Videos no longer play in Firefox

Similar Questions

• MP4 video does not play in Firefox 35.0.1

  Some of my MP4 videos do not play in Firefox. They worked very well last week. Now, I get the message "Video cannot be played because the file is corrupted. The video works fine in IE, Chrome, Opera, Safari

  I use Firefox with 4 profiles. One of them had problem work mp4. When I opened http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4 mp4 it says "Video cannot be played because the file is corrupted.".

  After I compared the two profiles prefs.js files, I saw that "media - media.windows - foundation.enabled" was false. I opened Subject: config and reset "media.windows - media - foundation.enabled. After restarting Firefox http://www.quirksmode.org/html5/videos/big_buck_bunny.mp4 works perfectly.

• NFL videos don't play in FireFox, but will be in IE

  When I try to play a video from the websites of the NFL, all I get is a blank video display. Everything around him is, but there is no video. He played in IE9. I right click on the video in IE9, and he states that he uses NFLVideoPlayer 3.5 Build e930502. FireFox supports this video? How can I make it work?

  I had the same problem, the only site that wouldn't play videos was vikings.com
  Figured out finally that it was the donottrack plugin. Disabled and can now watch videos on vikings.com.Hope this help, it took me months to track him. Craig

• Integrated video will not play in Firefox

  I have a youtube video embedded on a Web site. When played in IE it is fine, but when played in Firefox the entire page is replaced by this error:
  
  " Not found".
  "" The URL requested / embed src = ' http://www.youtube.com/v/F6ADdUEJJ_E ' type = "application/x-shockwave-flash" wmode = "transparent" width = "425" height = "350" > < / embed > < / object > is not found on this server.
  
  Additionally, a 404 not found error was encountered while trying to use an ErrorDocument directive to manage demand. "
  
  I have the latest shock for FF installed on my pc (10.x) wave and I said that's not just my FF which he hangs in.
  
  Here is the link to the video: www.bmxradio.com/multimedia.html
  
  Here's the code I used in Dreamweaver:
  
  
  < p align = "left" > < a href = "embed src = & quot; http://www.YouTube.com/v/F6ADdUEJJ_E & quot; Type = & quot; application/x-shockwave-flash & quot; wmode = & quot; transparent & quot; width = & quot; 425 & quot; height = & quot; 350 & quot; & gt; & lt; / embed & gt; & lt; / object & gt; ">
  
  "< object width ="425"height ="350"> < param name ="movie"value =" http://www.youtube.com/v/F6ADdUEJJ_E "> < / param > < param name = value 'wmode', 'transparent' = ' > < / param > < embed src =" " http://www.youtube.com/v/F6ADdUEJJ_E" width = "425" height = "350" type = "application/x-shockwave-flash" wmode = "transparent" film =" http://www.youtube.com/v/F6ADdUEJJ_E" > < / embed > < / object >
  
  
  Any ideas?

  Problem solved. What fixed it:

• Why the videos will not play in Firefox?

  Videos on the YouTube sites and new will not play. Everything worked last night. This afternoon no videos don't play. I tried the update of Real Player plug-ins, re - install Real Player, install QuickTime, QuickTime plug-ins verification, etc. Nothing works.

  I have uninstall Realplayer and it works now. RealPlayer has been blocklisted by Flash.

• From 04/01/14, Instagram videos no longer play in my Firefox. They work fine in Safari and Chrome, but not ff.

  I have problems playing videos Instagram in Firefox before 04/01/14. I've updated all my plug ins, turned off AdBlock, but nothing does.

  Firefox does not make to forget this process of Site, and I had to force quit. I tried 3 times, and then I went in the cookies and remove all the cookies just instagram. Once I did, I could see the videos again in Firefox. I never really thought that something as simple as this clear up the question.

  Thanks to everyone for their help!

• YouTube videos no longer play

  I recently installed the latest versions of Firefox and Adobe Flash Player ActiveX.

  Now I get the familiar message of youtube:

  An error has occurred, please try again later. To learn more

  whenever trying to view youtube videos in Firefox.

  Chrome still works fine.

  ActiveX object, I mentioned that his update was a coincidence with the cessation of the YouTube videos to play.

  Clear the cache of the browser and plugin (right click on the drive, select global settings and clear storage. Increase the storage for the player. Try disabling graphics hardware acceleration. As this feature has been added to Firefox, it has gradually improved, but there are still some problems.
  None of this works.

  In the list of parameters, you should find it use hardware acceleration when it is available checkbox. Clear this check box.
  There is no this box at this location for Firefox v.34, the current version.

  FYI, here is what works:
  Disable an add-on called Firefox "Centre 2.1.0 YouTube"
  Videos YouTube began to play again. He had a hassle in YouTube journaling, what with google requiring the use of his account of the owner.
  So you can mark this "resolved"!-)

• Video will not play in firefox

  I downloaded the latest versions of firefox and flash, but can't watch youtube or any other video online. YouTube offers an error message. He used just play automatically, but now I have to click on the play button, then error message. I've also updated quicktime and realplayer recently as well. I can see no problem with IE9, and I don't know what the problem is. Any help is appreciated!

