Flash to get H.264 support soon →
https://marco.org/2007/08/21/flash-to-get-h-264-support-soon
This is a huge deal for internet video. Non-geek translation: the existing Flash video format is old and crusty, and it’s about to be replaced by an awesome new format that will offer much higher quality and faster playback on recent computers. This means much better video quality on YouTube, Vimeo, and anywhere else on the web that embeds Flash video - and the files can be smaller, meaning faster downloads and cheaper hosting.