I am using getusermedia to record audio in my website. I've included the javascript of getusermedia. The record function works fine on website but doesn't even popup for permission in when opened on mobile.
var constraints = {
audio: true,
video: false
}
navigator.mediaDevices.getUserMedia(constraints).then(function(stream) {
permissiongiven = 1;
});
this is the sample code which prompt me for permission but doesn't work on mobile.
How can I make it work on both device. Any help is appreciated.
Thanks.
Edit :- The code is now working fine on mobile as well. Maybe it was solved from chrome updates or security certificates of website. Thanks all for help.
Note that on mobile devices, you have to use SSL to use getUserMedia(). Check out if you're accessing your website with a http:// prefix. Try change it to https:// and it should work fine.
I found this website useful in answering this question
https://caniuse.com/#search=getusermedia
It says getUserMedia only supported from Chrome for Android version 70 (released Oct 16 2018)
Check MDN, then make sure your browser supports it. You need Chrome for Android 52+ it says. FWIW 68 works for me.
You should also feature-check and catch errors:
if (!navigator.mediaDevices) {
console.log("Sorry, getUserMedia is not supported");
return;
}
navigator.mediaDevices.getUserMedia(constraints)
.then(stream => permissiongiven = 1)
.catch(error => console.log(error));
Depending on the error you get, we might learn more.
NotFoundError means no camera or mic detected on the device.
NotAllowedError means user permission not granted, or you're in an iframe or not https.
navigator.mediaDevices.getUserMedia Browser compatibility
i had no idea that navigator.getUserMedia was deprecated (at least for Samsung, which is what i was testing on), and i found this article on web audio with a code sample that i barely modified:
function initGetUserMedia() {
navigator.mediaDevices = navigator.mediaDevices || {}
navigator.mediaDevices.getUserMedia = navigator.mediaDevices.getUserMedia || function(constraints) {
let getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
if (!getUserMedia) {
return Promise.reject(new Error('getUserMedia not supported by this browser'));
} else {
return new Promise((resolve, reject) => {
getUserMedia.call(navigator, constraints, resolve, reject);
});
}
}
}
Try this code with ssl site:
<script>var constraints = {audio: true, video: false}
navigator.mediaDevices.getUserMedia(constraints).then(function(stream) {{permissiongiven = 1;});</script>
Related
I have a webpage served via https with the following script:
const userMediaConstraints = {
video: true,
audio: true
};
navigator.mediaDevices.getUserMedia(userMediaConstraints)
.then(stream => {
console.log("Media stream captured.")
});
When I open it in Firefox or Safari, a prompt asking for permission to use camera and microphone appears. But not in Chrome or Opera. There the access is blocked by default and I have to go to site settings and manually allow the access, which is set to Default(ask).
window.isSecureContext is true.
navigator.permissions.query({name:'camera'}) resolves to name: "video_capture", onchange: null, state: "prompt".
It looks like Chrome and Opera should show prompt, but they do not. I tested it on a different machine with different user that had no prior history with the website with the same result.
What could be wrong?
You've said you've tried Safari, which suggests to me you're on a Mac.
This issue on the Chrome issues list fits your description really well. (I got there from this on the webrtc/samples GitHub project.) It comes down to a Mac OS security setting. Quoting comment #3:
Please check in Mac system preferences > Security & Privacy > Privacy > Microphone, that Chrome is checked.
(In your case since you want video, you'd also probably have to tick the box under Security & Privacy > Privacy > Camera or similar.)
It turns out, having video with autoplay attribute in HTML or similar lines on page load in Javascript prevent Chrome from showing the prompt.
HTML that causes this problem:
<video autoplay="true"></video>
Javascript that causes this problem:
localVideo = document.createElement('video');
videoContainer.append(localVideo);
localVideo.setAttribute('id','localVideo');
localVideo.play();
My guess is that the issue has to do with Chrome autoplay policy. Perhaps, Chrome treats my website as providing bad user experience and blocks the prompt?
