canvas 在視頻中的用法
阿新 • • 發佈：2017-06-23
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<!doctype html> <html> <head> <meta charset="UTF-8"> <title>model</title> <meta name="format-detection" content="telephone=no" /> <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"> <meta name="apple-mobile-web-app-capable" content="yes" /> <style> *{margin:0;} </style> </head> <body> <div> <canvas id="mycanvas" width="640" height="1039"></canvas> </div> <video class="" id="video" width="640" autoplay style=" display:none;"> <source src="images/video.mp4" type=‘video/mp4‘> </video> <script type="text/javascript" src="js/setviewport.js"></script> <script type="text/javascript" src="js/jquery.js"></script> <script> function playVideo() {var myvideo=document.getElementById("video"); var c=document.getElementById(‘mycanvas‘); var ctx=c.getContext("2d"); ctx.clearRect(0,0,640,1039); ctx.drawImage(myvideo,0,0,640,1039); stopCanvas = setInterval(function () { ctx.clearRect(0,0,640,1039); ctx.drawImage(myvideo,0,0,640,1039); },30) } playVideo(); </script> </body> </html>
canvas 在視頻中的用法