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這篇文章將為大家詳細講解有關如何利用HTML5制作一個好看的視頻播放器,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
一、視頻的格式
目前比較主流和使用比較的的視頻格式主要有:avi、rmvb、wmv、mpeg4、ogg、webm。這些視頻都是由視頻、音頻、編碼格式三部分組成的。在HTML5中,根據瀏覽器的不同,目前擁有多套不同的編碼器:
H.264(個人不看好):這個編碼器是蘋果系統包括蘋果手機中的編碼器,擁有專利的視頻編碼器。在編碼及傳輸過程中的任何部分都可能需要收取專利費。因此Safari(蘋果的瀏覽器)和Intenet Explorer支持該編碼器,但是在開源已經成為大勢的當下,還在瀏覽器中收取專利費,個人實在是不看好啊。
Theora:這是一個不受專利限制的編碼格式,并且對所有等級的編碼、傳輸以及回放免費的視頻編碼器。Chrome、Firefox以及Opera支持該編碼器。
VP8:該視頻編碼器與Theora相似,但是其擁有者是Google公司,Google公司已經開源,因此不需要專利費。Chrome、Firefox以及Opera支持該編碼器。
AAC:音頻編碼器,與H.264相同,該音頻編碼器擁有專利限制,Safari、Chrome和Internet Explorer支持該音頻編碼器。
MP3:也是一個專利技術,Safari、Chrome和Internet Explorer支持該音頻編碼器。
PCM:存儲由模擬數字轉換器編碼的完整數據,在音頻CD上存儲數據的一種格式。是以中國無損編碼器,它的文件大小一般是AAC和MP3文件的幾倍,Safari、Firefox和Internet Explorer支持該音頻編碼器。
Vorbis:文件擴展名為.ogg,有時候也被稱為Ogg Vorbis,該音頻編碼器不受專利保護,因此版權免費。支持的瀏覽器包括Chrome、Firefox和Opera.
主流瀏覽器和設備支持的視頻和音頻
二、HTML5中的<vido>屬性
在html5中可以使用<audio>或者<video>標簽播放html5媒體,使用方式如下
<video src="move.mp4"></video>
video標簽中有很多屬性,例如controls屬性可以控制是否有控制臺。
<video src="move.mp4" controls="controls"> 瀏覽器不支持HTML5的視頻播放功能 </video>
從上面的視頻格式中我們可以看到不同的瀏覽器支持不同的視頻格式,這樣我們可以采用<source>標簽指定多種格式的視頻,默認情況下瀏覽器會自動啟動下載文件來確定其類型。
<video width="400" controls="controls"> <source src="move.mp4" type="video/mp4" /> <source src="move.ogg" type="video/ogg" /> </video>
三、制作視頻播放器
index.html
<!DOCTYPE html> <html> <head> <title>Demo 1 | Custom HTML5 Video Controls with jQuery</title> <link rel="stylesheet" href="../vendorstyle.css" /> <link rel="stylesheet" href="style.css" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <!--[if lt IE 9]> <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <script src="../vendorscript.js"></script> <script src="video.js"></script> <!--[if lt IE 9]> <script> $(document).ready(function() { $('.control').hide(); $('.loading').fadeOut(500); $('.caption').fadeOut(500); }); </script> <![endif]--> <link rel="shortcut icon" href="http://www.inwebson.com/wp-content/themes/inwebson/favicon.ico" /> </head> <body> <!-- Header --> <header> <h2>Custom HTML5 Video Controls with jQuery</h2> <p id="backlinks"> <a href="http://www.inwebson.com/custom-html5-video-controls-with-jquery-and-css/">BACK TO ARTICLE ?</a> <a href="http://www.inwebson.com">Visit inWebson.com ?</a> </p> <p class="clearfix"></p> </header> <!-- Content --> <section id="wrapper"> <!-- Title --> <h3>Demo 1</h3> <h4>Custom HTML5 Video Controls</h4> <p class="videoContainer"> <video id="myVideo" controls preload="auto" poster="poster.jpg" width="600" height="350" > <source src="http://demo.inwebson.com/html5-video/iceage4.mp4" type="video/mp4" /> <source src="http://demo.inwebson.com/html5-video/iceage4.webm" type="video/webM" /> <source src="http://demo.inwebson.com/html5-video/iceage4.ogv" type="video/ogg" /> <p>Your browser does not support the video tag.</p> </video> <p class="caption">This is HTML5 video with custom controls</p> <p class="control"> <p class="topControl"> <p class="progress"> <span class="bufferBar"></span> <span class="timeBar"></span> </p> <p class="time"> <span class="current"></span> / <span class="duration"></span> </p> </p> <p class="btmControl"> <p class="btnPlay btn" title="Play/Pause video"></p> <p class="btnStop btn" title="Stop video"></p> <p class="spdText btn">Speed: </p> <p class="btnx1 btn text selected" title="Normal speed">x1</p> <p class="btnx3 btn text" title="Fast forward x3">x3</p> <p class="btnFS btn" title="Switch to full screen"></p> <p class="btnLight lighton btn" title="Turn on/off light"></p> <p class="volume" title="Set volume"> <span class="volumeBar"></span> </p> <p class="sound sound2 btn" title="Mute/Unmute sound"></p> </p> </p> <p class="loading"></p> </p> <!-- Navigation --> <nav id="navigation"> <ul> <li class="currentbtn"><a href="#" title="Demo 1">DEMO 1</a></li> <li><a href="../demo2/" title="Demo 2">DEMO 2</a></li> </ul> <p class="clearfix"></p> </nav> </section> <!-- Footer --> <footer> <span>? 2011 <a href="http://www.inwebson.com">inWebson.com</a>. Design by <a href="http://www.inwebson.com/contactus">Kenny Ooi</a>. Powered by <a href="http://www.inwebson.com/html5/">HTML5</a> and <a href="http://www.inwebson.com/jquery/">jQuery</a>.</span> </footer> </body> </html>
