There are lots of methods to download video clips from YouTube. Replay Media Catcher can download YouTube videos for FREE renaming downloaded YouTube videos automatically.

And you can use free web-sites like youtubecatcher.com that provide direct download links for YouTube videos. However these web-sites require you to rename files and even give an .flv extension to the downloaded youtube video.

FAQ: How to record/download/capture/save Flash .FLV video stream from YouTube