update won't play youtube videos

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• Why the latest Firefox won't play YouTube videos

  Everything worked fine until the latest version of Firefox, now I can't play YouTube videos. No problem with Chrome or IE. Firefox screwed up something with their latest version. Problem started on 09/03/15.

  1) enter the config by typing about: config in the address bar.
  (2) enter media.mediasource.webm.enabled press ENTER.
  (3) make a right click on it and change to true, for some reason any, defined as 'false', which makes the MSE & WebM VP9 does not work correctly.
  (4) visit: https://www.youtube.com/html5 and check that everything is OK.
  (5) tries to watch a video. It should work now.

• Firefox 7 won't play YouTube videos

  Running Win7 x 64. Upgrade to Firefox 7, then YouTube videos stopped playing. YouTube keeps insisting that I have to install the latest flash player, what I've done several times ("install_flashplayer10_mssa_aih.exe" and "install_flashplayer11x64_mssa_aih" versions), clear cookies, restart and all that crap. Firefox refuses to play YouTube videos. Internet Explorer 9 (x 64) plays great YouTube videos. Don't use Firefox more. You've got to SUPPORT your application instead of users leaving Wade. It is also why I HATE the upgrade. It causes too often new incompatibilities when I just want to leave what works, the hell alone.

  The Adobe forum, someone suggested

     * go to http://forums.adobe.com/thread/909550 and
           o download the 64-bit uninstaller
           o download the 64-bit installer
     * close all browser windows, then run the downloaded uninstaller
     * restart Windows
     * delete any remaining files in
           o C:\Windows\system32\Macromed\Flash
           o C:\Windows\syswow64\Macromed\Flash
     * now run the downloaded installer
  

  It still does not work. Then someone else said to install the ActiveX Installer, I found somewhere online.

  THEN finally it worked. But I still don't understand why I have to jump through additional hoops, which are not explained in the first place-YT says I need to upgrade (even if my old machine W2k with FF 3 and Flash 10 works fine), I click on the link on YT taking me to Adobe, I download and install like lead instructions , but it does not work. Why didn't ActiveX installs as well as the installer of Flash if necessary?

• V27, 27.1, won't play YouTube videos. Even in safe mode

  I can't watch videos on my default browser, the latest Firefox v 27. I think that I am not alone in this.

  I do not have the latest versions of Flash Player, Real Player, and Javascript is enabled (not java)

  I found it first in the videos of my favorite site of cats (cheezeburger..), but I just find that it comes up with videos of Serif community more. Video accessed via FP work, even when the so-called YouTube (clicked)

  Work live YouTube videos, but not the videos of YouTube accessible via cheezburger links.

  These defects occur only in Firefox 27 and videos play OK in Maxthon 3, (Chrome and Opera - the last time I checked). I know that you do not recommend this but can tell you exactly how to reload the previous version of Firefox, V26 - I had no problem with that.

  I tried to run FF27 in safe mode, no effect. I don't want to lose the different add-ins I use, if I don't want to reset to the factory settings.

  I think is not necessary.

  Click with the mouse right button on the Bookmarks box or in the bar (press F10 or alt to see the title bar) title, and then click Customize

  Then drag the address located above the tabs of stripe bar and.

  • Customize toolbars

  Go to Subject: config search browser.tabs.closeWindowWithLastTab change itsvalue false

  • Subject: config

• El capitan Safari won't play YouTube videos

  When I fall on a You Tube video on a Mac, or go site directly on YouTube, the videos are empty (black) with massage

  «Your browser does not currently recognize the video formats available.»  Click here to visit our frequently asked questions about HTML 5 video. »

  

  The next page said: supported browsers include Apple Safari.

  

  What Miss me?

  Thank you for using communities of Apple support, Cosman.

  Your post, Safari will play is no longer videos using Safari on your MacBook Pro on OS X 10.11. It also seems that it is a recent development, so we'll get it working again.

  Install and manage extensions Safari on your Mac - sometimes an extension may be the culprit. Disable the extensions you have installed for Safari, quit Safari and test. If it works again, turn on an extension at the same time, then exit and restart Safari to find what the cause of the problem.

