How Can I Get A List Of Video Cameras Attached In My Computer Using JavaScript?
Solution 1:
Only works in chrome and edge
<script>
navigator.mediaDevices.enumerateDevices().then(function (devices) {
for(var i = 0; i < devices.length; i ++){
var device = devices[i];
if (device.kind === 'videoinput') {
var option = document.createElement('option');
option.value = device.deviceId;
option.text = device.label || 'camera ' + (i + 1);
document.querySelector('select#videoSource').appendChild(option);
}
};
});
</script>
<select id="videoSource"></select>
Solution 2:
Perhaps Navigator.getUserMedia() (uses WebRTC under the hood) is what you're looking for, though I don't see anything that will directly tell you what devices are available (the list of devices isn't exposed to your code—it's presented to the user when asking for permission to access available hardware).
Also note the browser support: Chrome 21+, Firefox 20+, Opera 12+, no support for IE and possibly Safari.
Solution 3:
try out this...
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="author" content="Victor Stan">
<meta name="description" content="Get multiple video streams on one page. Adapted from code by Muaz Khan">
<title>Video Camera</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js" ></script>
<style type="text/css" media="screen">
video {
border:1px solid gray;
}
</style>
</head>
<body>
<script>
if (!MediaStreamTrack) document.body.innerHTML = '<h1>Incompatible Browser Detected. Try <strong style="color:red;">Chrome Canary</strong> instead.</h1>';
var videoSources = [];
MediaStreamTrack.getSources(function(media_sources) {
console.log(media_sources);
alert('media_sources : '+media_sources);
media_sources.forEach(function(media_source){
if (media_source.kind === 'video') {
videoSources.push(media_source);
}
});
getMediaSource(videoSources);
});
var get_and_show_media = function(id) {
var constraints = {};
constraints.video = {
optional: [{ sourceId: id}]
};
navigator.webkitGetUserMedia(constraints, function(stream) {
console.log('webkitGetUserMedia');
console.log(constraints);
console.log(stream);
var mediaElement = document.createElement('video');
mediaElement.src = window.URL.createObjectURL(stream);
document.body.appendChild(mediaElement);
mediaElement.controls = true;
mediaElement.play();
}, function (e)
{
alert('Hii');
document.body.appendChild(document.createElement('hr'));
var strong = document.createElement('strong');
strong.innerHTML = JSON.stringify(e);
alert('strong.innerHTML : '+strong.innerHTML);
document.body.appendChild(strong);
});
};
var getMediaSource = function(media) {
console.log(media);
media.forEach(function(media_source) {
if (!media_source) return;
if (media_source.kind === 'video')
{
// add buttons for each media item
var button = $('<input/>', {id: media_source.id, value:media_source.id, type:'submit'});
$("body").append(button);
// show video on click
$(document).on("click", "#"+media_source.id, function(e){
console.log(e);
console.log(media_source.id);
get_and_show_media(media_source.id);
});
}
});
}
</script>
</body>
</html>
Solution 4:
JavaScript cannot access your cameras to return a list. You will need to use a Flash SWF to get the camera information and pass it back to your page's JavaScript.
EDIT: to those who downvoted. These methods will not give him a dropdown list of available cameras. If it does, please post a link or code. At the current date, the only way to get a list of cameras (which is what his questions was) is to use Flash (or possibly silverlight, but Flash has much broader install coverage). I've edited my question to be a little more specific in terms of getting the list versus accessing a camera.
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