@misc{rfc3388,
    series =    {Request for Comments},
    number =    3388,
    howpublished =  {RFC 3388},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3388},
    url =       {https://www.rfc-editor.org/info/rfc3388},
    author =    {Henning Schulzrinne and Gonzalo Camarillo and Goran AP Eriksson and Jan Holler},
    title =     {{Grouping of Media Lines in the Session Description Protocol (SDP)}},
    pagetotal = 11,
    year =      2002,
    month =     dec,
    abstract =  {This document defines two SDP attributes: 'groupe' 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), encoded in different formats during a particular session, in different ports and host interfaces.},
}