ubuntu-phone team mailing list archive

[Jim Hodapp <jim.hodapp@xxxxxxxxxxxxx>]

On Fri, Jul 31, 2015 at 6:00 PM, cédric bellegarde <
cedric.bellegarde@xxxxxxxxxxxx> wrote:

> My previous mail failed.
>
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> Message envoyé via Dekko depuis mon appareil Ubuntu
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> ---------- Forwarded message ----------
> From: "cédric bellegarde" <cedric.bellegarde@xxxxxxxxxxxx>
> To: <ubuntu-phone@xxxxxxxxxxxxxxxxxxx>
> Cc:
> Date: Fri, 31 Jul 2015 17:47:27 +0200
> Subject: Battery life when playing audio/videos
> Hello,
> Today, at 4pm, my phone was full charged, I listen to music for about 30m
> and a youtube video for about 20m.
> My phone is now at 54% of battery. Not really good in comparaison of my
> oneplus one with cm12.
>
> First issue is music playback, using about 16% of CPU. And so using too
> much battery, this need to be fixed.
>

This is actually pretty low and is not really the source of your battery
drain. Try your test again but just do music playback and no video and see
how much your battery goes down.

>
> For videos, maybe webbrowser plays video in full hd by default, maybe add
> an option for lower resolution playback.
>

This is definitely what ate your battery charge as when playing YouTube
videos from the browser that's doing full software decoding of the stream
with no hardware assistance. Thus it's going to be pretty inefficient. Work
is in progress right now to bring full hardware accelerated video playback
to all videos played through the browser.


>
> Regards,
>

Jim


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