Up until recently, embedded YouTube videos on Safari pages on my first-gen iPad (iOS 5) worked as you'd expect, with the video duration and draggable time bar shown at the bottom, and the ability to send the video to my AppleTV via AirPlay.
Today I tried for the first time in a couple of weeks, and while the videos still play fine, the duration is shown as '--', the draggable time bar is disabled, and although the AirPlay icon still appears, I can now only send the audio to my AppleTV. This appears to be the case on any embedded videos I could find, such as those on my own homepage and this scrapbooking page (which my wife frequents!)
Have YouTube just changed something about the way they deliver embedded videos to iOS devices to cripple them in this way, or have I inadvertently changed something on my iPad that could have caused this?
(I have at least discovered a workaround, that I suspect might only work on iOS 5 older: tapping the title at the top of the video opens it in the original YouTube app. And from there, AirPlay works fine, as it does in the Google YouTube app.)