1111270 - HTML5 video playback corruption on Linux

Status: RESOLVED WORKSFORME

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

Description

[boran.car]

Attachment: Video corruption screenshot

Opening any YouTube HTML5 video results in random video frames getting corrupt as shown in video_corruption_screenshot.png. I have disabled hw acceleration and used about:config to disable WebGL.

Comment 1

[boran.car]

Attachment: Almost minimal html that reproduces the bug

Comment 2

[boran.car]

Attachment: Removing everything but the video element can fix the issue

Comment 3

[boran.car]

I have added almost a minimal html that exhibits the same behavior by copying the video and the div element immediately after from the YouTube site. By removing everyhing but the video element the issue can be fixed. Note that it's necessary to switch to another tab and return to the video tab to fix the issue.

Another way of fixing the issue with the almost minimal html that reproduces the bug is switching to Responsive Design View (Ctrl+Shift+M) and resizing the window just to show the video element. It might be necessary to switch to another tab and return back to see the issue disappear.

Comment 4

[boran.car]

Attachment: Responsive design view fix by showing only the video element

Comment 5

[boran.car]

Finally, system information:

$ cat /etc/redhat-release 
Fedora release 20 (Heisenbug)

$ uname -a
Linux localhost.localdomain 3.17.4-200.fc20.x86_64 #1 SMP Fri Nov 21 23:26:41 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ yum info firefox
Loaded plugins: langpacks, refresh-packagekit
Installed Packages
Name        : firefox
Arch        : x86_64
Version     : 34.0
Release     : 1.fc20
Size        : 115 M
Repo        : installed
From repo   : updates
Summary     : Mozilla Firefox Web browser
URL         : http://www.mozilla.org/projects/firefox/
Licence     : MPLv1.1 or GPLv2+ or LGPLv2+
Description : Mozilla Firefox is an open-source web browser, designed for standards
            : compliance, performance and portability.

$ glxinfo
...
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.3
OpenGL core profile shading language version string: 3.30
...

All Firefox plugins are disabled as well as HW acceleration and WebGL

Comment 6

[boran.car]

The issue, as well as fixes (workarounds) are reproducible using vanilla Firefox 34.0.5 from the Mozilla website.

Comment 7

[:Gijs (he/him)]

Milan, considering that it's related to the content surrounding the video element, this looks like a graphics issue on Linux to me. Is that sensible and/or do you know who could look into this?

Comment 8

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

Have we reproduced this on another computer?  I don't know what would cause video to look different based on the rest of the page, Anthony, any ideas?

Comment 9

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

(In reply to Milan Sreckovic [:milan] from comment #8)
> Have we reproduced this on another computer?  I don't know what would cause
> video to look different based on the rest of the page, Anthony, any ideas?

Can you reproduce the same issue MP4 or is this specific to WebM?

Comment 10

[boran.car]

(In reply to Anthony Jones (:kentuckyfriedtakahe, :k17e) from comment #9)
> (In reply to Milan Sreckovic [:milan] from comment #8)
> > Have we reproduced this on another computer?  I don't know what would cause
> > video to look different based on the rest of the page, Anthony, any ideas?
> 
> Can you reproduce the same issue MP4 or is this specific to WebM?

Can't really tell on YouTube which is which, but this video works ok (no errors):
https://www.youtube.com/watch?v=Un71DhFqH7Q

This one doesn't (has errors like most so guessing WebM):
https://www.youtube.com/watch?v=OJvF-MBJMB8

That means the first one could be MP4.

Comment 11

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

Right click on the video and choose "stats for nerds".

Comment 12

[boran.car]

Can't reproduce on Fedora 21 and I didn't have a chance to roll back to Fedora 20 yet.

Comment 13

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

I'm guessing that this works in 44. Re-open if there is still an issue.