  Update the software on your Mac - Make sure that your Mac is up = to = date with everything.

  Try safe mode if your Mac does not start -even if the start up your Mac, safe mode will not fail it starts successfully.

  I hope this helps!

• Safari Version 10.0 (11602.1.50.0.10) won't play YouTube videos.

  New version of Safari (Version 10.0 (11602.1.50.0.10) will not play videos from YouTube.) I get a message saying that Safari does not support any video format.

  Safari > Preferences > Extensions

  Uncheck the boxes next to all extensions and test them.

  Enable the extensions one by one and test.

  To uninstall an extension, select it and click the "Uninstall" button

  Click here for the extension plug can cause this kind of problem.

• I can't play youtube videos or access games on facebook

  I can't play youtube videos or access games on facebook and some websites, I get only 1/2 the page. It seems that something is blocking my flash. It says that my flash is updated and also of shockwave. I have included 2 screenshots. I started in safe mode and nothing works. Works perfectly in google chrome. The problem is that firefox. Any ideas?
  http://i431.Photobucket.com/albums/qq36/otter2208/YouTube.jpg
  http://i431.Photobucket.com/albums/qq36/otter2208/face-1.jpg
  I goto my plugins and see shockwave flash only. Also, I tried other sites with video and video shoot at all.

  I tried to download an old version, but it would not move for some reason any. I did a system restore and now everything works. I have firefox WILL NOT update until THAT can't solve their problems.

• Whenever I play youtube videos, they shake from left to right and to go at different speeds.

  I have windows 7. A couple of days, I went to play youtube videos and they all shake from left to right and go at different speeds (very erratic). This ONLY happens with videos from youtube (HTML5). When I play other videos(non-HTML5), they play very well. Also, the sound on youtube videos are fine, only they do not match the mouth (s) of people talking. The mouth move faster. I've checked all my plug-ins and everything is up-to-date. My firefox browser is also the last version. I did a malwarebytes scan and it came up with nothing. All the settings on the youtube videos are also where they should be. It happened for about 5 days. Can someone help me?

  Thanks Guigs. I followed your instructions and found out it was a 'acceleration hardware problem' that was the origin of the problem. I unchecked the box and YouTube videos play very well! Thank you for taking the time to help me.

• Why I can't play youtube videos?

  When I try to play youtube videos it is not play and it gives out message lik e "year error occurred, please try again later." but when I play the same thing on chrome, it worked, I installed the flash player lasted, but still I get this error please help me.

  Reload the Web page while bypassing the cache

  • Hold down the SHIFT key and click the reload with a left click button.
  • Press Ctrl + F5 or Ctrl + SHIFT + R (Windows and Linux)
  • Press command + SHIFT + R (Mac)

  Clear the cache and cookies from sites that cause problems.

  Clear the Cache: Tools > Options > advanced > network > storage (Cache) offline: 'clear now '.

  Remove the Cookies from sites causing problems:

  • Tools > Options > privacy > Cookies: "show the Cookies".

• Cannot play youtube videos unless on youtube.

  Recently my system seems to not being able to play youtube videos, at least on youtube. any other site that the video can be integrated into it just lies at 00:00 on the loading of the file. I've tried disableing all the addons. and videos refuse even to load or be played unless I came to youtube to do.

  Clear the cache and cookies from sites that cause problems.

  "Clear the Cache":

  • Tools > Options > advanced > network > content caching Web: 'clear now '.

  'Delete Cookies' sites causing problems:

  • Tools > Options > privacy > Cookies: "show the Cookies".

  Start Firefox in Safe Mode to check if one of the extensions (Firefox/tools > Modules > Extensions) or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox/tools > Modules > appearance).

  • Do not click on the reset button on the start safe mode window or make changes.
  • https://support.Mozilla.org/KB/safe+mode
  • https://support.Mozilla.org/KB/troubleshooting+extensions+and+themes

• I can't play YouTube videos, or open Flash on Firefox-based pages. I have already installed the plugin Flash a number of times.

  Can't play YouTube videos and cannot load Flash components, which work on other browsers.

