iPad 3G video downscaled, blocked over AT&T network

In our early testing, iLounge has learned that some video delivery applications act differently over the 3G network than they do on Wi-Fi. The iPad’s built-in YouTube application strips both standard and HD videos to a dramatically lower resolution over the cellular data connection, something that iTunes Store video previews notably do not do, instead staying at a higher quality and consuming a greater amount of data. Other third-party applications, such as the ABC Player, refuse to work at all over the cellular connection, producing a notification pop-up that states, “Please connect to a Wi-Fi network to use this application. Cellular networks are not supported at this time.”