<div class="row">
  <div class="col-lg-9 col-md-12">
    <div class="row">
      <div class="col-lg-6 col-md-6">
        <div class="mycontent embed-responsive embed-responsive-16by9">
          <video class="embed-responsive-item" src="videos/collage_video.mp4" width="640" height="480" controls style="margin-top: 10px;"></video>
        </div>
      </div>
      <div class="col-lg-6 col-md-6">
        <div class="mycontent embed-responsive embed-responsive-16by9">
          <video class="embed-responsive-item" src="videos/topper_video.mp4" width="640" height="480" controls style="margin-top: 10px;"></video>
        </div>
      </div>
    </div>
  </div>
</div>
