ChromaKey with DVX100

Norm_Li

Norm_Li

Well-known member
Hey all,

What is the best type of Chromakey background required to use with the DVX? Bluescreen or Greenscreen and what are the advantages/disadvantages of each?

Any ideas of how to make a car look like it's moving (through motion in the windows) so actors can talk and not actually have to drive? I'm looking into the bluescreen backdrop large enough to cover all windows and hopefully in aftereffects to do some compositing.

I'm just afraid it may look cheezy? Will it work? Any advice would be great

Thanks!

Norm
No
 
Re: ChromaKey with DVX100

Not sure how it would look. Def would be a pain to nail it though.

I know you can use tricks with lighting (spinning lamps) that give the illusion of passing light and shadows.

Hmmm...

Im curious what everyone will say here.

I'd use Green though (something to do with skin pigmentation)
 
Re: ChromaKey with DVX100

About car moving I would forget to compose it with Chroma. It is possible but it is easy to fail and realize the trick.

I would put the car in the platform of a truck and off we go...
This is extremely convincing, good for camera location (on the platform) and not so complicate to get (you must have a friend with some truck or similar.

Just my opinion. If you get the truck, you will save time, postpro problems and will be very realistic (in fact the only false issue is the height of the car...) try to shoot in a quite horizontal angle, to avoid this problem.
 
Re: ChromaKey with DVX100

Check out the Special Features on the Frailty DVD(the movie starring Matthew McConneghy & Bill Paxton). It has a cool feature on the "poor mans"(think they called it that) setup. The DP was like a conductor of a symphony orchestrating a whole array of lights to simulate driving.

Green screen driving, makes me think of the Dukes of Hazard. If avoidable find an alternative, unless you have a studio with lighting experts. That being said, I'd test it if I were you as practise will make perfect.

The common way is as mentioned, being towed. This also helps with sound as you don't have to fight the sound of your own engine.

If you do green or blue screen, please post results. (not sure if this would be relevent, but I'dmake sure to check out actor eye color when deciding what color screen to use).
 
Re: ChromaKey with DVX100

Exactly what I was thinking with spinning lanterns. Use different colors also.

The Chroma background only works with Tarantino and Hitchcock films!
 
Re: ChromaKey with DVX100

Hal9000's exactly right. You get a low-to-the-ground flatbed trailer and drive the car up onto it. It can't be too high or the perspective will look wrong when looking at all the other cars.

Greenscreen will almost definitely look fake, unless you have an army of technicians who are very skilled with it.

Look at TV shows, as someone else mentioned -- frequently the car scenes will be "at night", so it's dark out and they just drag a light by to make it look like you're passing something.

In the old days it was done with rear projection, set up a white translucent screen behind the car and actually project a loop of footage onto it. Haven't tried anything like that with video technology... maybe it would work okay nowadays. Especially if it was slightly out of focus. Hmm. Probably wouldn't look overly convincing, but probably better than greenscreening would.
 
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