How to use my own videos?

You can make your videos to load in the slider, if you use a html item, and the html video tag to put it there. To keep it responsive, you need to use some html/css trick, which will make it have 100% width and auto height, so this is the html code you should use:

<div class="myvid_container">
    <canvas class="resp_canvas" width="400" height="300"></canvas>
    <video class="resp_video" width="400" height="300" controls>
          <source src="http://www.w3schools.com/html/movie.mp4"  type="video/mp4">
	Your browser does not support the video tag.
    </video>
</div>

And this should be the css code:

.myvid_container {
    position: relative;
}
.resp_video, .resp_canvas {
    top: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    height: auto;
}
.resp_video {
    height: 100%;
    position: absolute;
}

html_video