None of the Hulu capture programs I've tried works at all. They all say the capture FLV file or can somehow get the true URL from Hulu. Not in my experience. Yes, if the URL ends in FLV as it does on most sites.
However all Hulu video URL's end in "PSA". and so far no program even the one that was called Hulu downloader was able to record it!
Real Player and
Replay Media Catcher both only download the HTML target, not the FLV file. I end up with nothing downloaded except the link to the page it was on. Useless!