playVideoOnLoad(element, callbackFn) {
			this.videoEndedListener = () => this.stopStreams();
			this.videoCanPlayListener = () => this.tryPlayVideo(element);
			element.addEventListener('ended', this.videoEndedListener);
			element.addEventListener('canplay', this.videoCanPlayListener);
			element.addEventListener('playing', callbackFn);
			// if canplay was already fired, we won't know when to play, so just give it a try
			this.tryPlayVideo(element);
		}
Binds listeners and callbacks to the videoElement.

@param element
@param callbackFn