HTML5调用本地摄像头

来源：互联网发布：淘宝网上手机编辑：程序博客网时间：2024/04/30 18:59

html代码:

<video id="video" width="640" height="480" autoplay></video><br/><button id="snap" style="float:right;"><h1>Snap Photo</h1></button>

javascript代码:

<script type="text/javascript">// Put event listeners into placewindow.addEventListener("DOMContentLoaded", function() {// Grab elements, create settings, etc.var canvas = document.getElementById("canvas"),context = canvas.getContext("2d"),video = document.getElementById("video"),videoObj = { "video": true },errBack = function(error) {console.log("Video capture error: ", error.code); };// Put video listeners into placeif(navigator.getUserMedia) { // Standardnavigator.getUserMedia(videoObj, function(stream) {video.src = stream;video.play();}, errBack);} else if(navigator.webkitGetUserMedia) { // WebKit-prefixednavigator.webkitGetUserMedia(videoObj, function(stream){video.src = window.webkitURL.createObjectURL(stream);video.play();}, errBack);}else if(navigator.mozGetUserMedia) { // Firefox-prefixednavigator.mozGetUserMedia(videoObj, function(stream){video.src = window.URL.createObjectURL(stream);video.play();}, errBack);}}, false);// 触发拍照动作document.getElementById("snap").addEventListener("click", function() {context.drawImage(video, 0, 0, 640, 480);});</script>

下面是测试结果:

chrome firefoxcomputer
调用成功
调用成功 android phone调用前置摄像头
前置后置都可调用

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