How to download and play YouTube videos, Update

Additional and more recent tools on How to download and play YouTube videos:

If you use martijndevisser's flv player, make sure you have the latest version. I have found some videos fail to load under the older version of the software.

To integrate with Firefox, you can use the add-on Download Helper instead of VideoDownloader . Download Helper animates when it sees something that can be downloaded. Its download however, does not work together with download managers, it uses Firefox for the download.

Easy Video Download is another software for video downloading. It has the option to save in AVI or MPEG4 format, besides saving in flash video format.