Photos from video
I am thinking of upgrading from an iPhone 5 to a 6s. I was intrigued about the ability of the new phone to record 4K video. Will I be able to grab a frame from the video? I have a Panasonic stills camera that allows me to record 4K video and then select a frame which is saved as an 8MP JPEG. Does the new iPhone have the ability to do this, or do you need a separate iOS app to do it? John Varcoe You can tap the white circle in the bottom-right corner of the screen to take a still picture while you are recording, just like you can on your iPhone 5. On the 6 and 6 Plus, this will only give 4MP pictures, even though the camera normally takes 8MP photos. However, the 6s and 6s Plus will both capture 8MP stills (3840x2160 pixels), even while filming 4K video.
That only works while you are recording video. You can’t go back over existing footage and extract a single frame. The video footage is highly compressed, with image information spread over several frames. To rebuild this data into a single, full-resolution image you’ll need some additional software. Shutta (free, https://appsto.re/i6Sc32B) looks like it will do the trick.
The newest iPhones can take high-resolution stills at the same time as shooting 4K video.