RedShark News offers a write-up on the new iOS and iMovie and the ability users have to edit up to three streams of 4K video on their devices:
"While iMovie is a slightly idiosyncratic package," the piece suggests, "the new version 2.2 does at least showcase what is possible with the latest A9 chipsets. 4K playback has featured as far back as the iPhone 6 models, albeit largely unannounced and unused, but now Apple can support multiple 4K streams — two with the 6S and what looks to be three for the iPad Pro with its A9x chip.
"Underlying the headline 4K capability is also the rather useful ability to work with 1080p video in up to 60fps.
"We’ve been playing around with iOS9’s new multitasking mode and, while not reliably implemented in too many apps beyond the built-in Apple set, it does quite dramatically improve the functionality and usability of even a normal-sized iPad. Add in a 12.9in screen and a full height media browser and you could have a quite phenomenally capable machine on your hands."