Bootstrap Carousel - 在活动幻灯片上自动播放视频

Question

我一直在尝试使用 Bootstrap Carousel 制作一部互动纪录片。为此，我希望活动幻灯片上的视频自动播放。我读过，除非视频静音，否则不可能自动播放，但如果您只需单击一次音量按钮即可自动播放所有内容，我不介意，但我还不知道如何做到这一点。在 Chrome 上，不会自动播放任何内容，您必须手动播放每个视频。使用 Safari 时，一旦用户之前与页面进行过交互，视频就会自动播放，但问题是它们都会同时自动播放，即使视频位于不活动的幻灯片上（有声音）。有谁知道解决方案吗？

我的HTML：

<div id="myCarousel" class="carousel slide" data-interval="false">

<ol class="carousel-indicators">

    <li data-target="#myCarousel" data-slide-to="0" class="active"></li>

    <li data-target="#myCarousel" data-slide-to="1"></li>

    <li data-target="#myCarousel" data-slide-to="2"></li>

  </ol>

  <div class="carousel-inner">

    <div class="carousel-item active"> 

        <video controls autoplay loop muted class="myvid" id="player">

            <source src="assets/img/intro.mp4" type="video/mp4">

            </video>

    </div>

    <div class="carousel-item">

         <video controls autoplay class="myvid" id="player2">

            <source src="assets/img/Placeholder Video.mp4" type="video/mp4">

            </video>

 </div>

  </div>

  <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">

    <span class="carousel-control-prev-icon" aria-hidden="true"></span>

    <span class="sr-only">Vorige</span>

  </a>

  <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">

    <span class="carousel-control-next-icon" aria-hidden="true"></span>

    <span class="sr-only">Volgende</span>

  </a>

</div>

我的 JavaScript：

  

}).on('slide.bs.carousel', function () {

  document.getElementById('player').pause();

});

/* SLIDE ON CLICK */ 

$('.carousel-indicators > li > a').click(function() {

    // grab href, remove pound sign, convert to number

    var item = Number($(this).attr('href').substring(1));

    // slide to number -1 (account for zero indexing)

    $('#myCarousel').carousel(item - 1);

    // remove current active class

    $('.carousel-indicators .active').removeClass('active');

    // add active class to just clicked on item

    $(this).parent().addClass('active');

    // don't follow the link

    return false;

});

提前致谢。

Answer 1

您可以这样使用Bootstrap 4 Carousel 事件：let allVids = $("#myCarousel").find('.carousel-item');allVids.each(function(index, el) {  if (index !== 0) {    $(this).find('video')[0].pause();  }});$("#myCarousel").on('slide.bs.carousel', function(ev) {  let slides = $(this).find('.carousel-item');  let pvid = slides[ev.from].querySelectorAll('video')[0];  let vid = slides[ev.to].querySelectorAll('video')[0];  let isPlaying = vid.currentTime > 0 && vid.readyState > 2;  vid.play();  if (isPlaying) {    pvid.pause();  }});#myCarousel {  max-width: 1200px;  margin: 0 auto;}.carousel-control-next, .carousel-control-prev {    width: 9% !important;}.carousel-inner {  background: #111;}.carousel-indicators {  bottom: -13px !important;}.carousel-item {  padding-bottom: 25px;}video {  width: 100%;}<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script><script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script><script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.0/js/bootstrap.min.js" integrity="sha384-3qaqj0lc6sV/qpzrc1N5DC6i1VRn/HyX4qdPaiEFbn54VjQBEU341pvjz7Dv3n6P" crossorigin="anonymous"></script><link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.0/css/bootstrap.min.css" integrity="sha384-SI27wrMjH3ZZ89r4o+fGIJtnzkAnFs3E4qz9DIYioCQ5l9Rd/7UAa8DHcaL8jkWt" crossorigin="anonymous"><div id="myCarousel" class="carousel slide" data-interval="false">  <ol class="carousel-indicators">    <li data-target="#myCarousel" data-slide-to="0" class="active"></li>    <li data-target="#myCarousel" data-slide-to="1"></li>    <li data-target="#myCarousel" data-slide-to="2"></li>  </ol>  <div class="carousel-inner">    <div class="carousel-item active">      <video controls autoplay loop muted class="myvid" id="player">            <source src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" type="video/mp4">            </video>    </div>    <div class="carousel-item">      <video controls autoplay class="myvid" id="player2">            <source src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" type="video/mp4">            </video>    </div>    <div class="carousel-item">      <video controls autoplay class="myvid" id="player2">            <source src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerBlazes.mp4" type="video/mp4">            </video>    </div>  </div>  <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">    <span class="carousel-control-prev-icon" aria-hidden="true"></span>    <span class="sr-only">Vorige</span>  </a>  <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">    <span class="carousel-control-next-icon" aria-hidden="true"></span>    <span class="sr-only">Volgende</span>  </a></div>