Abstract



This document defines two Session Descr iption Protocol (SDP)

attributes: "group" and "mid". They allow to group together several

"m" lines for two different purposes: for lip synchronization and for

receiving media from a single flow (several media streams) that are

encoded in different formats during a particular session, on

different ports and host interfaces.-

Abstract



　 This document defines two Session Descr iption Protocol (SDP)

　 attributes: "group" and "mid".　They allow to group together several

　 "m" lines for two different purposes: for lip synchronization and for

　 receiving media from a single flow (several media streams) that are

　 encoded in different formats during a particular session, on

　 different ports and host interfaces.