I'm just starting out with Web Designer, and I'm sure I'm missing something basic, but I tried inserting a video and I'm only getting the first image when I preview it. The video is 7s long, is an Mp4, and is sourced through my local drive. I got it to work once, and now I'm just getting this placeholder image that's the first frame of the clip. I've tried changing the settings (autoplay, loop, etc...). I've tried in multiple browsers (all to the same effect unfortunately). I've checked and triple-checked that the source is accurate. What am I missing?? Sorry if this is a newbie question.
https://drive.google.com/folderview?id=0B6N8icdT0F3jeG9xNXpHV0x6RzA&usp=sharing