Experimental support for OBS Virtual Camera has been introduced with Genymotion Desktop 3.10.0. Make sure to upgrade your copy of Genymotion Desktop if necessary.
Genymotion Desktop now supports OBS Virtual Camera on Linux and macOS! It still does not work on Windows, but we are working hard on it for our next releases.
For more details, please refer to Genymotion Desktop 3.10.0 changelog.