mp4gettrackbitrate.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 
\fBMP4GetTrackBitRate\fR \- Get the average bit rate in bits per second of the specified track
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
u_int32_t \fBMP4GetTrackBitRate\fR(
.br 
	MP4FileHandle \fIhFile\fP,
.br 
	MP4TrackId \fItrackId\fP
.br 
)
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.TP 
\fItrackId\fP
Specifies the track for which the bit rate is desired.
.SH "RETURN VALUES"
.LP 
Upon success, the average bit rate in bits per second of the track. Upon an error, 0.
.SH "DESCRIPTION"
.LP 
\fBMP4GetTrackBitRate\fR returns the average bit rate in bits per second in the specified track in the mp4 file.
.LP 
Note: hint tracks will not return their bit rate via this mechanism.
.SH "SEE ALSO"
.LP 
MP4(3)