You are viewing an archive of the old fxhome.com forums. The community has since moved to hitfilm.com.

Green screen avi partly hidden by a mask [ANSWER]

Posted: Tue, 13th Mar 2007, 9:10am

Post 1 of 6

callagan

Force: 1000 | Joined: 13th Mar 2007 | Posts: 9

VisionLab User

Gold Member

Hello, and sorry for my poor "english". I'm French.
I'm trying the demo versions of the FXHOME programs in order to kwow if I can realize a specific project.

I want to make this effect:

1) create a movie (#1) of a person (this person will have a 'ghost' specialFX) on a green screen.
2) create a movie (#2) of stairs.
3) import movie #1 of the 'ghost' into movie #2 but some parts of movie #1 are hidden by some parts of movie #2.

I can understand both techniques: green screen and masking.
But I can't use them together...

Is it possible ?
Thank you for your help.
Posted: Tue, 13th Mar 2007, 10:06am

Post 2 of 6

Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker Windows User

FXhome Team Member

Check out these two tutorials for some help:

http://fxhome.com/support/vidtutes/?t=3&f=%2Bcat%3A1&cat=1

and

http://fxhome.com/support/vidtutes/?t=16&f=%2Bcat%3A4&cat=4
Posted: Tue, 13th Mar 2007, 5:34pm

Post 3 of 6

callagan

Force: 1000 | Joined: 13th Mar 2007 | Posts: 9

VisionLab User

Gold Member

Thank you but I've already watched that.
It's using both techniques together that is difficult.

In fact, I want to hide some parts of the green screen movie.
But the shapes of the mask is based on the other movie (where the green color is).
Posted: Tue, 13th Mar 2007, 7:12pm

Post 4 of 6

DavidLittlefield

Force: 1905 | Joined: 10th Oct 2006 | Posts: 469

VisionLab User VideoWrap User Windows User

Gold Member

For "greenscreen mask" you use "Garbage Matte" instead of regular Masks
Posted: Wed, 14th Mar 2007, 9:31am

Post 5 of 6

Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker Windows User

FXhome Team Member

FXhomer16748 wrote:

In fact, I want to hide some parts of the green screen movie.
But the shapes of the mask is based on the other movie (where the green color is).
I'm not really sure what you mean. You apply the mask to the object that you want it to affect, but the shape of the mask can be anything you want.

Therefore if you want Object A to be obscured by the tree in Object B, you apply the actual mask to Object A but draw it to cover the tree in Object B.
Posted: Wed, 14th Mar 2007, 9:58pm

Post 6 of 6

callagan

Force: 1000 | Joined: 13th Mar 2007 | Posts: 9

VisionLab User

Gold Member

Thank you for your help.
I think I have the solution.

I simply had to draw the masks on the green screen layer, NOT on the movie that replaces the green color...

I made the mistake because the mask follows the shapes that are on the 'background' layer, but has to be created on the green screen layer in fact.

Thanks again.