本文實例講述了js+HTML5實現視頻截圖的方法。分享給大家供大家參考。具體如下：
1. HTML部分：
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1 2 3 4 5 <video id="video" controls="controls"> <source src=".mp4" /> </video> <button id="capture">Capture</button> <div id="output"></div>2. 點擊按鈕時觸發如下代碼：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 (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() { var canvas = 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); }());希望本文所述對大家的javascript程序設計有所幫助。