datapipe time to millisecond may be not correct?

[youngstu]

11:02:15:18, 11-hour, 02-minute, 15-second, 18-millisecond
correct way: 11:02:15:18=11x24x3600x1000 + 2x3600x1000 + 15x1000 + 18?

            # Compute Timings (This is assuming that audio timing is given in 30fps)
        audio_start_time_in_thirds = (
                audio_start_time[0] * 216000
                + audio_start_time[1] * 3600
                + audio_start_time[2] * 60
                + audio_start_time[3] * 2
        )

        anim_start_time_in_thirds = (
                anim_start_time[0] * 216000
                + anim_start_time[1] * 3600
                + anim_start_time[2] * 60
                + anim_start_time[3] * 1
        )

        acting_start_time_in_thirds = (
                acting_start_time[0] * 216000
                + acting_start_time[1] * 3600
                + acting_start_time[2] * 60
                + acting_start_time[3] * 1
        )

        acting_end_time_in_thirds = (
                acting_end_time[0] * 216000
                + acting_end_time[1] * 3600
                + acting_end_time[2] * 60
                + acting_end_time[3] * 1
        )