DVD ISO rips are playing back "windowboxed"

[buick301]

I'm using AnyDVD to rip discs as ISOs that I play back on my WD TV Live box. I have a small handful of ISOs that play back "windowboxed" (I think I'm using the correct terminology - there are bars all around the video - top, bottom, left and right.) I'm seeing this issue with the following DVDs:

1941
The Rock
A Mid Summer's Night Dream
Iron Monkey
Office Space
Snake Eyes
Young Frankenstein

I have attached a log file from the analysis of the Office Space disc.

Any idea if there is a work around for this? Thanks!