The easiest way to play videos in HTML is to use YouTube. YouTube will handle video hosting, encoding, and playback across all devices. You can embed any YouTube video using an <iframe>.
<iframe> codeautoplay=1 - Auto playmute=1 - Mute audioloop=1 - Loop videocontrols=0 - Hide controlsstart=30 - Start at 30 secondsEdit the code below and click Run to see the result live.