Green Screen Editing

gooberguy wrote on 5/18/2004, 5:47 PM
Lets say i was duning somthing in front of a green screen, how do i put somthing else instead of the green screen. ( foe example im there talking on the green screen, and then i put animations in the green screen and it looks like im talking to animations. )

I have vegas 4 and im not a really good user so please explain things.. Thanks a lot! Any help appreciated!

Comments

TheHappyFriar wrote on 5/18/2004, 6:33 PM
Ue the chroma key plugin. That's what it's for (it also has pre-sets, but you may need to change them).
[r]Evolution wrote on 5/22/2004, 6:14 PM
Track 1 = Green Screen Phootage
Track 2 = Whatever Background you want

After you place the ChromaKey filter on your Green Screen Phootage, you deactivate the Chroma Key plugin, select your range of Green, Reactivate the Chroma Key plugin, slide your faders till you get a desired look. You can also put a little Blur & Color Correction to further mask the Green 'halo' that you will have.

This is the 'quick & dirty' explanation. After you get this far, you will probably be back with more questions. VEGAS Chroma Key is far from the best.

I do customized realtor videos using the same female talent to GreenScreen/Voice over the custom parts. The production company that shoots the GreenScreen uses DVCPro, Avid Composer, & Ultimatte. There is no comparison between the two. VEGAS cannot compete. We have all sat down and tried multiple FX chains in VEGAS but it just doesn't compare. I can get it pretty darn close but we are thinking that the true difference lies in the DV compression. Everything they do is 1:1 from start to finish. VEGAS uses DV compression so as soon as it touches VEGAS it has lost some quality. Not a lot, but it is noticeable. <- Not dissin... Just honest

This should get you off to a good start though.
Blues_Jam wrote on 5/22/2004, 10:00 PM
gooberguy, the previous posts are correct but you may be missing the basic concept of "green screen editing" or chroma keying. You don't actually put any images on the green screen. When you use chroma key, you tell Vegas to make a certain color (green in your case but it could be any color) transparant allowing the track below (underneath) to show through the color you chose in the track you used chroma key on. If someone is wearing a green shirt in the chroma keyed track then the background track will show through the shirt too.

The chroma key allows you to set a tolerance percentage to accomodate shading variations in your "green screen".

If this explanation is too simplistic and you already knew then please accept my apology.

Blues_Jam
kameronj wrote on 5/23/2004, 7:25 AM
footage.
kameronj wrote on 5/23/2004, 7:26 AM
Oh yeah....and you need to be mindful when doing green screening that your actors really shouldn't be wearing the same colors as the color to be keyed out.

Else...they sort of vanish too.