canvas写入视频 video

canvas写入video元素
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        video {
            width: 0;
            height: 0;
            opacity: 0;
            display: none;
        }
        canvas {
            width: 375px;
            height: 667px;
        }
    </style>
</head>
<body>
<video id="video1" autoplay data-response data-type="contain" width="100%" height="100%" x-webkit-airplay="true" webkit-playsinline="" playsinline="true" preload="true" playsinline="true" x-webkit-airplay="allow" x5-video-player-type="h5" x5-video-player-fullscreen="true" x5-video-orientation="portraint"  src="https://mat1.gtimg.com/zj/forguo/zwzt/quzhou_politeness/video/video1.mp4"></video>
<canvas id="canvas" width="750" height="1060"></canvas>

<button id="play">播放</button>
</body>

<script>
    var FixAndroidVideo = function(videoSrc, canvasSrc, videoW, videoH) {
        var TestVideo = document.getElementById(videoSrc);
        //获取canvas画布

        var TestCanvas = document.getElementById(canvasSrc);
        //设置画布
        var TestCanvas2D = TestCanvas.getContext('2d');
        //设置setinterval定时器
        var TestVideoTimer = null;
        //监听播放
        TestVideo.addEventListener('play', function() {
            TestVideoTimer = setInterval(function() {
                TestCanvas2D.drawImage(TestVideo, 0, 0, videoW, videoH);
            }, 20);
        }, false);
        //监听暂停
        TestVideo.addEventListener('pause', function() {
            clearInterval(TestVideoTimer);
        }, false);
    };
    FixAndroidVideo('video1', 'canvas', 750, 1060);

    // document.getElementById('play').addEventListener('click', function () {
    //     document.getElementById('video1').play();
    // })
</script>
</html>
canvas写入视频 video

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