h265-test.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0">
  <meta name="renderer" content="webkit">
  <title>h265 测试</title>
  <meta name="description" content="首页描述"/>
  <meta name="keywords" content="首页关键词"/>
  <meta name="author" content="Web Layout:amu"/>
  <meta name="format-detection" content="telephone=no,date=no,address=no,email=no,url=no"/>
  <link rel="stylesheet" href="./src/style/base.css?v=1">
  
 </head>
<body class="paper">
  <div id="wrap">
  </div>
<script>
  console.log(MediaSource.isTypeSupported('video/mp4; codecs="hev1.1.6.L120.90"'))//safari true
  let videoEl = document.createElement('video')
    videoEl.src = './video-h265.mkv'
    console.log(videoEl,typeof videoEl.canPlayType == 'function')
  let supportHEVC = function(video) {
    if (typeof videoEl.canPlayType == 'function') {
        var playable = videoEl.canPlayType('video/mp4; codecs="hev1.1.6.L120.90"');//safari no 
        console.log(playable)
        if ((playable.toLowerCase() == 'maybe') || (playable.toLowerCase() == 'probably')) {
            return true;
        }
    }
    return false;
  };
  console.log(supportHEVC())
</script>
</body>
</html>