Green Screen

QE wrote on 8/19/2004, 7:44 PM

I have a video animation of a house that has a set of doors opening, leading into the house. When the doors open the backgound in the doors is green allowing me to put my video footage there. How can I acheive this effect in Vegas 5, is it alpha channel or luminance?

Thanks

Comments

Cheno wrote on 8/19/2004, 8:20 PM

Use the "chroma key" fx in your fx chain. Take the eyedropper and choose the green color behind your doors... voila!

Mike

QE wrote on 8/19/2004, 8:50 PM

Hi Mike I tried that and it doesn't work. How should the two video tracks be placed? Should the animation be on the same video track as the video clip? Or should the animation be on top of the clip?

B.Verlik wrote on 8/19/2004, 11:08 PM

You want the video, that's going to show through the animation doors, on the bottom track. Put the animation on top and use 'Chroma-key' effect as described above. If it doesn't look that good or if some parts of the doors keep showing through, you have to have the green an even shade where ever you want it to become invisible for the video. Watch for shadows and reflected light.

Fleshpainter wrote on 8/20/2004, 4:04 PM

While setting up the chromakey on the top track, it is sometimes helpfull to temporarily place a bright color on the bottom track to allow you to see what you are doing until the adjustments are made. Use a color which doesn't occur on the top track. When you're done, delete it.