var video = document.getElementsByTagName("video")[0]; 

function d(msg) { 
  var out = document.getElementById('video_debug');
  out.innerHTML = 'video fired event: <i>' + msg + '</i>';
}

video.addEventListener("load", function() { d('video loaded') }, true);
video.addEventListener("ended", function() { d('video ended') }, true);
video.addEventListener("play", function() { d('video playback started') }, true);
video.addEventListener("pause", function() { d('video playback paused') }, true);