javascriptvideovideo-streaming

I feed the mediaSource sourceBuffer with Uint8Arrays no errors but the video do not play. Why?

I have this web page (see code), the script runs without errors and the chunks are showed in the console as Uint8Arrays but the video do not show-up. On the server side the 13 .mp4 videos are present.

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Video</title>
        <!--<link rel="stylesheet" href="styles.css">-->
    </head>
    <body>
        <div class="content">
            <h1>My Video</h1>
            <video id="video" width="640" height="480" type="video/mp4" autoplay muted decoration></video>
      <script>
        'use strict';

        var video = document.querySelector('video');
        var i = 0;
        var url = "0.mp4";

        if (!window.MediaSource) {
            alert('The MediaSource API is not available on this platform');
        }

        var mediaSource = new MediaSource();
        var sourceBuffer;

        video.src = window.URL.createObjectURL(mediaSource);

        mediaSource.addEventListener('sourceopen', function() {
          sourceBuffer = mediaSource.addSourceBuffer('video/mp4'); // ; codecs="h264"
          get(url, MyCallback);
        });

        function MyCallback(chunk)
        {
          console.log(chunk);
          sourceBuffer.appendBuffer(chunk);
          if (video.paused) {
            video.play(); // Start playing after 1st chunk is appended.
          }
          i++;
          if(i===14)
            i = 0;
            url = i.toString()+".mp4";
            get(url, MyCallback);
          }

          function get(url, callback) {
            var xhr = new XMLHttpRequest();
            xhr.open('GET', url, true);
            xhr.responseType = 'arraybuffer';
            xhr.send();

            xhr.onload = function() {
            if (xhr.status !== 200) {
              alert('Unexpected status code ' + xhr.status + ' for ' + url);
              return false;
            }
            callback(new Uint8Array(xhr.response));
          };
        }

      </script>
    </div>
  </body>
</html>

I did try to set the video scr= one of those mp4 and it was playing correctly, just to say the mp4 format seems good for firefox.

Solution

  • Make sure your file & code meets the following conditions: