I had a tv producer friend of mine check out my site on his cellphone, and we noticed that video on product pages is tiny....with no way to expand it to full screen. Would love to have video show the way it does on P5 and Shutterstock, where when you click the little 'box expand' symbol, it automatically turns the view sideways and makes full use of a phone's almost perfect 16:9 ratio. I'd hate to frustrate customers / lose sales if they can't view video on a cellphone. Also worth noting that current stats have mobile traffic up at 60-70% (vs. desktop) on Shopify.