1141424 - Youtube Center add-on causes embedded videos stop drawing / fail to appear / show up as black box

Status: RESOLVED DUPLICATE of bug 1135971

(Firefox :: Untriaged, defect)

Description

[Andy Pramoedya Soedarsono]

Attachment: firefox bug screenshot

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20150305021524

Steps to reproduce:

I opened website likes gizmodo.com, jalopnik.com, io9.com and opened several pages from them which contain embedded youtube video link.




Actual results:

The area where the embedded video preview would appear is instead showing black box, this problem is not appeared on Google Chrome.

However, if the embedded preview video is coming from vimeo, it will show up and play just fine.


Expected results:

The video preview (paused) should appear and will load and play video if I click on the play button.

Comment 1

[Andy Pramoedya Soedarsono]

Addendum:
I just downgrade the Firefox installation to version 35.0.1 and the problem mention above is resolved.
So it seems that Firefox 36.x is using new engine which is not compatible with youtube embedding methods

Comment 2

[Nickolay_Ponomarev]

Works for me on http://jalopnik.com/heres-what-happens-when-you-put-192-sticks-of-dynamite-1690315524

Can you reproduce in a new profile https://support.mozilla.com/en-US/kb/Managing-profiles ?r

Comment 3

[Andy Pramoedya Soedarsono]

Hmmm, maybe, I'll tried, because I'm on Firefox version 35.0.1 and doesn't have the problem anymore

Comment 4

[Nickolay_Ponomarev]

OK, thank you.

Comment 5

[Andy Pramoedya Soedarsono]

Just upgrade the Mozilla Firefox to 37.0.1 and still got the problem, and then I tried to create new profile which is worked.

And then I just remember that since Firefox 36.0.0, the engine has change significantly than some add-on will no longer work on Firefox 36.0.0 and newer, example is VideoDownload Helper.

And after some checking, I found out that the problem was caused by an old add-on called Youtube Center which although can be installed on newer Firefox but it will cause problem on video embedded on website, especially from Youtube.

I'll notify the developer of the Youtube Center and the problem is solved, so you can closed this bugzilla request, thank you

Comment 6

[Nickolay_Ponomarev]

Great, thanks for figuring this out and letting us know!