How decrease size of VOBs keeping compatibility with original IFOs ?

andy

I've tried to quot;rempegquot; my vobs, but once their size decreased, my original IFO files are buging IFOedit and I can't Get Vectors anymore between my new VOB and old IFO...
So, I tried to demuxed my original streams on HDD to author a complete new DVD with IFOEdit BUT I lost original menu and structures!! And ReMpeg2 doesn't accept raw M2V file!!

So, how can I simply copy a DVD-9 content to one DVD-5, keeping the original structure, exatly the same menu, same extras BUT, just decreasing video stream quality?

Thanks a lot guys!!
Mattbag

PS : I'm actually using DVDDecrypter IFO and File modes, IFOedit and ReMpeg2 but perhaps you'll advice some better tools to me (excuse my english, I'm french)
Salut et merci d'avance!I think your issue is pretty much fully covered in the Guide called quot;DVD-9 to DVD-5 quot;Full Copyquot; Instructionsquot;.

Did you check it ? I used it with grat success, just reencoding the movie and keeping the other stuff quot;as isquot;.

Waldok