I tried to build an a modified copy of firefox using https://fedoraproject.org/wiki/How_to_create_an_RPM_package but installation always fails with 
error: unpacking of archive failed on file /usr/lib/firefox/firefox;50167b6f: cpio: Digest mismatch
even if I build it completely in modified.

It's a problem with prelink. Uninstall it and the package should build ok.

I've done a little bit testing and I've problem with ogg theora video here:
http://www.quirksmode.org/html5/tests/video.html
Sound is ok, but video is black.
On some sites (like http://double.co.nz/video_test/video.svg) video freeze after few seconds. Maybe is just my fedora 17 but we'll have to investigate it further before we ship it.

thanks. removing prelink allows me to build the firefox rpm.

i added
echo "ac_add_options --enable-gstreamer" >> .mozconfig
to the spec file.

i then remove firefox with yum, and install the package i build with rpm -i. however look at about:buildconfig it looks like i still have the fedora version, it does not have the --enable-gstreamer, and it says the build machine is buildvm-04. do i need to build xulrunner aswell?

i rebuilt xulrunner with enable-gstreamer, and get similar to you. on the quirksmode the H.264 and webm play fine, but the ogg gives no picture sometimes and freezes other times.

On a x86-64 gentoo desktop the ogg files work fine, but thats a lot of different variables.

*** Bug 841234 has been marked as a duplicate of this bug. ***

I had less success with rebuilding firefox 15. it crashes on http://www.quirksmode.org/html5/tests/video.html and hangs on http://www.mozilla.org/en-US/firefox/15.0/firstrun/

Just noticing for anybody who wants to play with this a comment on the upstream bug:
> 
> I think it would be unwise for distros to turn GStreamer on before bug
> 760140 is fixed.

That's https://bugzilla.mozilla.org/show_bug.cgi?id=760140

We'll build Firefox with gstreamer as soon as gstreamer-1.0 will be available.

(In reply to comment #9)
> We'll build Firefox with gstreamer as soon as gstreamer-1.0 will be
> available.

I think it's already happened - just look at "yum list gstreamer1*" output.

...and the bug https://bugzilla.mozilla.org/show_bug.cgi?id=760140 is fixed....

(In reply to comment #10)
> (In reply to comment #9)
> > We'll build Firefox with gstreamer as soon as gstreamer-1.0 will be
> > available.
> 
> I think it's already happened - just look at "yum list gstreamer1*" output.

Oh, I didn't know there's gstreamer1 package, thanks for pointing this out. I'll to test builds with gstreamer1 and if everything will be ok, we'll release Firefox with gstreamer soon.

Ping. Any news here?

Firefox is not ready for gstreamer1 yet, see https://bugzilla.mozilla.org/show_bug.cgi?id=806917 for further info. Since gstreamer 0.10 is now obsolete we're going to compile firefox with gstreamer1 only when it is ready.

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I saw gstreamer enabled by default in the firefox 24 release, went to try it out and fedora has disabled it via --gstreamer-disable in mozconfig. Why did gstreamer get disabled?

* the x86_64 binary from mozilla played the h.264 test on http://www.quirksmode.org/html5/tests/video.html ok on my f19 x86_64 laptop.
* bug 1009715 could be marked duplicate of this one.

*** Bug 1009715 has been marked as a duplicate of this bug. ***

I had a go rebuilding the fedora RPM on f19 after removing the --disable-gstreamer line from rpmbuild/SOURCES/xulrunner-mozconfig

I get the error.

configure:20600: checking for gstreamer-0.10 >= 0.10.25
                      gstreamer-app-0.10
                      gstreamer-plugins-base-0.10
*** Fix above errors and then restart with               "make -f client.mk build"
make[2]: Leaving directory `/builddir/build/BUILD/xulrunner-24.0/mozilla-release'
make[1]: Leaving directory `/builddir/build/BUILD/xulrunner-24.0/mozilla-release'

I have 
gstreamer-devel-0.10.36-3.fc19.x86_64
gstreamer-plugins-base-devel-0.10.36-4.fc19.x86_64
installed.

