The standard video format for these 326 ppi devices is .
: Usually paired with AAC-LC audio up to 160 Kbps. 3. "Deep Text" and Research 326 mp4
: 326 pixels per inch (ppi) was chosen because, at a typical viewing distance, the human eye cannot distinguish individual pixels at this density. Primary Devices : This specification is foundational to: iPhone 4, 4S, 5, 5c, and 5s . iPad mini (2nd, 3rd, 4th, and 5th generations). 2. The "MP4" Connection: Video Support The standard video format for these 326 ppi devices is
: Apple provides "deep" documentation on iPhone 5c and iPhone 4 specs, covering everything from the 326 ppi display to MP4 playback limits. at a typical viewing distance