Cannot play flash videos in Firefox

I am unable to play content flash facebook or CNN video. I use Firefox 31 and Flash 14.0.0.179 (32-bit) running Windows 7 Pro. I also have the 64-bit version installed for use with internet explore. These videos play fine in internet explorer but not in Firefox. Videos CNN stopped play in Firefox months ago and Facebook stopped in recent days.

I started Firefox in safe mode, reset Firefox, uninstalled and reinstalled flash and uninstalled and reinstalled the latest version of realplayer (found this suggestion online). So far, nothing worked.

Just CNN videos freeze once the Player control bar appears at the bottom of the frame. Advertising plays, but it hangs at the start of the video of actual news.

Facebook displays the thumbnail for the video (no AutoPlay as it does in IE will) and when you click it you get the pop-up window with the user comments for the right, but just a black square where has to play the video.

If I right click and go to settings for flash, when I click on disable hardware acceleration, it reactivates it as soon as I click on close on the setting screen. When I return to the parameters of the box is checked again.

Accidents or other problems with some multimedia content in Firefox (for example, videos from Youtube and Flash animations or games) can often be solved by doing as in these Knowledge Base articles:

On Windows Vista and above all, you can disable protected Flash mode by following the instructions on these pages:

(See this blog post Adobe for more technical details on protected mode Flash.)

Please tell us if it helped!

Tags: Firefox

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