From my experience in trying to run two completely separate vMix instances and attempting to stream to separate places. (For instance, my business broadcasts strength sports and sometimes we have to simultaneously broadcast multiple platforms to their own destination. Basically, we treat each platform as its own individual broadcast.)

Doing separate channels works on the surface but because all vMix outputs use the same virtual frame server, ffmpeg will begin alternating frames between the two outputs causing both streams to flicker or fail (if the stream bitrate, framerate, etc are different).

What we need is the ability to have completely different vMix Video devices in windows or for each vMix instance to instantiate it's own discrete virtual device so that they don't interfere with one another allowing us to produce two streams on one computer (albeit, a very powerful one).

Thoughts?