I personally have been eyeing up getting extra storage for movies so this may or may not apply to your situation but from what I'm seeing, the best option is this: http://www.amazon.com/gp/product/B00INMB23Q/ref=gno_cart_title_3?ie=UTF8&psc=1&smid=A2KUZVNQ9LP7N9. You can put a standard SD card in it or any external drive. My only advice for these OTG adapters is that they are USB 2.0 and from past experience with Sandisk cheapo drives, R/WR speeds are like 11MB/s, so pretty slow transfer rates (will still work w/ 1080p but transferring files will take a while).