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#js实现视频截图

原文：https://blog.csdn.net/zhanglir333/article/details/79178979

js实现视频截图

<!doctype html>
<html lang="zh-CN">
    <head>
        <title>测试页</title>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no,maximum-scale=1,minimum-scale=1">
    </head>
    <body>
        <video id="video" controls="controls">
            <source src="movie.ogg"></source>
            <source src="movie.mp4"></source>
            您的浏览器不支持html5
        </video>
        <button id="capture">截屏</button>
        <div id="output"></div>
        <script src="https://cdn.bootcss.com/jquery/1.12.3/jquery.js"></script>
        <script>
        $(function(){
            var video, $output;
            var scale = 0.25;
            var initialize = (function() {
                $output = $('#output');
                video = $('#video').get(0);
                $('#capture').on('click', function(){
                    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 image = document.createElement('img');
                image.src = canvas.toDataURL();
                $output.prepend(image);
            }
        })
        </script>
    </body>
</html>
posted @ 2021-12-14 16:26  biuo  阅读(326)  评论(0)  编辑  收藏  举报