  There are some compatibility issues between the last Flash drive and a few Add-ons Firefox or settings. Could see you if anything in this article helps you: 11.3 Flash does not load video in Firefox.

• Safari 6.1.1 does not play youtube videos. Can someone help me please? Problem started today.

  Hello

  Today my MBP, Safari 6.1.1. stop playing youtube videos. YouTube says safari is obsolete. What should I do? Thank you.

  Upgrade the operating system to a newer version or try another browser that is out of date.

  Firefox

  Opera browser

• Firefox plays Youtube videos not, please help?

  Simple question, yet nothing I've tried has worked. The video is just a black rectangle on the page. It happens with all the videos on Youtube.

  I had version 12 of Firefox and it has not worked, put at 13, still does not. I do not have real player installed, I downgraded Flash 10 something points, disabled the flash Shockwave and still they won't play! SE ticked off and sick of having to use IE.

  Someone help me please?

  Start Firefox 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 > Modules > appearance/themes).

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

  Try disabling hardware acceleration in Firefox.

  • Tools > Options > advanced > General > Browsing: "use hardware acceleration when available.
  • https://hacks.Mozilla.org/2010/09/hardware-acceleration/
  • https://support.Mozilla.org/KB/how-do-i-upgrade-my-graphics-drivers

  Try to "disable hardware acceleration" in the Flash Player.

  • http://helpx.Adobe.com/Flash-Player/KB/video-playback-issues.html

  See also:

  • https://support.Mozilla.org/KB/keep-Flash-up-to-date-and-troubleshoot-problems

  Blink the window "display settings":

  • http://www.Macromedia.com/support/documentation/en/flashplayer/help/help01.html

• Firefox can't play youtube videos (only from youtube, other video sites work well)

  Since about a week ago firefox in my laptop can not read the youtube videos (only from youtube, videos from other sites and flash games work well), both on the site or embedded on another site. This shows only "an error has occurred. "Please try again later".
  I use firefox 13.0.1 and the latest version of the flash plugin.
  My laptop is i5 with win7 64 bit and it has clean, no viruses or malware.

  I tried all the solution posted here, but nothing works.
  I tried to uninstall - reinstall both firefox and flash, disabled add-ons, safemode, downgrade from earlier, flash, uninstall realplayer, changed the dns, reconfigured my modem, my curse what ISP (perhaps connection related?), still unable to play videos from youtube.

  I tried to use different computer, I used my old pc winxp with the old version of firefox (with the same configuration as the firefox I use in my laptop) and my ipad, they can play videos, but playback is stuttering which never happened before.
  Curiously, I've tried chrome (on the same laptop) and it works well, no stutters.
  This problem has something to do with the firefox updates, updates, flash, both, or something else?

  Please help me, I don't want to go back and forth between browsers just to see the video on youtube and I really want to change browser.
  Thank you!

  It's very strange... it will also be a very long shot, but it is possible that due to the long url (& feature = relmfu) it worked. I highly doubt this is the case.

  I recommend not to clear your cookies, either of them or one of them to youtube.

  And you've probably already tried this, but playing the video on the various quality parameters may do something.

  And finally, have you tried to contact youtube/google on this subject, or restart your pc after making sure that all your stuff is up-to-date? (you have probably both)

• Why is 1/2 on the sceen blacked out when I play youtube videos

  1/2 OF THE SCREEN IS BLACKED OUT ON YOU-TUBE VIDEOS

  IT SHOWS THAT 1/2 OF THE VIDEO, THE OTHER 1/2 IS BLACKED OUT

  IT IS CUT RIGHT DOWN THE MIDDLE OF THE SCREEN

  I DON'T SEE THAT 1/2 OF THE VIDEO

  Hello

  1. have you made changes on the computer recently?
  2. what Internet browser do you use?

  Method 1.
  Try to play another video on youtube and check.

   
  Method 2.
  Given that most online videos require Adobe flash to work I suggest you install Adobe Flash player in Internet Explorer.
  I recommend you update Adobe flash player on the website below:
  http://get.Adobe.com/flashplayer/
  I hope this helps.