Add video length to initialized statement

Was asked by Jon to add video length to the extensions sent by the intialized verb.

scripts/html5.js

@@ -162,7 +162,7 @@ H5P.VideoHtml5 = (function ($) {
         }
       }
 
-      return videoXAPI.getArgsXAPIInitialized(video.videoWidth, video.videoHeight, video.playbackRate, video.volume, ccEnabled, ccLanguage);
+      return videoXAPI.getArgsXAPIInitialized(video.videoWidth, video.videoHeight, video.playbackRate, video.volume, ccEnabled, ccLanguage, video.videoHeight, video.duration);
 
     };
 

scripts/x-api.js

@@ -76,7 +76,7 @@ H5P.VideoXAPI = (function ($) {
      * @returns {Object} JSON xAPI statement
      *
      */
-    self.getArgsXAPIInitialized = function (width, height, rate, volume, ccEnabled, ccLanguage, quality) {
+    self.getArgsXAPIInitialized = function (width, height, rate, volume, ccEnabled, ccLanguage, quality, videoLength) {
       // If quality isn't provided, set it to the height of the video.
       quality = typeof quality !== 'undefined' ? quality : height;
 
@@ -90,6 +90,7 @@ H5P.VideoXAPI = (function ($) {
       volume = formatFloat(volume);
 
       var extensions = {};
+       extensions['https://w3id.org/xapi/video/extensions/length'] = videoLength;
       if (typeof isFullscreen !== 'undefined') {
         extensions['https://w3id.org/xapi/video/extensions/full-screen'] = isFullscreen;
       }

scripts/youtube.js

@@ -240,7 +240,7 @@ H5P.VideoYouTube = (function ($) {
         ccLanguage = player.getOptions('cc', 'track').languageCode;
       }
 
-      return videoXAPI.getArgsXAPIInitialized(width, height, self.getPlaybackRate(), self.getVolume(), ccEnabled, ccLanguage, self.getQuality());
+      return videoXAPI.getArgsXAPIInitialized(width, height, self.getPlaybackRate(), self.getVolume(), ccEnabled, ccLanguage, self.getQuality(), self.duration);
 
     };