After stop working with camera I still see permission icon for the camera in chrome browser. I cannot reload page after turn of the camera and I should stay on this page.
var _video = document.getElementById('video');
var _mediaStream = null;
navigator.mediaDevices
.getUserMedia({audio: false, video: true}).then(function (stream) {
_mediaStream = stream;
_video.src = window.URL.createObjectURL(stream);
_video.play();
});
document.getElementById('stopCamera').addEventListener('click', function () {
_video.pause();
_video.src = '';
_mediaStream.getVideoTracks().forEach(function (track) {
track.stop();
});
_mediaStream.getAudioTracks().forEach(function (track) {
track.stop();
});
_mediaStream = null;
_video.parentNode.removeChild(_video);
});
<button id="stopCamera">Stop Camera</button>
<video id="video" width="640" height="480" autoplay></video>
Related
I've already tried adding a video tag and then setting the source to the webcam, but this didn't work. It just produced 404s in the console. Here is the code I tried:
<html>
<head>
<!-- Load TensorFlow.js -->
<script src="https://cdn.jsdelivr.net/npm/#tensorflow/tfjs"></script>
<!-- Load Posenet -->
<script src="https://cdn.jsdelivr.net/npm/#tensorflow-models/posenet"></script>
</head>
<body>
<video autoplay="true" id="videoElement">
</video>
</body>
<script>
var video = document.querySelector("#videoElement");
if (navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({ video: true })
.then(function (stream) {
video.srcObject = stream;
})
}
var flipHorizontal = false;
var imageElement = document.getElementById('videoElement');
posenet.load().then(function(net) {
const pose = net.estimateSinglePose(imageElement, {
flipHorizontal: true
});
return pose;
}).then(function(pose){
var parts = pose["keypoints"];
console.log(parts[9]);
})
</script>
</html>
Please see our official example code here for using webcam with bodypix (which is very similar to posenet but gives you even more details). The webcam part of the code however would be the same:
CodePen:
https://codepen.io/jasonmayes/pen/QWbNeJd
Or Glitch: https://glitch.com/edit/#!/tensorflow-js-body-segmentation
Essentially the key parts here are:
const video = document.getElementById('webcam');
// Check if webcam access is supported.
function hasGetUserMedia() {
return !!(navigator.mediaDevices &&
navigator.mediaDevices.getUserMedia);
}
// Enable the live webcam view and start classification.
function enableCam(event) {
// getUsermedia parameters.
const constraints = {
video: true
};
// Activate the webcam stream.
navigator.mediaDevices.getUserMedia(constraints).then(function(stream) {
video.addEventListener('loadedmetadata', function() {
// do something once loaded metadata
});
video.srcObject = stream;
video.addEventListener('loadeddata', function(){
// Do something once loaded.
});
});
}
// If webcam supported, add event listener to button for when user
// wants to activate it.
if (hasGetUserMedia()) {
const enableWebcamButton = document.getElementById('webcamButton');
enableWebcamButton.addEventListener('click', enableCam);
} else {
console.warn('getUserMedia() is not supported by your browser');
}
I am trying to write a small application that can record video in the browser and upload it to a server.
I have got the code below:
<html>
<body>
<video id="video" playsinline autoplay></video>
<script>
function hasGetUserMedia() {
return !!(navigator.mediaDevices &&
navigator.mediaDevices.getUserMedia);
}
if (hasGetUserMedia()) {
console.log("Good to go");
} else {
console.log('Not supported');
}
const constraints = {
video: true,
audio: true,
};
function start(){
navigator.mediaDevices.getUserMedia(constraints).
then((stream) => {video.srcObject = stream});
var videoEl = document.getElementById('video');
stream = videoEl.srcObject;
}
function stop(){
var videoEl = document.getElementById('video');
stream = videoEl.srcObject;
tracks = stream.getTracks();
tracks.forEach(function(track) {
track.stop();
});
downloadLink.href = URL.createObjectURL(new Blob(tracks[0]));
downloadLink.download = 'acetest.webm';
}
</script>
<button onclick="start()">Start</button>
<button onclick="stop()">Stop</button>
</body>
I can see the video on the screen, but unsure how I can then capture that to a file to upload.
I have tried using URL.createObjectURL(new Blob(tracks[0])); but this doesn't work. How can I save the video once the Stop button is pressed?
my problem is, I have script, that take video from camera. On my iPhone, there is problem, I can't use BLOB as URL for <video></video>, so I used FileReader, that makes base64 from BLOB. But I found another problem. When I take video in portrait mode, the captured video is in landscape mode, is so much wide. I need rotate that video to portrait mode. I don't know, if I have mistake in Blob or FileReader code. Can you help me please? Thanks.
