Vast Waterfall


Ad tag waterfall helps you maximize ad revenue by attempting to show a valid ad to your viewers during an ad break.


It may happen that the Vast XML is not a valid response. It also happens pretty often that the Vast XML is empty or the Vast tag URL is temporarily not accessible. In such a scenario, it is possible to define an ad tag fallback URL, so the player will play the ad if only the response is valid.

Below, you can test three variations of a bad XML request. For each request, valid fallback VAST XML is used, so the ad is playing anyway. You can see the bad request reason in the browser's console.
404 Tag URL Empty VAST Invalid XML
Code snippet
player.vast ({
tagURL: "ad-tag-url.xml",
fallbackURL: "ad-tag-fallback-url.xml"
The VAST PRO plugin is a separate product, working with th video.js player and Nuevo plugin.
A lifetime license can be ordered upon the first Nuevo software order, or at any time later in the client area.