Fengtao,

Aha, optimization during the decrypting phase. Thanks for confirming what I suspected. As an experiment, I took all of the DVDFab decrypted files, replaced the VIDEO_TS.IFO and VIDEO_TS.BUP 8K optimized, with the 10K original versions from the DVD. Interesting that those files are not decrypted on the DVD, so I just copied them across. Then, I did the CloneDVD2 run and I got 8K VIDEO_TS.IFO/BUP size as output. Very good job!