Webcam - Capture haute résolution vidéo/image html5 - Stack Overflow

I'm using get user media to capture image from webcam

http://www.html5rocks.com/en/tutorials/getusermedia/intro/

Best resolution that I can get is 640X480 but I have HD webcam that record video with 1280 X 720 take a picture 2592 X 1944

So how can i capture HighRes photos?

Here is one sample of code. As you can see it doesn't care about canvas size :(

<video autoplay id="vid" style="display:none;"></video>
<canvas id="canvas" width="1280" height="720" style="border:1px solid #d3d3d3;"></canvas><br>
<button onclick="snapshot()">Take Picture</button>

<script type="text/javascript">

    var video = document.querySelector("#vid");
    var canvas = document.querySelector('#canvas');
    var ctx = canvas.getContext('2d');
    var localMediaStream = null;

    var onCameraFail = function (e) {
        console.log('Camera did not work.', e);
    };

    function snapshot() {
        if (localMediaStream) {
            ctx.drawImage(video, 0, 0);
        }
    }

    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia({video:true}, function (stream) {
        video.src = window.URL.createObjectURL(stream);
        localMediaStream = stream;
    }, onCameraFail);

</script>

http://www.html5rocks.com/en/tutorials/getusermedia/intro/

=> Setting media constraints (resolution, height, width)

As far as I know WebRTC is currently limited to 640x480 no matter what camera you have. Hopefully this will change soon.

I'm using get user media to capture image from webcam

http://www.html5rocks.com/en/tutorials/getusermedia/intro/

Best resolution that I can get is 640X480 but I have HD webcam that record video with 1280 X 720 take a picture 2592 X 1944

So how can i capture HighRes photos?

Here is one sample of code. As you can see it doesn't care about canvas size :(

<video autoplay id="vid" style="display:none;"></video>
<canvas id="canvas" width="1280" height="720" style="border:1px solid #d3d3d3;"></canvas><br>
<button onclick="snapshot()">Take Picture</button>

<script type="text/javascript">

    var video = document.querySelector("#vid");
    var canvas = document.querySelector('#canvas');
    var ctx = canvas.getContext('2d');
    var localMediaStream = null;

    var onCameraFail = function (e) {
        console.log('Camera did not work.', e);
    };

    function snapshot() {
        if (localMediaStream) {
            ctx.drawImage(video, 0, 0);
        }
    }

    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia({video:true}, function (stream) {
        video.src = window.URL.createObjectURL(stream);
        localMediaStream = stream;
    }, onCameraFail);

</script>

http://www.html5rocks.com/en/tutorials/getusermedia/intro/

=> Setting media constraints (resolution, height, width)

As far as I know WebRTC is currently limited to 640x480 no matter what camera you have. Hopefully this will change soon.

Source