I removed <video> from HTML and altered Javascript to create a relevant DOM on getUserMedia:
let localStream = new MediaStream();
let localAudioTrack;
let localVideoTrack;
let localVideo;
const userMediaConstraints = {
video: true,
audio: true
};
navigator.mediaDevices.getUserMedia(userMediaConstraints)
.then(stream => {
localAudioTrack = stream.getAudioTracks()[0];
localAudioTrack.enabled = true;
localStream.addTrack(localAudioTrack);
localVideoTrack = stream.getVideoTracks()[0];
localVideoTrack.enabled = true;
localStream.addTrack(localVideoTrack);
localVideo = document.createElement('video');
videoContainer.append(localVideo);
localVideo.setAttribute('id','localVideo');
localVideo.srcObject = localStream;
localVideo.muted = true;
localVideo.play();
});
And now I get the prompt.
I want to get a video from the webcam using JS but no footage.
MESSAGE:
DOMException: Could not start video source
App.js
const video = document.getElementById("video");
function startVideo() {
navigator.getUserMedia(
{
video: {}
},
stream => (video.srcObject = stream),
err => console.log(err)
);
}
startVideo();
index.html
...
<body>
<video id="video" width="720" height="540" autoplay muted></video>
</body>
...
thanks for your help
If anyone else is having this problem and nothing else helps. Make sure that your camera is not already claimed/used by a different software/browser.
TLDR: I have tested your code and had to change it a bit:
https://codepen.io/puradawid/pen/PoqxzPQ
It looks like the problem lays here:
navigator.getUserMedia({
video: {}
},
stream => { video.srcObject = stream },
err => console.log(err)
);
Regarding to docs navigator.getUserMedia is deprecated and there is navigator.mediaDevices.getUserMedia that supports it. However, changing that up doesn't solve the correct problem which is your callback functions. This method returns Promise that is controlled by .then(), so changing it allows me to see my face in codepen:
navigator.mediaDevices.getUserMedia({
video: true
}).then(
stream => (video.srcObject = stream),
err => console.log(err)
);
I ran into this problem on certain android devices (Sony XA2) when trying to toggle the camera on a mobile browser because I am calling navigator.mediaDevices.getUserMedia repeatedly on each camera toggle.
The solution that I found was to make sure to stop all the tracks in previous streams that you created.
this.stream.getTracks().forEach(t => {
t.stop();
this.stream.removeTrack(t);
});
Without the previous code you can't seem to toggle camera on certain Android devices: (Demo),
(Code)
The error shown was DOMException: Requested device not found
By stopping previous tracks: you are able to start a new stream:
(Demo)
Code
Note: The following code snippet doesn't seem to execute in stack overflow due to security restrictions, so please use the jsfiddle links.
class Camera {
constructor({ video }) {
this.facingMode = "environment";
this.video = video;
video.onloadedmetadata = () => {
video.play();
};
}
async toggleCamera() {
if (this.facingMode === "environment") {
this.facingMode = "user";
} else {
this.facingMode = "environment";
}
try {
if (this.stream){
/* On some android devices, it is necessary to stop the previous track*/
this.stream.getTracks().forEach(t => t.stop());
}
this.stream = await navigator.mediaDevices.getUserMedia({
video: {
facingMode: this.facingMode,
}
});
} catch (e) {
console.error(e);
}
this.video.srcObject = this.stream;
}
}
const camera = new Camera({
video: document.querySelector("video"),
});
const button = document.querySelector("button");
button.addEventListener('click', () => {
camera.toggleCamera();
});
<button>
Toggle Camera
</button>
<video></video>
In Windows 10 go to settings->privacy->App permission(left side)->Microphone-> enable 'Allow apps to access your microphone'
After that retry with your JS program....It will work!!
If anyone have such an error and you are working on a laptop. You can try bending your laptop monitor in both directions. Sometimes the cable comes loose. This helped in my case.
Also look into Feature-Policy HTTP header, both on the website and on the host web server config, and make sure camera access is allowed.