style.css
/* video container */ .videoContainer{ width:600px; height:350px; position:relative; overflow:hidden; background:#000; color:#ccc; } /* video caption css */ .caption{ display:none; position:absolute; top:0; left:0; width:100%; padding:10px; color:#ccc; font-size:20px; font-weight:bold; box-sizing: border-box; -ms-box-sizing: border-box; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; background: #1F1F1F; /* fallback */ background:-moz-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-webkit-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-o-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); } /*** VIDEO CONTROLS CSS ***/ /* control holder */ .control{ background:#333; color:#ccc; position:absolute; bottom:0; left:0; width:100%; z-index:5; display:none; } /* control top part */ .topControl{ height:11px; border-bottom:1px solid #404040; padding:1px 5px; background:#1F1F1F; /* fallback */ background:-moz-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-webkit-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-o-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); } /* control bottom part */ .btmControl{ clear:both; background: #1F1F1F; /* fallback */ background:-moz-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-webkit-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); background:-o-linear-gradient(top,#242424 50%,#1F1F1F 50%,#171717 100%); } .control p.btn { float:left; width:34px; height:30px; padding:0 5px; border-right:1px solid #404040; cursor:pointer; } .control p.text{ font-size:12px; font-weight:bold; line-height:30px; text-align:center; font-family:verdana; width:20px; border:none; color:#777; } .control p.btnPlay{ background:url(control.png) no-repeat 0 0; border-left:1px solid #404040; } .control p.paused{ background:url(control.png) no-repeat 0 -30px; } .control p.btnStop{ background:url(control.png) no-repeat 0 -60px; } .control p.spdText{ border:none; font-size:14px; line-height:30px; font-style:italic; } .control p.selected{ font-size:15px; color:#ccc; } .control p.sound{ background:url(control.png) no-repeat -88px -30px; border:none; float:right; } .control p.sound2{ background:url(control.png) no-repeat -88px -60px !important; } .control p.muted{ background:url(control.png) no-repeat -88px 0 !important; } .control p.btnFS{ background:url(control.png) no-repeat -44px 0; float:right; } .control p.btnLight{ background:url(control.png) no-repeat -44px -60px; border-left:1px solid #404040; float:right; } .control p.lighton{ background:url(control.png) no-repeat -44px -30px !important; } /* PROGRESS BAR CSS */ /* Progress bar */ .progress { width:85%; height:10px; position:relative; float:left; cursor:pointer; background: #444; /* fallback */ background:-moz-linear-gradient(top,#666,#333); background:-webkit-linear-gradient(top,#666,#333); background:-o-linear-gradient(top,#666,#333); box-shadow:0 2px 3px #333 inset; -moz-box-shadow:0 2px 3px #333 inset; -webkit-box-shadow:0 2px 3px #333 inset; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; } .progress span { height:100%; position:absolute; top:0; left:0; display:block; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; } .timeBar{ z-index:10; width:0; background: #3FB7FC; /* fallback */ background:-moz-linear-gradient(top,#A0DCFF 50%,#3FB7FC 50%,#16A9FF 100%); background:-webkit-linear-gradient(top,#A0DCFF 