Keyer on black screen

[Cooki]

Hello,
Instead of shooting on the green screen for Keyer, with my Panasonic HVX 200 I shoot my actor on on black screen. I'd like to make Keyer witht that black screen. (Putting landscaoe behind my actor)
Please help me !
Thank you
Cooki

 

[Joe Calabrese]

In the Chroma Keyer filter, just use the eye dropper tool to select the Keyer to key out the black background.

 

[bigbossbmb]

you'll want to try a Luma Key