Video.js简单使用
今天项目中需要跨浏览器地播放视频，在网上找了一下，找到了video.js，记录一下video.js的简单用法。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | <html> <head> ... <!-- 引入video.js的样式文件 --> <link rel="stylesheet" type="text/css" href="css/video-js.css" /> ... <!-- 如果没有使用Modernizr，则使用以下代码做shiv --> <script type="text/javascript"> document.createElement('video');document.createElement('audio');document.createElement('track'); </script> ... <!-- 引入video.js的脚本文件 --> <script src="js/video.js" type="text/javascript" charset="utf-8"></script> <!-- 指定videojs的flash文件 --> <script type="text/javascript"> videojs.options.flash.swf = "js/video-js.swf"; </script> ... </head> <body> ... <video id="sample_video" preload="none" class="video-js vjs-default-skin vjs-big-play-centered" data-setup='{ "controls": true, "autoplay": false, "preload": "none", "poster": "images/sample_video_poster.png", "width": 852, "height": 480 }'> <source src="videos/sample_video.mp4" type='video/mp4' /> <!-- 如果浏览器不兼容HTML5则使用flash播放 --> <object id="sample_video" class="vjs-flash-fallback" width="852" height="480" type="application/x-shockwave-flash" data="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf"> <param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" /> <param name="allowfullscreen" value="true" /> <param name="flashvars" value='config={"playlist":["images/sample_video_poster.png", {"url": "videos/sample_video.mp4","autoPlay":false,"autoBuffering":true}]}' /> <!-- 视频图片. --> <img src="images/sample_video.png" width="852" height="480" alt="Poster Image" title="No video playback capabilities." /> </object> </video> ... <script type="text/javascript"> var myPlayer = null; $(document).ready(function() { ... if(!myPlayer) { // Using the video's ID or element myPlayer = videojs("video_center_video"); } // After you have references to your players you can...(example) myPlayer.play(); // Starts playing the video for this player. ... }); </script> </body> </html> |
上面的用法是tag标签的使用办法，官方文档里还写了使用js初始化的办法，很简单，可参照https://github.com/videojs/video.js/blob/stable/docs/guides/setup.md
使用video.js有一个好处就是video标签或flashvars中可以指定多个视频源，它会根据浏览器自动寻找合适的视频进行播放。
不过今天使用video.js的时候发现一个问题，当设置了preload为auto之后，在chrome下首次刷新网页网络请求会出现一个错误。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 | Request URL: http://xxxxx/yyyy.mp4 Request Headers CAUTION: Provisional headers are shown. Accept-Encoding: identity;q=1, *;q=0 Cache-Control: max-age=0 Range: bytes=0- Referer: http://xxxxx User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36 |
暂时将preload设置为none规避此问题。
默认的video.js的样式不太好看，顺便附上从锤子网http://www.smartisan.com/爬下来的样式文件。
| 1 2 3 4 5 | /*! 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.vjs-control:before{font-family:VideoJS;font-size:1.5em;position:absolute;top:0;left:0;width:100%;height:100%;text-align:center;text-shadow:1px 1px 1px rgba(0,0,0,.5)}.vjs-default-skin .vjs-control:focus:before,.vjs-default-skin .vjs-control:hover:before{text-shadow:0 0 1em #fff}.vjs-default-skin .vjs-control-text{border:0;clip:rect(0 0 0 0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}.vjs-default-skin .vjs-play-control{width:5em;cursor:pointer;background:url(../images/bg_player_icon.png) 27px 0 no-repeat}.vjs-default-skin.vjs-playing .vjs-play-control{background:url(../images/bg_player_icon.png) -33px 0 no-repeat}.vjs-default-skin .vjs-playback-rate .vjs-playback-rate-value{font-size:1.5em;line-height:2;position:absolute;top:0;left:0;width:100%;height:100%;text-align:center;text-shadow:1px 1px 1px rgba(0,0,0,.5)}.vjs-default-skin .vjs-playback-rate.vjs-menu-button .vjs-menu .vjs-menu-content{width:4em;left:-2em;list-style:none}.vjs-default-skin 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#000;text-align:center;vertical-align:middle;position:absolute;top:50%;margin-top:-.5em;width:100%}.vjs-error-display div{position:absolute;font-size:1.4em;text-align:center;bottom:1em;right:1em;left:1em}.vjs-error-display a,.vjs-error-display a:visited{color:#F4A460}.vjs-loading-spinner{background:url(../images/bg_player_loading.png) no-repeat;display:none;position:absolute;top:50%;left:50%;font-size:4em;line-height:1;width:61px;height:61px;margin-left:-30.5px;margin-top:-30.5px;opacity:.75;-webkit-animation:spin 1.5s infinite linear;-moz-animation:spin 1.5s infinite linear;-o-animation:spin 1.5s infinite linear;animation:spin 1.5s infinite linear}.video-js.vjs-error .vjs-loading-spinner{display:none!important;-webkit-animation:none;-moz-animation:none;-o-animation:none;animation:none}@-moz-keyframes spin{0%{-moz-transform:rotate(0deg)}100%{-moz-transform:rotate(359deg)}}@-webkit-keyframes spin{0%{-webkit-transform:rotate(0deg)}100%{-webkit-transform:rotate(359deg)}}@-o-keyframes 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.vjs-control-content:before{-webkit-box-shadow:0 0 1em #fff;-moz-box-shadow:0 0 1em #fff;box-shadow:0 0 1em #fff}.video-js{background-color:#000;position:relative;padding:0;font-size:10px;vertical-align:middle;font-weight:400;font-style:normal;font-family:Arial,sans-serif;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.video-js .vjs-tech{position:absolute;top:0;left:0;width:100%;height:100%}.video-js:-moz-full-screen{position:absolute}body.vjs-full-window{padding:0;margin:0;height:100%;overflow-y:auto}.video-js.vjs-fullscreen{position:fixed;overflow:hidden;z-index:1000;left:0;top:0;bottom:0;right:0;width:100%!important;height:100%!important;_position:absolute}.video-js:-webkit-full-screen{width:100%!important;height:100%!important}.video-js.vjs-fullscreen.vjs-user-inactive{cursor:none}.vjs-poster{background-repeat:no-repeat;background-position:50% 50%;background-size:contain;cursor:pointer;height:100%;margin:0;padding:0;position:relative;width:100%}.vjs-poster img{display:block;margin:0 auto;max-height:100%;padding:0;width:100%}.video-js.vjs-using-native-controls .vjs-poster{display:none}.video-js .vjs-text-track-display{text-align:center;position:absolute;bottom:4em;left:1em;right:1em}.video-js.vjs-user-inactive.vjs-playing .vjs-text-track-display{bottom:1em}.video-js .vjs-text-track{display:none;font-size:1.4em;text-align:center;margin-bottom:.1em;background-color:#000;background-color:rgba(0,0,0,.5)}.video-js .vjs-subtitles{color:#fff}.video-js .vjs-captions{color:#fc6}.vjs-tt-cue{display:block}.vjs-default-skin .vjs-hidden{display:none}.vjs-lock-showing{display:block!important;opacity:1;visibility:visible}.vjs-no-js{padding:20px;color:#ccc;background-color:#333;font-size:18px;font-family:Arial,sans-serif;text-align:center;width:300px;height:150px;margin:0 auto}.vjs-no-js a,.vjs-no-js a:visited{color:#F4A460} |
样式中引用了几张图片，从锤子网http://www.smartisan.com/上下载就可以了
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