I have tried all the other solution but nothing is work. Then finally i need to uninstall my camera driver in Device Manager and then scan for hardware changes. Try to run the app again and it's working.
I'm building electron desktop app in windows 10.
electron: 15.3.0
Source video that helped me: https://www.youtube.com/watch?v=XE2ULFlzkxw
I went to the browser settings for camera and noticed that the default camera was showing as "Leap Motion" which is not a standard camera device. I changed to an actual webcam and the problem was solved.
Sometimes this type of error also appears when you try to make a peer-to-peer call system and your tests are done on the same device. The camera is already used by the initiator and the receiver can no longer activate the camera.
I'm attempting to access the microphone on iOS Safari with the help of the getUserMedia. Below you can find a snippet of my code.
if (navigator.mediaDevices === undefined) {
navigator.mediaDevices = {};
}
if (navigator.mediaDevices.getUserMedia === undefined) {
navigator.mediaDevices.getUserMedia = function(constraints) {
// First get ahold of the legacy getUserMedia, if present
let getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
// Some browsers just don't implement it - return a rejected promise with an error
// to keep a consistent interface
if (!getUserMedia) {
return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
}
// Otherwise, wrap the call to the old navigator.getUserMedia with a Promise
return new Promise(function(resolve, reject) {
getUserMedia.call(navigator, constraints, resolve, reject);
});
}
}
navigator.mediaDevices.getUserMedia({
audio: true
}).then(function(stream) {
successCallBack(.......);
}).catch(function(error) {
debug.log(error);
..........
});
Yet the promise always catches an error, to be more specific an OverConstraintError.
{message: "Invalid constraint", constraint: ""}
This behaviour is unique for iOS Safari, on all other browsers (Chrome, Firefox, Safari osX) it works without any problem. Actually my issue ressembles a lot like this one => How to resolve iOS 11 Safari getUserMedia "Invalid constraint" issue, yet I'm not trying to use the camera. The only thing that interests me is the microphone.
I'm testing with a real iPhone (a 5 and X, both updated to the latest version), so it is not linked to the iPhone Simulator.
The access to the microphone is granted and the popup requesting permissions is also showing, so it is not an permissions issue.
This issue may be related to this bug report titled getUserMedia fails with an OverConstrainedError when no devices are found:
https://bugs.webkit.org/show_bug.cgi?id=177126
Here is your code running in Codepen. As you stated, audio is enabled and works. Note the enumerateDevices() call returns an empty array. As the bug states, this causes the error in your question:
.catch(function(error) {
navigator.mediaDevices.enumerateDevices().then(devices=>{console.log(devices)});
console.log('error: ',error);
});
https://codepen.io/anon/pen/rQWRyZ?editors=0011
web rtc or getusermedia has some issues and it is not working on all platforms as u expect - have same problems with camera detection like in samsung s5 same code is working fine but under newer device it was failing.
My advice is to use webrtc adapter js.
Try simply include this script:
<script src="https://cdnjs.cloudflare.com/ajax/libs/webrtc-adapter/6.4.0/adapter.js" type="text/javascript"></script>
before u use getusermedia api. I think that 99% of issues just disappear.
Trying to access IP Camera that is connected to a wifi.
I am connected to that wifi but I am getting error. If I try open using vlc I am able to connect but not getUserMedia has null.
#Component({
selector: 'app-home',
templateUrl: './home.component.html',
})
export class HomeComponent {
#ViewChild('video') video: any;
constructor() {
}
hasGetUserMedia() {
return !!(navigator.mediaDevices &&
navigator.mediaDevices.getUserMedia);
}
ngAfterViewInit() {
if (this.hasGetUserMedia()) {
// Good to go!
console.log("Gooddd................");
} else {
alert('getUserMedia() is not supported by your browser');
}
let _video = this.video.nativeElement;
if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({ video: true, audio: true })
.then(function (stream) {
_video.src = window.URL.createObjectURL(stream);
_video.play();
}).catch(function (err) {
console.log(err);
});
}
}
}
<video #video width="640" height="480" autoplay></video>
This happens when you dont have any device to capture video or capture audio
try checking if your webcam and your microphone are working fine
Try without "audio: true". Its help for my. (Microphone are not work).
