带循环的 Youtube 播放器 api

Question

我正在努力使用 youtube player api 为 youtube 视频设置循环。

问题是视频没有在循环下运行。

这是我的代码

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: '390',
          width: '640',

          playerVars: {
            'controls': 0,           
            'showinfo': 0,
            'rel': 0,
            'loop': 1

          },
          videoId: 'qzZuBWMnS08',
          events: {
            'onReady': onPlayerReady,
           // 'onStateChange': onPlayerStateChange
          }
        });
      }
function onPlayerReady(event) {
        //  event.target.setLoop(true);
        event.target.playVideo();
      }

循环：1 似乎不起作用。还有什么方法可以从视频顶部删除分享和视频标题。

提前致谢。

Answer 1

如果视频没有变化，你可以这样做

onStateChange: 
    function(e) {
        if (e.data === YT.PlayerState.ENDED) {
            player.playVideo(); 
        }
    }

这将防止不必要地重新加载视频

Answer 2

这是我用于 API IFrame 视频循环的内容。我注意到您必须包含“播放列表：VIDEO_ID”参数。它有效。这是我的例子

<script>
  // Load the IFrame Player API code asynchronously.
  var tag = document.createElement('script');
  tag.src = "https://www.youtube.com/player_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  // Replace the 'ytplayer' element with an <iframe> and
  // YouTube player after the API code downloads.
  var player;

  function onYouTubePlayerAPIReady() {
    player = new YT.Player('ytplayer', {
      height: '390',
      width: '640',
      videoId: 'VIDEO_ID',
      playerVars: {
        playlist: 'VIDEO_ID',
        loop: 1
      }
    });
  }
</script>

Answer 3

如documentation 中所述，您需要将playlist 参数设置为视频ID，以便循环工作。

您会希望 showinfo 参数隐藏标题等。

Answer 4

在你的 onPlayerStateChange 中试试这个，YouTube 希望你以某种方式再次输入 videoID。

onStateChange: function(e){
    var id = 'qzZuBWMnS08';

    if(e.data === YT.PlayerState.ENDED){
        player.loadVideoById(id);
    }
}

Answer 5

我得到这个工作来给我设置超低音量的循环视频来播放视频。您可以通过将音量从 2 更改为 0 来静音。

还要确保将您的视频添加到播放列表中。显然这是现在的一个问题。并在代码中的播放列表和videoid区域使用video id。

我确定我有额外的步骤或冗余步骤，因为我没有编码器。

我只知道这行得通。

    <div id="player">
<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: '315',
          width: '600',
          videoId: 'DrrH-YTvVVc',
          playerVars: {
          playlist: 'DrrH-YTvVVc',
          loop: 1      }       ,
   events: {
            'onReady': onPlayerReady,
            'onStateChange': onPlayerStateChange
          }
        });
      }
      // 4. The API will call this function when the video player is ready.
      function onPlayerReady(event) {
           event.target.setVolume(2);
       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 = true;
      function onPlayerStateChange(event) {
        if (event.data == YT.PlayerState.ENDED) {
    //      setTimeout(stopVideo, 6000);
                  player.playVideo();
        }
           event.target.setVolume(2);
      }
</script></div>

Answer 6

工作循环示例（02-2019）

<div id="ytplayer">
<script>
  var tag = document.createElement('script');
  tag.src = "https://www.youtube.com/player_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
  var player;
  function onYouTubePlayerAPIReady() {
    player = new YT.Player('ytplayer', {
      width: '640',
      height: '360',

          // 1. Video_Id
          videoId: 'AfAwsdbj04I',

      playerVars: { 
          autoplay: 1,
          loop: 1,
          controls: 0,
          rel: 0,
          modestbranding: 1,

          // 2. Playlist_Id (don't forget "PL")
          playlist: 'PLxWQS97ZR2-_c2eqKxSHxEu7v462-qnYM'

      },
      events: {
        'onReady': onPlayerReady,
        'onStateChange': onPlayerStateChange
      }
    });
  }
  function onPlayerReady(event) {
    event.target.setVolume(80);
    event.target.playVideo();
 //  player.mute();
  }
  function onPlayerStateChange(event) {
    if (event.data == YT.PlayerState.ENDED) {
      player.seekTo(0);
      player.playVideo();
    }
  }
  function stopVideo() {
    player.stopVideo();
  }
</script>
</div>

Answer 7

由于是html5播放器，我们可以直接在视频上点右键=>循环播放。

从脚本，到视频结尾重播：

document.getElementsByClassName('video-stream html5-main-video')[0].loop = true

两个时间点之间循环 1.66 秒：

const video = document.getElementsByClassName('video-stream html5-main-video')[0]

/* Loop markers in seconds */
let start = 54.34, end = 56

/* Seek to time in seconds */
function seek(time){
  video.loop = true
  video.currentTime = time
  video.play()
}

/* Loop between start and end */
function loop(e){
  if (e.target.currentTime > end){
    seek(start)
  }
}

/* Will loop for 1.66s */
video.addEventListener("timeupdate", loop, false)

/* Seek to 54.34s */
seek(start)

/* Abort the loop */
// video.removeEventListener("timeupdate", loop, false)

/* New loop */
// start = 14; end = 15; seek(start)

Media events list

HTMLMediaElement reference