RRID denotes the Repaired RTP Stream ID in RTP.It is defined and used as a header extension in

RID denotes the RTP Stream ID in RTP.It is defined and used as a header extension in RFC

MID denotes the media identification tag in RTP.It is defined and used as a header extension in RFC

RRTR stands for RTCP Receiver Reference Time Report. It is defined in section 4.4 of RFC 3611and can,