title: Video I frame not working properly on mobile browser
body: <p>I am just working on recording the video at user's end device. I am having problem with video screen size at mobile device. I have a website which is suppose to run on both browser on desktop and on mobile devices. Here is the image of how it is working on desktop browser, <a href="https://drive.google.com/file/d/1y4ey4buJo2ZWTXZtdzMLn8WJVOB42POI/view?usp=sharing" rel="nofollow noreferrer">link</a>. Everything works fine but now when I run it on mobile devices the screen comes like this, <a href="https://drive.google.com/file/d/1N1pfFpBBsTUPt74sHTT_R55uhmhwWiLl/view?usp=sharing" rel="nofollow noreferrer">link</a>. So seems to me only half of screen is coming. I tried to adjust the width and height of video frame but not worked. Here are the HTML and CSS code for the implementation of above.</p>
  
  <p><strong>HTML Code</strong></p>
  
  <pre><code>&lt;div class="video-box"&gt;
      &lt;img class="image-block__image image-block__image_camera" id='image' src="./images/box.png" alt="Place your face inside the square"&gt;
             &lt;div id="video-box-video" class=""&gt;
                   &lt;video id="myVideo" muted autoplay loop class="camera"&gt;&lt;/video&gt;
                   &lt;canvas id="faceCanvas" class=""&gt;&lt;/canvas&gt;
             &lt;/div&gt;    
  &lt;/div&gt;
  </code></pre>
  
  <p><strong>CSS Code</strong></p>
  
  <pre><code>video {
      -moz-transform: scale(-1, 1);
      -webkit-transform: scale(-1, 1);
      -o-transform: scale(-1, 1);
      transform: scale(-1, 1);
      filter: FlipH;
  }
  
  .video-box {
      /*position: absolute;*/
      min-height: 210px;
      width: auto;
      top: 0px;
      /*height: 100%;*/
      /*width: 100%;*/
      left: 0;
      /*border: thin solid yellow;*/
  }
  
  #video-box-video {
      position: absolute;
      min-height: 210px;
      top: 0px;
      height: 100%;
      width: 100%;
      left: 0;
  }
  
  #video-box-video #faceCanvas {
      /*position: absolute;*/
      top: 0px;
      height: 100%;
      width: 100%;
      left: 0;
      form: scale(-1, 1);
      -webkit-transform: scale(-1, 1);
      -o-transform: scale(-1, 1);
      transform: scale(-1, 1);
      filter: FlipH;
  }
  #myVideo{
      /*width: 100%;*/
      /*height: 100%;*/
      position: absolute;
      top: 0px;
      left: 0;
  }
  </code></pre>
  
  <p><strong>In JavaScript</strong></p>
  
  <p>I am using window.MediaRecorder for recording the video.</p>