updateDuration ()  {
		const t = this;

		let duration = t.getDuration();

		if (t.media !== undefined && (isNaN(duration) || duration === Infinity || duration < 0)) {
			t.media.duration = t.options.duration = duration = 0;
		}

		if (t.options.duration > 0) {
			duration = t.options.duration;
		}

		const timecode = secondsToTimeCode(duration, t.options.alwaysShowHours, t.options.showTimecodeFrameCount, t.options.framesPerSecond, t.options.secondsDecimalLength, t.options.timeFormat);

		// Toggle long-video class if time code is >5 digits (MM:SS)
		if (timecode.length > 5) {
			addClass(t.getElement(t.container), `${t.options.classPrefix}long-video`);
		} else {
			removeClass(t.getElement(t.container), `${t.options.classPrefix}long-video`);
		}

		if (t.getElement(t.controls).querySelector(`.${t.options.classPrefix}duration`) && duration > 0) {
			t.getElement(t.controls).querySelector(`.${t.options.classPrefix}duration`).innerHTML = timecode;
		}
	}
Update the duration time and output it in format 00:00