https://www.ietf.org/archive/id/draft-ietf-avtcore-rtcp-green-metadata-07.html
RTP Control Protocol (RTCP) Messages for Temporal-Spatial Resolution
This specification describes an RTCP feedback message format for the ISO/IEC International Standard 23001-11, known as Energy Efficient Media Consumption...
rtp control protocolrtcpmessagestemporalspatial
https://www.rfc-editor.org/rfc/rfc7022
RFC 7022: Guidelines for Choosing RTP Control Protocol (RTCP) Canonical Names (CNAMEs)
rtp control protocol