If you are a linux user and own a nice camera you can use gphoto2 and ffmpeg to create a virtual camera. I posted howto on HN couple of days ago[0][1], here it is for anyone who might need it. I tried it with both Sony RX100VA and Sony A7III, in both cases it works really well.
edit: forgot to mention that this works over USB, you don't have to pay crazy markup for capture card
edit2: (because I'm so excited about getting this to work) here is a list of supported cameras[2] - sadly I was not able to get GoPro Hero 6 to work.
edit: forgot to mention that this works over USB, you don't have to pay crazy markup for capture card
edit2: (because I'm so excited about getting this to work) here is a list of supported cameras[2] - sadly I was not able to get GoPro Hero 6 to work.
[0] https://www.crackedthecode.co/how-to-use-your-dslr-as-a-webc...
[1] https://news.ycombinator.com/item?id=23325143
[2] http://www.gphoto.org/proj/libgphoto2/support.php