Streaming into vMix
From CosmoViewerNG to vMix
RTSP over UDP
In CosmoViewerNG application settings, chapter "Restreaming", tab "MediaMTX" (turn on option "Enable MediaMTX server". Copy field "RTSP link".
In vMix input setting choose "Stream/SRT", Stream Type "RTSP over UDP", paste RTSP link into field "URL".