OBS has taken over camera default

[macasas]

Hello.
I installed OBS, tried it out for a bit then uninstalled it.
Now my system defaults to OBS whenever I want a camera.
For example, in browser, when I ask for the camera I get this. It does it other apps as well, but in some like zoom I am able to change it, in the browser I am not able to change it.

Perhaps it didn't completely uninstall and has left something behind in the Library? OBS is no longer installed, but it has not gone.

How can I get rid of this?
Thanks

 

[macasas]

It turns out that after all the usual suspects have been removed from ~Library, there is still something in /Library/CoreMediaIO/Plug-Ins/DAL which loads up as a virtual camera plugin.