Hello,

I'm assuming here that you are using a static camera (the Virtual cam compound) as implementing this method with a Tracked cam compound is not possible. What I suggest is feeding your input signal to two keyer modules. In each one of them, you can key a specific shade of green. You can also, use the cropping modules or the masking modules to get that specific part of the frame you want to key (in your case floor and wall). 

Finally, use the placer module to place the two feeds on top of each other, then send the output to the Test 1 input tab of your Virtual Cam compound.

Best regards,

If you use a static camera, isn't the "clean plate" method even better : each pixel of the clean plate is it's own key value.

Hello,

Eric is totally right. The Clean Plate method is better in this case. 

You can check it out here: https://aximmetry.com/learn/tutorials/for-studio-operators/using-the-advanced-b-keyer/#background-color

Best regards,