I currently have a broadcast that consists of Caspar playing out of a Decklink Mini Monitor card. I also use a Windows app I wrote to control Caspar, and uses Bass.dll to play back audio to go along with onscreen cues with millisecond precision, since Caspar doesn’t give me the audio versatility I need. The audio plays through the Decklink HDMI audio output to play alongside the Caspar audio/video output. This is captured through an HDMI capture card and streamed out through OBS. It works great.
The plan is to propagate this broadcast to 4 instances. I’m looking to find a way to do this without buying hardware for 4xHDMI out and 4xHDMI in to cover my audio requirements. Any suggestions?