vMix has no API for enabling/disabling effects like Chroma-Key and hence once cannot easily enable/disable the effect through Companion/Streamdeck.
Workaround: you can create a Virtual input and apply the Chroma-Key there and then instead of enabling/disabling the Chroma-Key effect, switch between the inputs.
Recommendation: allow one to enable/disable effects like Chroma-Key through the API.
Vendor Response: known to the vendor under this feature request
vMix has no API for enabling/disabling effects like Chroma-Key and hence once cannot easily enable/disable the effect through Companion/Streamdeck.
Workaround: you can create a Virtual input and apply the Chroma-Key there and then instead of enabling/disabling the Chroma-Key effect, switch between the inputs.
Recommendation: allow one to enable/disable effects like Chroma-Key through the API.
Vendor Response: known to the vendor under this feature request