HTML5 视频流行插件之video.js

Video.js 是一个通用的在网页上嵌入视频播放器的 JS 库，Video.js 自动检测浏览器对 HTML5 的支持情况，如果不支持 HTML5 则自动使用 Flash 播放器。

（要支持ie低版本请下载5.4.3版）点击进入官网

下载地址：http://www.jq22.com/jquery-info404

也可以使用cdn

<link href="//cdn.bootcss.com/video.js/7.0.0-alpha.1/alt/video-js-cdn.css" rel="stylesheet">
<script src="//cdn.bootcss.com/video.js/7.0.0-alpha.1/video.min.js"></script>

首先给video标签加上 video-js 的类

data-setup="{ }" 使控件样式发生改变

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js" controls data-setup="{}" width="960" height="400">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
</body>
</html>

vjs-big-play-centered 类，控制按钮居中显示

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="960" height="400">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
</body>
</html>

preload="auto" 预加载

线上观看时比较直观

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="960" height="400" preload="auto">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
</body>
</html>

poster=" " 设置封面图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
</body>
</html>

videojs是封装好的方法

.ready 表示视频已就绪，类似于 canplay（其实完全不如canplay，下面案例有体现）

.currentTime() 当前时间

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");
        myvideo.ready(function(){
            console.log("已就绪");
        });

        //绑定在window上，点击可获取当前时间进度
        onclick=function(){
            console.log(myvideo.currentTime());
        }
    </script>
</body>
</html>

（报错是因为之前有语法错误，已修正。这里贴的代码都是木有问题的）

current(time) 设置当前播放时间

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        //100秒处开始播放
        myvideo.currentTime(100);

        myvideo.ready(function(){
            console.log("已就绪");
        });

        //绑定在window上，点击可获取当前时间进度
        onclick=function(){
            console.log(myvideo.currentTime());
        }
    </script>
</body>
</html>

.duration() 获取视频总时长

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        //100秒处开始播放
        myvideo.currentTime(100);

        myvideo.ready(function(){
            //在ready中显示NaN
            console.log(this.duration());
        });

        //绑定在window上
        onclick=function(){
            console.log(myvideo.duration());
        }
    </script>
</body>
</html>

在这里可以看出 ready不如canplay

因为canplay中已经可以获取到总时长，而ready中还是NaN，有点辣鸡啊

buffered() 视频已经缓冲了多少

不在本地测试比较明显

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        //100秒处开始播放
        myvideo.currentTime(100);

        myvideo.ready(function(){
            //缓冲
            console.log(this.buffered());
        });

        //绑定在window上
        onclick=function(){
            console.log(myvideo.duration());
        }
    </script>
</body>
</html>

volume() 获取和设置声音

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        //获取声音
        console.log(myvideo.volume());

        //设置声音
        myvideo.volume(.5);

        console.log(myvideo.volume());

    </script>
</body>
</html>

width() height() 获取和设置视频的宽高

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        //获取宽高
        console.log(myvideo.width());
        console.log(myvideo.height());

        myvideo.width(300);
        myvideo.height(200);

        console.log(myvideo.width());
        console.log(myvideo.height());

    </script>
</body>
</html>

如何查看更多方法：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        console.log(myvideo);



    </script>
</body>
</html>

事件监听 on

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>videojs</title>
    <link rel="stylesheet" href="video-js.min.css">
</head>
<body>
    <video id="myvideo" class="video-js vjs-big-play-centered" controls data-setup="{}" width="660" height="400" preload="auto" poster="data/poster.jpg">
        <source src="data/imooc.mp4"></source>
    </video>
    
    <script src="video.min.js"></script>
    <script>
        var myvideo=videojs("myvideo");

        myvideo.on("ended",function(){
            console.log("视频播放结束");
        })

        myvideo.on("pause",function(){
            console.log("点击暂停");
        })

        myvideo.on("play",function(){
            console.log("点击播放");
        })

        myvideo.on("volumechange",function(){
            console.log("声音改变");
        })

        myvideo.on("timeupdate",function(){
            console.log("视频播放中");
        })

        myvideo.on("seeked",function(){
            console.log("视频跳转结束");
        })

        myvideo.on("seeking",function(){
            console.log("视频跳转中");
        })



    </script>
</body>
</html>