With experimental H.264/AAC/MP3 support.
Now here is a nice update for you. It looks like just recently, Mozilla was debating whether or not to continue supporting the H.264 codec. Now, the open source organization has pushed a new batch of Firefox nightly builds that will make at least some of its users happy. Why? Well, it has enabled a support for playing H.264/AAC in MP4 and MP3 audio files in HTML5 video and audio tags by default on Windows machines.
On a side note, Mozilla has also said that we will only see H.264/AAC/MP3 support on Windows in Firefox 22, which is set for June 25 release, rather than Firefox 21.
Firefox 21 Alpha
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Vygantas is a former web designer whose projects are used by companies such as AMD, NVIDIA and departed Westood Studios. Being passionate about software, Vygantas began his journalism carrier back in 2007 when he founded FavBrowser.com. Having said that, he is also an adrenaline junkie who enjoys good books, fitness activities and Forex trading.