This is my main tool for live streaming. I use Web Presenter with Treranex Mini panel to use as a 2 way switcher.  It has a one HDMI and One SDI input. I use one Sony a6300 and one Sony a6000 for my live streaming work witch only have HDMI outs. So I'm Using Blackmagic video Assist Monitor + Recorder as a HDMI to SDI converter.  

This is Blackmagic Design Web presenter with Teranex Mini Smart Panel. You need to buy this separably to use the Web  Presenter as a 2 way switcher and this smart panel comes with color display to monitor your video output.

I use this Monitor as my main camera monitor and a HDMI to SDI converter for live broadcast.