

Although the FLV format, which is found on YouTube and other Flash-based video sites, is probably the most common format that users will encounter, the extension can also handle MOV, AVI, WMV, and a few other file types. We downloaded several videos in different formats and didn't encounter problems with any of them. The extension then opens a new Web page that shows a progress bar depicting how much of the file has been downloaded. Downloading a video is as easy as clicking the button, selecting the destination location, and clicking OK. The icon is grayed out when Sothink Web Video Downloader doesn't detect a downloadable video, but it becomes colored and animated when it does.

The add-on installs easily and appears as an icon to the left of Firefox's address bar. Sothink Web Video Downloader for Firefox is a browser extension that makes it easy to download a wide variety of different types of videos so that you can view them no matter where you are.

There's a ton of great content on YouTube and other video Web sites, but if you're not connected to the Internet, it's inaccessible.
