mp4getrtppackettransmitoffset.3

完整的RTP RTSP代码库

.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library"
.SH "NAME"
.LP 
\fBMP4GetRtpPacketTransmitOffset\fR \- Get the transmit offset of an RTP packet
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
int32_t \fBMP4GetRtpPacketTransmitOffset\fR(
.br 
	MP4FileHandle \fIhFile\fP,
.br 
	MP4TrackId \fIhintTrackId\fP,
.br 
	u_int16_t \fIpacketIndex\fP
.br 
)
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.TP 
\fIhintTrackId\fP
Specifies the hint track to which the operation applies.
.TP 
\fIpacketIndex\fP
Specifies the packet to which the operation applies.
.SH "RETURN VALUES"
.LP 
The transmit offset for the specified packet in the hint track timescale.
.SH "DESCRIPTION"
.LP 
\fBMP4GetRtpPacketTransmitOffset\fR returns the transmit offset of an RTP packet. This offset may be set by some hinters to smooth out the packet transmission times and reduce network burstiness. A transmitter would need to apply this offset to the calculated transmission time based on the hint start time.

.SH "SEE ALSO"
.LP 
MP4(3) MP4AddRtpPacket(3) MP4ReadRtpPacket(3)