I'm using vMix to feed Microsoft teams for a presentation. While the feed seems to work great with both the video and my microphone, for some reason I can't get the sound from a video clip to play. The master audio shows both microphone and video clip are feeding through just fine. But for some reason, while I can be heard just fine the video clip can't be heard. It doesn't make sense if the master is showing the audio is present. Incidentally, I haven't hard this problem in Zoom.

I couldn't find that setting in Teams. Interestingly, I'm having the same problem in Zoom. Seems more likely that it's a problem with what I'm feeding. I could understand it being muted for me, but not for the others in the meeting.

Turns out it was a vMix issue. I simply had to go into the settings for audio input and create an A and B output assigning A to microphone and B to the computer output. Once I did that, I could hear the audio from the video clip just fine.