<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>W3CSchool Demo</title> </head> <body> <video id="video1" controls="" width="270" style="margin-top:15px;"> <source src="demo/video1.mp4" type="video/mp4"> <!-- <source src="/example/html5/mov_bbb.ogg" type="video/ogg"> <source src="/example/html5/mov_bbb.webm" type="video/webm"> --> </video> <canvas id="myCanvas4" width="270" height="135" style="border:1px solid #d3d3d3; margin-top:15px;"> Your browser does not support the HTML5 canvas tag. </canvas> <script> var v=document.getElementById("video1"); var c=document.getElementById("myCanvas4"); ctx=c.getContext('2d'); v.addEventListener('play', function() {var i=window.setInterval(function() {ctx.drawImage(v,0,0,270,135)},20);},false); v.addEventListener('pause',function() {window.clearInterval(i);},false); v.addEventListener('ended',function() {clearInterval(i);},false); </script> </body> </html>
参考W3CSchool:http://www.w3school.com.cn/tags/canvas_drawimage.asp