Question

<iframe class="youtube-player" type="text/html" src="http://www.youtube.com/embed/JW5meKfy3fY?wmode=opaque&autohide=1&autoplay=1&volume=0&vol=0&mute=1" frameborder="0">&lt;br /&gt;</iframe>

视频没有静音！我希望首次播放时音量为0 ......

Answer 1

Youtube不提供通过url参数静音（请参阅http://code.google.com/apis/youtube/player_parameters.html）。

你必须使用javascript。有关详细信息，请参阅http://code.google.com/apis/youtube/js_api_reference.html。

但是，请注意上面链接的页面上的警告： “YouTube JavaScript Player API的弃用已于2015年1月27日公布.YouTube Flash嵌入也已弃用。请参阅弃用政策以获取更多信息。请将您的应用程序迁移到IFrame API，它可以智能地使用任何嵌入式播放器 - HTML（）或Flash（） - 客户端支持。“

HTML

<iframe class="youtube-player" id="player" type="text/html" src="http://www.youtube.com/embed/JW5meKfy3fY?wmode=opaque&autohide=1&autoplay=1&enablejsapi=1" frameborder="0">&lt;br /&gt;</iframe>

请注意网址中的enablejsapi = 1。

的Javascript

var player =  iframe.getElementById('player');
player.mute();

<强>更新

以前的代码存在一些问题，并且无法使用当前的API（playerVars语法错误）。这是更新的代码。您可能需要修改所需的参数。

         
    <div id="player"></div>
    <script>
      // 1. This code loads the IFrame Player API code asynchronously.
      var tag = document.createElement('script');

      tag.src = "https://www.youtube.com/iframe_api";
      var firstScriptTag = document.getElementsByTagName('script')[0];
      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

      // 2. This function creates an <iframe> (and YouTube player)
      //    after the API code downloads.
      var player;
      function onYouTubeIframeAPIReady() {
        player = new YT.Player('player', {
          height: '100%',
          width: '100%',
          playerVars: {
                    autoplay: 1,
                    loop: 1,
                    controls: 0,
                    showinfo: 0,
                    autohide: 1,
                    modestbranding: 1,
                    vq: 'hd1080'},
          videoId: '1pzWROvY7gY',
          events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
          }
        });
      }

      // 3. The API will call this function when the video player is ready.
      function onPlayerReady(event) {
        event.target.playVideo();
        player.mute();
      }

      var done = false;
      function onPlayerStateChange(event) {
        
      }
      function stopVideo() {
        player.stopVideo();
      }
    </script>

Answer 2

player_api将于2015年6月25日弃用。播放youtube视频有一个新的api IFRAME_API

看起来像以下代码：

<!-- 1. The <iframe> (and video player) will replace this <div> tag. -->
<div id="player"></div>

<script>
  // 2. This code loads the IFrame Player API code asynchronously.
  var tag = document.createElement('script');

  tag.src = "https://www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  // 3. This function creates an <iframe> (and YouTube player)
  //    after the API code downloads.
  var player;
  function onYouTubeIframeAPIReady() {
    player = new YT.Player('player', {
      height: '390',
      width: '640',
      videoId: 'M7lc1UVf-VE',
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }

  // 4. The API will call this function when the video player is ready.
  function onPlayerReady(event) {
    event.target.playVideo();
  }

  // 5. The API calls this function when the player's state changes.
  //    The function indicates that when playing a video (state=1),
  //    the player should play for six seconds and then stop.
  var done = false;
  function onPlayerStateChange(event) {
    if (event.data == YT.PlayerState.PLAYING && !done) {
      setTimeout(stopVideo, 6000);
      done = true;
    }
  }
  function stopVideo() {
    player.stopVideo();
  }
</script>

Answer 3

试试这个工作正常

＆＃13;

<html><body style='margin:0px;padding:0px;'>
        <script type='text/javascript' src='http://www.youtube.com/iframe_api'></script><script type='text/javascript'>
                var player;
        function onYouTubeIframeAPIReady()
        {player=new YT.Player('playerId',{events:{onReady:onPlayerReady}})}
        function onPlayerReady(event){player.mute();player.setVolume(0);player.playVideo();}
        </script>
        <iframe id='playerId' type='text/html' width='1280' height='720'
        src='https://www.youtube.com/embed/R52bof3tvZs?enablejsapi=1&rel=0&playsinline=1&autoplay=1&showinfo=0&autohide=1&controls=0&modestbranding=1' frameborder='0'>
        </body></html>

＆＃13;

Answer 4

您可以选择视频播放器，然后设置其音量：

var mp = iframe.getElementById('movie_player');
mp.setVolume(0);

来源：http://userscripts.org/scripts/review/49366

Answer 5

接受的答案非常有效。我想要更多控制，所以我在脚本中添加了更多功能：

function unmuteVideo() {
    player.unMute();
    return false;
  }
  function muteVideo() {
    player.mute();
    return false;
  }
  function setVolumeVideo(volume) {
    player.setVolume(volume);
    return false;
  }

这是HTML：

<br>
<button type="button" onclick="unmuteVideo();">Unmute Video</button>
<button type="button" onclick="muteVideo();">Mute Video</button>
<br>
<br>
<button type="button" onclick="setVolumeVideo(100);">Volume 100%</button>
<button type="button" onclick="setVolumeVideo(75);">Volume 75%</button>
<button type="button" onclick="setVolumeVideo(50);">Volume 50%</button>
<button type="button" onclick="setVolumeVideo(25);">Volume 25%</button>

现在您可以更好地控制声音...... 请查看参考URL以获取更多信息：

YouTube IFrame Player API

Answer 6

var video1;

function onYouTubeIframeAPIReady(){
	player = new YT.Player("video1", {
		videoId: "id-number",
		width: 300,
		height: 200, 
		playerVars: {
			"autoplay": 1, // and 0 means off
			"controls": 1,
			"showinfo": 0,
			"modestbranding": 0,
			"loop": 1,
			"fs": 0,
			"cc_load_policy": 0,
			"iv_load_policy": 3,
			},
		events: {
		    'onReady': onPlayerReady
		}
	});
  }

function onPlayerReady(event) {
    event.target.mute();
    event.target.setVolume(0); //this can be set from 0 to 100
}

请记住，IE和Safari中的声音不会被静音。

Answer 7

更新 2021 以在桌面/移动设备上循环播放和自动播放视频（在 iPhone X - Safari 上测试）。

我正在使用 onPlayerStateChange 事件，如果视频结束，我会再次播放视频。参考 YouTube API 中的 onPlayerStateChange event。

<div id="player"></div>
<script>
  var tag = document.createElement('script');

  tag.src = "https://www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  var player;

  function onYouTubeIframeAPIReady() {
    player = new YT.Player('player', {
      height: '100%',
      width: '100%',
      playerVars: {
        autoplay: 1,
        loop: 1,
        controls: 0,
        showinfo: 0,
        autohide: 1,
        playsinline: 1,
        mute: 1,
        modestbranding: 1,
        vq: 'hd1080'
      },
      videoId: 'ScMzIvxBSi4',
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }

  function onPlayerReady(event) {
    event.target.mute();

    setTimeout(function() {
      event.target.playVideo();
    }, 0);
  }

  function onPlayerStateChange(event) {
    if (event.target.getPlayerState() == 0) {
      setTimeout(function() {
        event.target.playVideo();
      }, 0);
    }
  }
</script>

如何自动播放Youtube视频（IFrame API）静音？

7 个答案: