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Firefox doesn't play "embedded" youtube videos, but plays the videos on youtube.com

Posted

Firefox won't play youtube videos embedded on other sites, but plays the videos on youtube.com this only happens with youtube, and did not happen with non-youtube videos embedded in other websites, atleast not yet.

Firefox won't play youtube videos embedded on other sites, but plays the videos on youtube.com this only happens with youtube, and did not happen with non-youtube videos embedded in other websites, atleast not yet.

Chosen solution

well, what solved it eventually was clearing cookies somehow I skipped that step during the time I spent figuring it out Thanks anyway everybody!

Read this answer in context 0

Additional System Details

Installed Plug-ins

  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Shockwave Flash 11.5 r502
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • npsitesafety
  • SiteAdvisor
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • Unity Player 3.5.6f4
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.0
  • Google Update
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • iTunes Detector Plug-in
  • VLC media player Web Plugin 2.0.2
  • IE Tab 2 Plug-in for Mozilla/Firefox
  • DivX VOD Helper Plug-in
  • Pando Web Plugin
  • NPWLPG
  • DivX Web Player version 2.0.3.4
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers
  • np-mswmp

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0

More Information

Application Basics
Name
Firefox
Version
17.0.1
User Agent
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0
Profile Folder
Show Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Download Statusbar
0.9.10
true
{D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389}
FoxyProxy Basic
3.1
true
foxyproxy-basic@eric.h.jung
FoxyProxy Standard
4.1
true
foxyproxy@eric.h.jung
IE Tab 2 (FF 3.6+)
4.1.3.1
true
{1BC9BA34-1EED-42ca-A505-6D2F1A935BBB}
McAfee SiteAdvisor
3.6.0
true
{4ED1F68A-5463-4931-9384-8FFF5ED91D92}
Morning Coffee
1.35
true
morningCoffee@shaneliesegang
nzbdStatus
1.0.15.1
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sabnzbdstatus@dq5studios.com
RealDownloader
1.3.0
true
{34712C68-7391-4c47-94F3-8F88D49AD632}
AVG Safe Search
12.0.0.2191
false
{1E73965B-8B48-48be-9C8D-68B920ABC1C4}
AVG Security Toolbar
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avg@toolbar
Firefox Synchronisation Extension
7.3.4.51
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{A27F3FEF-1113-4cfb-A032-8E12D7D8EE70}
Skype Click to Call
5.9.0.9216
false
{82AF8DCA-6DE9-405D-BD5E-43525BDAD38A}
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Value
accessibility.browsewithcaret
true
accessibility.typeaheadfind.casesensitive
1
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
358400
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size.use_old_max
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browser.cache.disk.smart_size_cached_value
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browser.display.background_color
#C0C0C0
browser.display.use_system_colors
true
browser.history_expire_days.mirror
180
browser.places.smartBookmarksVersion
4
browser.search.useDBForOrder
true
browser.startup.homepage
about:home
browser.startup.homepage_override.buildID
20121128204232
browser.startup.homepage_override.mstone
17.0.1
dom.ipc.plugins.enabled.npietab2.dll
true
extensions.lastAppVersion
17.0.1
gfx.direct3d.prefer_10_1
true
keyword.URL
https://www.google.com/#hl=en&q=
network.cookie.prefsMigrated
true
network.dns.disableIPv6
true
network.dnsCacheEntries
200
network.dnsCacheExpiration
240
network.http.connect.timeout
60
network.http.keep-alive
true
network.http.keep-alive.timeout
300
network.http.max-connections
48
network.http.max-connections-per-server
16
network.http.max-persistent-connections-per-proxy
12
network.http.max-persistent-connections-per-server
8
network.http.pipelining
true
network.http.pipelining.maxrequests
4
network.http.proxy.keep-alive
true
network.http.proxy.pipelining
true
places.database.lastMaintenance
1356096374
places.history.expiration.transient_current_max_pages
104858
places.history.expiration.transient_optimal_database_size
157980999
places.last_vacuum
1322520671
plugin.disable_full_page_plugin_for_types
audio/AMR
print.print_printer
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_bgcolor
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_edge_left
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_footercenter
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_margin_top
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_shrink_to_fit
true
print.printer_\\DANIT-PC\Lexmark_7300_Series.print_to_file
false
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_unwriteable_margin_left
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_unwriteable_margin_right
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print.printer_\\DANIT-PC\Lexmark_7300_Series.print_unwriteable_margin_top
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privacy.cpd.formdata
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privacy.cpd.offlineApps
true
privacy.cpd.sessions
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privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.disable_button.openCertManager
false
security.warn_viewing_mixed
false
Graphics
Adapter Description
NVIDIA GeForce GT 220
Vendor ID
0x10de
Device ID
0x0a20
Adapter RAM
1024
Adapter Drivers
nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Driver Version
9.18.13.697
Driver Date
10-2-2012
Direct2D Enabled
true
DirectWrite Enabled
true (6.1.7601.17789)
ClearType Parameters
ClearType parameters not found
WebGL Renderer
Google Inc. -- ANGLE (NVIDIA GeForce GT 220 ) -- OpenGL ES 2.0 (ANGLE 1.0.0.1242)
GPU Accelerated Windows
2/3 Direct3D 10
AzureCanvasBackend
direct2d
AzureFallbackCanvasBackend
cairo
AzureContentBackend
direct2d
JavaScript
Incremental GC
1
Accessibility
Activated
0
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.2
4.9.2
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

Tyler Downer
  • Top 25 Contributor
  • Administrator
  • Moderator
1226 solutions 8030 answers

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.'' To Reset Firefox do the following: #Go to Firefox > Help > Troubleshooting Information. #Click the "Reset Firefox" button. #Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish. #Firefox will open with all factory defaults applied. Further information can be found in the [[Reset Firefox – easily fix most problems]] article. Did this fix your problems? Please report back to us!

