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canvas实现视频截图

2024-09-28 15:51:02   215人阅读

截取视频当前播放画面，直接上源码。

<body>
    <div class="container">
        <video id="test" width="500" height="400" >
            <source src="http://www.mamicode.com/test.mp4" type="video/mp4">
        </video>
    </div>
    <canvas height="400" width="500" id="canvas2" style="border:1px solid #000;margin: 50px;"></canvas>
    <canvas height="400" width="500" id="canvas1" style="border:1px solid #000;margin: 50px;display: none;"></canvas>
    <button type="button" onclick="drawImg()">click</button>
<script>
    var video = document.getElementById(‘test‘);
    var canvas1 = document.getElementById(‘canvas1‘);
    var canvas2 = document.getElementById(‘canvas2‘);
    var context1 = canvas1.getContext(‘2d‘);
    var context2 = canvas2.getContext(‘2d‘);
    function drawVideo() {
        context1.drawImage(video,0,0,video.width,video.height);
    }
    function drawImg() {
        context2.drawImage(canvas1,0,0,canvas1.width,canvas1.height)
    }
    video.play();
    setInterval(drawVideo,100);
</script>
</body>

canvas实现视频截图


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