Video [Q] Play a video in a webpage ??

Hi, I have a webpage with an embedded video and I need to play automatically when page loads. I need it for a digital signage solution. But a I don't get it work. I tried different browsers (Chrome, Firefox, FlashFox). I tried different video types (mp4, mov, flv). Nothing works. The device where it must be run the webpage is MINIX NEO G4, with Android 4.1.1. Please, how can I do this?