K-Lite Video Conversion Pack will allow you to convert video files into various formats. It even allows creation of your own DVDs with custom menus.
Avidemux is a very powerful tool for editing video files. It supports almost every type of video file as input. It can do lots of things:, cut, remux, convert, etc. It contains its own decoders and encoders for all common audio and video formats, so it does not need any codecs.
ImgBurn is a tool for burning DVD image files (ISO, IMG, etc).
Usage example:
Converting an AVI file to DVD
1) Use Avidemux to convert your file into a DVD compatible format:
MPEG-2 video, AC3 audio, MPEG-PS container format
2) Drag&drop the converted file(s) into DVDStyler and create a custom menu. For example just a simple button to start the movie. Select the "Burn DVD…" option in the menu to generate an ISO file.
3) Burn the resulting ISO file with ImgBurn.
Download : K-Lite Video Conversion Pack v1.0.0

9Down