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".
rtsp://127.0.0.1:8554/stream
In vMix input setting choose "Stream/SRT", Stream Type "RTSP over UDP", paste RTSP link into field "URL".