50%,#3FB7FC 50%,#16A9FF 100%); background:-o-linear-gradient(top,#A0DCFF 50%,#3FB7FC 50%,#16A9FF 100%); box-shadow:0 0 1px #fff; -moz-box-shadow:0 0 1px #fff; -webkit-box-shadow:0 0 1px #fff; } .bufferBar{ z-index:5; width:0; background: #777; background:-moz-linear-gradient(top,#999,#666); background:-webkit-linear-gradient(top,#999,#666); background:-o-linear-gradient(top,#999,#666); box-shadow:2px 0 5px #333; -moz-box-shadow:2px 0 5px #333; -webkit-box-shadow:2px 0 5px #333; } /* time and duration */ .time{ width:15%; float:right; text-align:center; font-size:11px; line-height:12px; } /* VOLUME BAR CSS */ /* volume bar */ .volume{ position:relative; cursor:pointer; width:70px; height:10px; float:right; margin-top:10px; margin-right:10px; } .volumeBar{ display:block; height:100%; position:absolute; top:0; left:0; background-color:#eee; z-index:10; } /* OTHERS CSS */ /* video screen cover */ .loading, #init{ position:absolute; top:0; left:0; width:100%; height:100%; background:url(loading.gif) no-repeat 50% 50%; z-index:2; display:none; } #init{ background:url(bigplay.png) no-repeat 50% 50% !important; cursor:pointer; }
video.js
$(document).ready(function(){ //INITIALIZE var video = $('#myVideo'); //remove default control when JS loaded video[0].removeAttribute("controls"); $('.control').show().css({'bottom':-45}); $('.loading').fadeIn(500); $('.caption').fadeIn(500); //before everything get started video.on('loadedmetadata', function() { $('.caption').animate({'top':-45},300); //set video properties $('.current').text(timeFormat(0)); $('.duration').text(timeFormat(video[0].duration)); updateVolume(0, 0.7); //start to get video buffering data setTimeout(startBuffer, 150); //bind video events $('.videoContainer') .append('<p id="init"></p>') .hover(function() { $('.control').stop().animate({'bottom':0}, 500); $('.caption').stop().animate({'top':0}, 500); }, function() { if(!volumeDrag && !timeDrag){ $('.control').stop().animate({'bottom':-45}, 500); $('.caption').stop().animate({'top':-45}, 500); } }) .on('click', function() { $('#init').remove(); $('.btnPlay').addClass('paused'); $(this).unbind('click'); video[0].play(); }); $('#init').fadeIn(200); }); //display video buffering bar var startBuffer = function() { var currentBuffer = video[0].buffered.end(0); var maxduration = video[0].duration; var perc = 100 * currentBuffer / maxduration; $('.bufferBar').css('width',perc+'%'); if(currentBuffer < maxduration) { setTimeout(startBuffer, 500); } }; //display current video play time video.on('timeupdate', function() { var currentPos = video[0].currentTime; var maxduration = video[0].duration; var perc = 100 * currentPos / maxduration; $('.timeBar').css('width',perc+'%'); $('.current').text(timeFormat(currentPos)); }); //CONTROLS EVENTS //video screen and play button clicked video.on('click', function() { playpause(); } ); $('.btnPlay').on('click', function() { playpause(); } ); var playpause = function() { if(video[0].paused || video[0].ended) { $('.btnPlay').addClass('paused'); video[0].play(); } else { $('.btnPlay').removeClass('paused'); video[0].pause(); } }; //speed text clicked $('.btnx1').on('click', function() { fastfowrd(this, 1); }); $('.btnx3').on('click', function() { fastfowrd(this, 3); }); var fastfowrd = function(obj, spd) { $('.text').removeClass('selected'); $(obj).addClass('selected'); video[0].playbackRate = spd; video[0].play(); }; //stop button clicked $('.btnStop').on('click', function() { $('.btnPlay').removeClass('paused'); updatebar($('.progress').offset().left); video[0].pause(); }); //fullscreen button clicked $('.btnFS').on('click', function() { if($.isFunction(video[0].webkitEnterFullscreen)) { video[0].webkitEnterFullscreen(); } else if ($.isFunction(video[0].mozRequestFullScreen)) { video[0].mozRequestFullScreen(); } else { alert('Your browsers doesn\'t support fullscreen'); } }); //light bulb button clicked $('.btnLight').click(function() { $(this).toggleClass('lighton'); //if lightoff, create an overlay if(!