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       MP4SetHintTrackRtpPayload  - Set the RTP payload parameters of the hint


       #include <mp4.h>

       bool MP4SetHintTrackRtpPayload(
            MP4FileHandle hFile,
            MP4TrackId hintTrackId,
            const char* pPayloadName,
            u_int8_t* pPayloadNumber,
            u_int16_t maxPayloadSize = 0
            bool include_rtp_map = true
            bool include_mpeg4_esid = true


       hFile  Specifies the mp4 file to which the operation applies.

              Specifies the hint track to which the operation applies.

              Specifies the RTP payload name.

              Specifies a pointer to the RTP payload number.

              Specifies the maximum RTP payload size in bytes.

              Specifies if the a=rtpmap statement is included.

              Specifies if the a=mpeg4-esid statement is included.


       Upon success, true (1). Upon an error, false (0).


       MP4SetHintTrackRtpPayload sets the RTP payload parameters for the  hint
       track.  The  RTP payload is the set of rules by which media samples are
       packed into RTP packets.

       The payload name identifies which RTP payload is being used for the RTP
       packets created from the hint track. This value is sent to the receiver
       in the SDP description. For example, MP3 audio sent  according  to  the
       rules in IETF RFC 2250 uses the name "MPA" for the RTP payload.

       The payload number is a shorter form of the payload name. This value is
       associated with the payload name in the SDP description and  then  sent
       in  every RTP packet. Payload numbers 1 thru 95 are statically assigned
       in IETF RFC 1890, numbers 96 thru 127 are dynamically assigned within a
       session.  If  the  RTP payload in use is one of the statically assigned
       ones, you should pass this value to the library. If you need a  dynamic
       payload  number assigned, pass the define value MP4_SET_DYNAMIC_PAYLOAD
       for this parameter and the  library  will  choose  an  valid  available
       number and return this value.

       The maxPayloadSize specifies the maximum number of bytes that should be
       placed in the RTP payload section of the RTP packets. It  is  desirable
       that  RTP packets not exceed the maximum transmission unit (MTU) of the
       IP network they  travel  over  since  otherwise  the  packets  must  be
       fragmented at the IP level which consumes router resources and can lead
       to less robust behavior in the face of packet loss.

       The default value for maxPayloadSize is 1460, which is the MTU  for  an
       Ethernet  or  similar  network minus the standard sizes of the IP, UDP,
       and RTP headers (1500 - 20 - 8 - 12 = 1460).

       If you anticipate streaming over IP networks with smaller MTU sizes, or
       that   extensions  to  the  network  headers  might  be  used,  a  more
       conservative value should be chosen. The minimum MTU for an IP  network
       is 576 bytes.


       MP4(3) MP4GetHintTrackPayload(3)