How do live pictures work and have “video” of things before the capture button is pushed?

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Is the camera somehow always on?

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5 Answers

Anonymous 0 Comments

The only difference between taking a live photo, and a normal one is when the phone chooses to save things to the phone’s storage. Your camera is already always active (hence why you can see it), when you’re in the camera app.

When you take a live photo, all it’s doing is saying “this is roughly when what I wanted happened”, rather than “I WANT THIS EXACT SECOND”. When you then go to edit it, you’re just editing a very small video, with some fancy tools to turn it into what we would normally call a GIF.

The technology is similar to things used to capture cool moments in video games, where the system is constantly recording to memory, and removing it as it becomes unnecessary. You then press a button and it says “that was cool, record that”, and they also usually add a few extra seconds after the button press, depending on settings.

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