Difficult chroma key effect?

mel58i wrote on 7/16/2005, 11:35 AM

I'm over here in uk and planning a video for our heritage society.
As all we have now is photos of an old town, I thought about dropping live actors into a background of old photos by using chroma key.
No real problems so far - just film the actors against a blue (green) screen and key out the background and drop them into an old street scene.
Now comes the problem - the old photos are sepia tone and it would be nice to convert the actors into sepia to blend in.
But if I did that before the keying then that would also convert the background (blue or green) into something different.
Is there any way to do this on the composite after the keying has taken place?
Seems messy to me, but any one got any ideas?
Using V4 by the way.

Comments

p@mast3rs wrote on 7/16/2005, 11:47 AM

I would key your footage first and then apply the sepia to the actors after the key has been made. That way you dont lose any of the actors. Does that make any sense? I am sure someone can explain it better than I.

Stonefield wrote on 7/16/2005, 11:48 AM

You can do this no problem. Once you have your Chroma Key filter in the proper place of your fx chain, all other effects after that will only be done to your foreground element and not the green/blue background.

You have a couple of options then. Use either the Film Effects filter or the Sepia filter. You can play around and match to your background plate as you see fit.

Stan

Liam_Vegas wrote on 7/16/2005, 11:55 AM

Just add the "Sepia" color FX after the CK FX.

mel58i wrote on 7/16/2005, 12:19 PM

Thanks to all for replying. It's funny - if you don't use something for a while, you forget its existance!

Fool me, of course I can use filters in a chain - key, then colour balance or sepia.

Just tried it out on a test piece and perfect.

Thanks again all you young clever beggers!

Mel.