I'm having a hell of a time understanding aspect ratios as they apply to AVI formatted video files for a video editing application.
(1) Are the "aspect ratios" reported by Windows Media Player (File>Properties) the pixel aspect ratio (PAR) or the display aspect ratio (DAR)?
(2) Are the "aspect ratios" reported by Windows Media Player a field in all AVI files, or only present in some AVI files, specific to the codec, etc.?
(3) How can I edit/set the aspect ratio in an AVI file, using a tool like VirtualDub?