Found 1 record.
Status: Held for Document Update (1)
RFC2250, "RTP Payload Format for MPEG1/MPEG2 Video", January 1998Source of RFC: avt (rai)
Errata ID: 782
Status: Held for Document Update
Reported By: Vishal B S
Date Reported: 2005-09-26
Held for Document Update by: Robert Sparks
Section 3.3 says:
Payload Type: Distinct payload types should be assigned for video elementary streams and audio elementary streams. See  for payload type assignments. M bit: For video, set to 1 on packet containing MPEG frame end code, 0 otherwise. For audio, set to 1 on first packet of a "talk-spurt," 0 otherwise. PT: MPEG video or audio stream ID.
It should say:
Payload Type and PT mean the same in RTP header
So, there exists a repetition.