Support for virtual webcams
Virtual webcams can be created by Logitech software, COTS stuff like Manycam, or (what I use) the free OBS. It allows you to do things like rotate, crop, blur, add virtual backgrounds, whiteboards, slideshows, etc etc, as well as full control of colors. Other video chat providers such as Slack and Google Meet recognize these virtual webcams alongside the physical ones. Screen does not.