<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
#video{
/*display: none;*/
}
</style>
</head>
<body>
<div class="play">播放</div>
<div class="pause">暂停</div>
<div class="playPause">播放或暂停视频</div>
<div class="change-src">切换视频</div>
<video id="video" loop width='300' autoplay webkit-playsinline="true" src='http://www.w3school.com.cn/example/html5/mov_bbb.mp4'></video>
<script src="https://cdn.bootcss.com/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
/*
* video视频转成canvas（兼容至IE8+）
* Author: Zijor Created On: 2017-06-25
*
* 使用方法：
* var videoCanvas = new VideoToCanvas(videoDom);
*
* 对象的属性：
* 暂无。
*
* 对象的方法：
* play 播放视频
* pause 暂停视频
* playPause 播放或暂停视频
* change(src) 切换视频。参数src为切换的视频地址
*/
var VideoToCanvas = (function(window, document) {
function VideoToCanvas(videoElement) {
if(!videoElement) {return;}
var canvas = document.createElement('canvas');
canvas.width = videoElement.offsetWidth;
canvas.height = videoElement.offsetHeight;
ctx = canvas.getContext('2d');
var newVideo = videoElement.cloneNode(false);
var timer = null;
var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame || window.msRequestAnimationFrame;
var cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame;
function drawCanvas() {
ctx.drawImage(newVideo, 0, 0, canvas.width, canvas.height);
timer = requestAnimationFrame(drawCanvas);
}
function stopDrawing() {
cancelAnimationFrame(timer);
}
newVideo.addEventListener('play', function() {
drawCanvas();
},false);
newVideo.addEventListener('pause', stopDrawing, false);
newVideo.addEventListener('ended', stopDrawing, false);
videoElement.parentNode.replaceChild(canvas, video);
this.play = function() {
newVideo.play();
};
this.pause = function() {
newVideo.pause();
};
this.playPause = function() {
if(newVideo.paused) {
this.play();
} else {
this.pause();
}
};
this.change = function(src) {
if(!src) {return;}
newVideo.src = src;
};
this.drawFrame = drawCanvas;
}
return VideoToCanvas;
})(window, document);
var video = document.getElementById('video');
var videoCanvas = new VideoToCanvas(video);
$('.play').on('click',function(){
videoCanvas.play();
});
$('.pause').on('click',function(){
videoCanvas.pause();
})
$('.playPause').on('click',function(){
videoCanvas.playPause();
})
$('.change-src').on('click',function(){
videoCanvas.change('p4-video1.mp4');
})
</script>
</body>
</html>
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