youtube-dl

youtube-dl can download from media sites. Install from software centre

Terminal

To update;
youtube-dl -U

Use;
youtube-dl "http://www.**************.com/watch?v=foobar"

* Copy the website address and change foobar to name you want to call file. File will be saved a "flv" Flash Video format file.

use -f switch to check formats available to download.

youtube-dl "http://www.**************.com/watch?v=foobar" - f

shows formats

example (also downloading subtitles as mp4 to current folder with original name)

youtube-dl "http://www.**************.com/watch?v=BlAhBlahBlah" -f 18 --embed-subs

For help;

 youtube-dl --help


GYD is a frontend for youtube-dl