(In reply to Sam Tygier from comment #18)
> I had a go rebuilding the fedora RPM on f19 after removing the
> --disable-gstreamer line from rpmbuild/SOURCES/xulrunner-mozconfig

See comment 14 for an explanation as to why it's not yet enabled and the upstream bug which tracks gstreamer-1.0 support

Thanks Peter, I should have read more carefully.

Sam, the xulrunner and firefox rpms built ok for me. I don't know why. I installed every gstreamer package I could find including gstreamer1 devel packages but I don't think configure looks at those.

I had a strange dependency error when I went to install xulrunner, workarounded by rpm -U --nodeps.

# yum localinstall  xulrunner-24.0-3.fc19.x86_64.rpm xulrunner-devel-24.0-3.fc19.x86_64.rpm 
<snip>
Error: Package: xulrunner-24.0-3.fc19.x86_64 (/xulrunner-24.0-3.fc19.x86_64)
           Requires: sqlite >= 3.8.0.2
           Installed: sqlite-3.8.0-2.fc19.x86_64 (@updates)
               sqlite = 3.8.0-2.fc19
           Available: sqlite-3.7.17-1.fc19.i686 (fedora)
               sqlite = 3.7.17-1.fc19

*** Bug 962728 has been marked as a duplicate of this bug. ***

The latest builds (firefox-26.0-5) have gstreamer enabled, so you can test it. It's the old, 0.10 one. You can get it there - http://koji.fedoraproject.org/koji/packageinfo?packageID=37

Note - you need the Firefox package only.

with the *really* latest build it works
that is the one with no dependency to xulrunner

i tried it yesterday with firefox-26.0-3.fc20.x86_64 before 
answered at the devel-list with "if that would be true"
and with this package it did not
_____________________________

fine now with:

[harry@rh:~]$ rpm -q firefox
firefox-26.0-5.fc20.x86_64

[harry@rh:~]$ rpm -qa | grep gstreamer
gstreamer1-plugins-base-1.2.2-1.fc20.x86_64
gstreamer-plugins-bad-free-0.10.23-19.fc20.x86_64
gstreamer-ffmpeg-0.10.13-10.fc20.x86_64
gstreamer1-1.2.2-1.fc20.x86_64
gstreamer-plugins-good-0.10.31-10.fc20.x86_64
gstreamer-python-0.10.22-5.fc20.x86_64
gstreamer-plugins-base-0.10.36-6.fc20.x86_64
gstreamer-0.10.36-6.fc20.x86_64
gstreamer-plugins-ugly-0.10.19-14.fc20.x86_64
gstreamer-tools-0.10.36-6.fc20.x86_64

firefox-26.0-5.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/firefox-26.0-5.fc20

firefox-26.0-5.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/firefox-26.0-5.fc19

Package firefox-26.0-5.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing firefox-26.0-5.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-0876/firefox-26.0-5.fc20
then log in and leave karma (feedback).

sorry , firefox-26.0-5.fc20.x86_64 fails to play some pre-rolls which works with flash-plugin, so I can't give positive karma to this build ... 

I install this two days ago, and I use firefox as default browser and with gsstreamer , I had already a few situations that not work accurate as with previous version .

(In reply to Sergio Monteiro Basto from comment #27)
> sorry , firefox-26.0-5.fc20.x86_64 fails to play some pre-rolls which works
> with flash-plugin, so I can't give positive karma to this build ... 
> 
> I install this two days ago, and I use firefox as default browser and with
> gsstreamer , I had already a few situations that not work accurate as with
> previous version .

Thank you for testing. Please be sure you have required gstreamer codecs installed.

And attach links to non working videos if possible that we can investigate it. Thank you.

> sorry , firefox-26.0-5.fc20.x86_64 fails to play some pre-rolls 
> which works with flash-plugin, so I can't give positive karma 
> to this build ...

gstreamer-support does not take away the flash-plugin
it covers the cases where no flash-plugin is installed
and a proper written webpage offers HTML5 video with H264

besides that it is not very helpful say "to play some pre-rolls"
without an real-world example..........

http://www.rtp.pt/play/p1366/e137042/os-filhos-do-rock

This page asks to install flash player. Most probably badly written webpage. Please give examples, which, for example, work with google chrome, but does not with FF.
For example, http://www.quirksmode.org/html5/tests/video.html works.

> http://www.rtp.pt/play/p1366/e137042/os-filhos-do-rock

WTF that is *flash* - has that to do with gstreamer?
EXPLAIN why you can't give karma because a off-topic crap-page?

do you expect that FF with gstreamer completly replaces flash?
if yes how did you come to this idea?

the intention of firefox with gstreamer is that a smart web-developer can use HTML5 with H264 baseline for videos *with only one mediafile* instead offer H264, OGG and WEBM or at least 2 of them and without need flash at all as fallback

currently the webdeveloper has to chose

* ignore FF on Fedora completly
* force the user to install flash which is *not* part of Fedora
* offer multiple videos to support browsers with no H264 and no Flash

so *what* is your *real* problem?

(In reply to Harald Reindl from comment #33)
> > http://www.rtp.pt/play/p1366/e137042/os-filhos-do-rock
> 
> WTF that is *flash* - has that to do with gstreamer?
> EXPLAIN why you can't give karma because a off-topic crap-page?
> 
> do you expect that FF with gstreamer completly replaces flash?
> if yes how did you come to this idea?
> 
> the intention of firefox with gstreamer is that a smart web-developer can
> use HTML5 with H264 baseline for videos *with only one mediafile* instead
> offer H264, OGG and WEBM or at least 2 of them and without need flash at all
> as fallback
> 
> currently the webdeveloper has to chose
> 
> * ignore FF on Fedora completly
> * force the user to install flash which is *not* part of Fedora
> * offer multiple videos to support browsers with no H264 and no Flash
> 
> so *what* is your *real* problem?

OK yesterday I got a bunch of problem , Firefox crash , prerolls in rtp.pt are all fucked up , etc etc , today I wake up reinstall firefox and things seems to work ... .

Sorry for the alarm , and well Firefox will be push stable as is write .

firefox-26.0-5.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

firefox-26.0-6.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/firefox-26.0-6.fc20

firefox-26.0-6.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/firefox-26.0-6.fc19

hi after test firefox in two computers I can since I install firefox with gsstream breaks many sites with flash , in my last test in a different machine , put flash flicking , 

I talking about pirate sites which I cant put here , I only got http://www.rtp.pt/play/ as example , more strange while I'm writing this comment was that flicking stop and site seems works well now, I don't understand why sometimes I have firefox all messed up and I can't fix it, even with a reboot .

I will test in a third computer tonight.

(In reply to Sergio Monteiro Basto from comment #38)
> hi after test firefox in two computers I can since I install firefox with
> gsstream breaks many sites with flash , in my last test in a different
> machine , put flash flicking , 
> 
> I talking about pirate sites which I cant put here , I only got
> http://www.rtp.pt/play/ as example , more strange while I'm writing this
> comment was that flicking stop and site seems works well now, I don't
> understand why sometimes I have firefox all messed up and I can't fix it,
> even with a reboot .
> 
> I will test in a third computer tonight.

Could you please attach 'about:support' page (you can also get it from menu Help/Troubleshooting information)?

You can also try to disable gstreamer backed in about:config settings named media.gstreamer.enabled.

set media.gstreamer.enabled to 0,  doesn't fix flash flicking , only downgrade to firefox-26.0-3.fc20.x86_64 


Application Basics
------------------

Name: Firefox
Version: 26.0
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:26.0) Gecko/20100101 Firefox/26.0

Extensions
----------

Name: Adblock Plus
Version: 2.4.1
Enabled: true
ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Firebug
Version: 1.12.6
Enabled: true
ID: firebug.com

Name: Live HTTP headers
Version: 0.17
Enabled: true
ID: {8f8fe09b-0bd3-4470-bc1b-8cad42b8203a}

Name: Tab Mix Plus
Version: 0.4.1.2.02
Enabled: true
ID: {dc572301-7619-498c-a57d-39143191b318}

Name: Web Developer
Version: 1.2.5
Enabled: true
ID: {c45c406e-ab73-11d8-be73-000a95be3b12}

