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Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

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Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#51

Post by asdff »

treesknees wrote: post #39
warrenm wrote: post #2

This is up there with the insane battery life of the M1-based MBPs There's no reason to carry a charger from the time you wake up until you go to bed ... unless you're doing something very "heavy"

I'll be carrying my charger with me. These numbers are great on paper, and sure they can reflect the overall trend of higher battery life, but are not examples of real world results. I wouldn't be surprised if these results are on airplane mode with the brightness locked to the lowest setting and the volume off with no Bluetooth accessories. The title says "video streaming battery life" however the website actually s…

Yeah I think in terms of battery health you don't want to be doing that either, starting the day full and having it discharge all day until its mostly tapped by the end. I had a 2020 intel macbook and while it wasnt the 24 hours the m1s get, apple claimed it was good for 12 hours so I decided it would be fine to use for my 8 hour workday without a charger.

After a year and like 230 battery cycles of doing that, the battery was down 15% capacity and I was reaching for the charger by the end of the day. I feel like if I had just kept it plugged in instead of discharging it so much each day, I wouldn't have lost so much capacity in so little time.

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#52

Post by judge2020 »

Kognito wrote: post #20
spuz wrote: post #4

There is a big difference between the local video playback and the streamed video playback on the older model. The new model seems to bring the two in line. iPhone 12 Pro Max Video Playback: 20 iPhone 12 Pro Max Video Playback (streamed): 12 iPhone 13 Pro Max Video Playback: 28 iPhone 13 Pro Max Video Playback (streamed): 25 As far as I know, the new models are slightly thicker and have a higher capacity battery whic…

Perhaps they’re assuming a cinematic frame rate of 24fps for streaming video and matching the refresh rate to that versus whatever refresh rate an iPhone 12 Pro has - guessing 60hz? Still seems a big increase but maybe the combination of the variable refresh display, larger battery and refined 5nm node (TSMC 5NP) all add up to something substantial? I was wondering if this was also factoring 5G in given last year’s 5…

5g modems are still power-hungry which is why iPhone will still default to '5G Auto' which uses LTE most of the time, and switches to 5g for data-hungry tasks.

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#54

Post by adar »

azinman2 wrote: post #27
KoftaBob wrote: post #23

Earlier quoted context omitted.

There's a big difference between under-clocking phones with older batteries to prevent random shutoff, and what you're claiming.

And this is exactly where I feel HN had really gone downhill. The quality of the comments keeps decreasing. There’s plenty of technical information out there on the underclocking to prevent reboot issue, and years ago I would have expected this audience to be well versed in it before commenting. All good things just come to an end, I suppose. The question is where to go instead?

The comment was quickly flagged by other users and is now dead. I'm not sure the hysteria is warranted, you're never going to find a public site where nobody ever posts anything dumb.

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#55

Post by dougmwne »

spuz wrote: post #4

There is a big difference between the local video playback and the streamed video playback on the older model. The new model seems to bring the two in line. iPhone 12 Pro Max Video Playback: 20 iPhone 12 Pro Max Video Playback (streamed): 12 iPhone 13 Pro Max Video Playback: 28 iPhone 13 Pro Max Video Playback (streamed): 25 As far as I know, the new models are slightly thicker and have a higher capacity battery whic…

I think it is about half due to variable refresh rate and less than half due to hardware efficiency improvements, and maybe 10% due to a larger battery. The 12 and 12 Pro got 11 hours of streaming playback, the 13 gets 15 hours with it's larger battery and more efficient hardware, while the 13 Pro gets 20 hours with it's variable refresh rate.

It appears that the battery on the 13 and 13 Pro are close in size since they both get 75 hours of music playback. The battery is slightly larger on the 13 than the 12 which got 65 hours of music. (I assume hardware efficiency would have very little effect on AAC decoding at this point, there couldn't have been much left to optimize.)

So all in all, looks like variable refresh will be a potentially very impressive feature, both for smoother UI and better battery life.

