How to enable firefox to support H.264 and MSE & WebM VP9 on Windows Server 2008 R2 that is affecting your YouTube video playback.
I have been having intermittent issues with video playback on sites like Facebook and YouTube. Videos would either play without sound or they will not be able to load when clicked. Embedded video on some website site also suffers the same issue once in a while. I used to be able to live with this issue as I only encounter them once in a while. But recently, there are more and more videos that will not play on my firefox browser. Finally, I have had enough of the nonsense and decide to fix the problem once and for all. This is one of the issues with the YouTube videos on my firefox browser. The video just will not play. You can go to this link on your firefox browser to test your HTML5 supportability https://www.youtube.com/html5 As you can see from my screen shot, there’s an issue with the H.264 and MSE & WebM VP9 on my Firefox browser. This is the version of my firefox browser at the time I am debugging this. After lots of research, tes...