NAME
MP4GetSampleTime - Get the start time of a track sample
SYNTAX
#include <mp4.h>
MP4Timestamp MP4GetSampleTime(
MP4FileHandle hFile,
MP4TrackId trackId,
MP4SampleId sampleId
);
ARGUMENTS
hFile Specifies the mp4 file to which the operation applies.
trackId
Specifies the track to which the operation applies.
sampleId
Specifies the sample to which the operation applies. Caveat: the
first sample has id 1 not 0.
RETURN VALUES
Upon success, the sample start time in track time scale units. Upon an
error, MP4_INVALID_TIMESTAMP.
DESCRIPTION
MP4GetSampleTime returns the start time of the specified sample from
the specified track in the track time scale units. See
MP4ConvertFromTrackTimestamp() for how to map this value to another
time scale.
SEE ALSO
MP4(3) MP4ConvertFromTrackDuration(3)