I have been wanting the same for a while - as a solo operator I want to be able to automate scene switching for 2/4 person interviews - while doing the interview. in my case, I want to run all 8 channels from my mixer to switch around. one thing is for certain, if you want to run hosts and all audio sources to switch accordingly, you have to understand that you will have to get an audio card with at least 8 inputs, like an audioscience card or something more broadcast style.
if you do a search for "Audio Controlled Switcher " on youtube you can see it in action. say you have host 1 on camera 1, host 2 on camera 2, they have to have individual inputs for the software to recognize the trigger, so when host 1 speaks, it fires off the trigger switching to his camera, same thing happens when 2 speaks, i believe if there is a specific time delay in which they are both speaking, then it triggers another scene where both cameras become active, and same thing happens if there are additional people or audio inputs, of course, the image array is up to you on how the layout looks on the screen by presetting the scene. The way they have it set up is by basically giving a trigger to the audio input to activate the camera, they have 3 options DB6, DB12, DB18, if the audio input associated to that camera passes the "db" threshold, then the software switched the camera on for that input. I have been looking to do the same thing for the longest time! Vmix has an Audio Controlled Switcher plugin, and alot of visual radio stations are now coming with their own mix of hardware/software combinations be it via analog audio to GPIO input to USB, but nothing like the vmix plugin, which works with the audio cards already in the system.
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