Use TMPGenc to re-code the mpeg file. File > Mpeg Tools > Merge&Cut. Go to the Type drop down box and select MPEG-1 System Automatic. Click on add, browse to the desired file, hit open. You will now see that file listed in the box. Select browse and find location where you want to save the new file to. Hit run and it will re-encode it for you.
There are also other various ways to encode this file but it all depends on what you want to do with them.
I suggest you check out
www.dvdrhelp.com and visit their forums for more help.
Also check out
www.digital-digest.com and check out their forums also.

Just select it to MPEG-1 System Automatic

File loaded, just click on browse and save to location, then hit run.