小強的HTML5行動開發之路（5）－製作一個漂亮的影片播放器
- 黄舟原創
- 2018-05-24 14:40:0211406瀏覽
在前面幾篇文章中介紹了HTML5的特點和需要掌握的基礎知識，下面我們開始真正的體驗一下Html5的優勢，我們開始製作一個漂亮的視頻播放器吧先別急，在開始製作之前先了解一下視訊檔案的基本知識。
一、影片的格式
目前比較主流和使用比較的的影片格式主要有：avi、rmvb、wmv、mpeg4、ogg、webm。這些影片都是由影片、音訊、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，擁有專利的視訊編碼器。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支援該編碼器，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，並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支援此編碼器。
VP8：此視訊編碼器與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支援此編碼器。
AAC:音訊編碼器，與H.264相同，此音訊編碼器擁有專利限制，Safari、Chrome和Internet Explorer支援此音訊編碼器。
MP3：也是一個專利技術，Safari、Chrome和Internet Explorer支援此音訊編碼器。
PCM:儲存由類比數位轉換器編碼的完整數據，在音訊CD上儲存資料的一種格式。是以中國無損編碼器，它的檔案大小一般是AAC和MP3檔案的幾倍，Safari、Firefox和Internet Explorer支援此音訊編碼器。
Vorbis:檔案副檔名為.ogg，有時也稱為Ogg Vorbis,此音訊編碼器不受專利保護，因此版權免費。支援的瀏覽器包括Chrome、Firefox和Opera.
主流瀏覽器和裝置支援的視訊和音訊
二、HTML5中的
在html5中可使用
<video src="move.mp4"></video>
video標籤中有很多屬性，例如controls屬性可以控制是否有控制台。
<video src="move.mp4" controls="controls">
浏览器不支持HTML5的视频播放功能
</video>從上面的視頻格式中我們可以看到不同的瀏覽器支援不同的視頻格式，這樣我們可以採用
<video width="400" controls="controls">
<source src="move.mp4" type="video/mp4" />
<source src="move.ogg" type="video/ogg" />
</video>三、製作影片播放器
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>
<h1>Custom HTML5 Video Controls with jQuery</h1>
<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 -->
<h2>Demo 1</h2>
<h3>Custom HTML5 Video Controls</h3>
<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;
};
});以上就是 小強的HTML5行動裝置開發之路漂亮（5）－製作一個漂亮的影片播放器的內容，更多相關內容請關注PHP中文網（www.php.cn）！
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