Most huge media files are vedios in avi., wma. and mkv. formats over 1080p. You can copy/move the file with high quality to iPhone/iPad on iConnect+ and then the vedio will be played fluently.

iPhone 6+: 1920-by-1080-pixel, resolution at 401 ppi

iPhone 6: 1334-by-750-pixel, resolution at 326 ppi

iPhone 5s: 1136-by-640-pixel, resolution at 326 ppi

iPhone 5c: 1136-by-640-pixel, resolution at 326 ppi

iPad Air 2: 2048‑by‑1536-pixel, resolution at 264 ppi

iPad Air: 2048‑by‑15366-pixel, resolution at 264 ppi

iPad mini 3: 2048‑by‑1536-pixel, resolution at 326 ppi

iPad mini 2: 2048‑by‑1536-pixel, resolution at 326 ppi

(From Apple official website)