Mozilla Plans H.264 Video for Desktop Firefox
“There’s still no support for H.264 in the current desktop version of Firefox, but as Mozilla CTO, Brendan Eich recently noted on his blog, work is under way and, with the exception of Windows XP, all platforms will get OS-native codec support for H.264 video. Windows XP, which lacks OS-level tools for H.264, will continue to use the Flash plugin to play H.264 movies.”
