MPEG Video Wizard DVD works with a number of file types, some of which are internal to the editor, and some of which are files that the editor supports.

• .wbp --- editor project file internal to MVW.
  
• .wbt --- text or graphic title file internal to MVW.
  
• .wpl --- list of editor projects used by Project Manager.
  
• .wbl --- list of video/audio/title clips used by Project Manager.
  
• .wml --- list of user selected video effects used by Project Manager.
  
• .mls --- list of video bookmarks used by Input Monitor.
  
• .wpk --- a special file that packs a complete editor project to make it portable across different computers, which is especially helpful for debugging and testing, used by the Editor Project Package tool.
  
• .mbs --- a list of segment files each of which saves a starting file offset and an ending file offset.
  

File types that are internal for DVD Maker:

• .wbd --- DVD editor project file.
• .wlt --- list of DVD editor projects.
• .mlt --- list of user-defined menu templates.