Firefox 33 Arrives With OpenH264 Support
An anonymous reader writes: Mozilla today officially launched Firefox 33 for Windows, Mac, Linux, and Android. Additions include OpenH264 support as well as the ability to send video content from webpages to a second screen. Firefox 33 for the desktop is available for download now on Firefox.com, and all existing users should be able to upgrade to it automatically. As always, the Android version is trickling out slowly on Google Play. Full changelogs are available here: desktop and Android."
At least for as long as Cisco is willing to pay maximum royalties to MPEGLA, and as long as you are willing to pay royalties to MPEGLA, and you bought properly licensed h.264 encoders, and you made sure not to shoot commercial video on consumer grade cameras (which don't come with commercial MPEGLA licenses), etc...
The weakest link is Cisco - MPEGLA is most certainly going to look towards raising that h.264 cap in the coming years, and the only reason why Firefox can support h.264 is because it's Cisco's binaries. I'm assuming you remembered to get your MPEGLA royalties in order, or at the very least you are distributing non-commercial video and are hoping that MPEGLA continues their moratorium on royalties for non-commercial internet video.
Or you can just use WebM, and not pay anyone. But then you don't play on IE or Safari, because Apple and Microsoft have been ardently against royalty-free video formats for various reasons. (Microsoft because they think MPEGLA is indestructible; Apple because they don't want to put hardware WebM decoders on their phones)