Lightweight and effective, Free FLV Converter is a great way to convert video files from Flash formats into something more versatile. Specializing in formats meant for portable devices, Free FLV Converter also supports AVI and can download embedded SWF or FLV vids directly from the Internet when you punch in the URL.
The app can also perform local searches for vids as well as convert to FLV. Hitting either conversion tab will automatically open a file browser so you can choose your victim. From there, a conversion window opens, and you can change the basics such as settings, including output format, quality, and destination directory, as well as more advanced options like the codec, the aspect ratio, and the frame rate. Tap convert at the bottom of the window when you're ready, and the Free FLV Converter works smoothly and without interfering with other programs.
Free FLV Converter does have one annoyance: When you install it, be sure to opt out of the Dealio toolbar. It's no more than a minor drawback, though, and doesn't cause problems later on. Seeing as how the app ran smoothly in the background, it's definitely a must-use piece of freeware.