[ByteMercenary]

If you have trouble downloading a YT video, the quickest way to acquire a YouTube video is to watch it, exit the internet. Now search your computer for a file with the ‘.flv’ extension that is dated today. Copy it to a known folder, change the name (but keep the .flv extension) and -voila-, you have your own copy.

[Kirkwood]

There are much easier ways that allow you to save it to a filename and directory you specify as it downloads. No need to log off and go hunting your hard drive for it. Like I said, there are various applications available that do this automatically. Much, much quicker than a HD search.