mp4setsamplerenderingoffset.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 
\fBMP4SetSampleRenderingOffset\fR \- Set the rendering offset of a track sample
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
bool \fBMP4SetSampleRenderingOffset\fR(
.br 
	MP4FileHandle \fIhFile\fP,
.br 
	MP4TrackId \fItrackId\fP,
.br 
	MP4SampleId \fIsampleId\fP,
.br 
	MP4Duration \fIrenderingOffset\fP
.br 
);
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.TP 
\fItrackId\fP
Specifies the track to which the operation applies.
.TP 
\fIsampleId\fP
Specifies the sample to which the operation applies. Caveat: the first sample has id 1 not 0.
.TP 
\fIrenderingOffset\fP
Species the new value for the sample rendering offset in track time scale units.

.SH "RETURN VALUES"
.LP 
Upon success, true (1). Upon an error, false (0).

.SH "DESCRIPTION"
.LP 
\fBMP4SetSampleRenderingOffset\fR sets the rendering offset of the specified sample from the specified track in the track time scale units. See MP4ConvertToTrackDuration() for how to map this value from another time scale.
.LP 
See MP4GetSampleRenderingOffset() for a description of this sample property.

.SH "SEE ALSO"
.LP 
MP4(3) MP4ConvertToTrackDuration(3) MP4GetSampleRenderingOffset(3)