For a project I need to film white silhouets of people for a video clip.
We will rent a studio. I was thinking of setting up a green screen so I can manipulate later in NLE and convert to black and white.
How would you guys do this instead? Are there better ways?

Another ways is to do a lumikey instead of chromakey. Just shoot against all black wall and create an alpha matte from the black with the lumikeyer. It's easier.

any other thoughts?

I agree with Steven. A lumikey is probably easier because you wont have to worry about lighting the background, although I also used a green screen - keyed out the background, desaturated what was left, raised the brightness as high as possible, and lowered the contrast all the way.. and that worked alright... you can see it on you tube -
http://www.youtube.com/watch?v=YwNt_LYpigI

the white silhouette is about 20 seconds into it.

How do they do it on the iPod commercials?

Thanks guys, I will do some tests with a black background which is much easier to setup.

We shot some folks against a black velvet background and lit the people. The problems was one had black hair which then keyed out. There was also several other places on their bodies that were dark enough to key out. I guess I could have played with it more but there was nothing to do about the hair. (We did have a hair light as well.)

Rob:-]

How do they do it on the iPod commercials?

Rotoscoping frame by frame- I'm pretty sure.

Can't you shoot against an all white wall, with no light on the front of the subjects.

Then add a high contrast filter. Take out anything on the people that remains by hand.

Then reverse the image.

I have only one day to setup and shoot. The white background suggestion could also work indeed. Thanks