RTCP_BYE          169 libavformat/rtpdec.c         case RTCP_BYE:
RTCP_BYE          170 libavformat/rtpdec.c             return -RTCP_BYE;
RTCP_BYE          296 libavformat/rtpenc.c         avio_w8(s1->pb, RTCP_BYE);
RTCP_BYE         2156 libavformat/rtsp.c             if (ret == -RTCP_BYE) {