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A comment on Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max). Parent comment

Re:Video streaming battery life improved from 12h (12 Pro Ma... by spoonjim on Thursday September 16, 2021 @03:43PM (#28556446)
The variable refresh rate is what enables the huge battery life improvement. The iPhone 12 has to update its screen 60 times per second, even though movies are shot at 24 frames per second. That means it's showing you the same frame 2 or 3 times, but initiating an entire redraw operation to do so.

The new screen can just leave the image up for 1/24th of a second and then draw the next frame.

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Re:Video streaming battery life improved from 12h (12 Pro Ma... by rektide on Thursday September 16, 2021 @04:25PM (#28557068)
the numbers shown compare video, streamed, versus video downloaded. this is specifically an improvement on video streaming. i don't see where this theory that variable refresh rate would make a difference would come from.

there may be variable refresh rate differences! i just don't think that's what this comparison is highlighting.

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Re:Video streaming battery life improved from 12h (12 Pro Ma... by BugsJustFindMe on Thursday September 16, 2021 @05:52PM (#28558174)
> i don't see where this theory that variable refresh rate would make a difference would come from

People are comparing between the 13 and 13 Pro which get the same battery life for audio playback. There are very few other stated differences between them.

[ Parent | on HN ]