User blog comment:Brandon Rhea/Intro to Wiki Modernization/@comment-27755354-20170306215031/@comment-27345308-20170306221817

"There's factually no possible way video advertisement can improve overall performance compared to static advertisement."

From what I've seen, their video advertisement system consists of a JavaScript script (that gets loaded along with other core JavaScript and has little to no effect on page load time) that sends a single HTTP request to the controller that returns an image and a video URL. Then that script injects the video inside the article and wraps it around so it looks like a video, and the video isn't loaded until you click the play button.

Let's say this system replaces two "normal" ads in ad revenue, those that load two iframes with a bunch of external HTML and JavaScript and likely loads of images as well. You'd rather let your browser handle two of these "normal" ads that load all that stuff instead of letting it load a single image?

You might need to recheck your "facts".