javacript实现调用webcamera示例
2018-04-25 本文已影响16965人
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<!DOCTYPE html>
<html lang="ZH-CN">
<head>
<meta charset="utf-8">
<title>web RTC 测试</title>
<style>
.booth {
width:600px;
background:#ccc;
border: 20px solid #ddd;
margin: 0 auto;
}
</style>
</head>
<body>
<div class="booth">
<video id="video" width="600" height="400"></video>
<button id='tack'>截图</button>
<canvas id='canvas' width='600' height='400'></canvas>
<img id='img' src=''>
</div>
<script>
var video = document.getElementById('video'),
canvas = document.getElementById('canvas'),
snap = document.getElementById('tack'),
img = document.getElementById('img'),
vendorUrl = window.URL || window.webkitURL;
//媒体对象
navigator.getMedia = navigator.getUserMedia ||
navagator.webkitGetUserMedia ||
navigator.mozGetUserMedia ||
navigator.msGetUserMedia;
navigator.getMedia({
video: true, //使用摄像头对象
audio: false //不适用音频
}, function(strem){
console.log(strem);
video.src = vendorUrl.createObjectURL(strem);
video.play();
}, function(error) {
//error.code
console.log(error);
});
snap.addEventListener('click', function(){
//绘制canvas图形
canvas.getContext('2d').drawImage(video, 0, 0, 600, 400);
//把canvas图像转为img图片
img.src = canvas.toDataURL("image/png");
})
</script>
</body>
</html>
timg (6).jpg
