Hey Stadia team great to finally stream to youtube, will we get the option to have webcam?
Have a Nice Day Still
From Happy Cloud Gamer
You can use other sources like a webcam when you use OBS.
For more info about this and how it works please check the support page.
If Google Stadia is sending the stream directly to YouTube, then I'm not sure how using OBS is a viable option. I believe people would like to use their camera with Stadia and cut out the need for using things like OBS. This would likely entail Google building a fully functioning streaming interface for Stadia to support cameras, different screens, layout, etc ...
Adding camera support directly into Stadia would be a nice next step.
Would love to see that as well; while I'm not an active streamer, I'd love to have others be able to stream through this. Might put more variety on streams with a high quality as there's not much of a high-end hardware needed.