On linux:
Is it actually possible to record your screen as a webcam output or record your audio output as a microphone input?
I know many gaymers who wanted to play dank meme tunes on call of duty have tried and failed to do this. I've never been able to figure it out and now I'm just curious if it is even possible.
As long as you're running PulseAudio/JACK and running X11/Xorg It should be pretty easy to set it up
>webcam output
v4l2loopback and ffmpeg
>microphone input
set your input device to stereo mix
You really didn't try hard enough to figure this out.