Ubuntu

Problem with Youtube on Firefox.

Asked by michael

This is not, the most important question, but I would like to know what causes it.
Click on a Youtube (any) and Video and Audio start correctly, about 5 to 10 seconds later Audio starts again. Now one video, with TWO audios, out of sync. Hit mute, only one audio. It is out of sync with video.
Have posted on Mozilla support for a week, no response.

Ubuntu 14.04 64 bit 3.19.0-65-generic Gnome 3.8.4
Firefox 48
Installed Plug-ins
LibreOffice Plug-in Shockvave Flash 11.2.202.632 Updated 06/28/16 VLC Multimedia Plugin 3.10.1 DjView-4.9 OpenH264 Video Codec
Browsers installed.
Chrominum
Opera
Firefox
QupZilla
Browser
Only Firefox has the problem.
Pentium(R) Dual-Core CPU E5300 @ 2.60GHz
Memory 3872 MiB
HP Compaq dc5800

HP-Compaq-dc5800-Microtower:~$ lsb_release -a; uname -a; dpkg -l | egrep 'flash|gnash|swf|spark'
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
Linux HP-Compaq-dc5800-Microtower 3.19.0-65-generic #73~14.04.1-Ubuntu SMP Wed Jun 29 21:05:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
ii adobe-flash-properties-gtk 1:20160712.1-0ubuntu0.14.04.1 amd64 GTK+ control panel for Adobe Flash Player plugin
ii adobe-flash-properties-kde 1:20160712.1-0ubuntu0.14.04.1 amd64 KDE control panel Adobe Flash Player plugin
ii adobe-flashplugin 1:20160712.1-0ubuntu0.14.04.1 amd64 Adobe Flash Player plugin
rc flashplugin-installer 11.2.202.632ubuntu0.14.04.1 amd64 Adobe Flash Player plugin installer
ii pepperflashplugin-nonfree 1.3ubuntu1 amd64 Pepper Flash Player - browser plugin

Thanks

Question information

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Solved by:
Manfred Hampl
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Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

Is it the same in Google Chrome?

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michael (yellupcm-gmail) said : 		#2

Actionparsnip
I just installed Chrome, it works fine just like all browsers, except Firefox.

Revision history for this message
Manfred Hampl (m-hampl) said : 		#3

If you try with a guest login, is it the same?

Revision history for this message
michael (yellupcm-gmail) said : 		#4

Manfred
When I log in as a guest, Firefox Youtube works as it should. I did not think to check this. I have no experience with this kind of problem. Suggestions welcome.

Revision history for this message
Manfred Hampl (m-hampl) said : 		#5

If the problem is only present when logged in with your own user name, but not in a guest session, then this might be an indication that it is caused by your firefox settings.

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michael (yellupcm-gmail) said : 		#6

 I have checked the settings and found nothing that should cause this problem. I downloaded an Youtube video to hard drive. It plays correctly from there. I am going to look into HTML5 and Flash. Is it possible somehow both could be playing their audio? Also, no trouble with Minitube.
Thanks

Revision history for this message
Best Manfred Hampl (m-hampl) said : 		#7

You might try deleting (or renaming away for possible restore) your firefox settings folder.

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#8

I assume you don't use Thunderbird as your email client (if you do then don't use the commands here). You can reset your Firefox settings by closing the browser then running:

mv ~/.mozilla ~/.mozilla_old

Then launch the browser. You will get a vanilla profile and you can test the plugin.

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#9

I assume you don't use Thunderbird as your email client (if you do then don't use the commands here). You can reset your Firefox settings by closing the browser then running:

mv ~/.mozilla ~/.mozilla_old

Then launch the browser. You will get a vanilla profile and you can test the plugin.

Revision history for this message
michael (yellupcm-gmail) said : 		#10

This is solved! Thanks to both Actionparsnip and Manfred. When I disabled "Youtube HTML5 - Video" it works correctly. I don't quite understand why this happened when I am logged in, but not when logged in as Guest. I am guessing that Guest only gets a vanilla profile.
Thanks again.

Revision history for this message
michael (yellupcm-gmail) said : 		#11

Thanks Manfred Hampl, that solved my question.