Bros video Converter is a good converter.

Bros video Converter  provides an easy way for users to convert among video and audio

formats, such as MPEG to MP4, FLV to MP4, MP3 to WAV, etc., video preview and snapshot capture function are also supported.

Oh, I’m sure it is just wonderful, which is why you have to SPAM sites like this one.

There is a free version of Any Video Converter.

Media Coder is also free–but use your firewall/internet security to keep it from calling home a lot.