So: we all know that Youtube is a valuable resource for video materials but not everyone is aware that it is blocked in many schools. even in situations were it is not blocked the links and pop ups may not be suitable for school and when download speeds are poor the quality may be reduced.
One tool that may be useful is KeepVid which allows users to download video (and Audio) from an array of different sources including YouTube.
The trick is to avoid clicking on the big green DOWNLOAD NOW boxes and to follow the links.
FLV files are good with SmartNotes
MP4 files are good with Windows Media Player
MP3 files are Audio only
As an aside a great video player for all file types is VLC