To add your video on page, insert your files in video directory and change and set src to it.
<video preload="auto" loop class="video-block js-page-video" poster="images/video-preview.jpg"> <source src="video/MOTO-HD.mp4" type="video/mp4"> <source src="video/MOTO-HD.webm" type="video/webm"> <source src="video/MOTO-HD.ogv" type="video/ogg"> </video>
In poster attribute set path to image that will be visible on devices that doesn't support video tag.