  If you can't Flash 11.3 to work and need to return to 11.2 Flash you can download Player Flash 11.2 through this direct link:

  • http://fpdownload.Macromedia.com/pub/flashplayer/Current/Licensing/Win/install_flash_player_11_plugin_32bit.exe

• I've recently updated shockwave and now videos will not play in firefox, it says that the addon stopped working

  Can you tell me which version of shockwave, I should have and how to upgrade to make it work correctly

  The videos are often in formats other than just that Flash Player provides. The majority of Firefox users use FlashPlayer. There are still a lot of content that need unfortunately, so it depends on what you're trying to watch.

• New and other history videos will not play in Firefox for java, adobe and Yahoo v20.0.1 are underway. All I get is a circle that circulate, videoes work very well in IE9.

  All plug-ins are up-to-date and current, have disabled and checked for problem of plug-ins with no result. I've uninstalled and reinstalled Firefox, Java, Adobe Flash Player, Real Player, several times with no results. Also uninstalled my software antivirus temporarily without any result.

  Problem solved! I downloaded and installed Firefox 24.0 Beta. Apparently Mozilla team programming carried out all the changes right in the new version. Now all the videos from Yahoo and BBC working.

  Link: http://www.mozilla.org/en-US/firefox/channel/#beta

• A page of video coverage not play, but in other browsers FIXED

  I just upgraded to Joomla 1.5 and 1.7; the cover page of current video will not play in Firefox, but it DOES not play in Chrome and IE. There are other videos in the same format that play in all browsers. Homepage is www.yaim.org - you can see the video. Sample of one who plays is here: http://www.yaim.org/web/index.php?option=com_content & view = article & id = 219:july162011 & catid = 15 & Itemid = 356
  Help, please. Thank you, DJ

  Has made this change video or is it always the same video on this homepage?

  If it happens again then the first to try is to reload webpages and ignore the cache.

  • Hold SHIFT and click reload.
  • Press 'Ctrl + F5' or 'Ctrl + Shift + R' (Windows, Linux)
  • Press 'Cmd + Shift + R' (MAC)

• No youtube videos play in Firefox, but I can play them using Safari and I have made no change in my system.

  On November 29, 2012, I could no longer play youtube videos in Firefox. They play well in Safari. I have made no change in my system, Flash is up to date (and has been; this has not changed), and RealPlayer is not active. What can I do to fix this? One minute, he was working; the other, it wasn't.

  I have only one computer.

  I have reset Firefox instead of making the diagnosis, which seems to have solved this problem, but now I have more Ad Block Plus. I can't wait to see what I have to do to get Firefox the way it worked before.

  Thank you.

• After the last update of Firefox, youtube videos do not play. The answers I've found are not relevant or too complicated.

  After the last update of Firefox, youtube videos do not play. The answers I've found are not relevant or too complicated.

  Hi Cbella, YouTube is generally used with an HTML5 player, who is a player who does not use a plugin video in MP4 format (for example, it does not use the Flash plugin).

  Now, I based this assertion on Windows, Mac may vary.

  Could you do two tests for me?

  Test #1:

  To verify which player you see (which does work), try a right click or Ctrl + click on the YouTube Player and check the "context menu" that rises. If it's the Flash, there will be a menu short, referring to the Flash on the last line. If you do not see that, if you get a regular menu of Firefox, it's probably the HTML5 player.

  Are what player you?

  Test #2:

  If you open the following test page, which videos to play?

  http://www.quirksmode.org/HTML5/tests/video.html

  • The video "H.264/MP4" play?
  • The video "WebM" play?

  Thank you.

  Also, you can check if your Flash plugin is up to date? You can use the site Mozilla Plugin check for this (please ignore the other plug-ins page wants you to update at the moment avoid making the situation more complicated):

  https://www.Mozilla.org/pluginCheck/

• I have firefox 13 and 15 but realplayer download this video option does not work, extensions to save plugin is disabled, if no videos do not play in youtube

  I have Firefox 13 and real player 15, but the download this video option does not work, under extensions to save browser plugin is disabled, but if active videos do not play in youtube, error occurs, it's major drawback, it works well with IE, but I prefer Firefox so any help to rectify the issue is appreciated.

  One possibility is to upgrade to Flash 11.2 and re - activate the Plugin RealPlayer browser Record extension in the Add-ons Manager (Tools > Modules > Extensions) (it's a softblock).

  If you need to return to 11.2 Flash you can download Player Flash 11.2 through this direct link:

  • http://fpdownload.Macromedia.com/pub/flashplayer/Current/Licensing/Win/install_flash_player_11_plugin_32bit.exe

  You must uninstall version 11.3 Flash.

  • http://helpx.Adobe.com/Flash-Player/KB/uninstall-Flash-Player-Windows.html

• YouTube videos online, such as the weather channel or utube, will not play on Firefox. They play well on Internet Explorer, so I guess it's a problem with Firefox.

  Flash player is up-to-date, and Firefox is the latest version. However, no videos will play on Firefox. They worked fine until recently. We used to watch the videos offered on the weather channel, but the screen is black. When I click on the play button, nothing happens.

  Start Firefox in Firefox to solve the issues in Safe Mode to check if one of the extensions or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > appearance/themes).

  • Makes no changes on the start safe mode window.
  • https://support.Mozilla.com/kb/safe+mode
  • https://support.Mozilla.com/kb/troubleshooting+extensions+and+themes