Slider Revolution video doesn't play on iphone

I linked to an MP4 video on my website at http://danarayshairstudio.com/hairwash.mp4 and it doesn’t play on my iphone. Is there a setting I’m overlooking? It plays correctly on the full website at http://www.danarayshairstudio.com/ (it’s the fifth item in the home page slider). I’m using wordpress and i purchased the Highend Theme.