1316725 - YouTube videos does not start playing on PPC64

Status: NEW

(Core :: Audio/Video: Playback, defect, P5)

Description

[Mingcong Bai]

Attachment: A short strace.

User Agent: Mozilla/5.0 (X11; AOSC OS; Linux ppc64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20161029021523

Steps to reproduce:

Opening a YouTube video page (https://www.youtube.com/watch?v=3IfokvMHU8k).


Actual results:

The "loading" icon on the video player - dots spinning - were spinning for a long time, the video did not start playing.

Hovering mouse over the time line shows correct thumbnails.


Expected results:

The video should just play.

Comment 1

[roxleitan]

Mozilla/5.0 (X11; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/53.0
20161114043454

I have tested this issue on Ubuntu 16.06 x64 with Firefox latest Nightly (Build ID: 20161114043454) and Firefox latest release 50.0.1 and could not reproduce it.

Did you used an official build from :https://www.mozilla.org/en-US/firefox/new/ ?

Can you please upgrade your Firefox to latest release (50.0.1) and retest the issue?

Please test if the issue can be reproduced in the safe mode of Firefox: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode.

If you still have the issue please create a new profile, you have the steps here: 
https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles?redirectlocale=en-US&redirectslug=Managing-profiles#w_starting-the-profile-manager.

Comment 2

[Mingcong Bai]

The thing is, this is PowerPC64 architecture, not Intel x86_64.

Comment 3

[roxleitan]

Hi Mingcong Bai,

I  didn't manage to set up the environment and test the issue but I will assign a possible related component.
Can you please try the requests from comment 1 so we can continue the investigations?

Thank you

Comment 4

[Mingcong Bai]

(In reply to [e-mail] from comment #3)
> Hi Mingcong Bai,
> 
> I  didn't manage to set up the environment and test the issue but I will
> assign a possible related component.
> Can you please try the requests from comment 1 so we can continue the
> investigations?
> 
> Thank you

Firefox 50 on PPC64 won't even render the webpage (no loading spinner, just plain gray background) - no crashes though.

Comment 5

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

We don't have a way to debug this but I'd be prepared to review a patch if someone provides one. It is likely an endian issue.

Comment 6

[A. Wilcox [:awilfox]]

There is a loading spinner when WebM is enabled.  Disabling WebM and falling back to H.264 works (but with wrong colours).

Comment 7

[Cameron Kaiser [:spectre]]

WFM on ppc64le, so marking big-endian.

Comment 8

[BugBot [:suhaib / :marco/ :calixte]]

Clear a needinfo that is pending on an inactive user.

Inactive users most likely will not respond; if the missing information is essential and cannot be collected another way, the bug maybe should be closed as INCOMPLETE.

For more information, please visit BugBot documentation.