HTML5 Video Tracking for Google Tag Manager

ga-video.js

<script>
// Let's wrap everything inside a function so variables are not defined as globals  
(function(){  
    // This is gonna our percent buckets ( 10%-90% )  
    var divisor = 10;  
    // We're going to save our players status on this object.  
    var videos_status = {};  
    // This is the funcion that is gonna handle the event sent by the player listeners  
    function eventHandler(e){   
      switch(e.type) {  
          // This event type is sent everytime the player updated it's current time,  
          // We're using for the % of the video played.     
        case 'timeupdate':      
          // Let's set the save the current player's video time in our status object              
          videos_status[e.target.id].current = Math.round(e.target.currentTime);     
          // We just want to send the percent events once     
          var pct = Math.floor(100 * videos_status[e.target.id].current / e.target.duration);               
          for (var j in videos_status[e.target.id]._progress_markers) {
            if (pct >= j && j > videos_status[e.target.id].greatest_marker) {
    			videos_status[e.target.id].greatest_marker = j;
            }
          }
         // current bucket hasn't been already sent to GA?, let's push it to GTM
         if (videos_status[e.target.id].greatest_marker && !videos_status[e.target.id]._progress_markers[videos_status[e.target.id].greatest_marker]) {
             videos_status[e.target.id]._progress_markers[videos_status[e.target.id].greatest_marker] = true;
             dataLayer.push({
                 'event': 'gaEvent',
                 'gaEventCategory': 'HTML5 Video',
                 'gaEventAction': 'Progress %' + videos_status[e.target.id].greatest_marker,
                 // We are using sanitizing the current video src string, and getting just the video name part
                 'gaEventLabel': decodeURIComponent(e.target.currentSrc.split('/')[e.target.currentSrc.split('/').length - 1])
             });
        }

    break;
    // This event is fired when user's click on the play button
    case 'play':
        dataLayer.push({
            'event': 'gaEvent',
            'gaEventCategory': 'HTML5 Video',
            'gaEventAction': 'Play',
            'gaEventLabel': decodeURIComponent(e.target.currentSrc.split('/')[e.target.currentSrc.split('/').length - 1])
        });

        break;
        // This event is fied when user's click on the pause button
    case 'pause':
        dataLayer.push({
            'event': 'gaEvent',
            'gaEventCategory': 'HTML5 Video',
            'gaEventAction': 'Pause',
            'gaEventLabel': decodeURIComponent(e.target.currentSrc.split('/')[e.target.currentSrc.split('/').length - 1]),
            'gaEventValue': videos_status[e.target.id].current
        });
        break;
        // If the user ends playing the video, an Finish video will be pushed ( This equals to % played = 100 )  
    case 'ended':
        dataLayer.push({
            'event': 'gaEvent',
            'gaEventCategory': 'HTML5 Video',
            'gaEventAction': 'Finished',
            'gaEventLabel': decodeURIComponent(e.target.currentSrc.split('/')[e.target.currentSrc.split('/').length - 1])
        });
        break;
    default:
        break;
        }

     }
        // We need to configure the listeners
        // Let's grab all the the "video" objects on the current page     
        var videos = document.getElementsByTagName('video');
        for (var i = 0; i < videos.length; i++) {
            // In order to have some id to reference in our status object, we are adding an id to the video objects
            // that don't have an id attribute. 
            var videoTagId;
            if (!videos[i].getAttribute('id')) {
                // Generate a random alphanumeric string to use is as the id
                videoTagId = 'html5_video_' + Math.random().toString(36).slice(2);
                videos[i].setAttribute('id', videoTagId);
            }
            // Current video has alredy a id attribute, then let's use it :)
            else {
                videoTagId = videos[i].getAttribute('id');
            }

            // Video Status Object declaration  
            videos_status[videoTagId] = {};
            // We'll save the highest percent mark played by the user in the current video.
            videos_status[videoTagId].greatest_marker = 0;
            // Let's set the progress markers, so we can know afterwards which ones have been already sent.
            videos_status[videoTagId]._progress_markers = {};

            for (j = 0; j < 100; j++) {
                videos_status[videoTagId].progress_point = divisor * Math.floor(j / divisor);
                videos_status[videoTagId]._progress_markers[videos_status[videoTagId].progress_point] = false;
            } 
            // On page DOM, all players currentTime is 0     
            videos_status[videoTagId].current = 0;      
            // Now we're setting the event listeners.     
            videos[i].addEventListener("play", eventHandler, false);     
            videos[i].addEventListener("pause", eventHandler, false);     
            videos[i].addEventListener("ended", eventHandler, false);     
            videos[i].addEventListener("timeupdate", eventHandler, false);     
            videos[i].addEventListener("ended", eventHandler, false);
         } 
})();
</script>

Thanks for sharing the code.
I have one question. If I set the divisor to 5, the percentage of data is transmitted in the order of 5,50,55,60,65....
Why can't the data transmission rate from 10 to 45?

If you know, please reply!
I hope you knew the solution to the problem