Here is my screen shots

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.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

You can check for problems caused by recent Flash updates and try these:

• disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
• disable protected mode in Flash 11.3 and later
• disable hardware acceleration in the Flash plugin

• http://kb.mozillazine.org/Flash#Troubleshooting

If i restart firefox in safe mode it works. The video works and plays but what should i do if i want to play video in normal mode? is this a problem with the flash player? if it is then how do i fix it?

If the problem goes away in Firefox Safe Mode, its probably caused by one of your extensions. See:

• Fix common audio and video issues ... under "Other solutions" - Disable interfering extensions or ad-blocking software
• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems