If you have problems with current Shockwave Flash plugin versions then check this: * see if there are updates for your graphics drive drivers '''https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration''' * disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later) '''https://forums.adobe.com/message/4468493#TemporaryWorkaround''' * disable hardware acceleration in the Flash plugin '''https://forums.adobe.com/thread/891337''' See also: * '''http://kb.mozillazine.org/Flash#Troubleshooting''' -------------------------------- '''http://kb.mozillazine.org/Error_loading_websites''' '''https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster''' '''https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix''' '''https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding''' https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues?redirectlocale=en-US&redirectslug=Video+or+audio+does+not+play https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues

I have tried these suggestions and none of them solved my problem.

Is this with the Flash player or with the HTML5 media player that YouTube might be using by default in current Firefox releases. *http://www.youtube.com/html5

I have tried using both the Flash player and the HTML5 player and both have the same issues. In fact, the Flash player will often not even load a video at all.

Just as a test, try downloading one of the files. Just to make sure the problem is the player.

Which files are you talking about, Fred?

The clip you are trying to watch. If it downloads, then that shows the problem is not the clip itself. On the other hand''' . . . .'''

I just downloaded a video and it played no problem.

Bump.

Can anyone help me? If not, I'm just going to use Chrome.