Example of using Google IMA SDK for HTML5

html5_ima_sdk_example.js

// video DOM inside creative
//<div id="videoContainer">
//  <video id="videoContainer"></video>
//</div>

// load IMA SDK at init load time
$.getScript('//imasdk.googleapis.com/js/sdkloader/ima3.js');

// usage: startVideo( /* vast tag url */ );

// set width and height according to video size in creative
var VIDEO_WIDTH = 600;
var VIDEO_HEIGHT = 380;

var adsManager;
var adsLoader;
var adDisplayContainer;
var intervalTimer;
var videoContent = document.getElementById('videoContainer');

function startVideo(vast_tag) {
  requestAds(vast_tag);
}

function createAdDisplayContainer() {
  // We assume the adContainer is the DOM id of the element that will house
  // the ads.
  adDisplayContainer =
      new google.ima.AdDisplayContainer(
          document.getElementById('adContainer'), videoContent);
}

function requestAds(vast_tag) {
  // Create the ad display container.
  createAdDisplayContainer();
  // Initialize the container. Must be done via a user action on mobile devices.
  adDisplayContainer.initialize();
  videoContent.load();
  // Create ads loader.
  adsLoader = new google.ima.AdsLoader(adDisplayContainer);

  // Set VPAID Mode to Enabled
  adsLoader.getSettings().setVpaidMode(google.ima.ImaSdkSettings.VpaidMode.ENABLED);
  adsLoader.getSettings().setVpaidMode(google.ima.ImaSdkSettings.VpaidMode.INSECURE);
  
  // Listen and respond to ads loaded and error events.
  adsLoader.addEventListener(
      google.ima.AdsManagerLoadedEvent.Type.ADS_MANAGER_LOADED,
      onAdsManagerLoaded,
      false);
  adsLoader.addEventListener(
      google.ima.AdErrorEvent.Type.AD_ERROR,
      onAdError,
      false);

  // Request video ads.
  var adsRequest = new google.ima.AdsRequest();

  // autoplay ad
  adsRequest.setAdWillAutoPlay(true);

  adsRequest.adTagUrl = vast_tag;

  // Specify the linear and nonlinear slot sizes. This helps the SDK to
  // select the correct creative if multiple are returned.
  adsRequest.linearAdSlotWidth = VIDEO_WIDTH;
  adsRequest.linearAdSlotHeight = VIDEO_HEIGHT;

  adsRequest.nonLinearAdSlotWidth = VIDEO_WIDTH;
  adsRequest.nonLinearAdSlotHeight = VIDEO_HEIGHT;

  adsLoader.requestAds(adsRequest);
}

function onAdsManagerLoaded(adsManagerLoadedEvent) {
  // Get the ads manager.
  var adsRenderingSettings = new google.ima.AdsRenderingSettings();
  adsRenderingSettings.restoreCustomPlaybackStateOnAdBreakComplete = true;
  adsRenderingSettings.bitrate = 1000;
  
  // videoContent should be set to the content video element.
  adsManager = adsManagerLoadedEvent.getAdsManager(
      videoContent, adsRenderingSettings);

  // Add listeners to the required events.
  adsManager.addEventListener(
      google.ima.AdErrorEvent.Type.AD_ERROR,
      onAdError);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.CONTENT_PAUSE_REQUESTED,
      onContentPauseRequested);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.CONTENT_RESUME_REQUESTED,
      onContentResumeRequested);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.ALL_ADS_COMPLETED,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.CLICK,
      onAdEvent);
  
  // Listen to any additional events, if necessary.
  adsManager.addEventListener(
      google.ima.AdEvent.Type.LOADED,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.STARTED,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.COMPLETE,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.FIRST_QUARTILE,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.MIDPOINT,
      onAdEvent);
  adsManager.addEventListener(
      google.ima.AdEvent.Type.THIRD_QUARTILE,
      onAdEvent);

  try {
    // Initialize the ads manager. Ad rules playlist will start at this time.
    adsManager.init(VIDEO_WIDTH, VIDEO_HEIGHT, google.ima.ViewMode.NORMAL);
    // Call play to start showing the ad. Single video and overlay ads will
    // start at this time; the call will be ignored for ad rules.
    adsManager.start();
  } catch (adError) {
    // An error may be thrown if there was a problem with the VAST response.
    videoContent.play();
  }
}

function onAdEvent(adEvent) {
  // Retrieve the ad from the event. Some events (e.g. ALL_ADS_COMPLETED)
  // don't have ad object associated.
  var ad = adEvent.getAd();
  switch (adEvent.type) {
    case google.ima.AdEvent.Type.LOADED:
      // console.log('loaded');
      // This is the first event sent for an ad - it is possible to
      // determine whether the ad is a video ad or an overlay.
      if (!ad.isLinear()) {
        // Position AdDisplayContainer correctly for overlay.
        // Use ad.width and ad.height.
        videoContent.play();
      }
      break;
    case google.ima.AdEvent.Type.STARTED:
      // only hide the content element (video overlay) when ad starts.
      $('#contentElement').hide();
      
      TXM.api.track('multimedia', 'video_started', 'vast_video');

      // This event indicates the ad has started - the video player
      // can adjust the UI, for example display a pause button and
      // remaining time.
      if (ad.isLinear()) {
        // For a linear ad, a timer can be started to poll for
        // the remaining time.
        intervalTimer = setInterval(
            function() {
              var remainingTime = adsManager.getRemainingTime();
            },
            300); // every 300ms
      }
      break;
    case google.ima.AdEvent.Type.COMPLETE:
      TXM.api.track('multimedia', 'video_completed', 'vast_video');

      if (ad.isLinear()) {
        clearInterval(intervalTimer);
      }
      break;

    case google.ima.AdEvent.Type.ALL_ADS_COMPLETED:
      break;
    case google.ima.AdEvent.Type.CLICK:
        (function() {
          var prop;
          var currentAd = adEvent.getAd();
          var clickThroughUrl;
          // Clickthrough parameter is obfuscated in IMA3. We loopthrough the properties of the
          // ad and search for a "clickThroughUrl" attribute. We track it if we find one.
          for(prop in ad) {
              clickThroughUrl = ad[prop].clickThroughUrl;
              if (clickThroughUrl !== undefined && clickThroughUrl !== null) {
                  break;
              }
          }
          if (clickThroughUrl) {
              TXM.api.track('navigation', 'external_page', 'vast_clickthrough');
          }
        }());
        break;

    // video quartile tracking
    case google.ima.AdEvent.Type.FIRST_QUARTILE:
        TXM.api.track('multimedia', 'video_first_quartile', 'vast_video');
        break;
    case google.ima.AdEvent.Type.MIDPOINT:
        TXM.api.track('multimedia', 'video_second_quartile', 'vast_video');
        break;
    case google.ima.AdEvent.Type.THIRD_QUARTILE:
        TXM.api.track('multimedia', 'video_third_quartile', 'vast_video');
        break;
  }
}

function onAdError(adErrorEvent) {
  adsManager.destroy();
}

function onContentPauseRequested() {
  videoContent.pause();
}

Hi! I am trying to get a VAST tag to autoplay on page load.
I have this for my video content:
<video id="content" class=${styles.content} playsInLine autoPlay >

and I have set:
adsRequest.setAdWillAutoPlay(true);

but the ad is not autoplaying... I have tried removing and keeping playsinline, I have tried camel case and all lowercase for both playsinline and autoplay, I have tried to add muted, but nothing seems to work.

Any ideas on what it could be?
(this is a react app by the way, if that makes a difference)