js+html手機端視訊截圖
阿新 • • 發佈：2018-12-26
在執行這段程式碼的時候引用的視訊一定要儲存在本地，否則會報canvas.toDataURL()錯
<html> <meta http-equiv="X-UA-Compatible" content="chrome=1"> <head> <script src="js/jquery-1.9.1.js"></script> <script src="js/canvas.js"></script> <script> (function() { "use strict"; var video, $output; var scale = 0.25; var initialize = function() { $output = $("#output"); video = $("#video").get(0); $("#capture").click(captureImage); }; var captureImage = function() { varcanvas = document.createElement("canvas"); canvas.width = video.videoWidth * scale; canvas.height = video.videoHeight * scale; canvas.getContext('2d') .drawImage(video, 0, 0, canvas.width, canvas.height); var img = document.createElement("img"); img.src = canvas.toDataURL(); $output.prepend(img); }; $(initialize); }()); </script> </head> <body bgcolor="#E6E6FA"> <video id="video" controls="controls"> <source src="IMG_4438.mp4" /> </video> <button id="capture">Capture</button> <div id="output"></div> </body> </html>