if you had an upscaling dvd player they generally would,as for hd divx no.i dont think the denon players will upscale divx either mine would only play the file in what ever it size it was.
the 1930 i had deffinatly wouldnt nor could i get it to do 1080p on my samsung tv(without the screen image unstable),sounds like in the 1940 they have addressed some issues.