Importing VOB from DVD results in squeezed image When I import VTS_01_1.VOB into VirtualDub or Avidemux or try to play it with Media Player Classic, it plays in dimensions 352x576 (squeezed) which should clearly be 576x352. But when I play the file in VLC, it plays in the correct dimensions and it looks like it should, so I know the frames are in 576x352, it's just that they're being misinterpreted by VirtualDub and Avidemux. Furthermore when I try to convert it with VLC, the result is 352x576 even though VLC plays it correctly in 576x352.

How do I fix this? I just want to import the file into VirtualDub or Avidemux so I can edit it.
Sounds like thoses apps aren't respecting the Pixel Aspect Ratio (PAR) flag.  Widescreen DVD movies aren't usually made of more pixels, they have a setting in the metadata telling the player to stretch the pixels from squares into rectangles to make the picture look right.

VLC is reading the PAR flag and playing the pixels back in their correct aspect ratio.

A possible solution that has worked for me in some situations is to use HandBrake to convert from stretched pixels with a PAR flag to more pixels that are square.  You can do this in Handbrake by previewing the movie in Anamorphic PAR mode, noting the image dimensions listed, then turning off Anamorphic and the PAR, and typing the dimensions in by hand.  The resulting render will have square pixels (PAR 1.0) but the image will be properly stretched.

Hope that helps.