In the midst of a streaming session today video from one of our cameras all of a sudden froze. At the same time time the audio signal began to be unstable and after a few minutes stopped. This was only within vMix as the video continued as normal in camera controller software monitoring screen and the video from our other two cameras continued as normal in vMix as well. I checked and rechecked all the audio connections and about 5 minutes into the problem it began to clear up and a minute or so later both the audio and video stabilized. Anyone have any ideas what caused this and what can be done to prevent it?