Posted this in the other thread but I figured I put it here for the sake of completeness. This works using QT 5 and Navigator (and apparently IE as well).
In the QT control Panel under Browser Plug-in there's an option for saving the files in your cache whenever possible. If you enable this, then the file will show up there and all you have to do is grad it to teh desktop and rename it keeping the .mov suffix.
For whatever reason, using QT 5, you can search out the "invisible" temp file (by custom setting the Sherlock search criteria to "greater than" 10 or 20 Mgs and choosing "made today") but when you drag it to the desktop and append a .mov designation, QT will not recognize the file and it may crash it depending on the file.
catman