macOS : stream a "false" prerecorded image/video to my webcam I want to feed my webcam with a "false" prerecorded image/video (as allowed camcamx soft on mac).

How to do ? Do you know a method or software? An alternative to camcamx ?

I use MacOS 10.11 Sierra on MacBook Pro 2014
Thank you for your help.
Open Broadcaster Software
Thanks to work by John Boiles, can use Open Broadcaster Software (OBS) and it's virtual camera feature on macOS.
OBS is free and open source.