RTSP/RTP/RTCP/SDP 相关 RFC

RFC 3550(RTP):A Transport Protocol for Real-Time Applications(PDF)

RFC 2326(RTSP):Real Time Streaming Protocol(PDF)

RFC 3551(RTCP):RTP Profile for Audio and Video Conferences with Minimal Control(PDF),里面包含RTP SDP payload format/type(媒体载荷格式,PT)的定义

               PT   encoding    media type  clock rate   channels
                    name                    (Hz)
               ___________________________________________________
               0    PCMU        A            8,000       1
               1    reserved    A
               2    reserved    A
               3    GSM         A            8,000       1
               4    G723        A            8,000       1
               5    DVI4        A            8,000       1
               6    DVI4        A           16,000       1
               7    LPC         A            8,000       1
               8    PCMA        A            8,000       1
               9    G722        A            8,000       1
               10   L16         A           44,100       2
               11   L16         A           44,100       1
               12   QCELP       A            8,000       1
               13   CN          A            8,000       1
               14   MPA         A           90,000       (see text)
               15   G728        A            8,000       1
               16   DVI4        A           11,025       1
               17   DVI4        A           22,050       1
               18   G729        A            8,000       1
               19   reserved    A
               20   unassigned  A
               21   unassigned  A
               22   unassigned  A
               23   unassigned  A
               dyn  G726-40     A            8,000       1
               dyn  G726-32     A            8,000       1
               dyn  G726-24     A            8,000       1
               dyn  G726-16     A            8,000       1
               dyn  G729D       A            8,000       1
               dyn  G729E       A            8,000       1
               dyn  GSM-EFR     A            8,000       1
               dyn  L8          A            var.        var.
               dyn  RED         A                        (see text)
               dyn  VDVI        A            var.        1


               PT      encoding    media type  clock rate
                       name                    (Hz)
               _____________________________________________
               24      unassigned  V
               25      CelB        V           90,000
               26      JPEG        V           90,000
               27      unassigned  V
               28      nv          V           90,000
               29      unassigned  V
               30      unassigned  V
               31      H261        V           90,000
               32      MPV         V           90,000
               33      MP2T        AV          90,000
               34      H263        V           90,000
               35-71   unassigned  ?
               72-76   reserved    N/A         N/A
               77-95   unassigned  ?
               96-127  dynamic     ?
               dyn     H263-1998   V           90,000

RFC 2327(SDP):Session Description Protocol(PDF)



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