RTP_QT_HANDLER    253 libavformat/rtpdec_qt.c RTP_QT_HANDLER(qt,        vid, "X-QT",        AVMEDIA_TYPE_VIDEO);
RTP_QT_HANDLER    254 libavformat/rtpdec_qt.c RTP_QT_HANDLER(qt,        aud, "X-QT",        AVMEDIA_TYPE_AUDIO);
RTP_QT_HANDLER    255 libavformat/rtpdec_qt.c RTP_QT_HANDLER(quicktime, vid, "X-QUICKTIME", AVMEDIA_TYPE_VIDEO);
RTP_QT_HANDLER    256 libavformat/rtpdec_qt.c RTP_QT_HANDLER(quicktime, aud, "X-QUICKTIME", AVMEDIA_TYPE_AUDIO);