With a rotoscoping tool, you can cut out your quad, but you're going to see artifacting if there is a lot of information in there. Painting out frame by frame, you could do this with Premiere and Photoshop, but it would take a long, long time to paint everything out.
RED can target a range of colors and do this just a little better than Vegas can, but again, you'll have some artifacts. Ifyou wanted to mask it all the way out, you could probably get a reasonably clean extract after rendering a few passes. Dependent entirely on what is in the background. If you have rocks, sand, sky, leaves, trees, clouds, etc, you will find this extremely difficult to get clean even with the best tools available. If it's mostly one or two shades of sand and sky, you'll be able to pull a fairly clean object.

Are you talking quake 3? If so, ust download GTKRadiant, make a room that's a solid green texture. place the quad next to a far wall, render just the BSP (no lights), run the level, recored it as a demo, then play it back and use the AVI comand (set it to 30) to output frames, then import your frames into Vegas.

Bingo, quad in Vegas with a solid neon green chroms keyable background.

Ahh...By 'quad' I thought WildRyder meant a quadrunner (atv) like we race around on out here in the desert. Duh! I don't play Quake, so wasn't aware there is a quad in that game.

Man! I see the big boys do it! In the words of my african heritage:

"HOW DO DEY DO DAT DOW?"

I've seen NFL Games where they show a "REAL" player (not animated) running with the ball and scoring a TD. Somehow, they cut away the entire background (which is multi-colored and textured), leaving the player only! Of course they've replaced the background with something else...How??

Usually by spending heaps and heaps of money.

I thought he meant Quake because I'm working on a short movie make with greenscreen Quake guys into the real world. :) I didn't realize there was an ATV called quadrunner. Maybe he can clear it up for us. :)

"HOW DO DEY DO DAT DOW?"

It's called "masking," and it's something some of us are hoping to see either in or as part of a plugin package for Vegas in the future.

As Kelly said, it is very expensive, because you have to pay someone to basically draw a line around the subject and keep tweaking that line, frame by frame, so that you always have the entire subject outlined, then you "take it out" or remove everything else that is not "the player scoring the touchdown."

Adobe AfterEffects can do this. You might be able to find a video with an example of it on this page.

Very tedious work...

I am talking about quads, ATV's, 4-wheelers, what ever you want to call it. My friend get high engouh air that all you see in the video is the blue sky. Would that make it easier?


F.Y.I.
I ride a Z-400.

That might do it. You could Chromakey on the blue as long as it's even enough. I would think that would make for very short and limited clips though.

You need to use a rotoscoping program as others have pointed out. Basically you manually draw the quad out of the background for each frame.

It might help to shoot with a fast shutter so there's no motion blur.

Hmm if the sky is bright enough you might be able to do a bluescreen with the sky. I have no idea if it works.

Or you might be able to create a MASK by duplicating the video track and adding the black&white FX and possibly using the contrast FX so that you get a perfect mask which will "erase" the sky for you.

I know I have seen some VEG or Tutorial somewhere that did somethign like this.. but I cannot recall where.