What budget cameras would you recommend for broadcasting concerts?

Question

Video broadcast

Greetings!
We are developing a non-commercial Internet radio, within its framework we are making video broadcasts of radio shows with live concerts (for the time being in Contact, we plan to also on YouTube). We use three Logitech 920 cameras connected via USB (cables with repeaters) to a Macbook, software - OBS. I categorically do not like the quality of the picture (example https://vk.com/video-29462313_456239161 )
We take the sound from the stereo pair from the remote control, so the sound characteristics of the cameras are not important. What budget cameras can be used to improve? I thought in the direction of Xiaomi Yi 4K, but they write that they do not work in the "video capture device" mode. What else can you think of?

Answer 1

Take a video capture card with HDMI + bring cameras, cameras from home, now people have a lot of equipment in their hands. Since the project is non-commercial - that's the only way.