Wiring the Epiphan LiveScrypt to an ATEM and keying live captions over program. The Ethernet gotcha, the inputs, and the key I'd recommend.
https://www.youtube.com/embed/4aEyaRwiTqw
I own two of these and I'm not affiliated with Epiphan. Here's exactly how I wire one up.
Audio: 2x XLR, 2x quarter-inch, RCA, 3.5mm stereo. Video: 3G-SDI, 2x HDMI, 2x USB.
ATEM program output via SDI straight into the LiveScrypt. Transcription output goes out over HDMI into a Video Assist monitor, which doubles as an HDMI-to-SDI converter, then back into the ATEM.
The device generates a QR code. Attendees scan it and the live transcript opens in a phone browser, with customizable font size and layout. And stop the transcription when you're done or you keep paying, then download the full transcript as a text or SRT file.