This is my HTML Code:
<video autoplay="true" id="cameraVideo" playsinline webkit-playsinline>
This is my Javascript Code:
var video = document.querySelector("#cameraVideo");
var mode = "rear";
var mediaRecorder;
var chunks = [];
if (navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({video: { facingMode: "environment" } }).then(function (stream) {
video.srcObject = stream;
mediaRecorder = new MediaRecorder(stream);
}).catch(function (err0r) {
alert("Something went wrong!");
});
}
$(".camera").find(".take").on("touchstart mousedown", function() {
mediaRecorder.start();
mediaRecorder.ondataavailable = function(ev) {
chunks.push(ev.data);
}
});
$(".camera").find(".take").on("touchend mouseup", function() {
mediaRecorder.stop();
mediaRecorder.onstop = (ev)=>{
var blob = new Blob(chunks, { 'type' : 'video/mp4' });
chunks = [];
var videoURL = webkitURL.createObjectURL(blob);
if(video.srcObject) video.srcObject.getTracks().forEach(t => t.stop());
var reader = new FileReader();
reader.readAsDataURL(blob);
reader.onloadend = function() {
document.getElementById("savevideo").src = reader.result;
document.getElementById("savevideo").play();
}
}
});
Pictures:
When video is recording :
When video is recorded :
I am making mobile app which will show live image of back camera on canvas. I already tried too many cordova plugin but in all of that system app get opened to take picture or video.
Is there any plugin or coding way so I can see live on canvas from back or front camera.
Thanks.
HTML code
<video id="video" width="640" height="480" autoplay></video>
<button id="snap">Snap Photo</button>
<canvas id="canvas" width="640" height="480"></canvas>
JS code
// Put event listeners into place
window.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 place
if (navigator.getUserMedia) { // Standard
navigator.getUserMedia(videoObj, function (stream) {
video.src = stream;
video.play();
}, errBack);
} else if (navigator.webkitGetUserMedia) { // WebKit-prefixed
navigator.webkitGetUserMedia(videoObj, function (stream) {
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errBack);
}
else if (navigator.mozGetUserMedia) { // Firefox-prefixed
navigator.mozGetUserMedia(videoObj, function (stream) {
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
}
}, false);
document.getElementById("snap")
.addEventListener("click", function() {
setInterval(function(){
context.drawImage(video, 0, 0, 640, 480);
},1);
});
notice that a browser supporting the api getUserMedia does not mean it can call all cameras on your phone,it is only able to call the front camera probably.
I created a simple HTML form and inside of it user should be able to take picture of himself using his device web cam. I used this piece of HTML in my form:
<div class="form-group">
<div id="camera">
<div class="center clear">
<video id="video" class="picCapture" autoplay=""></video>
<button id="snap" type="button" class="btn btn-default" onclick="return false;">Take Picture</button>
<canvas id="canvas" class="picCapture"></canvas>
</div>
</div>
</div>
and this JS (catch-pic.js) :
// Put event listeners into place
window.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 place
if(navigator.getUserMedia) { // Standard
navigator.getUserMedia(videoObj, function(stream) {
video.src = stream;
video.play();
}, errBack);
} else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
---28--- navigator.webkitGetUserMedia(videoObj, function(stream){
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
} else if(navigator.mozGetUserMedia) { // WebKit-prefixed
navigator.mozGetUserMedia(videoObj, function(stream){
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
}
In my local machine every thing worked. i could see the output of the webcam in my form, and was able to save pictures. but now i uploaded the app to the server and i cant get the stream from the webcam to show up.
I checked in the console and i get this two printed out:
getUserMedia() is deprecated on insecure origins, and support will be removed in the future. You should consider switching your application to a secure origin, such as HTTPS. See https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-powerful-features-on-insecure-origins for more details.
catch-pic.js:28 Video capture error: undefined
i marked line 28 in catch-pic.js. I couldn't really understand how come this one is working only in my machine and not in others...any idea? thx
i find same this your code:
<script>
// Put event listeners into place
window.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 place
if(navigator.getUserMedia) { // Standard
navigator.getUserMedia(videoObj, function(stream) {
video.src = stream;
video.play();
}, errBack);
} else if(navigator.webkitGetUserMedia) { // WebKit-prefixed
navigator.webkitGetUserMedia(videoObj, function(stream){
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errBack);
} else if(navigator.mozGetUserMedia) { // WebKit-prefixed
navigator.mozGetUserMedia(videoObj, function(stream){
video.src = window.URL.createObjectURL(stream);
video.play();
}, errBack);
}
// Trigger photo take
document.getElementById("snap").addEventListener("click", function() {
context.drawImage(video, 0, 0, 640, 480);
});
}, false);
</script>
and running this link