Alternatives to Webcams?

So I’m currently been playing through the yokai watch games and up to this point I’ve been just cropping QR code’s and centering them in a 480x480 image. I got about half way through them all and decided I should ask if there is any way to emulate a webcam on the desktop that citra can detect?

I tried using the iVcam app to use my iPhone as a webcam to use another major feature in the game, but just got a black screen on the preview and gave up rather quickly even though it worked with other programs like stream labs OBS. I don’t known if there are any programs that emulate a webcam that work with citra but if there is please let me know.