1158423 - html5 wont play on you tube

Status: RESOLVED DUPLICATE of bug 1157472

(Core :: Audio/Video, defect)

Description

[Todd]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:37.0) Gecko/20100101 Firefox/37.0
Build ID: 20150415140819

Steps to reproduce:

firefox-37.0.2.tar.bz2  x64 (be nice if you put the 64 in the file name somewhere)
Scientific Linux 6.6 x64

$ uname -r
2.6.32-504.12.2.el6.x86_64


Dear Mozilla,

The the following web site,

    https://www.youtube.com/watch?v=ALBwaO-rAsE

I am getting:

    Your browser does not currently recognize of of the video formats
    Available.  Click here to visit our frequently asked questions
    about HTML5 video

I have the "YouTube ALL HTML5 2.1.3" extension installed.  Problem
exists with the extension enabled or disabled.

This one won't play either, but it is not You Tube and I don't know if it is related:
http://www.refinery29.com/2015/04/85731/kelsey-higley-manipulated-video

Many thanks,
-T

Comment 1

[Gingerbread Man]

1. Disable that add-on, then restart Firefox.
2. What does the YouTube HTML5 page [1] say about HTML5 video support? You should see the following items checked: HTMLVideoElement, H.264, WebM VP8. If any of those aren't listed as supported, check your package manager and make sure GStreamer [2] is installed.
3. On the aforementioned page, you can click the “Request the HTML5 player” button to prefer HTML5 video over Flash Player. Cookies from YouTube must be accepted for the preference to be remembered.

[1] https://www.youtube.com/html5
[2] http://gstreamer.freedesktop.org

Comment 2

[Todd]

(In reply to Gingerbread Man from comment #1)
> make sure GStreamer [2] is installed.

AH HA!

GStreamer is installed but disabled in Firefox "media.gstreamer.enabled = false" as "true" causes Firefox to crash when clicking on any YouTube video.

Which makes this a duplicate of 
https://bugzilla.mozilla.org/show_bug.cgi?id=1157472

Thank you guys for looking into this for me!

-T

$ rpm -qa gstreamer\*
gstreamer-plugins-base-devel-0.10.29-2.el6.x86_64
gstreamer-devel-0.10.29-1.el6.x86_64
gstreamer-0.10.29-1.el6.x86_64
gstreamer-plugins-good-0.10.23-1.el6.x86_64
gstreamer-tools-0.10.29-1.el6.x86_64
gstreamer-ffmpeg-0.10.11-1.el6.rf.x86_64
gstreamer-plugins-bad-0.10.19-3.el6.rf.x86_64
gstreamer-plugins-ugly-0.10.16-2.el6.rf.x86_64
gstreamer-0.10.29-1.el6.i686
gstreamer-plugins-bad-free-0.10.19-3.el6_5.x86_64
gstreamer-plugins-base-0.10.29-2.el6.x86_64
gstreamer-plugins-base-0.10.29-2.el6.i686