I put all of my DIVX movies on my SD Card and they don't work.

I used these same files burned to a DVD on my Avic D3, so I know they are the correct format.

I have done a search and haven't really found a straight answer so...

Can you play videos/ Movies off of a SD Card?

Sure can, boss. .AVI Xvid format works best.

Yeah, in the back of the manual there's a table with supported formats/resolutions/bitrates.

Also, make the pictures in your signature smaller.