我想從視頻文件中提取我的海報圖片,並希望在網頁上使用該圖片。從視頻中提取海報圖片
我的技術棧由spring mvc,hibernate,jpa,jQuery,jsp,html5,css3組成。
任何人都可以指導我如何做到這一點?
我想從視頻文件中提取我的海報圖片,並希望在網頁上使用該圖片。從視頻中提取海報圖片
我的技術棧由spring mvc,hibernate,jpa,jQuery,jsp,html5,css3組成。
任何人都可以指導我如何做到這一點?
工作正如@sjm建議,我發揮各地Popcorn.capture並試圖將下面的代碼,其是卓有成效
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Popcorn.capture.js Functional Examples</title>
<script src="http://cdn.popcornjs.org/code/dist/popcorn.min.js"></script>
<script src="../src/popcorn.capture.js"></script>
</head>
<body onload="myFunction()">
<div id="unmoved-fixture">
<video height="180" width="300" id="video-target" controls>
<source src="assets/popcorntest.mp4"></source>
<source src="assets/popcorntest.ogv"></source>
<source src="assets/popcorntest.webm"></source>
</video>
</div>
<pre>
</pre>
<script>
function myFunction() {
var $pop = Popcorn("#video-target"),
poster;
$pop.capture({
at: 10
});
}
</script>
</body>
</html>
以上代碼從視頻的第十第二捕獲的圖像和用於視頻創建海報圖像。
您可以從https://github.com/rwaldron/popcorn.capture/tree/master/src
它可能使用HTML5和帆布
Github上here
看到它在行動here
更多細節在這裏 - CREATING SCREENGRABS FROM HTML5 VIDEO WITH CANVAS
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Taking screengrabs from video in Canvas</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<style>
*{margin:0;padding:0;font-size:15px;font-family:calibri,arial,sans-serif}
footer,section,header{display:block;}
body{padding:2em;background:#666;color:#fff;}
h1{font-size:24px;margin:10px 0;}
h2{font-size:18px;margin:10px 0;color:lime;}
canvas{display:block;border:2px solid #000;}
#video,#canvas{float:left;padding-right:10px;}
#video{width:640px;}
#save li{list-style:none;margin:0;padding:0}
#save{clear:both;padding:10px 0;overflow:auto;}
#save img{float:left;padding-right:5px;padding-bottom:5px;}
footer a{color:lime;}
footer p{margin:5em 0 1em 0;padding:1em 0;border-top:1px solid #999}
</style>
</head>
<body>
<header><h1>Taking screengrabs from video in Canvas (Chrome, Mozilla, Opera, Safari - maybe IE (got no windows))</h1></header>
<section>
<p>Simply play the video. Every time you pause, you can see the screenshot on the right. Click the screenshot to store it in your collection below.</p>
<div id="video">
<h2>The Video:</h2>
<video controls>
<source src="meetthecubs.mp4" type="video/mp4"></source>
<source src="meetthecubs.webm" type="video/webm"></source>
</video>
</div>
<div id="canvas">
<h2>Preview (click to store images below):</h2>
<canvas></canvas>
</div>
<div id="save">
<h2>Your saved images:</h2>
<ul></ul>
</div>
</section>
<footer>
<p>Written by
<a href="http://wait-till-i.com/">Chris Heilmann</a> -
<a href="http://twitter.com/codepo8">@codepo8</a>
</p>
</footer>
<script>
(function(){
var v = document.querySelector('video'),
n = document.querySelector('source').src.replace(/.*\/|\..*$/g,''),
c = document.querySelector('canvas'),
save = document.querySelector('#save ul'),
ctx = c.getContext('2d');
v.addEventListener('loadedmetadata',function(ev){
var ratio = v.videoWidth/v.videoHeight,
w = 400,
h = parseInt(w/ratio, 10),
time = 0,
img = null,
li = null;
c.width = w;
c.height = h + 40;
v.addEventListener('timeupdate',function(ev){
if(v.paused){
ctx.fillStyle = 'rgb(0, 0, 0)';
ctx.fillRect(0, 0, w, h);
ctx.drawImage(v, 0, 40, w, h);
ctx.font = '20px Calibri';
ctx.fillStyle = 'lime';
ctx.fillText(n, 5, 20);
time = format(v.currentTime);
ctx.fillStyle = 'white';
ctx.fillText(time, 395 - ctx.measureText(time).width, 20);
}
},false);
c.addEventListener('click',function(ev){
li = document.createElement('li');
img = document.createElement('img');
li.appendChild(img);
save.appendChild(li);
img.src = ctx.canvas.toDataURL('image/png');
},false);
},false);
function format(time){
var hours = parseInt((time/60/60) % 60, 10),
mins = parseInt((time/60) % 60, 10),
secs = parseInt(time, 10) % 60,
hourss = (hours < 10 ? '0' : '') + parseInt(hours, 10) + ':',
minss = (mins < 10 ? '0' : '') + parseInt(mins, 10) + ':',
secss = (secs < 10 ? '0' : '') +(secs % 60),
timestring = (hourss !== '00:' ? hourss : '') + minss + secss;
return timestring;
};
})();
</script>
</body>
</html>
確保您有正確的視頻源。
取決於在您想要做的處理,繼承人幾個選項
預處理選項 如果預處理你的視頻,你可以用咕嚕生成與https://github.com/sjwilliams/grunt-responsive-videos不同的視頻格式/尺寸/圖片
客戶端選項 如果你想生成它的客戶端,你可以只要使用類似Popcorn.capture爲您託管自己的視頻文件,否則你會遇到同樣的原產地政策的問題。見https://github.com/rwaldron/popcorn.capture
服務器端選項 如果你想生成它的服務器端,謙遜視頻https://github.com/artclarke/humble-video是一個Java框架與視頻文件
我試圖用一些示例視頻與Popcorn.capture一起使用。但努力使用它。 –
得到popcorn.capture.js如何刪除其中的背景下,從視頻圖像產生一個SecurityError。我嘗試將此代碼添加到代碼'v.setAttribute('crossOrigin','anonymous');' –