This document specifies a few extensions to the messages defined in the Audio-Visual Profile with Feedback (AVPF). They are helpful primarily in conversational multimedia scenarios where centralized multipoint functionalities are in use. However@ some are also usable in smaller multicast environments and point-to-point calls. The extensions discussed are messages related to the ITU-T Rec. H.271 Video Back Channel@ Full Intra Request@ Temporary Maximum Media Stream Bit Rate@ and Temporal-Spatial Trade-off.
RFC 5104-2008 history
2008RFC 5104-2008 Codec Control Messages in the RTP Audio-Visual Profile with Feedback (AVPF)