The mac section below has been updated with a link to it.
Update June 2020: There is now an OBS virtual cam plugin for Mac. Until then we’re left with the following methods.
It looks like this feature will soon be natively supported in OBS, as Tobi Lutke (the founder of Shopify) has just recently placed a $10,000 bounty for the feature. If you’re using Windows, then congratulations, the installation is quite simple! If you’re using MacOS then ideally you’ll need a second monitor and need to run multiple programs. The installation complexity will vary depending on your operating system.
This is great if you’re giving company presentations, or just want to mess with your colleagues with a weird green screen background. You might want to use OBS as a webcam source as it gives you a plethora of production options, such as picture in picture, chroma key (green screen) etc.
