我有多张带有视频和图像的幻灯片。Carousel 设置为加载时自动播放。但是当有人播放视频并将鼠标移出一侧时，它会一直滑动（如预期的那样）。
如何跟踪视频的播放和暂停时间？我搜索了 Stack Overflow，但没有找到类似的问题。
站点管理员稍后将添加视频，以便它们可以是 iframe 或 html5 视频。所以，我需要一个对两者都适用的解决方案。
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3 回答
7
这对我来说可以在播放原生 HTML5 视频时暂停 Bootstrap 轮播，并在视频暂停或播放完毕时再次播放。我是一个完全的 JS 新手，但我四处搜索并将一些东西串在一起。我可能犯了一个错误（可能），但它对我有用。
我不是通过 ID 调用视频，因为我希望该操作适用于轮播中播放的任何视频。我有几个在我的情况下。
请注意更改轮播的 ID 以匹配您的 ID。
<script>
$('video').on('play', function (e) {
$("#portfolioCarousel").carousel('pause');
});
$('video').on('stop pause ended', function (e) {
$("#portfolioCarousel").carousel();
});
</script>
于 2015-12-30T20:41:53.977 回答
2
$("#myCarousel").carousel('暂停'); 停止它 $("#myCarousel").carousel(); 再次启动它 http://www.w3.org/2010/05/video/mediaevents.html 有很多事件你应该再次启动它甚至暂停，结束的事件被触发并暂停播放。
对于 youtube，我不确定您如何集成它，但他们确实有 js api，因此 https://developers.google.com/youtube/js_api_reference#Events 将向您显示您可以收听的事件，并且您可以像使用 html5 视频一样做
于 2013-06-21T18:01:07.787 回答
2
为了让 Youtube iframe 视频在播放视频时触发轮播的滑动暂停，您需要有一个关于视频是否被视为“正在播放”的指示器。您可以通过使用带有 JavaScript 的 Youtube iframe API 的播放器功能来实现这一点。
- https://developers.google.com/youtube/iframe_api_reference
- https://developers.google.com/youtube/iframe_api_reference#Playback_status
- https://developers.google.com/youtube/iframe_api_reference#Events
监听涉及这些状态的事件：
- YT.PlayerState.PLAYING
- YT.PlayerState.BUFFERING
然后控制 Bootstrap 轮播滑过.carousel('pause')：
为了能够监听此类事件，您可以在 JavaScript 中添加一个名为“onPlayerStateChange”的函数（如 Youtube iframe API 中所述）：
function onPlayerStateChange(event) // triggered everytime ANY iframe video player among the "players" list is played, paused, ended, etc.
{
// Check if any iframe video is being played (or is currently buffering to be played)
// Reference: https://developers.google.com/youtube/iframe_api_reference#Events
if (event.data == YT.PlayerState.PLAYING || event.data == YT.PlayerState.BUFFERING)
{
// If any player has been detected to be currently playing or buffering, pause the carousel from sliding
// .carousel('pause') - Stops the carousel from cycling through items.
// Reference: https://getbootstrap.com/docs/4.4/components/carousel/#methods
$('#moviesCarousel').carousel('pause');
}
else
{
// If there are no currently playing nor buffering videos, resume the sliding of the carousel
// This means that once the current video is in a state that is not playing (aside from buffering so either it was paused, or has ended, or wasn't totally played), then the carousel would now resume sliding
$('#moviesCarousel').carousel();
}
}
作为参考，这里是完整的工作 HTML（直接工作，无需修改）：
<!doctype html>
<html lang="en">
<head>
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
</head>
<body>
<!-- Buttons for manually sliding the carousel -->
<div class="btn-group col-lg-8" role="group" aria-label="Carousel controls">
<button id="prevMovie" type="button" class="btn btn-danger">Prev</button>
<button id="nextMovie" type="button" class="btn btn-info">Next</button>
</div>
<!-- The carousel containing the Youtube iframe videos -->
<!-- Remember to add the ?enablejsapi=1 in the Youtube embed link as described in: -->
<!-- https://developers.google.com/youtube/iframe_api_reference#Example_Video_Player_Constructors -->
<div id="moviesCarousel" class="carousel slide col-lg-8" data-ride="carousel" data-interval="2000">
<div class="carousel-inner embed-responsive embed-responsive-16by9"> <!-- embed is used for responsive size regardless of device -->
<div class="carousel-item embed-responsive-item active">
<iframe id="katniss" src="https://www.youtube.com/embed/v98Rh9qzmPs?enablejsapi=1" allowfullscreen></iframe>
</div>
<div class="carousel-item embed-responsive-item">
<iframe id="rancho" src="https://www.youtube.com/embed/-MlkASchodc?enablejsapi=1" allowfullscreen></iframe>
</div>
<div class="carousel-item embed-responsive-item">
<iframe id="logan" src="https://www.youtube.com/embed/UgJr0bNmTL8?enablejsapi=1" allowfullscreen></iframe>
</div>
</div>
</div>
<!-- jQuery first, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<script>
$(document).ready(function()
{
// Slide the carousel upon button click
// .carousel('prev') - Cycles to the previous item
// .carousel('next') - Cycles to the next item.
// Reference: https://getbootstrap.com/docs/4.4/components/carousel/#methods
$('#prevMovie').on('click', function() {
$('#moviesCarousel').carousel('prev');
});
$('#nextMovie').on('click', function() {
$('#moviesCarousel').carousel('next');
});
// When a slide occurs, pause the current iframe video that is playing
// player.pauseVideo():Void - Pauses the currently playing video.
// Reference: https://developers.google.com/youtube/iframe_api_reference#Playback_controls
$('#moviesCarousel').on('slide.bs.carousel', function(event) {
// The variable "players" contain each Youtube Player for each iframe video
// Reference: https://developers.google.com/youtube/iframe_api_reference#Loading_a_Video_Player
// event.from - The index of the current video (before the slide occurs)
// - It is also the index of the corresponding player for the current video
// Reference: https://getbootstrap.com/docs/4.4/components/carousel/#events
players[event.from].pauseVideo();
});
});
// Start of snippet from: https://developers.google.com/youtube/iframe_api_reference
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 players = []; // would contain 1 player for each iframe video
function onYouTubeIframeAPIReady()
{
var allMovieIframes = document.getElementById("moviesCarousel").getElementsByTagName('iframe');
for (currentIFrame of allMovieIframes)
{
players.push(new YT.Player(
currentIFrame.id, // the target iframe video, here it is either katniss, rancho, or logan
{ events: { 'onStateChange': onPlayerStateChange } }
));
}
}
function onPlayerStateChange(event) // triggered everytime ANY iframe video player among the "players" list is played, paused, ended, etc.
{
// Check if any iframe video is being played (or is currently buffering to be played)
// Reference: https://developers.google.com/youtube/iframe_api_reference#Events
if (event.data == YT.PlayerState.PLAYING || event.data == YT.PlayerState.BUFFERING)
{
// If any player has been detected to be currently playing or buffering, pause the carousel from sliding
// .carousel('pause') - Stops the carousel from cycling through items.
// Reference: https://getbootstrap.com/docs/4.4/components/carousel/#methods
$('#moviesCarousel').carousel('pause');
}
else
{
// If there are no currently playing nor buffering videos, resume the sliding of the carousel
// This means that once the current video is in a state that is not playing (aside from buffering so either it was paused, or has ended, or wasn't totally played), then the carousel would now resume sliding
$('#moviesCarousel').carousel();
}
}
// End of snippet from Youtube iframe API
</script>
</body>
</html>
于 2020-05-07T07:54:36.667 回答