FFMPEG RTSP -> MPEG-DASH Stops on Long Streams
Recently I've had the chance to research a bit in this area, and I've come across some rumors that ffmpeg's support for RTSP is somewhat buggy, i.e. it stops suddenly or yields mangled frames.
If you need only video, you can use openrtsp app from Live555 it can output stream to stdout to be consumed with -i -" in ffmpeg (Live555's client seems to be state of the art wiht RTSP)