mp4gettracktimescale.3

网络MPEG4IP流媒体开发源代码

.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library"
.SH "NAME"
.LP 
\fBMP4GetTrackTimeScale\fR \- Get the time scale of a track
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
u_int32_t \fBMP4GetTrackTimeScale\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 time scale is desired.
.SH "RETURN VALUES"
.LP 
The time scale (ticks per second) of the track in the mp4 file.
.SH "DESCRIPTION"
.LP 
\fBMP4GetTrackTimeScale\fR returns the time scale of the specified track in the mp4 file. The time scale determines the number of clock ticks per second for this track. 
.SH "SEE ALSO"
.LP 
MP4(3)