Ultimate Video Converter is an amazing piece of software which will eventually allow you to convert to any video format to any other. Currently it is in development and has many codecs but more will be coming soon.
A easy to use open source video converter written in Visual Basic.NET. It provides a GUI to FFmpeg so is very reliable and stable. It has lots of presets for basic users but also has a lot of customization options for advanced users.
Get Ultimate Video Converter 2.7.0.0 [>>]