Incorrect aspect ratio when scraping DVD rips.

After ripping a DVD, I convert it to MKV using handbrake, Xmedia Recode, whatever. I have the program automatically crop out the black bars of course. This mainly happens with movies with a 2.35:1 AR but can also happen with movies of other aspect ratios. I will check the details of the file with Media Info first and everything is always correct. However, after I scape with Media Companion the AR will read as 1.957 in the nfo file it has created for a film that is 720x368. Another example is for a movie that is 712x344 it is coming up with the ratio as 2.070 when it SHOULD be 1.85:1. This only happens with DVDs that I rip and convert to MKV. They all play fine with the proper aspect ratio. Any ideas? Thanks.