I thought it was a little odd that the Apple press release concerning the YouTube addition to Apple TV stated that it would take weeks for all YouTube content to be made available on the Apple TV. iLounge got to the bottom of this slightly odd situation (or so it seemed without explanation). They spoke with Apple Vice President of Worldwide Mac Hardware Marketing David Moody who explained the delay. It would seem that all YouTube's videos are in the process of being converted to H.264, a codec that Apple TV supports. All new videos will be converted to H.264 as they are uploaded, but it will take some time to convert the back catalog.