Summary. There are a variety of software programs available for Windows that allow you to download videos from YouTube. Some are free, others are paid. There are also software programs for Apple Mac users to download YouTube videos.
YouTube videos are typically downloaded as flv files (Adobe Flash Video). So, most of the programs mentioned above can convert the downloaded video to a more usable and compatible format.
The ability to download and save videos is helpful for educators and presenters who have created an educational presentation that incorporates a video clip. If a video is no longer available online, having a downloaded version is essential.