Agree Mobile 3GP MP4 MPEG4 Video Converter is a multi-format video converter. The application has good (not excellent) input video support, with the following formats being supported at the moment: AVI, WMV, MPEG, MP4, ASF, VOB, 3GP, M4V, MOV, SWF, and FLV. That covers pretty much all the standard definition formats that are used for video these days. This application can convert those formats into 3GP, MP4, and MPEG-4, which are great formats for mobile devices. It can also convert files to the MP3, AAC, AC3, AMR, M4A and OGG audio formats. It supports batch-mode processing, which means that you can add as many files as you want to the interface and they will be converted one after the other. You can also drag and drop files into the interface and they will be added.
Graphically, this converter looks very good. It has a simple and to-the-point user interface that contains all the necessary features for a file conversion on the main window. It is very practical.
In my testing, I converted a sample DivX AVI file into MPEG-4 with no problems at all. The process was quick and the resulting file played just fine on VLC.