Flash supports H.264 (Mainconcept) + HE-AAC

[mcka]

Hi!

Adobe has licensed Mainconcept H.264 codec to play H.264 videos using Flash Player 9.

http://www.readwriteweb.com/archives/adobe_flash_player_moviestar_h264.php
http://www.broadcastbuyer.tv/publish/Partnerships_amp_Alliances_48/MainConcept_Licenses_Core_Codec_Technologies_To_Adobe_For_Adobe_Flash_Player_12752.shtml

beta should be available today: http://labs.adobe.com/

regards
mcka