6. Processing RTP/RTCP

When bundling, associating incoming RTP/RTCP with the proper "m=" section is defined in [RFC8843], Section 9.2. When not bundling, the proper "m=" section is clear from the ICE component over which the RTP/RTCP is received.

Once the proper "m=" section or sections are known, RTP/RTCP is delivered to the RtpTransceiver(s) associated with the "m=" section(s) and further processing of the RTP/RTCP is done at the RtpTransceiver level. This includes using the RID mechanism [RFC8851] and its associated RtpStreamId and RepairedRtpStreamId identifiers to distinguish between multiple encoded streams and determine which Source RTP stream should be repaired by a given redundancy RTP stream.