Question owner

I'm afraid it didn't... I tried it first thing after I reset Firefox and it didn't do anything. Thanks for the help though :)

Also, I think it might be worth mentioning that embedded youtube videos work on other browsers, so i'm guessing I installed an extension or something of the sort that disabled it on firefox...

I'm afraid it didn't... I tried it first thing after I reset Firefox and it didn't do anything. Thanks for the help though :) Also, I think it might be worth mentioning that embedded youtube videos work on other browsers, so i'm guessing I installed an extension or something of the sort that disabled it on firefox...
serpicolugnut 0 solutions 2 answers

I'm having a similiar issue. We've narrowed it down to Firefox 18 (though we've seen it sporadically on versions 16, 17) and only on Windows (on Vista, 7 & 8 - not sure about XP).

The issue is that some embedded YouTube clips will not load. When the page loads, all you see is a black box.

In some instances, reloading the page will finally get the video to load.

Here's a URL that seems to demonstrate the issue:

http://extramustard.si.com/2013/01/31/beyonce-sings-natioanl-anthem-at-super-bowl-press-conference/

I'm having a similiar issue. We've narrowed it down to Firefox 18 (though we've seen it sporadically on versions 16, 17) and only on Windows (on Vista, 7 & 8 - not sure about XP). The issue is that some embedded YouTube clips will not load. When the page loads, all you see is a black box. In some instances, reloading the page will finally get the video to load. Here's a URL that seems to demonstrate the issue: http://extramustard.si.com/2013/01/31/beyonce-sings-natioanl-anthem-at-super-bowl-press-conference/
serpicolugnut 0 solutions 2 answers

Also, I tested the following builds and here's the status of whether the exhibit the behavior or not:

Firefox 16.01: Works fine. Firefox 16.02 Works fine. Firefox 17: Does not play Firefox 18: Does not play. Firefox 19: Does not play. Latest nightly build: Does not play.

Also, I tested the following builds and here's the status of whether the exhibit the behavior or not: Firefox 16.01: Works fine. Firefox 16.02 Works fine. Firefox 17: Does not play Firefox 18: Does not play. Firefox 19: Does not play. Latest nightly build: Does not play.
cor-el
  • Top 10 Contributor
  • Moderator
12311 solutions 113979 answers

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

Also check that you aren't blocking cookies.

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Note that a reset imports cookies, so isn't really suited if cookie issues are a possible cause, unless you clear the cookies.

Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance). *Do NOT click the Reset button on the Safe mode start window or otherwise make changes. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes ---- Also check that you aren't blocking cookies. *https://support.mozilla.org/kb/Cookies *http://kb.mozillazine.org/Cookies Clear the cache and the cookies from sites that cause problems. "Clear the Cache": *Tools > Options > Advanced > Network > Cached Web Content: "Clear Now" "Remove Cookies" from sites causing problems: *Tools > Options > Privacy > Cookies: "Show Cookies" Note that a reset imports cookies, so isn't really suited if cookie issues are a possible cause, unless you clear the cookies.

Modified by cor-el

heatwaveo8 0 solutions 1 answers

This issue may arise if you are trying to use the object or embed elements to play the video. The best way to do this cross-browser, and the current recommendation by Google, is to use an iframe.

An example for embedding playlists:

<iframe src='http://www.youtube.com/embed/videoseries?list=PLFE11CE11D5EA7D87' allowfullscreen frameborder='0'></iframe>

An example for embedding a single video:

<iframe src='http://www.youtube.com/embed/C6WKYAZXlCA?modestbranding=1&rel=0' allowfullscreen frameborder='0' ></iframe>

This issue may arise if you are trying to use the object or embed elements to play the video. The best way to do this cross-browser, and the current recommendation by Google, is to use an iframe. An example for embedding playlists: <iframe src='http://www.youtube.com/embed/videoseries?list=PLFE11CE11D5EA7D87' allowfullscreen frameborder='0'></iframe> An example for embedding a single video: <iframe src='http://www.youtube.com/embed/C6WKYAZXlCA?modestbranding=1&amp;rel=0' allowfullscreen frameborder='0' ></iframe>

Chosen Solution

well, what solved it eventually was clearing cookies somehow I skipped that step during the time I spent figuring it out Thanks anyway everybody!

well, what solved it eventually was clearing cookies somehow I skipped that step during the time I spent figuring it out Thanks anyway everybody!