1229806 - Youtube video is not played in-browser on particular device on Firefox 41 and 42

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: General, defect)

Description

[u421692]

Attachment: device-2015-12-02-181256.png

Device:
ZTE Grand X In (Android 4.0.4)(x86 device)
Firefox 42.0.2
1. Open Youtube.com
2. Play a video

Actual result:
Video is not played
When "stagefright.force-enabled" is set to "true", issue does not reproduce
This issue is reproducing on Firefox 41 and Firefox 42; on Firefox 40 youtube app is opened
Was able to reproduce this issue only on this particular device.

This issue is NOT reproducing on Firefox 43 Beta 8

Related to latest UA changes?

Comment 1

[Mike Taylor [:miketaylr]]

Hm. Is there something special about how we handle h264 on this device?

> When "stagefright.force-enabled" is set to "true", issue does not reproduce

Snorp, can you shed some light on why/when stagefright isn't used? It's possible Google is trying to feature detect something that is failing here.

Comment 2

[Mike Taylor [:miketaylr]]

Mihai, do you have any errors in the devtools console (or ADB) when you try to play the video?

> This issue is NOT reproducing on Firefox 43 Beta 8

The patch from 1217055 was just uplifted to Beta 43 (yesterday). That actually removes the UA workarounds we had in place...

Comment 3

[James Willcox (:snorp) ([e-mail]) (he/him)]

On a pre-4.1 device (such as this), we use a very error-prone video decoding backend that uses private libraries. If stagefright.force-enabled changes things, it means this device was blacklisted or something, and we wouldn't be able to decode H264 otherwise.

Comment 4

[u421692]

Nothing on android logs or web console logs
android logs:https://pastebin.mozilla.org/8853729
console logs:https://pastebin.mozilla.org/8853728

Comment 5

[Mike Taylor [:miketaylr]]

Thanks Mihai... sorry for letting this slip (blame Mozlando (or actually just blame me)). If this indeed works in 43 (which ships tomorrow?), I suggest we close this as WONTFIX.

Comment 6

[u421692]

This is now reproducing on Firefox 43 RC, works fine on Aurora. That's strange.

Comment 7

[Mike Taylor [:miketaylr]]

Hm, not sure what to do here without a device I can repro on. :/

Comment 8

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.