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by ShakataGaNai 1850 days ago
Instead of "altering" a stream, you use OBS to take the camera input, then output it via virtual cam. Once you have the basics setup, you can get fancy setting up scenes, overlays, color corrections etc. Works great for green screens as well.

https://www.nextofwindows.com/how-to-use-obss-virtual-camera

(There are other articles that talk about using a plugin, that isn't required after OBS v25, they integrated the feature).