1307069 - audio playback stutters when firefox is in background

Status: RESOLVED INACTIVE

(Firefox for Android Graveyard :: Audio/Video, defect, P2)

Description

[Clemens Eisserer]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20160929120120
Firefox for Android

Steps to reproduce:

When playing back html5 media with firefox being not the foreground application, playback often stutters / jitters. Also when in background, FF is quite likely to be killed by the Android memory manager.

For a short time, firefox beta provided a backgournd-service when html5 media was played back, which solved all the above issues. Unfortunately it has been removed / disabled.

Comment 1

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

JW - any idea what is going on here?

Comment 2

[JW Wang [:jwwang] [:jw_wang]]

Hi John,
This issue happens on Android. Do you have any idea?

Comment 3

[John Lin [:jhlin][:jolin]]

Hi Clemens,
In bug 1226730 a background audio shutters problem is fixed and I saw you left a comment there. Does the same symptom came back in the 0929 build?
Also, for the 'killed by low mem manager' problem, could you please try 'adb shell bugreport' and upload the output here?
Thanks a lot.

Comment 4

[Clemens Eisserer]

Hi John,

My impression was this did not happen, when FF spawned a backgound service for playback - where I never experienced stutter or firefox being stopped by the memory manager. Any idea why this feature has been disabled / removed?

The memmory manager thing is quite normal for android. Any "normal" (non-background-service) app, especially when using a lot memory like Firefox, will be killed when in background to free memory for more active foreground apps.

Comment 5

[Blake Wu [:bwu][:blakewu]]

Bug 1308184 would be helpful to fix this bug.

Comment 6

[Blake Wu [:bwu][:blakewu]]

Clemens, 
Our shutdown decoders has been enabled on Firefox 55 and 56. That could save some CPU resource and should let audio playback have more resource to play. 
Can you help check if you still can see this problem on 55 or 56?

Comment 7

[Blake Wu [:bwu][:blakewu]]

Mass change P1->P2 to align with new Mozilla triage process.

Comment 8

[Firefox Bug Husbandry Bot]

Closing per https://bugzilla.mozilla.org/show_bug.cgi?id=1473195

Contact :susheel if you think this bug should be re-opened