gistfile1.sass

  .video-wrapper {
    position: relative;
    height: 100%;
    width: 100%;
    background: #ccc;
    z-index: -1;
    overflow: hidden;
    video {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      width: 100%; 
      height: auto;
      overflow: hidden;
      z-index: 2;
      background: url('/img/feature-img.jpg');
      background-size: cover;
      background-color: rgba(255,255,255,0) !important;
      @media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dppx) { 
        background: url('/img/[email protected]');
      }
    }
    // Hide the video and show the image for smaller touch devices
    @media (max-width: $break-medium) {
      video { display: none; }
      .img { display: block; }
    }
  }