Chroma key in Davinci Resolve?

[Tom Evans]

I need to do a simple chrome key on a green screen backgroun to visualize how the final image will look like when doing the grade. How do I do that in Davinci Resolve?

[Chris DiBerardino]

If you right click in the node window, you can add an alpha output.  Then key the green in a node, attach the alpha output of the node to the alpha output in the node tree, and voila.  You just need to have the plate on layer 1 and your keyed footage on layer 2.

[Nicolas Hanson]

Now with the Fusion integration you can drag the Delta keyer (or Chroma keyer) down on the line, do a simple key and it will update automatically in the color tab. It's fast and you don't need any Fusion knowledge to do that.