Upon testing, I don’t see that error. I don’t have two cameras, so the first stream is the test stream.

I’ve moved my mirror to a Pi4…

Here’s my config:

{ module: "MMM-RTSPStream", position: "top_center", config: { autoStart: true, rotateStreams: false, moduleWidth: 640, moduleHeight: 360, localPlayer: 'omxplayer', remotePlayer: 'ffmpeg', showSnapWhenPaused: false, remoteSnaps: false, omxRestart: 2, stream1: { name: 'big buck', url: 'https://www.radiantmediaplayer.com/media/bbb-360p.mp4', ffmpegPort: 10001, shutdownDelay: 0, }, stream2: { name: 'Front Camera', url: 'rtsp://username:password@FrontCam/h264Preview_01_sub', protocal: "ucp", width: 640, height: 360, ffmpegPort: 10002, shutdownDelay: 0, }, } },