AVI or Audio Video Interleaved is a media format from Microsoft which is widely used for video playback all over the Windows world. For windows, AVI was the first A/V format. As used for multiple encoding methods, it is known to be ‘container format’. DPG is a MPEG-1 coded video format that is designed especially for Nintendo DS which is a popular portable game console all around the world. You may have several AVI files in your computer and you need to watch AVI movies on Nintendo DS but you must know that DPG format is the format which is accepted by DS. Thus, in order to watch these AVI files you need to convert your avi files to dpg format first.