Need help with this effect..

dibbkd wrote on 6/29/2006, 6:32 PM

Couldn't think of how to describe it in the subject line, but how do you do that effect where a person is standing in a busy area and he is in "regular" motion but everything around him is zooming by.

Like you'd see a person in the mall with people wizzing by, or a guy in times square with the traffic zooming by him.

Comments

johnmeyer wrote on 6/29/2006, 6:32 PM

Green screen.

rs170a wrote on 6/29/2006, 6:37 PM

Aka chroma key.

dibbkd wrote on 6/29/2006, 6:46 PM

I understand how green screen works, but it doesn't seem like that's just it.

I've done a little green screen effects, nothing great, but I can do it. When I've done it, my subject is always "in front" of the video.

Like I've green screen'd myself on the moon, with moon behind me, or on a stage, with the stage behind me, etc...

But this effect I'm talking about has the subject standing there, and there's people coming from behind him to in front of him. I think you guys know what I mean, but I just don't see how that is just green-screened. There must be more to green screen than what I know.

I thought too the subject could actually stand really still and walk really really slow, then when I speed up everything else, they look normal speed.

rs170a wrote on 6/29/2006, 7:10 PM

Check out the How: Silhouette of moving person?? thread from a few days ago. Specifically, check out Stonefield's video as it's almost exactly what you're looking to do.

Mike

johnmeyer wrote on 6/29/2006, 7:11 PM

Multiple layer green screen (you can composite more than one layer: one for the background; one for the foreground, and then your talent -- won't be easy).

Jim H wrote on 6/29/2006, 8:19 PM

Have your main actor move really really slow with a slow shutter speed, then speed up the video. (what can I say, I'm low tech)