If you are using the Firefox browser and not seeing a video, or having any video play issues or problems while using the Firefox browser...
Please note:
Firefox has some known issues.
We recommend watching CC videos on another browser like Chrome, Safari, IE, Opera, Silk, Etc...
We like Chrome the best!
Test playing a video with the latest version of Chrome to see if you have the same issue? If the video plays properly on Chrome, you will know it is a problem with Firefox.