The Blackmagic ATEM Mini Pro is a 4-camera switcher. In addition it allows you to live-stream to online platforms such as YouTube, Skype or Zoom. Simply connect up to four cameras via the HDMI inputs. You can also connect a computer for PowerPoint slides or gaming consoles.
The ATEM Mini Pro includes picture-in-picture effects, which is ideal for commentary. It also has a USB interface that works like a webcam. This enables you to use any streaming software.