A media stream (1) comprising rich media scene packets (10, 12) and scene update packets (20, 30, 40) is complemented with a data packet (20) defining an exit point for interrupting rendering rich media of the stream (1) and a scene update packet (30) associated with the data packet (20) and defining an entry point back to rendering rich media of the stream (1). The exit-entry point pair defines an alternative media rendering route (5) that can be used by user terminals (100) to recover from errors (45) in the media stream (1).