The Layer Refresh Request (LRR) RTCP Feedback Message
J. Lennox, Daesik Hong, Justin Uberti, Stefan Holmer, M. Flodman · 2025
This memo describes the RTCP Payload-Specific Feedback Message Layer Refresh Request (LRR), which can be used to request a state refresh of one or more substreams of a layered media stream. It also defines its use with several RTP payloads for scalable media formats.