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#56

Post by mcbutterbunz »

treesknees wrote: post #39
warrenm wrote: post #2

This is up there with the insane battery life of the M1-based MBPs There's no reason to carry a charger from the time you wake up until you go to bed ... unless you're doing something very "heavy"

I'll be carrying my charger with me. These numbers are great on paper, and sure they can reflect the overall trend of higher battery life, but are not examples of real world results. I wouldn't be surprised if these results are on airplane mode with the brightness locked to the lowest setting and the volume off with no Bluetooth accessories. The title says "video streaming battery life" however the website actually s…

From another comment:

Testing conducted by Apple in August 2021 using preproduction iPhone 13 mini, iPhone 13, iPhone 13 Pro, and iPhone 13 Pro Max units and software, subscribed to LTE and 5G carrier networks. Video playback consisted of a repeated 2-hour 23-minute movie purchased from the iTunes Store, tested with stereo audio output. Video playback (streamed) consisted of a repeated 3-hour 1-minute HDR movie purchased from the iTunes Store, tested with stereo audio output. All settings were default except: Bluetooth was paired with headphones; Wi-Fi was associated with a network; the Wi-Fi feature Ask to Join Networks, Auto-Brightness, and True Tone were turned off.

https://www.apple.com/iphone/battery.html

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#57

Post by judge2020 »

cromka wrote: post #9
LolWolf wrote: post #7

Earlier quoted context omitted.

Maybe a hw decoder? (These already exist, but I mean, really tightly integrated with the browser.) Or some other offloading to hardware? That would be my best guess

They did say during the conference that the new chip had a new video encoder/decider, so that sounds plausible.

Maybe just more efficient since the A14 already had AV1 and HEVC support.

https://www.cpu-monkey.com/en/igpu-apple_a14-180

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#58

Post by mulderc »

masonjson wrote: post #47
gordon_freeman wrote: post #33

In general, I moved from Android to iPhone a couple of years ago and must say the battery on iPhone lasts so long compared to my old Android phone that there's no comparison really. Apple's work on iPhone battery management is impressive!

I don't want to question wether Apple's work on battery management is better than Google's, but want to outline the meta of such statements. In general, I don't think it's good to compare a new bought device with the device you are replacing, since the old device is probably a couple of years old. So the specs of the old one must be worse than the specs of the new one. Another example would be Tesla buyers who are re…

I had a similar experience and what it seems like is that Apple devices have pretty amazing standby time as compared to most android devices I have used. This has probably gotten better over the years but when I got my first iPhone it seemed like the battery didn't budge at all if it was in standby, such as leaving it unplugged overnight. I never had the experience with an android device.

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#59

Post by warrenm »

treesknees wrote: post #39
warrenm wrote: post #2

This is up there with the insane battery life of the M1-based MBPs There's no reason to carry a charger from the time you wake up until you go to bed ... unless you're doing something very "heavy"

I'll be carrying my charger with me. These numbers are great on paper, and sure they can reflect the overall trend of higher battery life, but are not examples of real world results. I wouldn't be surprised if these results are on airplane mode with the brightness locked to the lowest setting and the volume off with no Bluetooth accessories. The title says "video streaming battery life" however the website actually s…

I've been running my M1-based MBP since April

I've been able to use it for well over a full work day (on the order of 12+ hours) before dropping to 30% battery (from a full charge)

And that includes 8+ hours of using VDI, streaming video from YouTube, random other web browsing, etc

My iPhone 11 (if I'm not running some poorly-optimized games) will run for over 14 hours between charges of "constant" use (streaming audio (podcasts and Pandora), YouTube, email, facebook, etc)

I'd find it exceptionally hard to believe that the two-generations-newer, more-efficient (and powerful) A15 + larger battery is not going to be more performant and long-lasting between charges

Re: Video streaming battery life improved from 12h (12 Pro Max) to 25h (13 Pro Max)

#60

Post by jedberg »

bborud wrote: post #44
threshold wrote: post #30

I’m sorry but who watches video on a 6 inch phone today?

My wife at this very moment. In a room that has a high quality 65" display one the wall.

Hah good point! My wife will often watch on her phone or iPad while sitting in from of a large screen that is off. When I ask her why, she says it's just easier to use the device and then if she has to get up she can just take it with her without switching devices.
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