<!DOCTYPE html>
<title>Reference for WebVTT rendering, when media cannot be played (404 error), subtitles are not displayed</title>
<style>
html { overflow:hidden }
body { margin:0 }
.video {
    display: inline-block;
    width: 1280px;
    height: 720px;
    position: relative
}
</style>
<div class="video"></div>