MP4ConvertToTrackTimestamp - Convert a timestamp from a specified time
scale to the track time scale.
hFile Specifies the mp4 file to which the operation applies.
Specifies the track from which the duration originates.
Specifies the timestamp that is to be converted.
Specifies the time scale in ticks per second in which the
timestamp is currently expressed.
Upon success, the timestamp in the track time scale units. Upon error,
MP4ConvertToTrackTimestamp converts a timestamp such as a sample start
time from the specified time scale to the track time scale.