html5调用摄像头

来源：互联网发布：到底谁的心,谁人知编辑：程序博客网时间：2024/04/30 18:37

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<video id="video" autoplay=""style='width:640px;height:480px'></video>
<div><button id='picture' style="width: 100%;">PICTURE</button></div>
<canvas id="canvas" width="640" height="480"></canvas>
<script type="text/javascript">
var video = document.getElementById("video");
var context = canvas.getContext("2d");
var errocb = function () {
console.log('sth wrong!');
}

if (navigator.getUserMedia) { // 标准的API
navigator.getUserMedia({ "video": true }, function (stream) {
video.src = stream;
video.play();
}, errocb);
} else if (navigator.webkitGetUserMedia) { // WebKit 核心的API
navigator.webkitGetUserMedia({ "video": true }, function (stream) {
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errocb);
}

document.getElementById("picture").addEventListener("click", function () {
context.drawImage(video, 0, 0, 640, 480);
});
</script>

</body>
</html>

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