1313066 - No sound when playing video on particular devices

Status: RESOLVED WORKSFORME

(Firefox for Android Graveyard :: Audio/Video, defect, P1)

Description

[u421692]

Device: Nexus 6 (Android 6.0.1)
1. Go to http://people.mozilla.org/~atrain/mobile/tests/media.html
2. Play the second video

Expected result:
Video plays without any issue, with sound

Actual result:
Video plays without any issue, but with no sound

I was able to reproduce this only on Nexus 6, both on Aurora and Nightly

Regression window:
2016-10-03 - good build
2016-10-04 - bad build
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=955840bfd3c20eb24dd5a01be27bdc55c489a285&tochange=42c95d88aaaa7c2eca1d278399421d437441ac4d

I suspect bug 1306186, but this is not merged in Aurora, and Aurora it's also affected, so it might be something else.

Comment 1

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

Chunmin, 
Can you help check this bug? Would it be related to Bug 1309694?

Comment 2

[C.M.Chang[:chunmin]]

OK, I'll check whether this could be reproduced in Z3C first. I'll find a Nexus 6 later.

Comment 3

[C.M.Chang[:chunmin]]

Hmm...I can't reproduce it on my Z3C with android 5.1.1. I'll try it on Nexus 5 or simulator later.

Comment 4

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

Let me know if you cannot find a Nexus 6.

Comment 5

[u421692]

If you need more information, logcat or anything else, I'll be happy to provide it, since we have a Nexus 6 in the office.

Comment 6

[C.M.Chang[:chunmin]]

It cannot be reproduced on nexus 5 (Android 6.0.1) with neither.

(In reply to Mihai Pop from comment #5)
> If you need more information, logcat or anything else, I'll be happy to
> provide it, since we have a Nexus 6 in the office.
Thanks Mihai! I'll let you know if I need your help :)

Comment 7

[Milan Sreckovic [:milan] (needinfo for best results)]

Can we figure out how this affects 51?  What got uplifted compared to the range in comment 0?

Comment 8

[C.M.Chang[:chunmin]]

The nexus 6 works well on the latest build. I'll trace back to see what I could find.

Comment 9

[Parker]

I had this issue on my lg g5, but after updating the android version the issue was resolved. What version of android are you using?

Comment 10

[C.M.Chang[:chunmin]]

(In reply to Parker from comment #9)
> I had this issue on my lg g5, but after updating the android version the
> issue was resolved. What version of android are you using?
It had a problem to play sound on Nexus 6, but it works fine now(I try it today). The more reliable tests for cubeb(the audio engine behind firefox) is currently planning[0]. I'll forward the plan for Android if we have a solution.

[0] https://github.com/kinetiknz/cubeb/issues/193

Comment 11

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

If this bug does not happen again, maybe we could close it.
Mihai, 
Can you help check it again?

Comment 12

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

Sorina, 
Can you help test if the latest nightly still has this problem?
Thanks.

Comment 13

[Sorina Florean [:sflorean]]

Hi, 

Tested on latest Nightly (2017-01-08) with following devices: 
- LG G4 (Android 5.1)
- HTC Desire 820 and Nexus 5 (Android 6.0.1)
- Nexus 9 (Android 7.0)
The second video from page http://people.mozilla.org/~atrain/mobile/tests/media.html is playing without issues, with sound. I don't have the Nexus 6 device with (Android 6.0.1).

Comment 14

[Marcia Knous [:marcia]]

During triage I said I would test this with a Nexus 6 (although I am running on Android 7.0 rather than 6.0.1).

Using both the latest Aurora and Nightly I was unable to reproduce the issue with the second video (H264/MP4) playing without sound.

Comment 15

[Ryan VanderMeulen [:RyanVM]]

Closing this out as WFM then. If anybody is still able to reproduce, feel free to reopen the bug.