Nexus 7 Film aspect ratio

[mkcrook]

Guys,

I'm learning how to use my shiny new Nexus 7, but failing to copy films on in the correct aspect ratio. I'm using winex dvd to copy the dvd onto my computer and then simply dragging the file onto the Nexus. This software allows me to set the resolution so I can manually set it to 1280 * 800, but no matter what I try the film on the Nexus plays in a very narrow wide screen format.

What am I doing wrong?

Thanks