Instead of setting the video on the page to auto-play they simply created an animated .gif image of a few seconds of the video playing, it looks like a real video playing (no audio), only it's a .gif image set to play on an endless loop.
The .gif image has a text overlay "Watch Now" between the fake Play button & fake Volume button at the bottom of the video. Looks kinda like a Youtube Video.
Clever idea to speed up the landing page loading time & draw the traffic into clicking the .gif image to watch their presentation video. The .gif image of the fake video is the only thing on the page that is moving, so it instantly grabs your attention when the page loads (awesome call to action).