Is it possible to stream a video signal locally to a browser?

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You can display the open TV signal using a capture card and display within a web browser using HTML5 or Javascript?

Whereas I use Ubuntu.

html5 browser

  • In the case of smart TV is possible using this call, they can say?

2 answers

4

Depends on the driver of the video card, it can. Many drivers can work in an identical way to a webcam, so both Flash and HTML5 have access.

Example of HTML5 video:

<video autoplay id="vid" style="display:none;"></video>
<canvas id="canvas" width="640" height="480" style="border:1px solid #d3d3d3;"></canvas><br>
<button onclick="snapshot()">Salvar um quadro</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('A camera nao funcionou.', 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>

Check that the "media.navigator.enabled" option is on "about:config", on Chrome.

Example source: http://www.scottpreston.com/articles/1442.php

  • Know some capture card that the driver does the same as the webcam driver ?

  • I don’t know what’s on the market today, but a lot of them do. If not, there are some programs like Manycam and similar that redirect the most diverse video entries (including AVI) to a kind of virtual webcam.

  • I’m using an Avertv .. installed here on the pc only that only works with the software of this card.

2

Another option is to use software such as:

Windows Media Encoder takes the video from your card and turn it into streaming. So you can call any player in both Html5 and old html video.

But it consumes a lot of band, I with the NET 20MB I get about 4~6 people watching the 640x420 with reasonable quality, I think it was about 480kbps

Browser other questions tagged html5 browser

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