mp4getduration.3

来自「网络MPEG4IP流媒体开发源代码」· 3 代码 · 共 30 行

.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library"
.SH "NAME"
.LP 
\fBMP4GetDuration\fR \- Get the duration of the movie (file)
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
MP4Duration \fBMP4GetDuration\fR(
.br 
	MP4FileHandle \fIhFile\fP
.br 
)
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.SH "RETURN VALUES"
.LP 
The duration of the movie (file) in movie (file) time scale units. 
.SH "DESCRIPTION"
.LP 
\fBMP4GetDuration\fR returns the maximum duration of all the tracks in the specified mp4 file. 
.LP 
Caveat: the duration is the movie (file) time scale units.
.SH "SEE ALSO"
.LP 
MP4(3) MP4GetTimeScale(3) MP4ConvertFromMovieDuration(3)