File Size Problem

[frntrw]

Hopefully I'm in the right forum for this problem. I am copying from Panasonic DMR-HS2>DVD-RAM>Hard Drive. I get the usual folder with a .IFO, .BUP and .VRO file. The file size for the folder is 3.95 Gig. I then author in TMPGEnc DVD Author. It's showing the correct file size and the running time is 1hr 45min. After adding my menu's and chapters, I output it. That's where my problem starts. What normaly takes 13-15 minutes now takes 2, and I get a folder with a size of 1.64 Gig. It plays fine on the PC and on a regular DVD player, but stops after the first 55 minutes or so.
I've also tried it in Ulead's DVD Movie Factory and get the exact same result.

Now if my original file is there, and it plays correctly all the way thru, where did the rest of my program go after authoring?

[frntrw]

Forgot to mention also that this only happens once in awhile. Other clips work just fine with the software I'm using.