IIRC, the iPhone version is H.264, but at a lower bitrate, so they have 3-4 h.264 files per video: * 720p version for hdtv videos * 480p version for non hd

IIRC, the iPhone version is H.264, but at a lower bitrate, so they have 3-4 h.264 files per video: * 720p version for hdtv videos * 480p version for non hd web viewing * High bitrate version for iPhone streaming on wifi * Low bitrate version for iPhone streaming on 3g or edge.