green screen problems

19nate79 wrote on 7/17/2012, 8:57 AM

i got 99 of but a ##### ain't one.

ok i used a green sheet instead of a screen (figured i try one on the cheap before i plopped down $80). on my video when i place myself into a picture, i am somewhat transparent. how do i get that to go away? i want to place myself into another video and this time i can't be transparent. i also want to reedit some older movies and put myself in them.

help?

Comments

19nate79 wrote on 7/17/2012, 9:35 AM

also, do any of these programs have a brush or similar tool so that you can edit out what you don't want by clicking on it?

musicvid10 wrote on 7/17/2012, 11:51 AM

"ok i used a green sheet instead of a screen"
Anything with cotton content or synthetic dyes is unlikely to work because of UV and IR reflectivity, respectively.

Tim L wrote on 7/17/2012, 12:04 PM

The toughest part of getting a good green screen result is getting the green screen evenly lit. If your green screen has shadows on it (from the person standing in front of it) or has wrinkles, bright spots, etc., you will have trouble getting a good key. Make sure everything is lit brightly and evenly. Shooting outdoors on an overcast day can help. Shooting hi-def definitely helps.

Here is an older link that gives a basic, step-by-step cook book method for using the Chroma Key features in Vegas:

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=12&MessageID=745339

ADB wrote on 7/20/2012, 5:01 AM

Have a look at Blender 3D (free). It gives much more flexibility for green screening. You can do just about anything. Here's an example:

ADB wrote on 7/21/2012, 7:18 PM

More green screen enhancements coming in Blender 2.64, out soon.
"Two new nodes which are aimed to make greenscreen keying easier. First one is Keying Screen which produces gradiented plate to deal with uneven color of green screen and another one is new keying node which allows to create mattes faster. "