not quite the answer, but check the tags on some page with QT's...the best ones are from apple, they check well all the code...but again if you use mac, you can workaround that (opening the temp file generated directly with the quicktime player, not the plug-in, the app), but i found a video (on bjork site) that does not let you save in any way, its a combination of flash/qt...
...they are using qt streaming, in this way, you don't have temp file, at least nothing to save.