According to http://lists.mplayerhq.hu/pipermail/ffmpeg-user/2007-December/012802.html the Fast Start thingie isn’t needed any more…
> Search the net for NicMP4Box.ese and take the ffmpeg h264 file and run
> it through the program. It adjusts the stream by adding a iTunes
> required uuid atom.the atom is nolonger needed in itunes versions since 7.4.2. tested with both ipod and ipod touch, and iphone very soon 🙂