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About the new camera feature in iPhones, exclusive to iPhone 6S and 6S Plus, we wrote before a few days, when it was reported that Live Photos are twice the size of a classic full-12-megapixel photo. Since then, a few more pieces of information have surfaced detailing how Live Photos actually work.

The title of this article actually gets the question wrong - Live Photos are photos and videos at the same time. They are kind of packages consisting of a photo in JPG format and 45 smaller (960 × 720 pixels) images that make up videos in MOV format. The entire video is 3 seconds long (1,5 taken before and 1,5 after the shutter was pressed).

From this data, we can easily calculate that the number of frames per second is 15 (a classic video has an average of 30 frames per second). So Live Photos are really more suited to animating a still photo than creating something similar to Vine or Instagram video formats.

The editors found out what Live Photo consists of TechChrunch, when they imported it from an iPhone 6S to a computer running OS X Yosemite. Image and video were imported separately. OS X El Capitan, on the other hand, gets along with Live Photos. They look like photos in the Photos app, but a double-click reveals their moving and sound component. Furthermore, all devices with iOS 9 and Apple Watch with watchOS 2 can handle Live Photos correctly. If they are sent to devices that do not fall into these categories, they will turn into a classic JPG image.

From this information it follows that Live Photos are indeed designed as an extension of still photos to add liveliness. Due to its length and number of frames, video is not suitable for capturing more complex action. Matthew Panzarino in a review of the new iPhones says, “In my experience, Live Photos work best when they capture the environment, not the action. Since the frame rate is relatively low, a lot of camera movement when shooting or a moving subject will show pixelation. However, if you take a still photo with moving parts, the effect is extraordinary.”

Criticism associated with Live Photos mainly concerns the impossibility of taking a video without sound and the impossibility of editing the video - only the photo is always edited. Brian X. Chen of The New York Times také he mentioned, that if the photographer has Live Photos turned on, he must remember not to move the device for another 1,5 seconds after pressing the shutter button, otherwise the second half of the "live photo" will be a blur. Apple has already responded and said that it will eliminate this drawback in the next software update.

Source: MacRumors
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