NAME
MP4ConvertToTrackDuration - Convert a duration from a specified time
scale to the track time scale.
SYNTAX
#include <mp4.h>
MP4Duration MP4ConvertToTrackDuration(
MP4FileHandle hFile,
MP4TrackId trackId,
u_int64_t duration,
u_int32_t oldTimeScale
)
ARGUMENTS
hFile Specifies the mp4 file to which the operation applies.
trackId
Specifies the track from which the duration originates.
duration
Specifies the duration that is to be converted.
oldTimeScale
Specifies the time scale in ticks per second in which the
duration is currently expressed.
RETURN VALUES
Upon success, the duration in the track time scale units. Upon error,
MP4_INVALID_DURATION.
DESCRIPTION
MP4ConvertToTrackDuration converts a duration such as a sample duration
from the specified time scale to the track time scale.
SEE ALSO
MP4(3) MP4ConvertFromTrackDuration(3)