Green Screen

[occasus]

Any1 here who can tell me how to use green screen effects in Adobe Premiere?

[untamed_aggression]

Right click the clip and select video options. There should be a transparency setting. Mess occordingly.

I'm going from memory here so forgive me if it's not all there.

My hatred for the thing called Premiere is well documented here.

[occasus]

OK thanx! So I suppose u don't prefer Adobe Premiere.. Do u use Final Cut?

[belovedmonster]

i think at the time premiere was unriveled... but now it seems to me that there are other packages just as good and better but no one bothers with them becos so many people already own premiere so it must be the best right??

i switched from premiere to video vegas 4 and i havent looked back since [img]smile.gif[/img]

<font color="#a62a2a" size="1">[ November 21, 2003 08:46 AM: Message edited by: belovedmonster ]</font>

[eidde]

to use the 'green screen' facility in Premier you need to have two pieces of footage:
1 - your background
2 - another image you intend to lay over the background - the Foreground. This will normally be some person or object filmed with an evenly lit green backdrop.

The intention is to 'cut out' the figure/object from the foreground and overlay them onto the background.

Once you have the footage import the background into your timeline, on line 1.
Import the foreground onto line 2 in the same place (so above your background).

Right click on the 'foreground' clip, and choose Transparency.
In the dialog box that opens choose Chroma Key and select your Green Background.
The Green colour in your foreground will then become transparent, showing the background through it.
You should be able to tweak the settings to get the image you want.

Then render the scene.

different colour work better in different situations and an evenly lit colour is essential.

try to keep sharp lines around your foreground object to minimise 'fuzz' - such as you get around peoples hair.

voila, and good luck

[occasus]

Thanx!! Aaa ni e bara f?r k?ra.. puss

[sn-films]

Good point about the hair. We did a project that required some blue screen stuff, and I had all kinds of problems with hair. A great example is the artifacts on the girl's hair in the following pic.

http://www.sn-films.com/Photos/Prisoner2/Hanger_a.jpg

We also had a lot of problems with any fast movements, such as one character punching another character. Etc.

As with any effect, I would highly suggest getting lots of test footage and playing around with the effect before you commit yourself to any projects that require it. Before we start on projects, I usually try to put together a series of proof-of-concept clips to get a feel for our limitations.

[occasus]

OK, thank you.. I think I'll wait a while before using green screen because all of my effects include fast movements. I played around a bit with the Chroma in Premiere and I understand now that the green area has to be pretty f&%?#ng single-colored. No shadows or stuff like that.. So what do you use? Like a sheet or something?

[belovedmonster]

yeah with greenscreen you just cant have any old vagualy green background and expect it to disapear like magic. It needs to be one exact colour and that means the lighting has to be perfect. (which also has to match the lighting of the background you are going to add or it wont look right).