This question was put to us recently by an educator who wants to show certain Youtube videos in her classes but cannot rely on a working internet connection. These simple instructions are courtesy of Digital Inspiration by Amit Agarwal.

Try vixy.net – it will allow you to download Youtube videos directly as a standard video file or even audio-only. It is somewhat limited in the formats though. We’d prefer an Xvid option. Xvid is an open-source alternative to DivX. 

For a free program you can install on a computer and run…try Super…

Finally, if you want to put them on a DVD, Amit offers a bit more advice(Although we generally go the Linux route) and instruction.