$(this).hasClass('lighton')) { $('body').append('<p class="overlay"></p>'); $('.overlay').css({ 'position':'absolute', 'width':100+'%', 'height':$(document).height(), 'background':'#000', 'opacity':0.9, 'top':0, 'left':0, 'z-index':999 }); $('.videoContainer').css({ 'z-index':1000 }); } //if lighton, remove overlay else { $('.overlay').remove(); } }); //sound button clicked $('.sound').click(function() { video[0].muted = !video[0].muted; $(this).toggleClass('muted'); if(video[0].muted) { $('.volumeBar').css('width',0); } else{ $('.volumeBar').css('width', video[0].volume*100+'%'); } }); //VIDEO EVENTS //video canplay event video.on('canplay', function() { $('.loading').fadeOut(100); }); //video canplaythrough event //solve Chrome cache issue var completeloaded = false; video.on('canplaythrough', function() { completeloaded = true; }); //video ended event video.on('ended', function() { $('.btnPlay').removeClass('paused'); video[0].pause(); }); //video seeking event video.on('seeking', function() { //if video fully loaded, ignore loading screen if(!completeloaded) { $('.loading').fadeIn(200); } }); //video seeked event video.on('seeked', function() { }); //video waiting for more data event video.on('waiting', function() { $('.loading').fadeIn(200); }); //VIDEO PROGRESS BAR //when video timebar clicked var timeDrag = false; /* check for drag event */ $('.progress').on('mousedown', function(e) { timeDrag = true; updatebar(e.pageX); }); $(document).on('mouseup', function(e) { if(timeDrag) { timeDrag = false; updatebar(e.pageX); } }); $(document).on('mousemove', function(e) { if(timeDrag) { updatebar(e.pageX); } }); var updatebar = function(x) { var progress = $('.progress'); //calculate drag position //and update video currenttime //as well as progress bar var maxduration = video[0].duration; var position = x - progress.offset().left; var percentage = 100 * position / progress.width(); if(percentage > 100) { percentage = 100; } if(percentage < 0) { percentage = 0; } $('.timeBar').css('width',percentage+'%'); video[0].currentTime = maxduration * percentage / 100; }; //VOLUME BAR //volume bar event var volumeDrag = false; $('.volume').on('mousedown', function(e) { volumeDrag = true; video[0].muted = false; $('.sound').removeClass('muted'); updateVolume(e.pageX); }); $(document).on('mouseup', function(e) { if(volumeDrag) { volumeDrag = false; updateVolume(e.pageX); } }); $(document).on('mousemove', function(e) { if(volumeDrag) { updateVolume(e.pageX); } }); var updateVolume = function(x, vol) { var volume = $('.volume'); var percentage; //if only volume have specificed //then direct update volume if(vol) { percentage = vol * 100; } else { var position = x - volume.offset().left; percentage = 100 * position / volume.width(); } if(percentage > 100) { percentage = 100; } if(percentage < 0) { percentage = 0; } //update volume bar and video volume $('.volumeBar').css('width',percentage+'%'); video[0].volume = percentage / 100; //change sound icon based on volume if(video[0].volume == 0){ $('.sound').removeClass('sound2').addClass('muted'); } else if(video[0].volume > 0.5){ $('.sound').removeClass('muted').addClass('sound2'); } else{ $('.sound').removeClass('muted').removeClass('sound2'); } }; //Time format converter - 00:00 var timeFormat = function(seconds){ var m = Math.floor(seconds/60)<10 ? "0"+Math.floor(seconds/60) : Math.floor(seconds/60); var s = Math.floor(seconds-(m*60))<10 ? "0"+Math.floor(seconds-(m*60)) :Math.floor(seconds-(m*60)); return m+":"+s; }; });
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