And check webcam on other sites.
Maybe need check permissions for this page.
try changing this line:
_video.src = window.URL.createObjectURL(stream);
with this one:
_video.srcObject = stream;
Use this line to initialize the webcam and microphone:
navigator.mediaDevices.getUserMedia({ audio: true, video: true });
In my case i have connected external camera through USB i was able to get the devices, i was getting kind of devices as audiooutput and videoinput, and there was no audioinput(microphone device) but while i was requesting for devices i passed constraints as..
function Webcam(){
this.constraints = {
video: true,
audio: true
}
this.userMedia = null;
this.mediaDevices = navigator.mediaDevices;
this.initialize = function(){
this.userMedia = this.mediaDevices.getUserMedia(this.constraints);
}
}
let webcam = new Webcam();
webcam.initialize();
So Promise not satisified and getting error as Requested device not found.
Try attaching an earpiece or earplug with microphone to your PC. mine has no microphone that was why I got that error
This issue can also occur on some mobile devices (Sony XA2 running Android) if you had previously already created a MediaStream.
The solution that I found was to make sure to stop all the tracks of previous streams that you created.
this.stream.getTracks().forEach(t => {
t.stop();
// I don't think removeTrack is necessary, but just keeping it.
this.stream.removeTrack(t);
});
Without the previous code you can't seem to toggle camera on certain Android devices: (Demo),
(Code)
The error shown was DOMException: Requested device not found
By stopping previous tracks: you are able to start a new stream:
(Demo)
Code
Note: I also answered a related question here: https://stackoverflow.com/a/73550841/1123985
I have mic and camera but I was getting the same error. I was pretty sure that was related to laptop setting, because I tried everything. turns out my laptop was blocking access to the media. I am using linux and laptop brand name is MSI, I started to look for any sign that related to the camera setting. On F6 button, my laptop has a webcam icon. So I clicked on
fn + F6
It works now. most likely sometimes I click on fn+* keys to see any difference and I blocked the camera access.
I'm using getUserMedia() for audio recording and it works correctly but have an issue with it.
I want to display a message before starting recording that any microphone is connected with system or not.
For this I have used following code and run this into chrome but it was not working correctly.
if(navigator.getUserMedia || navigator.webkitGetUserMedia)
{
alert("Microphone is connected with your system");
} else {
alert("Microphone is not connected with your system");
}
when microphone is not connected then also above code giving message "Microphone is connected with your system".
so please suggest me a better way to detect microphone using JavaScript in any browser.
Testing for the existence of these functions does not detect the existence of hardware microphone. It only detects if browser has the API to do so.
The browsers that pass your test need not have a physical microphone plugged into microphone jack. It is simply a newer browser. The browsers that fail the test may have a microphone, but are old browsers that do not contain the API.
Also, at least the getUserMedia function is asynchronous, so any code that depends on using the audio or video must be put in a callback function, not the main script.
See https://developer.mozilla.org/en-US/docs/Web/API/Navigator.getUserMedia for an example of how to write cross-browser code for audio/video input.
Something like this:
function success(stream) {
// we have it
}
function fail(error) {
console.log(error);
if (error === 'NO_DEVICES_FOUND') {
// NO_DEVICES_FOUND (no microphone or microphone disabled)
}
}
navigator.getUserMedia({ audio: true }, success, fail);
Try this
navigator.mediaDevices.getUserMedia({ audio: true })
.then(stream => {
// Code for success
}).catch(err => {
if(err.includes("NotFoundError: Requested device not found"))
alert("Mic not detected")
else alert("Error recording audio")
})
If the mic is not detected or unplugged means the catch statement will be executed. You can show your error message here.
You can use this link
I used this method
developer.mozilla.org