.
(no, I'm not affiliated with dvGarage, just happen to have seen a demo of this a few weeks ago and was floored by the speed and quality)

Jim Rog · September 16th, 2005, 01:20 PM

Hi

Where can a blue/green be brought from in the uk?

September 15th, 2005, 03:21 PM	#1
Gavin Thomas Regular Crew Join Date: May 2004 Location: United Kingdom Posts: 64	General Green/Blue Screen Question Hi, Now this is on my mind and starting to bug me, can Green/Blue screen be used in a live recording, by this i mean can i have a green/blue screen behind my actress and whilst seeing the video live can i also have the green/blue screen doing something else the same time or is this not at all possible? Thanks. Gavin Thomas.

September 16th, 2005, 06:55 AM	#2
Nick Jushchyshyn Major Player Join Date: Feb 2004 Location: Philadelphia, PA, USA Posts: 548	There are dedicated hardware tools for this from companies like Ultimatte. This is exactly how weather reports hare handled for live TV broadcasts. There aren't any traditional, realtime software solution that I know of if that's what you're looking for. __________________ Nick Jushchyshyn Matchmoving, Compositing, TD imdb

September 16th, 2005, 08:00 AM	#4
Nick Jushchyshyn Major Player Join Date: Feb 2004 Location: Philadelphia, PA, USA Posts: 548	Oh, I forgot to mention.... If you have a Mac, dvGarage has a plugin for Motion2 that is insanely easy and quick to use, contains calculations specifically for pulling clean keys from DV and works in realtime at SD resolutions: Link: dvMatte Blast At just $99, it's well worth a look .... if you've got a Mac with Motion 2. (no, I'm not affiliated with dvGarage, just happen to have seen a demo of this a few weeks ago and was floored by the speed and quality) __________________ Nick Jushchyshyn Matchmoving, Compositing, TD imdb

September 16th, 2005, 07:09 AM	#3
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	Some video mixers have keying functions built into them. If you have time for post, you may not necessarily need to key things live. But I'd record a small amount of footage and key it right away to see if it keys well. You usually don't want to fix it in post (unless you have a celebrity or something, which makes it cheaper to fix it in post).

September 16th, 2005, 01:20 PM	#5
Jim Rog Regular Crew Join Date: Aug 2005 Location: PAL Zone Posts: 188	Hi Where can a blue/green be brought from in the uk?