iSquint is a popular video conversion software for Mac.

It offers users ways of converting their videos to various formats and completing tasks such as auto cropping and fitting 18 hours of video onto one DVD, (although I am yet to figure how someone would use that) in addition to converting wrong format videos for iPod video. It works with most video formats and is simple as “drop, drag and click” to convert a video file. iSquint has an available freeware version and also a registered version called “VisualHub” which costs $23.32.