First of all, many thanks to Uncle Cheese for the wonderful DataObjectManager.
I want to upload video that will play on both a "normal" computer and an iPad. HTML5 won't work on older browsers and Flash won't work on iOS, so there's a bit of a problem.
I noticed from Uncle Cheese's screencast ( http://www.leftandmain.com/silverstripe-screencasts/2010/08/23/filedataobjectmanager-media-features/ ) that some files can be re-encoded into Flash format. Is it possible to upload something that is iOS friendly, have DOM re-encode it to Flash, but serve the original file to iOS devices and the new Flash version to computer browsers?