RTSP_STATUS_SERVICE  119 libavformat/rtspcodes.h [RTSP_STATUS_SERVICE]                ="Service Unavailable",
RTSP_STATUS_SERVICE   51 libavformat/rtspdec.c     { RTSP_STATUS_SERVICE,        "Service Unavailable"              },
RTSP_STATUS_SERVICE  185 libavformat/rtspdec.c         rtsp_send_reply(s, RTSP_STATUS_SERVICE, NULL, request.seq);