Video and iOS device fragmentation
In QuickTime X Player, there is a function called "Export for Web" that creates a package of files which include a reference movie that detects whether the request for a video comes from a regular computer, a WiFi iPhone or iPod touch or an iPhone on cellular. I would suppose that this will be expanded to include iPad when Lion ships. The point here is that Apple has a very effective mechanism for reducing this complexity to clicking on a poster image to invoke the selection of the appropriate version of a video.
However, I see no support for this in iTunes U. Expanding the Audio/SD/HD selector won't scale well in my opinion because most end users will not understand that their second generation iPod touch won't play video optimized for iPhone 4.
How do others deal with this? What's the prevalent thinking on how to handle this now and into the future where it will only become more complex?
Dual Quad 3.0 GHz PowerMac, Mac OS X (10.6.2), 1G iPad 2G iPod touch