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.places.smartBookmarksVersion: 4
browser.sessionstore.resume_from_crash: false
browser.sessionstore.upgradeBackup.latestBuildID: 20140113150806
browser.startup.homepage: http://www.sapo.pt/
browser.startup.homepage_override.buildID: 20140113150806
browser.startup.homepage_override.mstone: 26.0
browser.tabs.onTop: false
browser.tabs.warnOnClose: false
dom.disable_open_during_load: false
dom.mozApps.used: true
dom.w3c_touch_events.expose: false
extensions.lastAppVersion: 26.0
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1390421781
places.history.expiration.transient_current_max_pages: 50659
places.history.expiration.transient_optimal_database_size: 81114070
places.last_vacuum: 1295465652
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
plugin.soname.list:
privacy.sanitize.migrateFx3Prefs: true
security.enable_java: true
security.warn_viewing_mixed: false
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1389035660

Graphics
--------

Adapter Description: Intel Open Source Technology Center -- Mesa DRI Intel(R) Q45/Q43
Device ID: Mesa DRI Intel(R) Q45/Q43
Driver Version: 2.1 Mesa 9.2.5
GPU Accelerated Windows: 0/2 Basic
Vendor ID: Intel Open Source Technology Center
WebGL Renderer: Intel Open Source Technology Center -- Mesa DRI Intel(R) Q45/Q43
windowLayerManagerRemote: false
AzureCanvasBackend: cairo
AzureContentBackend: none
AzureFallbackCanvasBackend: none
AzureSkiaAccelerated: 0

JavaScript
----------

Incremental GC: true

Accessibility
-------------

Activated: false
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.10.2
Version in use: 4.10.2

NSS
Expected minimum version: 3.15.3.1
Version in use: 3.15.4 Extended ECC

NSSSMIME
Expected minimum version: 3.15.3.1
Version in use: 3.15.4 Extended ECC

NSSSSL
Expected minimum version: 3.15.3.1
Version in use: 3.15.4 Extended ECC

NSSUTIL
Expected minimum version: 3.15.3
Version in use: 3.15.4

firefox-26.0-6.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Please try the safe mode:
$ firefox -safe-mode
or with fresh profile:
$ firefox -P

You can also test COPR build without gstreamer enabled, I've made it there:
https://copr.fedoraproject.org/coprs/xhorak/firefox-without-gstreamer/
(to be sure it is a gstreamer issue and not new standalone firefox package).

(In reply to Jan Horak from comment #42)
> Please try the safe mode:
> $ firefox -safe-mode
> or with fresh profile:
> $ firefox -P
> 
> You can also test COPR build without gstreamer enabled, I've made it there:
> https://copr.fedoraproject.org/coprs/xhorak/firefox-without-gstreamer/
> (to be sure it is a gstreamer issue and not new standalone firefox package).

Hi , thank you for caring about this , and with firefox-26.0-7.fc20.x86_64, I got exactly the same flash problem.  

Thanks,

I back to firefox-26.0-3.fc20.x86_64 [1] and flash is working again , since I run firefox -P  from konsole, I saw some messages, I notice I got a message with firefox-26.0-7 that I haven't with firefox-26.0-3 : 

Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory

Thanks, 


[1] with rpm -Uvh http://kojipkgs.fedoraproject.org//packages/firefox/26.0/3.fc20/x86_64/firefox-26.0-3.fc20.x86_64.rpm --oldpackage

(In reply to Sergio Monteiro Basto from comment #44)
> Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object
> file: No such file or directory
> Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object
> file: No such file or directory

Those messages are not significant here, flash prints them with disabled gstreamer too.

I can confirm the flash bug. Very easy to reproduce just go to speedtest.net

Disabling layers.acceleration.force-enabled which I had set to true before fixes it though.

(In reply to drago01 from comment #47)
> Disabling layers.acceleration.force-enabled which I had set to true before
> fixes it though.

No this just make it happen less often but still reproduceable.

Hi please could you do in a build in copr for Firefox with gstreamer and revert "Drop dependency on libxul, Firefox is now standalone package which does not require xulrunner."

I have to open a new bug ?

(In reply to Sergio Monteiro Basto from comment #50)
> I have to open a new bug ?

Yes, please - stop polluting this one with your unrelated error reports.

firefox-27.0.1-1.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/firefox-27.0.1-1.fc20

firefox-27.0.1-1.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/firefox-27.0.1-1.fc19

firefox-27.0.1-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

firefox-27.0.1-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.