I believe I’ve found a solution. I decided to use ffmpeg from the RPi4 command line to save an image from the RTSP stream every 5 minutes. Every 5 minutes the new image overwrites the previous one, thus using the same filename. Then, I’m using mykle1’s MMM-EyeCandy module to display that sole image that’s housed in the /pix folder for that module. So, after several hours, ffmpeg continues to run (although it throws lots of “missed packet” errors), but it doesn’t abort. I’ll put ffmpeg under pm2 control next. Now, using MMM-EyeCandy, I’m getting a new image from my Wyze camera in the lower-right corner of my MM2 every 5 minutes. This is all I needed to stay reasonably up-to-date with what’s happening in front of that camera.