Earlier this week, Apple announced that YouTube.com videos would become available on the Apple TV after a software update that will be made available in June.

iLounge spoke with Apple’s Vice President of Worldwide Mac Hardware Marketing, David Moody, who provided more details about this upgrade.

According to Moody, not all of the Youtube catalog will be available on day one. Instead, “thousands of videos designed for Apple TV” will be available at launch, but that the remainder will become available by the fall. The reason for the delay is that Youtube will be encoding all of their videos into a “H.264 streaming-efficient compression format” specifically for the Apple TV. All of Youtube’s videos are currently encoded in Flash Video (FLV) format.

While no official reason is given for the mass transcoding of Youtube’s entire catalog, Macformat.co.uk believes it has to do with the iPhone.

As far as I know even now, Flash content per se might not play on the iPhone from day one. But Apple clearly doesn’t – indeed, shouldn’t – care, as YouTube is for many people the most critical site that uses Flash.

Indeed, both the iPod and iPhone can play H.264 encoded video, and so it seems the entire Youtube catalog may also become available to those devices later this year.

In an early iPhone FAQ, Jobs described this exact scenario:
Markoff: “Flash?”
Jobs: “Well, you might see that.”
Markoff: “What about YouTube–”
Jobs: “Yeah, YouTube—of course. But you don’t need to have Flash to show YouTube. All you need to do is deal with YouTube. And plus, we could get ‘em to up their video resolution at the same time, by using h.264 instead of the old codec.”

We know that it’s a bit tired to compare every single new DAP that hits the market to one of Apple’s babies, but one look at the screenless, postage-stamp-sized Zen Stone is all it takes to discover where Creative got the design inspiration for its latest player. At 18.3 grams, the Stone is slightly heavier than the 2G shuffle — it seems Creative was more concerned with keeping prices low than weight down, as the 1GB, clip-equipped player will retail for just $40 when it hits shelves on the 14th. Different colors and skins allow for some degree of personalization, and the claimed 10-hour battery life should help you get through most of the 250 or so songs you’ll be able to store on the non-expandable memory. Doesn’t look like we’ve got an iPod-killer here, but with accessories such as the TravelSound Zen Stone dock going for only 40 bucks as well, Creative’s latest “me-too” will likely fall into a comfortable niche.