index.html

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">

    <!-- Video.js -->
    <link href="video-js.min.css" rel="stylesheet">
    <script src="video.min.js"></script>

    <title>Video Sample</title>

    <style type="text/css">
        #my-player{
            width: 800px;
            height: 450px;
        }
    </style>

</head>

<body>

    <video id="my-player" class="video-js" loop muted preload="auto">
        <source src="1080p.mp4" type="video/mp4"></source>
        <p class="vjs-no-js">
            To view this video please enable JavaScript, and consider upgrading to a web browser that <a href="http://videojs.com/html5-video-support/" target="_blank">supports HTML5 video</a>
        </p>
    </video>

    <script>
        // Initialize video tag ID
        var player = videojs('my-player');

        var options = {};

        // Create timestamp array
        var timestamp = [0,6,11];

        // When load video file
        var player = videojs('my-player', options, function onPlayerReady() {

            // alert('Your player is ready!');

            // Get a random start timestamp from the array
            var currentTime = timestamp[Math.floor(Math.random() * timestamp.length)];

            alert(currentTime + "秒からスタート");

            // Set the random start timestamp as a propaty on a Video.js player
            this.currentTime(currentTime);

            // Play
            this.play();

        });
    </script>

    <p><a href="https://github.com/videojs/video.js/" target="_blank">video.js</a></p>
</body>
</html>