This solution works best with a solid color backdrop (green screen). When using virtual backgrounds make sure you are not wearing anything green or shiny.
How to set up OBS
Install OBS (https://obsproject.com/download)
Click the ‘+’ to add a Scene to the Scenes Block (name it JunoCam-VBG) and Click OK
Click the ‘+’ in the Sources Block and select Video Capture Device
Select Create new (name it Camera) then Click OK
Select your camera from the Device drop-down list and click OK
Right Click the source you just made and select Filters
Click ‘+’ in the Effect Filters block and select ‘chroma key’ and Click Close
Drag the desired background picture stored on your computer and drop it in the Sources box
Add a checkmark to Deactivate when not showing if using more than one Scene setup.
You might need to adjust the Similarity slider to get Greenscreen to fade away.
Make sure the picture you just added is at the bottom of the list.
How to use OBS with a JUNO session
Open OBS and select the desired Scene
Click Start Virtual Camera
Open a Juno session
Click Video + Audio
Select ‘OBS Virtual Camera’ from the Choose Video Source dropdown menu
Select the desired Microphone from the Choose Microphone dropdown